./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/weaver/parallel-misc-1.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_5006d8ce-3a1a-4930-a55a-c63476efc892/bin/uautomizer-verify-BQ2R08f2Ya/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5006d8ce-3a1a-4930-a55a-c63476efc892/bin/uautomizer-verify-BQ2R08f2Ya/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5006d8ce-3a1a-4930-a55a-c63476efc892/bin/uautomizer-verify-BQ2R08f2Ya/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5006d8ce-3a1a-4930-a55a-c63476efc892/bin/uautomizer-verify-BQ2R08f2Ya/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/weaver/parallel-misc-1.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5006d8ce-3a1a-4930-a55a-c63476efc892/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5006d8ce-3a1a-4930-a55a-c63476efc892/bin/uautomizer-verify-BQ2R08f2Ya --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 faddac23864cc4e42f962ac43a8d0f59593853dbb1d55e3baabe0c76b2187dd4 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-29 00:13:43,749 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-29 00:13:43,827 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5006d8ce-3a1a-4930-a55a-c63476efc892/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2023-11-29 00:13:43,834 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-29 00:13:43,835 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-29 00:13:43,863 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-29 00:13:43,864 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-29 00:13:43,864 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-29 00:13:43,865 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-29 00:13:43,866 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-29 00:13:43,867 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-29 00:13:43,867 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-29 00:13:43,868 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-29 00:13:43,869 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-29 00:13:43,870 INFO L153 SettingsManager]: * Use SBE=true [2023-11-29 00:13:43,871 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-29 00:13:43,871 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-29 00:13:43,872 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-29 00:13:43,873 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-29 00:13:43,873 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-29 00:13:43,874 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-29 00:13:43,875 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-29 00:13:43,875 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-29 00:13:43,876 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-29 00:13:43,876 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-29 00:13:43,877 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-29 00:13:43,878 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-29 00:13:43,878 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-29 00:13:43,879 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-29 00:13:43,879 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-29 00:13:43,880 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-29 00:13:43,880 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-29 00:13:43,881 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 00:13:43,881 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-29 00:13:43,881 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-29 00:13:43,882 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-29 00:13:43,882 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-29 00:13:43,882 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-29 00:13:43,882 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-29 00:13:43,883 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-29 00:13:43,883 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-29 00:13:43,883 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_5006d8ce-3a1a-4930-a55a-c63476efc892/bin/uautomizer-verify-BQ2R08f2Ya/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5006d8ce-3a1a-4930-a55a-c63476efc892/bin/uautomizer-verify-BQ2R08f2Ya Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> faddac23864cc4e42f962ac43a8d0f59593853dbb1d55e3baabe0c76b2187dd4 [2023-11-29 00:13:44,154 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-29 00:13:44,180 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-29 00:13:44,184 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-29 00:13:44,185 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-29 00:13:44,185 INFO L274 PluginConnector]: CDTParser initialized [2023-11-29 00:13:44,187 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5006d8ce-3a1a-4930-a55a-c63476efc892/bin/uautomizer-verify-BQ2R08f2Ya/../../sv-benchmarks/c/weaver/parallel-misc-1.wvr.c [2023-11-29 00:13:47,569 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-29 00:13:47,825 INFO L384 CDTParser]: Found 1 translation units. [2023-11-29 00:13:47,826 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5006d8ce-3a1a-4930-a55a-c63476efc892/sv-benchmarks/c/weaver/parallel-misc-1.wvr.c [2023-11-29 00:13:47,837 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5006d8ce-3a1a-4930-a55a-c63476efc892/bin/uautomizer-verify-BQ2R08f2Ya/data/765e7878b/000267b313bf4b0c9eb286449f57960f/FLAG43f0a60ba [2023-11-29 00:13:47,856 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5006d8ce-3a1a-4930-a55a-c63476efc892/bin/uautomizer-verify-BQ2R08f2Ya/data/765e7878b/000267b313bf4b0c9eb286449f57960f [2023-11-29 00:13:47,858 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-29 00:13:47,860 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-29 00:13:47,861 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-29 00:13:47,861 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-29 00:13:47,867 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-29 00:13:47,868 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 12:13:47" (1/1) ... [2023-11-29 00:13:47,869 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@39b871a5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:13:47, skipping insertion in model container [2023-11-29 00:13:47,869 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 12:13:47" (1/1) ... [2023-11-29 00:13:47,903 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-29 00:13:48,119 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 00:13:48,133 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) [2023-11-29 00:13:48,134 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@24fb441b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:13:48, skipping insertion in model container [2023-11-29 00:13:48,134 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-29 00:13:48,134 INFO L186 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2023-11-29 00:13:48,137 INFO L158 Benchmark]: Toolchain (without parser) took 275.70ms. Allocated memory is still 159.4MB. Free memory was 125.8MB in the beginning and 115.5MB in the end (delta: 10.3MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-11-29 00:13:48,137 INFO L158 Benchmark]: CDTParser took 0.28ms. Allocated memory is still 159.4MB. Free memory is still 131.0MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-29 00:13:48,138 INFO L158 Benchmark]: CACSL2BoogieTranslator took 273.07ms. Allocated memory is still 159.4MB. Free memory was 125.2MB in the beginning and 115.5MB in the end (delta: 9.8MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-11-29 00:13:48,140 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28ms. Allocated memory is still 159.4MB. Free memory is still 131.0MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 273.07ms. Allocated memory is still 159.4MB. Free memory was 125.2MB in the beginning and 115.5MB 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: 112]: 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_5006d8ce-3a1a-4930-a55a-c63476efc892/bin/uautomizer-verify-BQ2R08f2Ya/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5006d8ce-3a1a-4930-a55a-c63476efc892/bin/uautomizer-verify-BQ2R08f2Ya/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5006d8ce-3a1a-4930-a55a-c63476efc892/bin/uautomizer-verify-BQ2R08f2Ya/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5006d8ce-3a1a-4930-a55a-c63476efc892/bin/uautomizer-verify-BQ2R08f2Ya/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/weaver/parallel-misc-1.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5006d8ce-3a1a-4930-a55a-c63476efc892/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5006d8ce-3a1a-4930-a55a-c63476efc892/bin/uautomizer-verify-BQ2R08f2Ya --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 faddac23864cc4e42f962ac43a8d0f59593853dbb1d55e3baabe0c76b2187dd4 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-29 00:13:50,122 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-29 00:13:50,193 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5006d8ce-3a1a-4930-a55a-c63476efc892/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2023-11-29 00:13:50,206 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-29 00:13:50,207 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-29 00:13:50,233 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-29 00:13:50,234 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-29 00:13:50,235 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-29 00:13:50,236 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-29 00:13:50,236 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-29 00:13:50,237 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-29 00:13:50,237 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-29 00:13:50,238 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-29 00:13:50,239 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-29 00:13:50,239 INFO L153 SettingsManager]: * Use SBE=true [2023-11-29 00:13:50,240 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-29 00:13:50,240 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-29 00:13:50,241 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-29 00:13:50,242 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-29 00:13:50,242 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-29 00:13:50,243 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-29 00:13:50,243 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-29 00:13:50,244 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-29 00:13:50,244 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-29 00:13:50,245 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-29 00:13:50,245 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-11-29 00:13:50,246 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-11-29 00:13:50,246 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-29 00:13:50,246 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-29 00:13:50,247 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-29 00:13:50,247 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-29 00:13:50,248 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-29 00:13:50,248 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-29 00:13:50,248 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-29 00:13:50,249 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 00:13:50,249 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-29 00:13:50,249 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-29 00:13:50,249 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-11-29 00:13:50,250 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-11-29 00:13:50,250 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-29 00:13:50,250 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-29 00:13:50,250 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-29 00:13:50,251 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-29 00:13:50,251 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-11-29 00:13:50,251 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_5006d8ce-3a1a-4930-a55a-c63476efc892/bin/uautomizer-verify-BQ2R08f2Ya/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5006d8ce-3a1a-4930-a55a-c63476efc892/bin/uautomizer-verify-BQ2R08f2Ya Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> faddac23864cc4e42f962ac43a8d0f59593853dbb1d55e3baabe0c76b2187dd4 [2023-11-29 00:13:50,562 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-29 00:13:50,583 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-29 00:13:50,586 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-29 00:13:50,587 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-29 00:13:50,588 INFO L274 PluginConnector]: CDTParser initialized [2023-11-29 00:13:50,589 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5006d8ce-3a1a-4930-a55a-c63476efc892/bin/uautomizer-verify-BQ2R08f2Ya/../../sv-benchmarks/c/weaver/parallel-misc-1.wvr.c [2023-11-29 00:13:54,049 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-29 00:13:54,295 INFO L384 CDTParser]: Found 1 translation units. [2023-11-29 00:13:54,295 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5006d8ce-3a1a-4930-a55a-c63476efc892/sv-benchmarks/c/weaver/parallel-misc-1.wvr.c [2023-11-29 00:13:54,306 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5006d8ce-3a1a-4930-a55a-c63476efc892/bin/uautomizer-verify-BQ2R08f2Ya/data/1426b9d94/faec39162cc748bf975a70408328853f/FLAG0b18ac976 [2023-11-29 00:13:54,329 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5006d8ce-3a1a-4930-a55a-c63476efc892/bin/uautomizer-verify-BQ2R08f2Ya/data/1426b9d94/faec39162cc748bf975a70408328853f [2023-11-29 00:13:54,333 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-29 00:13:54,335 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-29 00:13:54,336 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-29 00:13:54,337 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-29 00:13:54,343 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-29 00:13:54,344 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 12:13:54" (1/1) ... [2023-11-29 00:13:54,345 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1ea637c0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:13:54, skipping insertion in model container [2023-11-29 00:13:54,346 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 12:13:54" (1/1) ... [2023-11-29 00:13:54,379 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-29 00:13:54,627 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 00:13:54,645 INFO L199 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2023-11-29 00:13:54,651 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-29 00:13:54,677 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 00:13:54,685 INFO L202 MainTranslator]: Completed pre-run [2023-11-29 00:13:54,721 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 00:13:54,744 INFO L206 MainTranslator]: Completed translation [2023-11-29 00:13:54,745 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:13:54 WrapperNode [2023-11-29 00:13:54,745 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-29 00:13:54,746 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-29 00:13:54,746 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-29 00:13:54,747 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-29 00:13:54,756 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:13:54" (1/1) ... [2023-11-29 00:13:54,771 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:13:54" (1/1) ... [2023-11-29 00:13:54,826 INFO L138 Inliner]: procedures = 25, calls = 42, calls flagged for inlining = 18, calls inlined = 32, statements flattened = 273 [2023-11-29 00:13:54,827 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-29 00:13:54,828 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-29 00:13:54,828 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-29 00:13:54,828 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-29 00:13:54,842 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:13:54" (1/1) ... [2023-11-29 00:13:54,842 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:13:54" (1/1) ... [2023-11-29 00:13:54,849 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:13:54" (1/1) ... [2023-11-29 00:13:54,872 INFO L175 MemorySlicer]: Split 13 memory accesses to 4 slices as follows [2, 2, 7, 2]. 54 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0, 0]. The 3 writes are split as follows [0, 1, 1, 1]. [2023-11-29 00:13:54,873 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:13:54" (1/1) ... [2023-11-29 00:13:54,873 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:13:54" (1/1) ... [2023-11-29 00:13:54,890 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:13:54" (1/1) ... [2023-11-29 00:13:54,895 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:13:54" (1/1) ... [2023-11-29 00:13:54,899 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:13:54" (1/1) ... [2023-11-29 00:13:54,902 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:13:54" (1/1) ... [2023-11-29 00:13:54,908 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-29 00:13:54,909 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-29 00:13:54,910 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-29 00:13:54,910 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-29 00:13:54,911 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:13:54" (1/1) ... [2023-11-29 00:13:54,918 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 00:13:54,932 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5006d8ce-3a1a-4930-a55a-c63476efc892/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:13:54,951 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5006d8ce-3a1a-4930-a55a-c63476efc892/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-29 00:13:54,954 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5006d8ce-3a1a-4930-a55a-c63476efc892/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-29 00:13:54,984 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-29 00:13:54,984 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-11-29 00:13:54,984 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-11-29 00:13:54,985 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-11-29 00:13:54,985 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-11-29 00:13:54,985 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2023-11-29 00:13:54,985 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#1 [2023-11-29 00:13:54,985 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#2 [2023-11-29 00:13:54,985 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#3 [2023-11-29 00:13:54,986 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-29 00:13:54,986 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-29 00:13:54,986 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#0 [2023-11-29 00:13:54,986 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#1 [2023-11-29 00:13:54,986 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#2 [2023-11-29 00:13:54,986 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#3 [2023-11-29 00:13:54,987 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-29 00:13:54,987 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-29 00:13:54,989 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-29 00:13:54,989 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#0 [2023-11-29 00:13:54,989 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#1 [2023-11-29 00:13:54,989 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#2 [2023-11-29 00:13:54,989 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#3 [2023-11-29 00:13:54,991 WARN L213 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-29 00:13:55,146 INFO L241 CfgBuilder]: Building ICFG [2023-11-29 00:13:55,149 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-29 00:13:55,998 INFO L282 CfgBuilder]: Performing block encoding [2023-11-29 00:13:56,656 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-29 00:13:56,656 INFO L309 CfgBuilder]: Removed 3 assume(true) statements. [2023-11-29 00:13:56,657 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 12:13:56 BoogieIcfgContainer [2023-11-29 00:13:56,657 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-29 00:13:56,660 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-29 00:13:56,660 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-29 00:13:56,664 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-29 00:13:56,664 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 12:13:54" (1/3) ... [2023-11-29 00:13:56,665 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@450e516d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 12:13:56, skipping insertion in model container [2023-11-29 00:13:56,665 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:13:54" (2/3) ... [2023-11-29 00:13:56,666 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@450e516d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 12:13:56, skipping insertion in model container [2023-11-29 00:13:56,666 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 12:13:56" (3/3) ... [2023-11-29 00:13:56,667 INFO L112 eAbstractionObserver]: Analyzing ICFG parallel-misc-1.wvr.c [2023-11-29 00:13:56,692 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-29 00:13:56,692 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 24 error locations. [2023-11-29 00:13:56,692 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-29 00:13:56,784 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-11-29 00:13:56,825 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 64 places, 62 transitions, 138 flow [2023-11-29 00:13:56,869 INFO L124 PetriNetUnfolderBase]: 5/60 cut-off events. [2023-11-29 00:13:56,869 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-29 00:13:56,873 INFO L83 FinitePrefix]: Finished finitePrefix Result has 69 conditions, 60 events. 5/60 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 153 event pairs, 0 based on Foata normal form. 0/31 useless extension candidates. Maximal degree in co-relation 41. Up to 2 conditions per place. [2023-11-29 00:13:56,874 INFO L82 GeneralOperation]: Start removeDead. Operand has 64 places, 62 transitions, 138 flow [2023-11-29 00:13:56,879 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 61 places, 59 transitions, 130 flow [2023-11-29 00:13:56,891 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-29 00:13:56,900 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;@2d5175d5, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-29 00:13:56,900 INFO L358 AbstractCegarLoop]: Starting to check reachability of 38 error locations. [2023-11-29 00:13:56,904 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-29 00:13:56,904 INFO L124 PetriNetUnfolderBase]: 1/4 cut-off events. [2023-11-29 00:13:56,904 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-29 00:13:56,905 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 00:13:56,905 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-11-29 00:13:56,906 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 35 more)] === [2023-11-29 00:13:56,912 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:13:56,912 INFO L85 PathProgramCache]: Analyzing trace with hash 943872, now seen corresponding path program 1 times [2023-11-29 00:13:56,927 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 00:13:56,928 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [854726105] [2023-11-29 00:13:56,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:13:56,929 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 [2023-11-29 00:13:56,929 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5006d8ce-3a1a-4930-a55a-c63476efc892/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 00:13:56,931 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5006d8ce-3a1a-4930-a55a-c63476efc892/bin/uautomizer-verify-BQ2R08f2Ya/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) [2023-11-29 00:13:56,932 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5006d8ce-3a1a-4930-a55a-c63476efc892/bin/uautomizer-verify-BQ2R08f2Ya/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 [2023-11-29 00:13:57,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:13:57,034 INFO L262 TraceCheckSpWp]: Trace formula consists of 40 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-29 00:13:57,039 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:13:57,163 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 [2023-11-29 00:13:57,182 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 00:13:57,183 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 [2023-11-29 00:13:57,199 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 00:13:57,200 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 [2023-11-29 00:13:57,206 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 00:13:57,207 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 [2023-11-29 00:13:57,222 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 00:13:57,223 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 [2023-11-29 00:13:57,242 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 00:13:57,243 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 [2023-11-29 00:13:57,253 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:13:57,253 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 00:13:57,254 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 00:13:57,254 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [854726105] [2023-11-29 00:13:57,255 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [854726105] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:13:57,255 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:13:57,255 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-29 00:13:57,257 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1461432365] [2023-11-29 00:13:57,258 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:13:57,265 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 00:13:57,270 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 00:13:57,295 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 00:13:57,296 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 00:13:57,372 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 34 out of 62 [2023-11-29 00:13:57,375 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 59 transitions, 130 flow. Second operand has 3 states, 3 states have (on average 35.0) internal successors, (105), 3 states have internal predecessors, (105), 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) [2023-11-29 00:13:57,375 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 00:13:57,376 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 34 of 62 [2023-11-29 00:13:57,377 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 00:13:57,836 INFO L124 PetriNetUnfolderBase]: 220/564 cut-off events. [2023-11-29 00:13:57,837 INFO L125 PetriNetUnfolderBase]: For 32/32 co-relation queries the response was YES. [2023-11-29 00:13:57,844 INFO L83 FinitePrefix]: Finished finitePrefix Result has 932 conditions, 564 events. 220/564 cut-off events. For 32/32 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 3343 event pairs, 130 based on Foata normal form. 1/413 useless extension candidates. Maximal degree in co-relation 848. Up to 338 conditions per place. [2023-11-29 00:13:57,851 INFO L140 encePairwiseOnDemand]: 58/62 looper letters, 23 selfloop transitions, 2 changer transitions 0/56 dead transitions. [2023-11-29 00:13:57,852 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 56 transitions, 174 flow [2023-11-29 00:13:57,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 00:13:57,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-29 00:13:57,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 129 transitions. [2023-11-29 00:13:57,873 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6935483870967742 [2023-11-29 00:13:57,874 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 129 transitions. [2023-11-29 00:13:57,875 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 129 transitions. [2023-11-29 00:13:57,876 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 00:13:57,879 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 129 transitions. [2023-11-29 00:13:57,881 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 43.0) internal successors, (129), 3 states have internal predecessors, (129), 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) [2023-11-29 00:13:57,886 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 62.0) internal successors, (248), 4 states have internal predecessors, (248), 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) [2023-11-29 00:13:57,887 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 62.0) internal successors, (248), 4 states have internal predecessors, (248), 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) [2023-11-29 00:13:57,889 INFO L175 Difference]: Start difference. First operand has 61 places, 59 transitions, 130 flow. Second operand 3 states and 129 transitions. [2023-11-29 00:13:57,890 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 56 transitions, 174 flow [2023-11-29 00:13:57,894 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 56 transitions, 166 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-11-29 00:13:57,897 INFO L231 Difference]: Finished difference. Result has 56 places, 56 transitions, 120 flow [2023-11-29 00:13:57,900 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=116, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=120, PETRI_PLACES=56, PETRI_TRANSITIONS=56} [2023-11-29 00:13:57,904 INFO L281 CegarLoopForPetriNet]: 61 programPoint places, -5 predicate places. [2023-11-29 00:13:57,904 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 56 transitions, 120 flow [2023-11-29 00:13:57,905 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.0) internal successors, (105), 3 states have internal predecessors, (105), 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) [2023-11-29 00:13:57,905 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 00:13:57,905 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-11-29 00:13:57,909 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5006d8ce-3a1a-4930-a55a-c63476efc892/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2023-11-29 00:13:58,106 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5006d8ce-3a1a-4930-a55a-c63476efc892/bin/uautomizer-verify-BQ2R08f2Ya/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 [2023-11-29 00:13:58,106 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 35 more)] === [2023-11-29 00:13:58,107 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:13:58,107 INFO L85 PathProgramCache]: Analyzing trace with hash 943873, now seen corresponding path program 1 times [2023-11-29 00:13:58,107 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 00:13:58,107 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1473783562] [2023-11-29 00:13:58,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:13:58,108 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 [2023-11-29 00:13:58,108 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5006d8ce-3a1a-4930-a55a-c63476efc892/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 00:13:58,109 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5006d8ce-3a1a-4930-a55a-c63476efc892/bin/uautomizer-verify-BQ2R08f2Ya/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) [2023-11-29 00:13:58,110 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5006d8ce-3a1a-4930-a55a-c63476efc892/bin/uautomizer-verify-BQ2R08f2Ya/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 [2023-11-29 00:13:58,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:13:58,182 INFO L262 TraceCheckSpWp]: Trace formula consists of 40 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-29 00:13:58,184 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:13:58,217 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 [2023-11-29 00:13:58,236 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 00:13:58,237 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 [2023-11-29 00:13:58,248 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 00:13:58,248 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 [2023-11-29 00:13:58,259 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 00:13:58,260 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 [2023-11-29 00:13:58,274 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 00:13:58,275 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 13 treesize of output 1 [2023-11-29 00:13:58,283 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 00:13:58,284 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 [2023-11-29 00:13:58,374 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:13:58,374 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 00:13:58,374 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 00:13:58,375 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1473783562] [2023-11-29 00:13:58,375 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1473783562] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:13:58,375 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:13:58,375 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 00:13:58,375 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [760725507] [2023-11-29 00:13:58,376 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:13:58,377 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 00:13:58,377 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 00:13:58,378 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 00:13:58,378 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 00:13:58,747 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 34 out of 62 [2023-11-29 00:13:58,748 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 56 transitions, 120 flow. Second operand has 4 states, 4 states have (on average 34.75) internal successors, (139), 4 states have internal predecessors, (139), 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) [2023-11-29 00:13:58,748 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 00:13:58,748 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 34 of 62 [2023-11-29 00:13:58,748 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 00:13:59,296 INFO L124 PetriNetUnfolderBase]: 221/567 cut-off events. [2023-11-29 00:13:59,296 INFO L125 PetriNetUnfolderBase]: For 8/8 co-relation queries the response was YES. [2023-11-29 00:13:59,298 INFO L83 FinitePrefix]: Finished finitePrefix Result has 925 conditions, 567 events. 221/567 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 3354 event pairs, 130 based on Foata normal form. 0/415 useless extension candidates. Maximal degree in co-relation 903. Up to 343 conditions per place. [2023-11-29 00:13:59,303 INFO L140 encePairwiseOnDemand]: 57/62 looper letters, 25 selfloop transitions, 4 changer transitions 0/59 dead transitions. [2023-11-29 00:13:59,303 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 59 transitions, 186 flow [2023-11-29 00:13:59,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 00:13:59,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-29 00:13:59,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 166 transitions. [2023-11-29 00:13:59,306 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6693548387096774 [2023-11-29 00:13:59,307 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 166 transitions. [2023-11-29 00:13:59,307 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 166 transitions. [2023-11-29 00:13:59,308 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 00:13:59,308 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 166 transitions. [2023-11-29 00:13:59,310 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 41.5) internal successors, (166), 4 states have internal predecessors, (166), 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) [2023-11-29 00:13:59,311 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 62.0) internal successors, (310), 5 states have internal predecessors, (310), 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) [2023-11-29 00:13:59,312 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 62.0) internal successors, (310), 5 states have internal predecessors, (310), 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) [2023-11-29 00:13:59,312 INFO L175 Difference]: Start difference. First operand has 56 places, 56 transitions, 120 flow. Second operand 4 states and 166 transitions. [2023-11-29 00:13:59,312 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 59 transitions, 186 flow [2023-11-29 00:13:59,313 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 59 transitions, 180 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-29 00:13:59,316 INFO L231 Difference]: Finished difference. Result has 59 places, 59 transitions, 143 flow [2023-11-29 00:13:59,316 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=116, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=143, PETRI_PLACES=59, PETRI_TRANSITIONS=59} [2023-11-29 00:13:59,317 INFO L281 CegarLoopForPetriNet]: 61 programPoint places, -2 predicate places. [2023-11-29 00:13:59,317 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 59 transitions, 143 flow [2023-11-29 00:13:59,318 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 34.75) internal successors, (139), 4 states have internal predecessors, (139), 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) [2023-11-29 00:13:59,318 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 00:13:59,318 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-11-29 00:13:59,320 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5006d8ce-3a1a-4930-a55a-c63476efc892/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Ended with exit code 0 [2023-11-29 00:13:59,518 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5006d8ce-3a1a-4930-a55a-c63476efc892/bin/uautomizer-verify-BQ2R08f2Ya/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 [2023-11-29 00:13:59,519 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 35 more)] === [2023-11-29 00:13:59,519 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:13:59,519 INFO L85 PathProgramCache]: Analyzing trace with hash 943932, now seen corresponding path program 1 times [2023-11-29 00:13:59,520 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 00:13:59,520 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1128480804] [2023-11-29 00:13:59,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:13:59,520 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 [2023-11-29 00:13:59,520 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5006d8ce-3a1a-4930-a55a-c63476efc892/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 00:13:59,521 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5006d8ce-3a1a-4930-a55a-c63476efc892/bin/uautomizer-verify-BQ2R08f2Ya/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) [2023-11-29 00:13:59,522 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5006d8ce-3a1a-4930-a55a-c63476efc892/bin/uautomizer-verify-BQ2R08f2Ya/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 [2023-11-29 00:13:59,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:13:59,592 INFO L262 TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-29 00:13:59,594 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:13:59,629 INFO L349 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2023-11-29 00:13:59,630 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 19 treesize of output 22 [2023-11-29 00:13:59,690 INFO L349 Elim1Store]: treesize reduction 37, result has 15.9 percent of original size [2023-11-29 00:13:59,690 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 1 case distinctions, treesize of input 24 treesize of output 22 [2023-11-29 00:13:59,764 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:13:59,764 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 00:13:59,764 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 00:13:59,764 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1128480804] [2023-11-29 00:13:59,765 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1128480804] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:13:59,765 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:13:59,765 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-29 00:13:59,765 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [487516904] [2023-11-29 00:13:59,765 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:13:59,766 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 00:13:59,766 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 00:13:59,766 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 00:13:59,767 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 00:13:59,871 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 31 out of 62 [2023-11-29 00:13:59,872 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 59 transitions, 143 flow. Second operand has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 states have internal predecessors, (96), 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) [2023-11-29 00:13:59,872 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 00:13:59,872 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 31 of 62 [2023-11-29 00:13:59,872 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 00:14:00,205 INFO L124 PetriNetUnfolderBase]: 347/773 cut-off events. [2023-11-29 00:14:00,205 INFO L125 PetriNetUnfolderBase]: For 5/5 co-relation queries the response was YES. [2023-11-29 00:14:00,206 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1316 conditions, 773 events. 347/773 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 66. Compared 4536 event pairs, 214 based on Foata normal form. 0/610 useless extension candidates. Maximal degree in co-relation 1292. Up to 519 conditions per place. [2023-11-29 00:14:00,211 INFO L140 encePairwiseOnDemand]: 59/62 looper letters, 29 selfloop transitions, 1 changer transitions 0/57 dead transitions. [2023-11-29 00:14:00,211 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 57 transitions, 199 flow [2023-11-29 00:14:00,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 00:14:00,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-29 00:14:00,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 122 transitions. [2023-11-29 00:14:00,213 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6559139784946236 [2023-11-29 00:14:00,213 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 122 transitions. [2023-11-29 00:14:00,213 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 122 transitions. [2023-11-29 00:14:00,214 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 00:14:00,214 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 122 transitions. [2023-11-29 00:14:00,215 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 40.666666666666664) internal successors, (122), 3 states have internal predecessors, (122), 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) [2023-11-29 00:14:00,216 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 62.0) internal successors, (248), 4 states have internal predecessors, (248), 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) [2023-11-29 00:14:00,216 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 62.0) internal successors, (248), 4 states have internal predecessors, (248), 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) [2023-11-29 00:14:00,216 INFO L175 Difference]: Start difference. First operand has 59 places, 59 transitions, 143 flow. Second operand 3 states and 122 transitions. [2023-11-29 00:14:00,217 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 57 transitions, 199 flow [2023-11-29 00:14:00,218 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 57 transitions, 196 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-29 00:14:00,219 INFO L231 Difference]: Finished difference. Result has 58 places, 57 transitions, 138 flow [2023-11-29 00:14:00,220 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=136, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=138, PETRI_PLACES=58, PETRI_TRANSITIONS=57} [2023-11-29 00:14:00,220 INFO L281 CegarLoopForPetriNet]: 61 programPoint places, -3 predicate places. [2023-11-29 00:14:00,221 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 57 transitions, 138 flow [2023-11-29 00:14:00,221 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 states have internal predecessors, (96), 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) [2023-11-29 00:14:00,221 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 00:14:00,221 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-11-29 00:14:00,224 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5006d8ce-3a1a-4930-a55a-c63476efc892/bin/uautomizer-verify-BQ2R08f2Ya/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 [2023-11-29 00:14:00,421 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5006d8ce-3a1a-4930-a55a-c63476efc892/bin/uautomizer-verify-BQ2R08f2Ya/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 [2023-11-29 00:14:00,422 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 35 more)] === [2023-11-29 00:14:00,422 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:14:00,423 INFO L85 PathProgramCache]: Analyzing trace with hash 943933, now seen corresponding path program 1 times [2023-11-29 00:14:00,423 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 00:14:00,423 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1150855523] [2023-11-29 00:14:00,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:14:00,423 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 [2023-11-29 00:14:00,424 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5006d8ce-3a1a-4930-a55a-c63476efc892/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 00:14:00,424 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5006d8ce-3a1a-4930-a55a-c63476efc892/bin/uautomizer-verify-BQ2R08f2Ya/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) [2023-11-29 00:14:00,425 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5006d8ce-3a1a-4930-a55a-c63476efc892/bin/uautomizer-verify-BQ2R08f2Ya/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 [2023-11-29 00:14:00,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:14:00,512 INFO L262 TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 10 conjunts are in the unsatisfiable core [2023-11-29 00:14:00,514 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:14:00,548 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 00:14:00,549 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 5 [2023-11-29 00:14:00,568 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 00:14:00,572 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 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 5 treesize of output 3 [2023-11-29 00:14:00,606 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 00:14:00,613 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 00:14:00,614 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 5 [2023-11-29 00:14:00,627 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 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 10 treesize of output 8 [2023-11-29 00:14:00,768 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:14:00,768 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 00:14:00,768 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 00:14:00,769 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1150855523] [2023-11-29 00:14:00,769 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1150855523] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:14:00,769 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:14:00,769 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-29 00:14:00,770 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1473099712] [2023-11-29 00:14:00,770 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:14:00,770 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 00:14:00,771 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 00:14:00,771 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 00:14:00,771 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 00:14:00,945 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 33 out of 62 [2023-11-29 00:14:00,945 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 57 transitions, 138 flow. Second operand has 3 states, 3 states have (on average 34.0) internal successors, (102), 3 states have internal predecessors, (102), 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) [2023-11-29 00:14:00,945 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 00:14:00,945 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 33 of 62 [2023-11-29 00:14:00,945 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 00:14:01,276 INFO L124 PetriNetUnfolderBase]: 221/535 cut-off events. [2023-11-29 00:14:01,276 INFO L125 PetriNetUnfolderBase]: For 8/8 co-relation queries the response was YES. [2023-11-29 00:14:01,277 INFO L83 FinitePrefix]: Finished finitePrefix Result has 901 conditions, 535 events. 221/535 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 2993 event pairs, 130 based on Foata normal form. 50/465 useless extension candidates. Maximal degree in co-relation 892. Up to 343 conditions per place. [2023-11-29 00:14:01,282 INFO L140 encePairwiseOnDemand]: 59/62 looper letters, 27 selfloop transitions, 1 changer transitions 0/55 dead transitions. [2023-11-29 00:14:01,282 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 55 transitions, 190 flow [2023-11-29 00:14:01,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 00:14:01,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-29 00:14:01,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 126 transitions. [2023-11-29 00:14:01,285 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6774193548387096 [2023-11-29 00:14:01,285 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 126 transitions. [2023-11-29 00:14:01,285 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 126 transitions. [2023-11-29 00:14:01,285 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 00:14:01,285 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 126 transitions. [2023-11-29 00:14:01,286 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 42.0) internal successors, (126), 3 states have internal predecessors, (126), 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) [2023-11-29 00:14:01,287 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 62.0) internal successors, (248), 4 states have internal predecessors, (248), 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) [2023-11-29 00:14:01,288 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 62.0) internal successors, (248), 4 states have internal predecessors, (248), 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) [2023-11-29 00:14:01,288 INFO L175 Difference]: Start difference. First operand has 58 places, 57 transitions, 138 flow. Second operand 3 states and 126 transitions. [2023-11-29 00:14:01,288 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 55 transitions, 190 flow [2023-11-29 00:14:01,289 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 55 transitions, 189 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-29 00:14:01,291 INFO L231 Difference]: Finished difference. Result has 57 places, 55 transitions, 135 flow [2023-11-29 00:14:01,291 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=133, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=135, PETRI_PLACES=57, PETRI_TRANSITIONS=55} [2023-11-29 00:14:01,292 INFO L281 CegarLoopForPetriNet]: 61 programPoint places, -4 predicate places. [2023-11-29 00:14:01,292 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 55 transitions, 135 flow [2023-11-29 00:14:01,293 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.0) internal successors, (102), 3 states have internal predecessors, (102), 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) [2023-11-29 00:14:01,293 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 00:14:01,293 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1] [2023-11-29 00:14:01,296 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5006d8ce-3a1a-4930-a55a-c63476efc892/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Ended with exit code 0 [2023-11-29 00:14:01,495 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5006d8ce-3a1a-4930-a55a-c63476efc892/bin/uautomizer-verify-BQ2R08f2Ya/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 [2023-11-29 00:14:01,496 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 35 more)] === [2023-11-29 00:14:01,496 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:14:01,496 INFO L85 PathProgramCache]: Analyzing trace with hash 907091915, now seen corresponding path program 1 times [2023-11-29 00:14:01,497 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 00:14:01,497 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1455395778] [2023-11-29 00:14:01,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:14:01,497 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 [2023-11-29 00:14:01,497 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5006d8ce-3a1a-4930-a55a-c63476efc892/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 00:14:01,499 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5006d8ce-3a1a-4930-a55a-c63476efc892/bin/uautomizer-verify-BQ2R08f2Ya/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) [2023-11-29 00:14:01,504 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5006d8ce-3a1a-4930-a55a-c63476efc892/bin/uautomizer-verify-BQ2R08f2Ya/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 [2023-11-29 00:14:01,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:14:01,591 INFO L262 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-29 00:14:01,594 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:14:01,612 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 [2023-11-29 00:14:01,626 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 00:14:01,627 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 [2023-11-29 00:14:01,654 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 00:14:01,655 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 [2023-11-29 00:14:01,669 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 00:14:01,670 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 [2023-11-29 00:14:01,684 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 00:14:01,685 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 [2023-11-29 00:14:01,692 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 00:14:01,693 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 [2023-11-29 00:14:01,896 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:14:01,896 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 00:14:02,409 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:14:02,410 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 00:14:02,410 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1455395778] [2023-11-29 00:14:02,410 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1455395778] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 00:14:02,410 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 00:14:02,410 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 8 [2023-11-29 00:14:02,411 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2087743384] [2023-11-29 00:14:02,411 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 00:14:02,411 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-29 00:14:02,411 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 00:14:02,412 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-29 00:14:02,412 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2023-11-29 00:14:04,248 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 34 out of 62 [2023-11-29 00:14:04,249 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 55 transitions, 135 flow. Second operand has 10 states, 10 states have (on average 35.0) internal successors, (350), 10 states have internal predecessors, (350), 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) [2023-11-29 00:14:04,249 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 00:14:04,249 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 34 of 62 [2023-11-29 00:14:04,249 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 00:14:05,230 INFO L124 PetriNetUnfolderBase]: 224/544 cut-off events. [2023-11-29 00:14:05,230 INFO L125 PetriNetUnfolderBase]: For 8/8 co-relation queries the response was YES. [2023-11-29 00:14:05,232 INFO L83 FinitePrefix]: Finished finitePrefix Result has 930 conditions, 544 events. 224/544 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 3061 event pairs, 130 based on Foata normal form. 0/420 useless extension candidates. Maximal degree in co-relation 920. Up to 346 conditions per place. [2023-11-29 00:14:05,235 INFO L140 encePairwiseOnDemand]: 57/62 looper letters, 25 selfloop transitions, 13 changer transitions 0/64 dead transitions. [2023-11-29 00:14:05,236 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 64 transitions, 247 flow [2023-11-29 00:14:05,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-29 00:14:05,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-11-29 00:14:05,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 381 transitions. [2023-11-29 00:14:05,239 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.614516129032258 [2023-11-29 00:14:05,240 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 381 transitions. [2023-11-29 00:14:05,240 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 381 transitions. [2023-11-29 00:14:05,241 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 00:14:05,241 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 381 transitions. [2023-11-29 00:14:05,243 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 38.1) internal successors, (381), 10 states have internal predecessors, (381), 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) [2023-11-29 00:14:05,247 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 62.0) internal successors, (682), 11 states have internal predecessors, (682), 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) [2023-11-29 00:14:05,248 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 62.0) internal successors, (682), 11 states have internal predecessors, (682), 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) [2023-11-29 00:14:05,248 INFO L175 Difference]: Start difference. First operand has 57 places, 55 transitions, 135 flow. Second operand 10 states and 381 transitions. [2023-11-29 00:14:05,248 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 64 transitions, 247 flow [2023-11-29 00:14:05,250 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 64 transitions, 246 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-29 00:14:05,253 INFO L231 Difference]: Finished difference. Result has 68 places, 64 transitions, 214 flow [2023-11-29 00:14:05,253 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=134, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=214, PETRI_PLACES=68, PETRI_TRANSITIONS=64} [2023-11-29 00:14:05,254 INFO L281 CegarLoopForPetriNet]: 61 programPoint places, 7 predicate places. [2023-11-29 00:14:05,255 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 64 transitions, 214 flow [2023-11-29 00:14:05,255 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 35.0) internal successors, (350), 10 states have internal predecessors, (350), 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) [2023-11-29 00:14:05,256 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 00:14:05,256 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-11-29 00:14:05,259 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5006d8ce-3a1a-4930-a55a-c63476efc892/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Ended with exit code 0 [2023-11-29 00:14:05,459 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5006d8ce-3a1a-4930-a55a-c63476efc892/bin/uautomizer-verify-BQ2R08f2Ya/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 [2023-11-29 00:14:05,459 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 35 more)] === [2023-11-29 00:14:05,460 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:14:05,460 INFO L85 PathProgramCache]: Analyzing trace with hash -1943142700, now seen corresponding path program 1 times [2023-11-29 00:14:05,460 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 00:14:05,461 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [832221175] [2023-11-29 00:14:05,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:14:05,461 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 [2023-11-29 00:14:05,461 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5006d8ce-3a1a-4930-a55a-c63476efc892/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 00:14:05,462 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5006d8ce-3a1a-4930-a55a-c63476efc892/bin/uautomizer-verify-BQ2R08f2Ya/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) [2023-11-29 00:14:05,464 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5006d8ce-3a1a-4930-a55a-c63476efc892/bin/uautomizer-verify-BQ2R08f2Ya/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 [2023-11-29 00:14:05,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:14:05,552 INFO L262 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-29 00:14:05,554 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:14:05,576 INFO L349 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2023-11-29 00:14:05,576 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 1 case distinctions, treesize of input 9 treesize of output 15 [2023-11-29 00:14:05,600 INFO L349 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2023-11-29 00:14:05,601 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 1 case distinctions, treesize of input 9 treesize of output 15 [2023-11-29 00:14:05,632 INFO L349 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2023-11-29 00:14:05,633 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 1 case distinctions, treesize of input 14 treesize of output 15 [2023-11-29 00:14:05,722 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:14:05,722 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 00:14:05,722 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 00:14:05,722 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [832221175] [2023-11-29 00:14:05,722 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [832221175] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:14:05,722 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:14:05,723 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-29 00:14:05,723 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1344124800] [2023-11-29 00:14:05,723 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:14:05,723 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 00:14:05,723 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 00:14:05,724 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 00:14:05,724 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 00:14:05,805 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 31 out of 62 [2023-11-29 00:14:05,805 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 64 transitions, 214 flow. Second operand has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 3 states have internal predecessors, (98), 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) [2023-11-29 00:14:05,805 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 00:14:05,806 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 31 of 62 [2023-11-29 00:14:05,806 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 00:14:06,094 INFO L124 PetriNetUnfolderBase]: 242/578 cut-off events. [2023-11-29 00:14:06,094 INFO L125 PetriNetUnfolderBase]: For 16/16 co-relation queries the response was YES. [2023-11-29 00:14:06,096 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1020 conditions, 578 events. 242/578 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 3252 event pairs, 142 based on Foata normal form. 0/460 useless extension candidates. Maximal degree in co-relation 1006. Up to 384 conditions per place. [2023-11-29 00:14:06,099 INFO L140 encePairwiseOnDemand]: 59/62 looper letters, 38 selfloop transitions, 1 changer transitions 0/62 dead transitions. [2023-11-29 00:14:06,099 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 62 transitions, 288 flow [2023-11-29 00:14:06,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 00:14:06,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-29 00:14:06,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 122 transitions. [2023-11-29 00:14:06,101 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6559139784946236 [2023-11-29 00:14:06,101 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 122 transitions. [2023-11-29 00:14:06,101 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 122 transitions. [2023-11-29 00:14:06,101 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 00:14:06,101 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 122 transitions. [2023-11-29 00:14:06,102 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 40.666666666666664) internal successors, (122), 3 states have internal predecessors, (122), 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) [2023-11-29 00:14:06,103 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 62.0) internal successors, (248), 4 states have internal predecessors, (248), 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) [2023-11-29 00:14:06,103 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 62.0) internal successors, (248), 4 states have internal predecessors, (248), 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) [2023-11-29 00:14:06,103 INFO L175 Difference]: Start difference. First operand has 68 places, 64 transitions, 214 flow. Second operand 3 states and 122 transitions. [2023-11-29 00:14:06,103 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 62 transitions, 288 flow [2023-11-29 00:14:06,106 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 62 transitions, 258 flow, removed 11 selfloop flow, removed 3 redundant places. [2023-11-29 00:14:06,108 INFO L231 Difference]: Finished difference. Result has 65 places, 62 transitions, 182 flow [2023-11-29 00:14:06,108 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=180, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=182, PETRI_PLACES=65, PETRI_TRANSITIONS=62} [2023-11-29 00:14:06,109 INFO L281 CegarLoopForPetriNet]: 61 programPoint places, 4 predicate places. [2023-11-29 00:14:06,109 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 62 transitions, 182 flow [2023-11-29 00:14:06,110 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 3 states have internal predecessors, (98), 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) [2023-11-29 00:14:06,110 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 00:14:06,110 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-11-29 00:14:06,113 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5006d8ce-3a1a-4930-a55a-c63476efc892/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Ended with exit code 0 [2023-11-29 00:14:06,311 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5006d8ce-3a1a-4930-a55a-c63476efc892/bin/uautomizer-verify-BQ2R08f2Ya/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 [2023-11-29 00:14:06,311 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 35 more)] === [2023-11-29 00:14:06,311 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:14:06,312 INFO L85 PathProgramCache]: Analyzing trace with hash -1943142699, now seen corresponding path program 1 times [2023-11-29 00:14:06,312 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 00:14:06,312 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [998870408] [2023-11-29 00:14:06,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:14:06,313 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 [2023-11-29 00:14:06,313 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5006d8ce-3a1a-4930-a55a-c63476efc892/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 00:14:06,314 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5006d8ce-3a1a-4930-a55a-c63476efc892/bin/uautomizer-verify-BQ2R08f2Ya/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) [2023-11-29 00:14:06,315 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5006d8ce-3a1a-4930-a55a-c63476efc892/bin/uautomizer-verify-BQ2R08f2Ya/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 [2023-11-29 00:14:06,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:14:06,398 INFO L262 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-29 00:14:06,400 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:14:06,417 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 00:14:06,418 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 [2023-11-29 00:14:06,436 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 00:14:06,445 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 00:14:06,448 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 [2023-11-29 00:14:06,455 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 00:14:06,458 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 00:14:06,461 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 [2023-11-29 00:14:06,495 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:14:06,495 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 00:14:06,496 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 00:14:06,496 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [998870408] [2023-11-29 00:14:06,496 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [998870408] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:14:06,496 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:14:06,496 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-29 00:14:06,496 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [989483958] [2023-11-29 00:14:06,496 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:14:06,497 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 00:14:06,497 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 00:14:06,497 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 00:14:06,497 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 00:14:06,627 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 33 out of 62 [2023-11-29 00:14:06,627 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 62 transitions, 182 flow. Second operand has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 3 states have internal predecessors, (104), 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) [2023-11-29 00:14:06,627 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 00:14:06,627 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 33 of 62 [2023-11-29 00:14:06,627 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 00:14:06,882 INFO L124 PetriNetUnfolderBase]: 224/532 cut-off events. [2023-11-29 00:14:06,882 INFO L125 PetriNetUnfolderBase]: For 14/14 co-relation queries the response was YES. [2023-11-29 00:14:06,883 INFO L83 FinitePrefix]: Finished finitePrefix Result has 928 conditions, 532 events. 224/532 cut-off events. For 14/14 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 2935 event pairs, 130 based on Foata normal form. 12/436 useless extension candidates. Maximal degree in co-relation 914. Up to 352 conditions per place. [2023-11-29 00:14:06,888 INFO L140 encePairwiseOnDemand]: 59/62 looper letters, 36 selfloop transitions, 1 changer transitions 0/60 dead transitions. [2023-11-29 00:14:06,888 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 60 transitions, 252 flow [2023-11-29 00:14:06,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 00:14:06,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-29 00:14:06,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 126 transitions. [2023-11-29 00:14:06,890 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6774193548387096 [2023-11-29 00:14:06,890 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 126 transitions. