./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/weaver/array-eq-trans.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 0e0057cc 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_13a81e6b-a681-4a1e-94d6-de0a897cf9bb/bin/uautomizer-verify-VRDe98Ueme/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13a81e6b-a681-4a1e-94d6-de0a897cf9bb/bin/uautomizer-verify-VRDe98Ueme/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13a81e6b-a681-4a1e-94d6-de0a897cf9bb/bin/uautomizer-verify-VRDe98Ueme/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13a81e6b-a681-4a1e-94d6-de0a897cf9bb/bin/uautomizer-verify-VRDe98Ueme/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/weaver/array-eq-trans.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13a81e6b-a681-4a1e-94d6-de0a897cf9bb/bin/uautomizer-verify-VRDe98Ueme/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13a81e6b-a681-4a1e-94d6-de0a897cf9bb/bin/uautomizer-verify-VRDe98Ueme --witnessprinter.witness.filename witness --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 e7f1528a4c77969c5bff279724a3ed43475460be047e2e4b141f1353c3ea9cfe --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-26 12:01:54,909 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-26 12:01:54,996 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13a81e6b-a681-4a1e-94d6-de0a897cf9bb/bin/uautomizer-verify-VRDe98Ueme/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2023-11-26 12:01:55,003 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-26 12:01:55,004 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-26 12:01:55,049 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-26 12:01:55,051 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-26 12:01:55,052 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-26 12:01:55,053 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-26 12:01:55,058 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-26 12:01:55,059 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-26 12:01:55,059 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-26 12:01:55,060 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-26 12:01:55,062 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-26 12:01:55,062 INFO L153 SettingsManager]: * Use SBE=true [2023-11-26 12:01:55,063 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-26 12:01:55,063 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-26 12:01:55,064 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-26 12:01:55,064 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-26 12:01:55,065 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-26 12:01:55,065 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-26 12:01:55,066 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-26 12:01:55,066 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-26 12:01:55,066 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-26 12:01:55,067 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-26 12:01:55,067 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-26 12:01:55,068 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-26 12:01:55,068 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-26 12:01:55,069 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-26 12:01:55,069 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-26 12:01:55,070 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-26 12:01:55,070 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-26 12:01:55,071 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-26 12:01:55,071 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-26 12:01:55,071 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-26 12:01:55,072 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-26 12:01:55,072 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-26 12:01:55,072 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-26 12:01:55,073 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-26 12:01:55,073 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-26 12:01:55,073 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-26 12:01:55,074 INFO L153 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_13a81e6b-a681-4a1e-94d6-de0a897cf9bb/bin/uautomizer-verify-VRDe98Ueme/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13a81e6b-a681-4a1e-94d6-de0a897cf9bb/bin/uautomizer-verify-VRDe98Ueme Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e7f1528a4c77969c5bff279724a3ed43475460be047e2e4b141f1353c3ea9cfe [2023-11-26 12:01:55,426 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-26 12:01:55,464 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-26 12:01:55,468 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-26 12:01:55,471 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-26 12:01:55,471 INFO L274 PluginConnector]: CDTParser initialized [2023-11-26 12:01:55,473 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13a81e6b-a681-4a1e-94d6-de0a897cf9bb/bin/uautomizer-verify-VRDe98Ueme/../../sv-benchmarks/c/weaver/array-eq-trans.wvr.c [2023-11-26 12:01:58,744 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-26 12:01:59,067 INFO L384 CDTParser]: Found 1 translation units. [2023-11-26 12:01:59,068 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13a81e6b-a681-4a1e-94d6-de0a897cf9bb/sv-benchmarks/c/weaver/array-eq-trans.wvr.c [2023-11-26 12:01:59,078 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13a81e6b-a681-4a1e-94d6-de0a897cf9bb/bin/uautomizer-verify-VRDe98Ueme/data/5acbd92da/3526d4484edf43698ce9719e2ca81611/FLAG12bf73d52 [2023-11-26 12:01:59,097 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13a81e6b-a681-4a1e-94d6-de0a897cf9bb/bin/uautomizer-verify-VRDe98Ueme/data/5acbd92da/3526d4484edf43698ce9719e2ca81611 [2023-11-26 12:01:59,103 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-26 12:01:59,105 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-26 12:01:59,109 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-26 12:01:59,109 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-26 12:01:59,114 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-26 12:01:59,115 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 12:01:59" (1/1) ... [2023-11-26 12:01:59,116 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5450dcf6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:01:59, skipping insertion in model container [2023-11-26 12:01:59,116 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 12:01:59" (1/1) ... [2023-11-26 12:01:59,150 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-26 12:01:59,442 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-26 12:01:59,458 ERROR L324 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) [2023-11-26 12:01:59,459 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@5081ad6c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:01:59, skipping insertion in model container [2023-11-26 12:01:59,460 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-26 12:01:59,460 INFO L186 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2023-11-26 12:01:59,462 INFO L158 Benchmark]: Toolchain (without parser) took 355.71ms. Allocated memory is still 140.5MB. Free memory was 107.4MB in the beginning and 97.2MB in the end (delta: 10.1MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-11-26 12:01:59,463 INFO L158 Benchmark]: CDTParser took 0.35ms. Allocated memory is still 140.5MB. Free memory is still 112.8MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-26 12:01:59,464 INFO L158 Benchmark]: CACSL2BoogieTranslator took 351.18ms. Allocated memory is still 140.5MB. Free memory was 107.0MB in the beginning and 97.2MB in the end (delta: 9.8MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-11-26 12:01:59,466 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.35ms. Allocated memory is still 140.5MB. Free memory is still 112.8MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 351.18ms. Allocated memory is still 140.5MB. Free memory was 107.0MB in the beginning and 97.2MB in the end (delta: 9.8MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 111]: 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_13a81e6b-a681-4a1e-94d6-de0a897cf9bb/bin/uautomizer-verify-VRDe98Ueme/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13a81e6b-a681-4a1e-94d6-de0a897cf9bb/bin/uautomizer-verify-VRDe98Ueme/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13a81e6b-a681-4a1e-94d6-de0a897cf9bb/bin/uautomizer-verify-VRDe98Ueme/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13a81e6b-a681-4a1e-94d6-de0a897cf9bb/bin/uautomizer-verify-VRDe98Ueme/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/weaver/array-eq-trans.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13a81e6b-a681-4a1e-94d6-de0a897cf9bb/bin/uautomizer-verify-VRDe98Ueme/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13a81e6b-a681-4a1e-94d6-de0a897cf9bb/bin/uautomizer-verify-VRDe98Ueme --witnessprinter.witness.filename witness --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 e7f1528a4c77969c5bff279724a3ed43475460be047e2e4b141f1353c3ea9cfe --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-26 12:02:02,053 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-26 12:02:02,188 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13a81e6b-a681-4a1e-94d6-de0a897cf9bb/bin/uautomizer-verify-VRDe98Ueme/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2023-11-26 12:02:02,196 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-26 12:02:02,197 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-26 12:02:02,242 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-26 12:02:02,242 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-26 12:02:02,243 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-26 12:02:02,244 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-26 12:02:02,249 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-26 12:02:02,249 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-26 12:02:02,250 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-26 12:02:02,250 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-26 12:02:02,252 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-26 12:02:02,252 INFO L153 SettingsManager]: * Use SBE=true [2023-11-26 12:02:02,253 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-26 12:02:02,253 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-26 12:02:02,254 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-26 12:02:02,254 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-26 12:02:02,255 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-26 12:02:02,255 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-26 12:02:02,256 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-26 12:02:02,256 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-26 12:02:02,257 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-26 12:02:02,257 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-26 12:02:02,257 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-11-26 12:02:02,258 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-11-26 12:02:02,258 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-26 12:02:02,259 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-26 12:02:02,259 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-26 12:02:02,261 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-26 12:02:02,261 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-26 12:02:02,261 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-26 12:02:02,261 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-26 12:02:02,262 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-26 12:02:02,262 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-26 12:02:02,263 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-26 12:02:02,263 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-11-26 12:02:02,263 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-11-26 12:02:02,264 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-26 12:02:02,264 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-26 12:02:02,264 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-26 12:02:02,264 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-26 12:02:02,264 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-11-26 12:02:02,265 INFO L153 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_13a81e6b-a681-4a1e-94d6-de0a897cf9bb/bin/uautomizer-verify-VRDe98Ueme/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13a81e6b-a681-4a1e-94d6-de0a897cf9bb/bin/uautomizer-verify-VRDe98Ueme Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e7f1528a4c77969c5bff279724a3ed43475460be047e2e4b141f1353c3ea9cfe [2023-11-26 12:02:02,657 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-26 12:02:02,687 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-26 12:02:02,690 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-26 12:02:02,692 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-26 12:02:02,692 INFO L274 PluginConnector]: CDTParser initialized [2023-11-26 12:02:02,694 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13a81e6b-a681-4a1e-94d6-de0a897cf9bb/bin/uautomizer-verify-VRDe98Ueme/../../sv-benchmarks/c/weaver/array-eq-trans.wvr.c [2023-11-26 12:02:05,929 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-26 12:02:06,240 INFO L384 CDTParser]: Found 1 translation units. [2023-11-26 12:02:06,241 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13a81e6b-a681-4a1e-94d6-de0a897cf9bb/sv-benchmarks/c/weaver/array-eq-trans.wvr.c [2023-11-26 12:02:06,251 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13a81e6b-a681-4a1e-94d6-de0a897cf9bb/bin/uautomizer-verify-VRDe98Ueme/data/cabccfc7b/ebf6dc569ab24dccb9cba957e20d6349/FLAGde30d31dc [2023-11-26 12:02:06,272 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13a81e6b-a681-4a1e-94d6-de0a897cf9bb/bin/uautomizer-verify-VRDe98Ueme/data/cabccfc7b/ebf6dc569ab24dccb9cba957e20d6349 [2023-11-26 12:02:06,277 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-26 12:02:06,285 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-26 12:02:06,288 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-26 12:02:06,289 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-26 12:02:06,294 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-26 12:02:06,295 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 12:02:06" (1/1) ... [2023-11-26 12:02:06,296 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@38aff4e8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:02:06, skipping insertion in model container [2023-11-26 12:02:06,296 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 12:02:06" (1/1) ... [2023-11-26 12:02:06,325 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-26 12:02:06,609 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-26 12:02:06,634 INFO L199 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2023-11-26 12:02:06,647 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-26 12:02:06,692 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-26 12:02:06,702 INFO L202 MainTranslator]: Completed pre-run [2023-11-26 12:02:06,745 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-26 12:02:06,775 INFO L206 MainTranslator]: Completed translation [2023-11-26 12:02:06,775 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:02:06 WrapperNode [2023-11-26 12:02:06,775 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-26 12:02:06,777 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-26 12:02:06,777 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-26 12:02:06,777 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-26 12:02:06,785 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:02:06" (1/1) ... [2023-11-26 12:02:06,812 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:02:06" (1/1) ... [2023-11-26 12:02:06,850 INFO L138 Inliner]: procedures = 26, calls = 47, calls flagged for inlining = 11, calls inlined = 15, statements flattened = 208 [2023-11-26 12:02:06,853 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-26 12:02:06,854 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-26 12:02:06,854 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-26 12:02:06,855 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-26 12:02:06,867 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:02:06" (1/1) ... [2023-11-26 12:02:06,868 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:02:06" (1/1) ... [2023-11-26 12:02:06,888 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:02:06" (1/1) ... [2023-11-26 12:02:06,925 INFO L175 MemorySlicer]: Split 23 memory accesses to 5 slices as follows [2, 15, 2, 2, 2]. 65 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0, 0, 0]. The 6 writes are split as follows [0, 3, 1, 1, 1]. [2023-11-26 12:02:06,926 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:02:06" (1/1) ... [2023-11-26 12:02:06,926 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:02:06" (1/1) ... [2023-11-26 12:02:06,940 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:02:06" (1/1) ... [2023-11-26 12:02:06,946 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:02:06" (1/1) ... [2023-11-26 12:02:06,949 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:02:06" (1/1) ... [2023-11-26 12:02:06,964 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:02:06" (1/1) ... [2023-11-26 12:02:06,969 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-26 12:02:06,970 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-26 12:02:06,971 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-26 12:02:06,971 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-26 12:02:06,972 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:02:06" (1/1) ... [2023-11-26 12:02:06,978 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-26 12:02:07,000 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13a81e6b-a681-4a1e-94d6-de0a897cf9bb/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 12:02:07,013 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13a81e6b-a681-4a1e-94d6-de0a897cf9bb/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-26 12:02:07,037 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13a81e6b-a681-4a1e-94d6-de0a897cf9bb/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-26 12:02:07,068 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-26 12:02:07,068 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2023-11-26 12:02:07,069 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#1 [2023-11-26 12:02:07,069 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#2 [2023-11-26 12:02:07,069 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#3 [2023-11-26 12:02:07,069 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#4 [2023-11-26 12:02:07,069 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-26 12:02:07,070 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#0 [2023-11-26 12:02:07,070 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#1 [2023-11-26 12:02:07,070 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#2 [2023-11-26 12:02:07,070 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#3 [2023-11-26 12:02:07,070 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#4 [2023-11-26 12:02:07,070 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-11-26 12:02:07,071 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-11-26 12:02:07,071 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-11-26 12:02:07,071 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-11-26 12:02:07,071 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-11-26 12:02:07,071 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-11-26 12:02:07,071 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-26 12:02:07,072 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-26 12:02:07,072 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-26 12:02:07,072 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-26 12:02:07,072 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#0 [2023-11-26 12:02:07,072 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#1 [2023-11-26 12:02:07,073 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#2 [2023-11-26 12:02:07,073 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#3 [2023-11-26 12:02:07,073 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#4 [2023-11-26 12:02:07,075 WARN L213 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-26 12:02:07,225 INFO L241 CfgBuilder]: Building ICFG [2023-11-26 12:02:07,232 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-26 12:02:08,304 INFO L282 CfgBuilder]: Performing block encoding [2023-11-26 12:02:08,642 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-26 12:02:08,642 INFO L309 CfgBuilder]: Removed 6 assume(true) statements. [2023-11-26 12:02:08,643 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 12:02:08 BoogieIcfgContainer [2023-11-26 12:02:08,643 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-26 12:02:08,645 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-26 12:02:08,645 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-26 12:02:08,649 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-26 12:02:08,649 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.11 12:02:06" (1/3) ... [2023-11-26 12:02:08,650 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6ec01efe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 12:02:08, skipping insertion in model container [2023-11-26 12:02:08,650 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:02:06" (2/3) ... [2023-11-26 12:02:08,650 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6ec01efe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 12:02:08, skipping insertion in model container [2023-11-26 12:02:08,650 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 12:02:08" (3/3) ... [2023-11-26 12:02:08,652 INFO L112 eAbstractionObserver]: Analyzing ICFG array-eq-trans.wvr.c [2023-11-26 12:02:08,671 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-26 12:02:08,672 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 44 error locations. [2023-11-26 12:02:08,672 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-26 12:02:08,750 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-11-26 12:02:08,786 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 120 places, 125 transitions, 271 flow [2023-11-26 12:02:08,835 INFO L124 PetriNetUnfolderBase]: 15/122 cut-off events. [2023-11-26 12:02:08,835 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-11-26 12:02:08,840 INFO L83 FinitePrefix]: Finished finitePrefix Result has 135 conditions, 122 events. 15/122 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 351 event pairs, 0 based on Foata normal form. 0/63 useless extension candidates. Maximal degree in co-relation 77. Up to 2 conditions per place. [2023-11-26 12:02:08,840 INFO L82 GeneralOperation]: Start removeDead. Operand has 120 places, 125 transitions, 271 flow [2023-11-26 12:02:08,846 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 116 places, 121 transitions, 260 flow [2023-11-26 12:02:08,856 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-26 12:02:08,863 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;@47dabb, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-26 12:02:08,863 INFO L358 AbstractCegarLoop]: Starting to check reachability of 59 error locations. [2023-11-26 12:02:08,867 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-26 12:02:08,867 INFO L124 PetriNetUnfolderBase]: 1/4 cut-off events. [2023-11-26 12:02:08,868 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-26 12:02:08,868 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 12:02:08,869 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-11-26 12:02:08,869 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 56 more)] === [2023-11-26 12:02:08,874 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:02:08,874 INFO L85 PathProgramCache]: Analyzing trace with hash 770987, now seen corresponding path program 1 times [2023-11-26 12:02:08,891 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-26 12:02:08,891 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1849234460] [2023-11-26 12:02:08,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:02:08,892 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 [2023-11-26 12:02:08,892 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13a81e6b-a681-4a1e-94d6-de0a897cf9bb/bin/uautomizer-verify-VRDe98Ueme/mathsat [2023-11-26 12:02:08,896 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13a81e6b-a681-4a1e-94d6-de0a897cf9bb/bin/uautomizer-verify-VRDe98Ueme/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) [2023-11-26 12:02:08,923 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13a81e6b-a681-4a1e-94d6-de0a897cf9bb/bin/uautomizer-verify-VRDe98Ueme/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 [2023-11-26 12:02:09,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:02:09,045 INFO L262 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-26 12:02:09,051 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 12:02:09,135 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2023-11-26 12:02:09,159 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 12:02:09,160 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-26 12:02:09,179 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 12:02:09,181 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-26 12:02:09,203 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 12:02:09,205 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 1 [2023-11-26 12:02:09,222 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 12:02:09,223 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-26 12:02:09,235 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 12:02:09,236 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 1 [2023-11-26 12:02:09,251 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 12:02:09,253 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 1 [2023-11-26 12:02:09,262 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 12:02:09,263 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-26 12:02:09,288 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 12:02:09,289 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-26 12:02:09,307 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 12:02:09,308 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 1 [2023-11-26 12:02:09,320 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 12:02:09,321 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-26 12:02:09,329 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 12:02:09,329 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 1 [2023-11-26 12:02:09,367 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 12:02:09,368 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 1 [2023-11-26 12:02:09,406 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 12:02:09,407 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 7 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 1 [2023-11-26 12:02:09,437 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 12:02:09,438 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 1 [2023-11-26 12:02:09,448 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 12:02:09,449 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-26 12:02:09,466 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 12:02:09,467 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-26 12:02:09,483 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 12:02:09,484 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 1 [2023-11-26 12:02:09,496 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 12:02:09,498 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 1 [2023-11-26 12:02:09,506 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 12:02:09,506 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-26 12:02:09,513 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 12:02:09,514 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 1 [2023-11-26 12:02:09,521 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 12:02:09,522 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-26 12:02:09,532 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 12:02:09,533 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-26 12:02:09,552 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 12:02:09,557 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 1 [2023-11-26 12:02:09,566 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 12:02:09,566 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 12:02:09,567 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-26 12:02:09,567 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1849234460] [2023-11-26 12:02:09,568 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1849234460] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 12:02:09,568 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 12:02:09,568 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-26 12:02:09,570 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2091808367] [2023-11-26 12:02:09,571 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 12:02:09,578 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 12:02:09,583 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-26 12:02:09,608 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 12:02:09,608 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 12:02:09,805 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 79 out of 125 [2023-11-26 12:02:09,808 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 116 places, 121 transitions, 260 flow. Second operand has 3 states, 3 states have (on average 80.0) internal successors, (240), 3 states have internal predecessors, (240), 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) [2023-11-26 12:02:09,808 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 12:02:09,808 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 79 of 125 [2023-11-26 12:02:09,809 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 12:02:10,286 INFO L124 PetriNetUnfolderBase]: 703/1397 cut-off events. [2023-11-26 12:02:10,286 INFO L125 PetriNetUnfolderBase]: For 84/85 co-relation queries the response was YES. [2023-11-26 12:02:10,296 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2352 conditions, 1397 events. 703/1397 cut-off events. For 84/85 co-relation queries the response was YES. Maximal size of possible extension queue 97. Compared 7971 event pairs, 266 based on Foata normal form. 1/831 useless extension candidates. Maximal degree in co-relation 2020. Up to 879 conditions per place. [2023-11-26 12:02:10,317 INFO L140 encePairwiseOnDemand]: 119/125 looper letters, 39 selfloop transitions, 2 changer transitions 0/116 dead transitions. [2023-11-26 12:02:10,318 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 113 places, 116 transitions, 332 flow [2023-11-26 12:02:10,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 12:02:10,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-26 12:02:10,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 282 transitions. [2023-11-26 12:02:10,347 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.752 [2023-11-26 12:02:10,348 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 282 transitions. [2023-11-26 12:02:10,348 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 282 transitions. [2023-11-26 12:02:10,353 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 12:02:10,355 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 282 transitions. [2023-11-26 12:02:10,361 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 94.0) internal successors, (282), 3 states have internal predecessors, (282), 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) [2023-11-26 12:02:10,372 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 125.0) internal successors, (500), 4 states have internal predecessors, (500), 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) [2023-11-26 12:02:10,373 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 125.0) internal successors, (500), 4 states have internal predecessors, (500), 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) [2023-11-26 12:02:10,376 INFO L175 Difference]: Start difference. First operand has 116 places, 121 transitions, 260 flow. Second operand 3 states and 282 transitions. [2023-11-26 12:02:10,377 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 113 places, 116 transitions, 332 flow [2023-11-26 12:02:10,386 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 116 transitions, 320 flow, removed 0 selfloop flow, removed 6 redundant places. [2023-11-26 12:02:10,390 INFO L231 Difference]: Finished difference. Result has 107 places, 116 transitions, 242 flow [2023-11-26 12:02:10,392 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=125, PETRI_DIFFERENCE_MINUEND_FLOW=238, PETRI_DIFFERENCE_MINUEND_PLACES=105, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=116, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=114, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=242, PETRI_PLACES=107, PETRI_TRANSITIONS=116} [2023-11-26 12:02:10,398 INFO L281 CegarLoopForPetriNet]: 116 programPoint places, -9 predicate places. [2023-11-26 12:02:10,398 INFO L495 AbstractCegarLoop]: Abstraction has has 107 places, 116 transitions, 242 flow [2023-11-26 12:02:10,398 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 80.0) internal successors, (240), 3 states have internal predecessors, (240), 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) [2023-11-26 12:02:10,399 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 12:02:10,399 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-11-26 12:02:10,406 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13a81e6b-a681-4a1e-94d6-de0a897cf9bb/bin/uautomizer-verify-VRDe98Ueme/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Ended with exit code 0 [2023-11-26 12:02:10,601 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13a81e6b-a681-4a1e-94d6-de0a897cf9bb/bin/uautomizer-verify-VRDe98Ueme/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 [2023-11-26 12:02:10,601 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 56 more)] === [2023-11-26 12:02:10,602 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:02:10,602 INFO L85 PathProgramCache]: Analyzing trace with hash 770988, now seen corresponding path program 1 times [2023-11-26 12:02:10,603 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-26 12:02:10,603 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1690295528] [2023-11-26 12:02:10,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:02:10,604 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 [2023-11-26 12:02:10,604 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13a81e6b-a681-4a1e-94d6-de0a897cf9bb/bin/uautomizer-verify-VRDe98Ueme/mathsat [2023-11-26 12:02:10,605 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13a81e6b-a681-4a1e-94d6-de0a897cf9bb/bin/uautomizer-verify-VRDe98Ueme/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) [2023-11-26 12:02:10,630 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13a81e6b-a681-4a1e-94d6-de0a897cf9bb/bin/uautomizer-verify-VRDe98Ueme/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 [2023-11-26 12:02:10,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:02:10,714 INFO L262 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-26 12:02:10,715 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 12:02:10,757 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 7 [2023-11-26 12:02:10,775 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 12:02:10,776 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-26 12:02:10,812 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 12:02:10,813 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1 [2023-11-26 12:02:10,850 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 12:02:10,851 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 7 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2023-11-26 12:02:10,879 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 12:02:10,880 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1 [2023-11-26 12:02:10,892 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 12:02:10,893 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-26 12:02:10,907 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 12:02:10,907 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-26 12:02:10,918 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 12:02:10,919 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-26 12:02:10,946 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 12:02:10,947 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1 [2023-11-26 12:02:10,962 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 12:02:10,963 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-26 12:02:10,977 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 12:02:10,977 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-26 12:02:10,990 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 12:02:10,991 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-26 12:02:11,008 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 12:02:11,012 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-26 12:02:11,020 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 12:02:11,021 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-26 12:02:11,030 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 12:02:11,031 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-26 12:02:11,045 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 12:02:11,045 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-26 12:02:11,072 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 12:02:11,074 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1 [2023-11-26 12:02:11,085 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 12:02:11,086 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-26 12:02:11,111 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 12:02:11,116 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-26 12:02:11,124 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 12:02:11,125 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-26 12:02:11,137 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 12:02:11,142 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-26 12:02:11,153 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 12:02:11,154 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-26 12:02:11,169 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 12:02:11,169 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-26 12:02:11,191 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 12:02:11,194 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1 [2023-11-26 12:02:11,302 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 12:02:11,302 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 12:02:11,303 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-26 12:02:11,303 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1690295528] [2023-11-26 12:02:11,303 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1690295528] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 12:02:11,303 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 12:02:11,304 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-26 12:02:11,304 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [420531758] [2023-11-26 12:02:11,304 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 12:02:11,305 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-26 12:02:11,305 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-26 12:02:11,306 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-26 12:02:11,306 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-26 12:02:11,941 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 79 out of 125 [2023-11-26 12:02:11,942 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 116 transitions, 242 flow. Second operand has 4 states, 4 states have (on average 79.75) internal successors, (319), 4 states have internal predecessors, (319), 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) [2023-11-26 12:02:11,942 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 12:02:11,942 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 79 of 125 [2023-11-26 12:02:11,943 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 12:02:12,524 INFO L124 PetriNetUnfolderBase]: 706/1406 cut-off events. [2023-11-26 12:02:12,524 INFO L125 PetriNetUnfolderBase]: For 21/22 co-relation queries the response was YES. [2023-11-26 12:02:12,528 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2332 conditions, 1406 events. 706/1406 cut-off events. For 21/22 co-relation queries the response was YES. Maximal size of possible extension queue 97. Compared 8024 event pairs, 266 based on Foata normal form. 0/835 useless extension candidates. Maximal degree in co-relation 2282. Up to 892 conditions per place. [2023-11-26 12:02:12,545 INFO L140 encePairwiseOnDemand]: 112/125 looper letters, 43 selfloop transitions, 10 changer transitions 0/125 dead transitions. [2023-11-26 12:02:12,545 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 125 transitions, 368 flow [2023-11-26 12:02:12,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-26 12:02:12,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-26 12:02:12,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 372 transitions. [2023-11-26 12:02:12,550 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.744 [2023-11-26 12:02:12,550 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 372 transitions. [2023-11-26 12:02:12,550 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 372 transitions. [2023-11-26 12:02:12,551 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 12:02:12,551 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 372 transitions. [2023-11-26 12:02:12,553 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 93.0) internal successors, (372), 4 states have internal predecessors, (372), 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) [2023-11-26 12:02:12,557 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 125.0) internal successors, (625), 5 states have internal predecessors, (625), 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) [2023-11-26 12:02:12,558 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 125.0) internal successors, (625), 5 states have internal predecessors, (625), 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) [2023-11-26 12:02:12,558 INFO L175 Difference]: Start difference. First operand has 107 places, 116 transitions, 242 flow. Second operand 4 states and 372 transitions. [2023-11-26 12:02:12,559 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 125 transitions, 368 flow [2023-11-26 12:02:12,562 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 125 transitions, 362 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-26 12:02:12,566 INFO L231 Difference]: Finished difference. Result has 111 places, 125 transitions, 320 flow [2023-11-26 12:02:12,567 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=125, PETRI_DIFFERENCE_MINUEND_FLOW=238, PETRI_DIFFERENCE_MINUEND_PLACES=105, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=116, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=106, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=320, PETRI_PLACES=111, PETRI_TRANSITIONS=125} [2023-11-26 12:02:12,568 INFO L281 CegarLoopForPetriNet]: 116 programPoint places, -5 predicate places. [2023-11-26 12:02:12,568 INFO L495 AbstractCegarLoop]: Abstraction has has 111 places, 125 transitions, 320 flow [2023-11-26 12:02:12,568 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 79.75) internal successors, (319), 4 states have internal predecessors, (319), 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) [2023-11-26 12:02:12,569 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 12:02:12,570 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1] [2023-11-26 12:02:12,581 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13a81e6b-a681-4a1e-94d6-de0a897cf9bb/bin/uautomizer-verify-VRDe98Ueme/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 [2023-11-26 12:02:12,775 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13a81e6b-a681-4a1e-94d6-de0a897cf9bb/bin/uautomizer-verify-VRDe98Ueme/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 [2023-11-26 12:02:12,776 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 56 more)] === [2023-11-26 12:02:12,776 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:02:12,776 INFO L85 PathProgramCache]: Analyzing trace with hash 740945681, now seen corresponding path program 1 times [2023-11-26 12:02:12,777 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-26 12:02:12,777 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [89708596] [2023-11-26 12:02:12,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:02:12,778 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 [2023-11-26 12:02:12,778 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13a81e6b-a681-4a1e-94d6-de0a897cf9bb/bin/uautomizer-verify-VRDe98Ueme/mathsat [2023-11-26 12:02:12,779 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13a81e6b-a681-4a1e-94d6-de0a897cf9bb/bin/uautomizer-verify-VRDe98Ueme/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) [2023-11-26 12:02:12,795 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13a81e6b-a681-4a1e-94d6-de0a897cf9bb/bin/uautomizer-verify-VRDe98Ueme/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 [2023-11-26 12:02:12,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:02:12,873 INFO L262 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 10 conjunts are in the unsatisfiable core [2023-11-26 12:02:12,875 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 12:02:12,898 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 7 [2023-11-26 12:02:12,923 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 12:02:12,924 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1 [2023-11-26 12:02:12,935 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 12:02:12,936 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-26 12:02:12,943 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 12:02:12,944 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-26 12:02:12,956 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 12:02:12,957 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-26 12:02:12,967 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 12:02:12,968 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-26 12:02:12,979 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 12:02:12,980 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-26 12:02:12,991 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 12:02:12,991 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-26 12:02:13,005 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 12:02:13,006 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-26 12:02:13,026 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 12:02:13,027 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1 [2023-11-26 12:02:13,040 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 12:02:13,041 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-26 12:02:13,048 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 12:02:13,049 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-26 12:02:13,069 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 12:02:13,069 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-26 12:02:13,092 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 12:02:13,093 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1 [2023-11-26 12:02:13,119 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 12:02:13,120 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1 [2023-11-26 12:02:13,163 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 12:02:13,163 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 7 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2023-11-26 12:02:13,204 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 12:02:13,204 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-26 12:02:13,227 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 12:02:13,228 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1 [2023-11-26 12:02:13,243 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 12:02:13,244 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-26 12:02:13,252 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 12:02:13,253 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-26 12:02:13,267 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 12:02:13,267 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-26 12:02:13,275 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 12:02:13,276 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-26 12:02:13,291 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 12:02:13,292 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-26 12:02:13,314 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 12:02:13,315 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1 [2023-11-26 12:02:13,496 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 12:02:13,496 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 12:02:13,954 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 12:02:13,955 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-26 12:02:13,955 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [89708596] [2023-11-26 12:02:13,955 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [89708596] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-26 12:02:13,955 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-26 12:02:13,955 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 8 [2023-11-26 12:02:13,955 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [24678263] [2023-11-26 12:02:13,956 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-26 12:02:13,956 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-26 12:02:13,956 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-26 12:02:13,957 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-26 12:02:13,957 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2023-11-26 12:02:16,842 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 79 out of 125 [2023-11-26 12:02:16,843 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 125 transitions, 320 flow. Second operand has 10 states, 10 states have (on average 80.0) internal successors, (800), 10 states have internal predecessors, (800), 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) [2023-11-26 12:02:16,843 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 12:02:16,843 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 79 of 125 [2023-11-26 12:02:16,844 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 12:02:19,808 INFO L124 PetriNetUnfolderBase]: 715/1433 cut-off events. [2023-11-26 12:02:19,809 INFO L125 PetriNetUnfolderBase]: For 29/30 co-relation queries the response was YES. [2023-11-26 12:02:19,814 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2450 conditions, 1433 events. 715/1433 cut-off events. For 29/30 co-relation queries the response was YES. Maximal size of possible extension queue 97. Compared 8210 event pairs, 266 based on Foata normal form. 0/862 useless extension candidates. Maximal degree in co-relation 2296. Up to 895 conditions per place. [2023-11-26 12:02:19,829 INFO L140 encePairwiseOnDemand]: 112/125 looper letters, 43 selfloop transitions, 37 changer transitions 0/152 dead transitions. [2023-11-26 12:02:19,829 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 120 places, 152 transitions, 600 flow [2023-11-26 12:02:19,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-26 12:02:19,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-11-26 12:02:19,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 879 transitions. [2023-11-26 12:02:19,835 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7032 [2023-11-26 12:02:19,835 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 879 transitions. [2023-11-26 12:02:19,835 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 879 transitions. [2023-11-26 12:02:19,836 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 12:02:19,836 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 879 transitions. [2023-11-26 12:02:19,840 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 87.9) internal successors, (879), 10 states have internal predecessors, (879), 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) [2023-11-26 12:02:19,846 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 125.0) internal successors, (1375), 11 states have internal predecessors, (1375), 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) [2023-11-26 12:02:19,848 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 125.0) internal successors, (1375), 11 states have internal predecessors, (1375), 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) [2023-11-26 12:02:19,848 INFO L175 Difference]: Start difference. First operand has 111 places, 125 transitions, 320 flow. Second operand 10 states and 879 transitions. [2023-11-26 12:02:19,848 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 120 places, 152 transitions, 600 flow [2023-11-26 12:02:19,850 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 120 places, 152 transitions, 600 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-26 12:02:19,853 INFO L231 Difference]: Finished difference. Result has 123 places, 152 transitions, 564 flow [2023-11-26 12:02:19,854 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=125, PETRI_DIFFERENCE_MINUEND_FLOW=320, PETRI_DIFFERENCE_MINUEND_PLACES=111, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=125, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=108, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=564, PETRI_PLACES=123, PETRI_TRANSITIONS=152} [2023-11-26 12:02:19,855 INFO L281 CegarLoopForPetriNet]: 116 programPoint places, 7 predicate places. [2023-11-26 12:02:19,855 INFO L495 AbstractCegarLoop]: Abstraction has has 123 places, 152 transitions, 564 flow [2023-11-26 12:02:19,856 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 80.0) internal successors, (800), 10 states have internal predecessors, (800), 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) [2023-11-26 12:02:19,856 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 12:02:19,857 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-11-26 12:02:19,864 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13a81e6b-a681-4a1e-94d6-de0a897cf9bb/bin/uautomizer-verify-VRDe98Ueme/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Ended with exit code 0 [2023-11-26 12:02:20,059 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13a81e6b-a681-4a1e-94d6-de0a897cf9bb/bin/uautomizer-verify-VRDe98Ueme/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 [2023-11-26 12:02:20,059 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 56 more)] === [2023-11-26 12:02:20,060 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:02:20,060 INFO L85 PathProgramCache]: Analyzing trace with hash 740979200, now seen corresponding path program 1 times [2023-11-26 12:02:20,061 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-26 12:02:20,061 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1488907632] [2023-11-26 12:02:20,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:02:20,061 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 [2023-11-26 12:02:20,061 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13a81e6b-a681-4a1e-94d6-de0a897cf9bb/bin/uautomizer-verify-VRDe98Ueme/mathsat [2023-11-26 12:02:20,062 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13a81e6b-a681-4a1e-94d6-de0a897cf9bb/bin/uautomizer-verify-VRDe98Ueme/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) [2023-11-26 12:02:20,063 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13a81e6b-a681-4a1e-94d6-de0a897cf9bb/bin/uautomizer-verify-VRDe98Ueme/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 [2023-11-26 12:02:20,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:02:20,181 INFO L262 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-26 12:02:20,183 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 12:02:20,210 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 12:02:20,219 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 12:02:20,221 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 11 [2023-11-26 12:02:20,248 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 12:02:20,258 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 12:02:20,279 INFO L349 Elim1Store]: treesize reduction 17, result has 5.6 percent of original size [2023-11-26 12:02:20,279 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 1 [2023-11-26 12:02:20,295 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 12:02:20,304 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 12:02:20,316 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 12:02:20,324 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 12:02:20,338 INFO L349 Elim1Store]: treesize reduction 17, result has 5.6 percent of original size [2023-11-26 12:02:20,338 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 31 treesize of output 1 [2023-11-26 12:02:20,348 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 12:02:20,357 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 12:02:20,361 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 12:02:20,365 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 1 [2023-11-26 12:02:20,377 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 12:02:20,397 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 12:02:20,415 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 12:02:20,434 INFO L349 Elim1Store]: treesize reduction 38, result has 2.6 percent of original size [2023-11-26 12:02:20,434 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 5 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 40 treesize of output 1 [2023-11-26 12:02:20,447 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 12:02:20,449 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 12:02:20,460 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 12:02:20,467 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 12:02:20,479 INFO L349 Elim1Store]: treesize reduction 17, result has 5.6 percent of original size [2023-11-26 12:02:20,480 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 31 treesize of output 1 [2023-11-26 12:02:20,505 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 12:02:20,506 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 13 [2023-11-26 12:02:20,538 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 12:02:20,538 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 20 [2023-11-26 12:02:20,630 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 12:02:20,630 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 12:02:20,631 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-26 12:02:20,631 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1488907632] [2023-11-26 12:02:20,631 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1488907632] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 12:02:20,631 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 12:02:20,631 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-26 12:02:20,631 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [411253895] [2023-11-26 12:02:20,631 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 12:02:20,632 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-26 12:02:20,632 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-26 12:02:20,632 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-26 12:02:20,633 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-26 12:02:21,349 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 80 out of 125 [2023-11-26 12:02:21,350 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 123 places, 152 transitions, 564 flow. Second operand has 4 states, 4 states have (on average 81.25) internal successors, (325), 4 states have internal predecessors, (325), 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) [2023-11-26 12:02:21,350 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 12:02:21,350 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 80 of 125 [2023-11-26 12:02:21,351 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 12:02:21,822 INFO L124 PetriNetUnfolderBase]: 715/1396 cut-off events. [2023-11-26 12:02:21,823 INFO L125 PetriNetUnfolderBase]: For 61/62 co-relation queries the response was YES. [2023-11-26 12:02:21,827 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2476 conditions, 1396 events. 715/1396 cut-off events. For 61/62 co-relation queries the response was YES. Maximal size of possible extension queue 90. Compared 7680 event pairs, 266 based on Foata normal form. 65/933 useless extension candidates. Maximal degree in co-relation 2387. Up to 923 conditions per place. [2023-11-26 12:02:21,841 INFO L140 encePairwiseOnDemand]: 122/125 looper letters, 76 selfloop transitions, 1 changer transitions 0/150 dead transitions. [2023-11-26 12:02:21,841 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 123 places, 150 transitions, 714 flow [2023-11-26 12:02:21,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 12:02:21,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-26 12:02:21,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 283 transitions. [2023-11-26 12:02:21,844 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7546666666666667 [2023-11-26 12:02:21,844 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 283 transitions. [2023-11-26 12:02:21,844 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 283 transitions. [2023-11-26 12:02:21,845 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 12:02:21,845 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 283 transitions. [2023-11-26 12:02:21,846 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 94.33333333333333) internal successors, (283), 3 states have internal predecessors, (283), 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) [2023-11-26 12:02:21,848 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 125.0) internal successors, (500), 4 states have internal predecessors, (500), 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) [2023-11-26 12:02:21,848 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 125.0) internal successors, (500), 4 states have internal predecessors, (500), 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) [2023-11-26 12:02:21,849 INFO L175 Difference]: Start difference. First operand has 123 places, 152 transitions, 564 flow. Second operand 3 states and 283 transitions. [2023-11-26 12:02:21,849 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 123 places, 150 transitions, 714 flow [2023-11-26 12:02:21,853 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 119 places, 150 transitions, 619 flow, removed 25 selfloop flow, removed 4 redundant places. [2023-11-26 12:02:21,857 INFO L231 Difference]: Finished difference. Result has 119 places, 150 transitions, 467 flow [2023-11-26 12:02:21,857 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=125, PETRI_DIFFERENCE_MINUEND_FLOW=465, PETRI_DIFFERENCE_MINUEND_PLACES=117, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=150, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=149, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=467, PETRI_PLACES=119, PETRI_TRANSITIONS=150} [2023-11-26 12:02:21,858 INFO L281 CegarLoopForPetriNet]: 116 programPoint places, 3 predicate places. [2023-11-26 12:02:21,858 INFO L495 AbstractCegarLoop]: Abstraction has has 119 places, 150 transitions, 467 flow [2023-11-26 12:02:21,859 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 81.25) internal successors, (325), 4 states have internal predecessors, (325), 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) [2023-11-26 12:02:21,859 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 12:02:21,859 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-11-26 12:02:21,869 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13a81e6b-a681-4a1e-94d6-de0a897cf9bb/bin/uautomizer-verify-VRDe98Ueme/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 [2023-11-26 12:02:22,062 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13a81e6b-a681-4a1e-94d6-de0a897cf9bb/bin/uautomizer-verify-VRDe98Ueme/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 [2023-11-26 12:02:22,062 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 56 more)] === [2023-11-26 12:02:22,063 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:02:22,063 INFO L85 PathProgramCache]: Analyzing trace with hash 740979201, now seen corresponding path program 1 times [2023-11-26 12:02:22,063 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-26 12:02:22,063 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2127126180] [2023-11-26 12:02:22,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:02:22,063 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 [2023-11-26 12:02:22,063 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13a81e6b-a681-4a1e-94d6-de0a897cf9bb/bin/uautomizer-verify-VRDe98Ueme/mathsat [2023-11-26 12:02:22,064 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13a81e6b-a681-4a1e-94d6-de0a897cf9bb/bin/uautomizer-verify-VRDe98Ueme/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) [2023-11-26 12:02:22,071 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13a81e6b-a681-4a1e-94d6-de0a897cf9bb/bin/uautomizer-verify-VRDe98Ueme/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 [2023-11-26 12:02:22,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:02:22,195 INFO L262 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 13 conjunts are in the unsatisfiable core [2023-11-26 12:02:22,198 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 12:02:22,225 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 12:02:22,230 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 12:02:22,234 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2023-11-26 12:02:22,248 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 12:02:22,249 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 5 [2023-11-26 12:02:22,268 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 12:02:22,272 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 12:02:22,275 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-26 12:02:22,302 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 12:02:22,304 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 12:02:22,311 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 12:02:22,331 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 12:02:22,340 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 7 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 1 [2023-11-26 12:02:22,363 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 12:02:22,366 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 12:02:22,372 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-26 12:02:22,391 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 12:02:22,398 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 12:02:22,408 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 12:02:22,416 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 1 [2023-11-26 12:02:22,425 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 12:02:22,430 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 12:02:22,433 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-26 12:02:22,480 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 12:02:22,481 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 9 [2023-11-26 12:02:22,517 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 12:02:22,518 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 9 [2023-11-26 12:02:22,577 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 12:02:22,577 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 12:02:22,578 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-26 12:02:22,578 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2127126180] [2023-11-26 12:02:22,578 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2127126180] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 12:02:22,578 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 12:02:22,578 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-26 12:02:22,579 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1123964924] [2023-11-26 12:02:22,579 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 12:02:22,579 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-26 12:02:22,579 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-26 12:02:22,580 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-26 12:02:22,580 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-26 12:02:23,071 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 80 out of 125 [2023-11-26 12:02:23,071 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 119 places, 150 transitions, 467 flow. Second operand has 4 states, 4 states have (on average 81.25) internal successors, (325), 4 states have internal predecessors, (325), 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) [2023-11-26 12:02:23,072 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 12:02:23,072 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 80 of 125 [2023-11-26 12:02:23,072 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 12:02:23,437 INFO L124 PetriNetUnfolderBase]: 715/1359 cut-off events. [2023-11-26 12:02:23,438 INFO L125 PetriNetUnfolderBase]: For 41/42 co-relation queries the response was YES. [2023-11-26 12:02:23,442 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2394 conditions, 1359 events. 715/1359 cut-off events. For 41/42 co-relation queries the response was YES. Maximal size of possible extension queue 84. Compared 7225 event pairs, 266 based on Foata normal form. 65/931 useless extension candidates. Maximal degree in co-relation 2381. Up to 923 conditions per place. [2023-11-26 12:02:23,454 INFO L140 encePairwiseOnDemand]: 122/125 looper letters, 76 selfloop transitions, 1 changer transitions 0/148 dead transitions. [2023-11-26 12:02:23,455 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 119 places, 148 transitions, 617 flow [2023-11-26 12:02:23,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 12:02:23,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-26 12:02:23,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 283 transitions. [2023-11-26 12:02:23,459 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7546666666666667 [2023-11-26 12:02:23,459 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 283 transitions. [2023-11-26 12:02:23,459 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 283 transitions. [2023-11-26 12:02:23,460 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 12:02:23,460 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 283 transitions. [2023-11-26 12:02:23,461 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 94.33333333333333) internal successors, (283), 3 states have internal predecessors, (283), 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) [2023-11-26 12:02:23,462 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 125.0) internal successors, (500), 4 states have internal predecessors, (500), 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) [2023-11-26 12:02:23,463 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 125.0) internal successors, (500), 4 states have internal predecessors, (500), 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) [2023-11-26 12:02:23,463 INFO L175 Difference]: Start difference. First operand has 119 places, 150 transitions, 467 flow. Second operand 3 states and 283 transitions. [2023-11-26 12:02:23,463 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 119 places, 148 transitions, 617 flow [2023-11-26 12:02:23,467 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 118 places, 148 transitions, 616 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-26 12:02:23,471 INFO L231 Difference]: Finished difference. Result has 118 places, 148 transitions, 464 flow [2023-11-26 12:02:23,472 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=125, PETRI_DIFFERENCE_MINUEND_FLOW=462, PETRI_DIFFERENCE_MINUEND_PLACES=116, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=148, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=147, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=464, PETRI_PLACES=118, PETRI_TRANSITIONS=148} [2023-11-26 12:02:23,473 INFO L281 CegarLoopForPetriNet]: 116 programPoint places, 2 predicate places. [2023-11-26 12:02:23,473 INFO L495 AbstractCegarLoop]: Abstraction has has 118 places, 148 transitions, 464 flow [2023-11-26 12:02:23,473 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 81.25) internal successors, (325), 4 states have internal predecessors, (325), 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) [2023-11-26 12:02:23,473 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 12:02:23,474 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 12:02:23,477 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13a81e6b-a681-4a1e-94d6-de0a897cf9bb/bin/uautomizer-verify-VRDe98Ueme/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 [2023-11-26 12:02:23,676 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13a81e6b-a681-4a1e-94d6-de0a897cf9bb/bin/uautomizer-verify-VRDe98Ueme/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 [2023-11-26 12:02:23,677 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 56 more)] === [2023-11-26 12:02:23,677 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:02:23,678 INFO L85 PathProgramCache]: Analyzing trace with hash -1619714240, now seen corresponding path program 1 times [2023-11-26 12:02:23,678 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-26 12:02:23,678 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1880117558] [2023-11-26 12:02:23,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:02:23,679 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 [2023-11-26 12:02:23,679 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13a81e6b-a681-4a1e-94d6-de0a897cf9bb/bin/uautomizer-verify-VRDe98Ueme/mathsat [2023-11-26 12:02:23,680 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13a81e6b-a681-4a1e-94d6-de0a897cf9bb/bin/uautomizer-verify-VRDe98Ueme/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) [2023-11-26 12:02:23,686 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13a81e6b-a681-4a1e-94d6-de0a897cf9bb/bin/uautomizer-verify-VRDe98Ueme/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 [2023-11-26 12:02:23,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:02:23,827 INFO L262 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-26 12:02:23,830 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 12:02:23,869 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 12:02:23,870 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 5 [2023-11-26 12:02:23,883 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 12:02:23,907 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 12:02:23,911 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 12:02:23,922 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 12:02:23,928 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 1 [2023-11-26 12:02:23,940 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 12:02:23,944 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 12:02:23,948 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-26 12:02:23,959 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 12:02:23,965 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 12:02:23,973 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 12:02:23,979 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 1 [2023-11-26 12:02:24,004 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-26 12:02:24,011 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-26 12:02:24,032 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 12:02:24,039 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 12:02:24,058 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 12:02:24,065 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 7 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 1 [2023-11-26 12:02:24,089 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 12:02:24,099 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-26 12:02:24,113 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-26 12:02:24,156 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 12:02:24,157 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 9 [2023-11-26 12:02:24,190 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 12:02:24,191 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 9 [2023-11-26 12:02:24,309 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 12:02:24,309 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 12:02:24,309 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-26 12:02:24,309 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1880117558] [2023-11-26 12:02:24,310 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1880117558] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 12:02:24,310 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 12:02:24,310 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-26 12:02:24,310 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1015194231] [2023-11-26 12:02:24,310 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 12:02:24,311 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-26 12:02:24,311 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-26 12:02:24,311 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-26 12:02:24,311 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-26 12:02:24,749 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 80 out of 125 [2023-11-26 12:02:24,749 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 118 places, 148 transitions, 464 flow. Second operand has 4 states, 4 states have (on average 81.75) internal successors, (327), 4 states have internal predecessors, (327), 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) [2023-11-26 12:02:24,749 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 12:02:24,750 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 80 of 125 [2023-11-26 12:02:24,750 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 12:02:25,081 INFO L124 PetriNetUnfolderBase]: 715/1345 cut-off events. [2023-11-26 12:02:25,081 INFO L125 PetriNetUnfolderBase]: For 41/42 co-relation queries the response was YES. [2023-11-26 12:02:25,086 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2381 conditions, 1345 events. 715/1345 cut-off events. For 41/42 co-relation queries the response was YES. Maximal size of possible extension queue 84. Compared 7051 event pairs, 266 based on Foata normal form. 16/882 useless extension candidates. Maximal degree in co-relation 2367. Up to 923 conditions per place. [2023-11-26 12:02:25,103 INFO L140 encePairwiseOnDemand]: 122/125 looper letters, 76 selfloop transitions, 1 changer transitions 0/146 dead transitions. [2023-11-26 12:02:25,104 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 118 places, 146 transitions, 614 flow [2023-11-26 12:02:25,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 12:02:25,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-26 12:02:25,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 283 transitions. [2023-11-26 12:02:25,107 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7546666666666667 [2023-11-26 12:02:25,107 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 283 transitions. [2023-11-26 12:02:25,107 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 283 transitions. [2023-11-26 12:02:25,107 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 12:02:25,108 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 283 transitions. [2023-11-26 12:02:25,109 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 94.33333333333333) internal successors, (283), 3 states have internal predecessors, (283), 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) [2023-11-26 12:02:25,110 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 125.0) internal successors, (500), 4 states have internal predecessors, (500), 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) [2023-11-26 12:02:25,110 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 125.0) internal successors, (500), 4 states have internal predecessors, (500), 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) [2023-11-26 12:02:25,110 INFO L175 Difference]: Start difference. First operand has 118 places, 148 transitions, 464 flow. Second operand 3 states and 283 transitions. [2023-11-26 12:02:25,111 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 118 places, 146 transitions, 614 flow [2023-11-26 12:02:25,113 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 117 places, 146 transitions, 613 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-26 12:02:25,116 INFO L231 Difference]: Finished difference. Result has 117 places, 146 transitions, 461 flow [2023-11-26 12:02:25,116 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=125, PETRI_DIFFERENCE_MINUEND_FLOW=459, PETRI_DIFFERENCE_MINUEND_PLACES=115, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=146, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=145, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=461, PETRI_PLACES=117, PETRI_TRANSITIONS=146} [2023-11-26 12:02:25,120 INFO L281 CegarLoopForPetriNet]: 116 programPoint places, 1 predicate places. [2023-11-26 12:02:25,121 INFO L495 AbstractCegarLoop]: Abstraction has has 117 places, 146 transitions, 461 flow [2023-11-26 12:02:25,121 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 81.75) internal successors, (327), 4 states have internal predecessors, (327), 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) [2023-11-26 12:02:25,121 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 12:02:25,121 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 12:02:25,130 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13a81e6b-a681-4a1e-94d6-de0a897cf9bb/bin/uautomizer-verify-VRDe98Ueme/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 [2023-11-26 12:02:25,324 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13a81e6b-a681-4a1e-94d6-de0a897cf9bb/bin/uautomizer-verify-VRDe98Ueme/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 [2023-11-26 12:02:25,324 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 56 more)] === [2023-11-26 12:02:25,325 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:02:25,325 INFO L85 PathProgramCache]: Analyzing trace with hash -1619714241, now seen corresponding path program 1 times [2023-11-26 12:02:25,325 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-26 12:02:25,325 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1984638404] [2023-11-26 12:02:25,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:02:25,326 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 [2023-11-26 12:02:25,326 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13a81e6b-a681-4a1e-94d6-de0a897cf9bb/bin/uautomizer-verify-VRDe98Ueme/mathsat [2023-11-26 12:02:25,327 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13a81e6b-a681-4a1e-94d6-de0a897cf9bb/bin/uautomizer-verify-VRDe98Ueme/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) [2023-11-26 12:02:25,338 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13a81e6b-a681-4a1e-94d6-de0a897cf9bb/bin/uautomizer-verify-VRDe98Ueme/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 [2023-11-26 12:02:25,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:02:25,475 INFO L262 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 10 conjunts are in the unsatisfiable core [2023-11-26 12:02:25,477 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 12:02:25,496 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 12:02:25,505 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 12:02:25,506 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 11 [2023-11-26 12:02:25,531 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 12:02:25,540 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 12:02:25,552 INFO L349 Elim1Store]: treesize reduction 17, result has 5.6 percent of original size [2023-11-26 12:02:25,552 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 1 [2023-11-26 12:02:25,561 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 12:02:25,566 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 12:02:25,575 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 12:02:25,585 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 12:02:25,587 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 1 [2023-11-26 12:02:25,600 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 12:02:25,624 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 12:02:25,639 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 12:02:25,654 INFO L349 Elim1Store]: treesize reduction 17, result has 5.6 percent of original size [2023-11-26 12:02:25,655 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 31 treesize of output 1 [2023-11-26 12:02:25,681 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 12:02:25,691 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 12:02:25,704 INFO L349 Elim1Store]: treesize reduction 17, result has 5.6 percent of original size [2023-11-26 12:02:25,704 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 1 [2023-11-26 12:02:25,714 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 12:02:25,723 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 12:02:25,727 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 12:02:25,731 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-11-26 12:02:25,743 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 12:02:25,753 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 12:02:25,757 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 12:02:25,760 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-11-26 12:02:25,766 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 12:02:25,781 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 12:02:25,790 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 12:02:25,803 INFO L349 Elim1Store]: treesize reduction 17, result has 5.6 percent of original size [2023-11-26 12:02:25,804 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 1 [2023-11-26 12:02:25,837 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 12:02:25,838 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 13 [2023-11-26 12:02:25,888 INFO L349 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2023-11-26 12:02:25,888 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 20 [2023-11-26 12:02:25,968 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 12:02:25,969 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 12:02:25,969 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-26 12:02:25,969 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1984638404] [2023-11-26 12:02:25,969 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1984638404] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 12:02:25,970 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 12:02:25,970 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-26 12:02:25,970 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1809108995] [2023-11-26 12:02:25,970 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 12:02:25,970 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-26 12:02:25,971 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-26 12:02:25,971 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-26 12:02:25,971 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-26 12:02:26,342 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 80 out of 125 [2023-11-26 12:02:26,343 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 117 places, 146 transitions, 461 flow. Second operand has 4 states, 4 states have (on average 81.75) internal successors, (327), 4 states have internal predecessors, (327), 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) [2023-11-26 12:02:26,343 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 12:02:26,343 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 80 of 125 [2023-11-26 12:02:26,343 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 12:02:26,637 INFO L124 PetriNetUnfolderBase]: 715/1331 cut-off events. [2023-11-26 12:02:26,637 INFO L125 PetriNetUnfolderBase]: For 41/42 co-relation queries the response was YES. [2023-11-26 12:02:26,642 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2368 conditions, 1331 events. 715/1331 cut-off events. For 41/42 co-relation queries the response was YES. Maximal size of possible extension queue 84. Compared 6887 event pairs, 266 based on Foata normal form. 16/882 useless extension candidates. Maximal degree in co-relation 2353. Up to 923 conditions per place. [2023-11-26 12:02:26,653 INFO L140 encePairwiseOnDemand]: 122/125 looper letters, 76 selfloop transitions, 1 changer transitions 0/144 dead transitions. [2023-11-26 12:02:26,653 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 117 places, 144 transitions, 611 flow [2023-11-26 12:02:26,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 12:02:26,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-26 12:02:26,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 283 transitions. [2023-11-26 12:02:26,656 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7546666666666667 [2023-11-26 12:02:26,656 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 283 transitions. [2023-11-26 12:02:26,656 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 283 transitions. [2023-11-26 12:02:26,657 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 12:02:26,657 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 283 transitions. [2023-11-26 12:02:26,681 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 94.33333333333333) internal successors, (283), 3 states have internal predecessors, (283), 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) [2023-11-26 12:02:26,682 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 125.0) internal successors, (500), 4 states have internal predecessors, (500), 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) [2023-11-26 12:02:26,682 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 125.0) internal successors, (500), 4 states have internal predecessors, (500), 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) [2023-11-26 12:02:26,683 INFO L175 Difference]: Start difference. First operand has 117 places, 146 transitions, 461 flow. Second operand 3 states and 283 transitions. [2023-11-26 12:02:26,683 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 117 places, 144 transitions, 611 flow [2023-11-26 12:02:26,686 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 116 places, 144 transitions, 610 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-26 12:02:26,688 INFO L231 Difference]: Finished difference. Result has 116 places, 144 transitions, 458 flow [2023-11-26 12:02:26,689 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=125, PETRI_DIFFERENCE_MINUEND_FLOW=456, PETRI_DIFFERENCE_MINUEND_PLACES=114, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=144, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=143, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=458, PETRI_PLACES=116, PETRI_TRANSITIONS=144} [2023-11-26 12:02:26,689 INFO L281 CegarLoopForPetriNet]: 116 programPoint places, 0 predicate places. [2023-11-26 12:02:26,690 INFO L495 AbstractCegarLoop]: Abstraction has has 116 places, 144 transitions, 458 flow [2023-11-26 12:02:26,690 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 81.75) internal successors, (327), 4 states have internal predecessors, (327), 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) [2023-11-26 12:02:26,690 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 12:02:26,690 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 12:02:26,698 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13a81e6b-a681-4a1e-94d6-de0a897cf9bb/bin/uautomizer-verify-VRDe98Ueme/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Ended with exit code 0 [2023-11-26 12:02:26,893 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13a81e6b-a681-4a1e-94d6-de0a897cf9bb/bin/uautomizer-verify-VRDe98Ueme/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 [2023-11-26 12:02:26,894 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 56 more)] === [2023-11-26 12:02:26,894 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:02:26,895 INFO L85 PathProgramCache]: Analyzing trace with hash 1328523035, now seen corresponding path program 1 times [2023-11-26 12:02:26,895 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-26 12:02:26,895 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [257509076] [2023-11-26 12:02:26,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:02:26,896 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 [2023-11-26 12:02:26,896 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13a81e6b-a681-4a1e-94d6-de0a897cf9bb/bin/uautomizer-verify-VRDe98Ueme/mathsat [2023-11-26 12:02:26,897 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13a81e6b-a681-4a1e-94d6-de0a897cf9bb/bin/uautomizer-verify-VRDe98Ueme/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) [2023-11-26 12:02:26,901 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13a81e6b-a681-4a1e-94d6-de0a897cf9bb/bin/uautomizer-verify-VRDe98Ueme/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 [2023-11-26 12:02:27,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:02:27,040 INFO L262 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-26 12:02:27,042 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 12:02:27,141 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 12:02:27,141 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 12:02:27,141 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-26 12:02:27,141 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [257509076] [2023-11-26 12:02:27,142 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [257509076] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 12:02:27,142 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 12:02:27,142 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-26 12:02:27,142 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1162903708] [2023-11-26 12:02:27,142 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 12:02:27,143 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-26 12:02:27,143 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-26 12:02:27,143 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-26 12:02:27,146 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-26 12:02:27,322 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 81 out of 125 [2023-11-26 12:02:27,323 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 116 places, 144 transitions, 458 flow. Second operand has 4 states, 4 states have (on average 82.5) internal successors, (330), 4 states have internal predecessors, (330), 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) [2023-11-26 12:02:27,323 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 12:02:27,323 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 81 of 125 [2023-11-26 12:02:27,323 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 12:02:27,942 INFO L124 PetriNetUnfolderBase]: 1257/2426 cut-off events. [2023-11-26 12:02:27,943 INFO L125 PetriNetUnfolderBase]: For 75/77 co-relation queries the response was YES. [2023-11-26 12:02:27,950 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4281 conditions, 2426 events. 1257/2426 cut-off events. For 75/77 co-relation queries the response was YES. Maximal size of possible extension queue 156. Compared 14987 event pairs, 538 based on Foata normal form. 0/1579 useless extension candidates. Maximal degree in co-relation 4265. Up to 1073 conditions per place. [2023-11-26 12:02:27,963 INFO L140 encePairwiseOnDemand]: 121/125 looper letters, 134 selfloop transitions, 3 changer transitions 0/203 dead transitions. [2023-11-26 12:02:27,963 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 119 places, 203 transitions, 943 flow [2023-11-26 12:02:27,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-26 12:02:27,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-26 12:02:27,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 405 transitions. [2023-11-26 12:02:27,967 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.81 [2023-11-26 12:02:27,967 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 405 transitions. [2023-11-26 12:02:27,967 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 405 transitions. [2023-11-26 12:02:27,967 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 12:02:27,968 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 405 transitions. [2023-11-26 12:02:27,969 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 101.25) internal successors, (405), 4 states have internal predecessors, (405), 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) [2023-11-26 12:02:27,970 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 125.0) internal successors, (625), 5 states have internal predecessors, (625), 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) [2023-11-26 12:02:27,971 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 125.0) internal successors, (625), 5 states have internal predecessors, (625), 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) [2023-11-26 12:02:27,971 INFO L175 Difference]: Start difference. First operand has 116 places, 144 transitions, 458 flow. Second operand 4 states and 405 transitions. [2023-11-26 12:02:27,971 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 119 places, 203 transitions, 943 flow [2023-11-26 12:02:27,974 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 118 places, 203 transitions, 942 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-26 12:02:27,978 INFO L231 Difference]: Finished difference. Result has 119 places, 144 transitions, 466 flow [2023-11-26 12:02:27,979 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=125, PETRI_DIFFERENCE_MINUEND_FLOW=457, PETRI_DIFFERENCE_MINUEND_PLACES=115, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=144, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=141, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=466, PETRI_PLACES=119, PETRI_TRANSITIONS=144} [2023-11-26 12:02:27,982 INFO L281 CegarLoopForPetriNet]: 116 programPoint places, 3 predicate places. [2023-11-26 12:02:27,982 INFO L495 AbstractCegarLoop]: Abstraction has has 119 places, 144 transitions, 466 flow [2023-11-26 12:02:27,982 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 82.5) internal successors, (330), 4 states have internal predecessors, (330), 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) [2023-11-26 12:02:27,982 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 12:02:27,983 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 12:02:27,996 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13a81e6b-a681-4a1e-94d6-de0a897cf9bb/bin/uautomizer-verify-VRDe98Ueme/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2023-11-26 12:02:28,185 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13a81e6b-a681-4a1e-94d6-de0a897cf9bb/bin/uautomizer-verify-VRDe98Ueme/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 [2023-11-26 12:02:28,186 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 56 more)] === [2023-11-26 12:02:28,186 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:02:28,186 INFO L85 PathProgramCache]: Analyzing trace with hash -141102400, now seen corresponding path program 1 times [2023-11-26 12:02:28,186 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-26 12:02:28,187 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1078042831] [2023-11-26 12:02:28,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:02:28,187 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 [2023-11-26 12:02:28,187 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13a81e6b-a681-4a1e-94d6-de0a897cf9bb/bin/uautomizer-verify-VRDe98Ueme/mathsat [2023-11-26 12:02:28,188 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13a81e6b-a681-4a1e-94d6-de0a897cf9bb/bin/uautomizer-verify-VRDe98Ueme/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) [2023-11-26 12:02:28,191 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13a81e6b-a681-4a1e-94d6-de0a897cf9bb/bin/uautomizer-verify-VRDe98Ueme/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2023-11-26 12:02:28,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:02:28,334 INFO L262 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-26 12:02:28,335 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 12:02:28,426 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-26 12:02:28,426 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 12:02:28,427 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-26 12:02:28,427 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1078042831] [2023-11-26 12:02:28,427 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1078042831] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 12:02:28,427 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 12:02:28,427 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-26 12:02:28,427 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [176816558] [2023-11-26 12:02:28,427 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 12:02:28,427 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-26 12:02:28,428 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-26 12:02:28,428 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-26 12:02:28,428 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-26 12:02:28,586 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 81 out of 125 [2023-11-26 12:02:28,587 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 119 places, 144 transitions, 466 flow. Second operand has 5 states, 5 states have (on average 82.6) internal successors, (413), 5 states have internal predecessors, (413), 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) [2023-11-26 12:02:28,587 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 12:02:28,587 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 81 of 125 [2023-11-26 12:02:28,587 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 12:02:29,532 INFO L124 PetriNetUnfolderBase]: 2644/5197 cut-off events. [2023-11-26 12:02:29,533 INFO L125 PetriNetUnfolderBase]: For 215/219 co-relation queries the response was YES. [2023-11-26 12:02:29,550 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9073 conditions, 5197 events. 2644/5197 cut-off events. For 215/219 co-relation queries the response was YES. Maximal size of possible extension queue 282. Compared 37843 event pairs, 873 based on Foata normal form. 38/3525 useless extension candidates. Maximal degree in co-relation 9055. Up to 1396 conditions per place. [2023-11-26 12:02:29,664 INFO L140 encePairwiseOnDemand]: 119/125 looper letters, 144 selfloop transitions, 9 changer transitions 0/219 dead transitions. [2023-11-26 12:02:29,664 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 123 places, 219 transitions, 977 flow [2023-11-26 12:02:29,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-26 12:02:29,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-26 12:02:29,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 514 transitions. [2023-11-26 12:02:29,668 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8224 [2023-11-26 12:02:29,668 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 514 transitions. [2023-11-26 12:02:29,668 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 514 transitions. [2023-11-26 12:02:29,668 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 12:02:29,669 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 514 transitions. [2023-11-26 12:02:29,670 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 102.8) internal successors, (514), 5 states have internal predecessors, (514), 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) [2023-11-26 12:02:29,672 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 125.0) internal successors, (750), 6 states have internal predecessors, (750), 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) [2023-11-26 12:02:29,672 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 125.0) internal successors, (750), 6 states have internal predecessors, (750), 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) [2023-11-26 12:02:29,673 INFO L175 Difference]: Start difference. First operand has 119 places, 144 transitions, 466 flow. Second operand 5 states and 514 transitions. [2023-11-26 12:02:29,673 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 123 places, 219 transitions, 977 flow [2023-11-26 12:02:29,677 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 122 places, 219 transitions, 973 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-11-26 12:02:29,680 INFO L231 Difference]: Finished difference. Result has 124 places, 145 transitions, 495 flow [2023-11-26 12:02:29,680 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=125, PETRI_DIFFERENCE_MINUEND_FLOW=462, PETRI_DIFFERENCE_MINUEND_PLACES=118, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=144, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=135, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=495, PETRI_PLACES=124, PETRI_TRANSITIONS=145} [2023-11-26 12:02:29,681 INFO L281 CegarLoopForPetriNet]: 116 programPoint places, 8 predicate places. [2023-11-26 12:02:29,681 INFO L495 AbstractCegarLoop]: Abstraction has has 124 places, 145 transitions, 495 flow [2023-11-26 12:02:29,682 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 82.6) internal successors, (413), 5 states have internal predecessors, (413), 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) [2023-11-26 12:02:29,682 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 12:02:29,682 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 4, 1, 1] [2023-11-26 12:02:29,688 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13a81e6b-a681-4a1e-94d6-de0a897cf9bb/bin/uautomizer-verify-VRDe98Ueme/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2023-11-26 12:02:29,888 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13a81e6b-a681-4a1e-94d6-de0a897cf9bb/bin/uautomizer-verify-VRDe98Ueme/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 [2023-11-26 12:02:29,888 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 56 more)] === [2023-11-26 12:02:29,889 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:02:29,889 INFO L85 PathProgramCache]: Analyzing trace with hash -1032711744, now seen corresponding path program 2 times [2023-11-26 12:02:29,889 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-26 12:02:29,889 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1232412224] [2023-11-26 12:02:29,889 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-26 12:02:29,889 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 [2023-11-26 12:02:29,890 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13a81e6b-a681-4a1e-94d6-de0a897cf9bb/bin/uautomizer-verify-VRDe98Ueme/mathsat [2023-11-26 12:02:29,890 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13a81e6b-a681-4a1e-94d6-de0a897cf9bb/bin/uautomizer-verify-VRDe98Ueme/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) [2023-11-26 12:02:29,896 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13a81e6b-a681-4a1e-94d6-de0a897cf9bb/bin/uautomizer-verify-VRDe98Ueme/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2023-11-26 12:02:30,012 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-26 12:02:30,012 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-26 12:02:30,016 INFO L262 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-26 12:02:30,018 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 12:02:30,036 INFO L378 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 [2023-11-26 12:02:30,048 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 12:02:30,049 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-26 12:02:30,060 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 12:02:30,061 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-26 12:02:30,079 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 12:02:30,080 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1 [2023-11-26 12:02:30,088 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 12:02:30,089 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-26 12:02:30,099 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 12:02:30,100 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-26 12:02:30,124 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 12:02:30,125 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1 [2023-11-26 12:02:30,150 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 12:02:30,151 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 7 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2023-11-26 12:02:30,168 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 12:02:30,169 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-26 12:02:30,189 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 12:02:30,189 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1 [2023-11-26 12:02:30,216 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 12:02:30,216 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-26 12:02:30,231 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 12:02:30,232 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1 [2023-11-26 12:02:30,245 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 12:02:30,246 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-26 12:02:30,253 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 12:02:30,254 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-26 12:02:30,266 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 12:02:30,266 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-26 12:02:30,277 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 12:02:30,278 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-26 12:02:30,289 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 12:02:30,289 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-26 12:02:30,307 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 12:02:30,308 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1 [2023-11-26 12:02:30,316 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 12:02:30,316 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-26 12:02:30,333 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 12:02:30,334 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-26 12:02:30,349 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 12:02:30,350 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-26 12:02:30,365 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 12:02:30,366 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1 [2023-11-26 12:02:30,373 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 12:02:30,374 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-26 12:02:30,383 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 12:02:30,384 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-26 12:02:30,710 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 12:02:30,710 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 12:02:31,612 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 12:02:31,612 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-26 12:02:31,612 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1232412224] [2023-11-26 12:02:31,612 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1232412224] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-26 12:02:31,612 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-26 12:02:31,612 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 12 [2023-11-26 12:02:31,613 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [462436483] [2023-11-26 12:02:31,613 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-26 12:02:31,613 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-11-26 12:02:31,614 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-26 12:02:31,614 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-11-26 12:02:31,614 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=129, Unknown=0, NotChecked=0, Total=182 [2023-11-26 12:02:40,500 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 79 out of 125 [2023-11-26 12:02:40,502 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 124 places, 145 transitions, 495 flow. Second operand has 14 states, 14 states have (on average 80.57142857142857) internal successors, (1128), 14 states have internal predecessors, (1128), 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) [2023-11-26 12:02:40,502 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 12:02:40,502 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 79 of 125 [2023-11-26 12:02:40,502 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 12:02:47,236 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.68s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-26 12:02:49,242 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-26 12:02:52,184 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.94s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-26 12:02:53,375 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.19s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers []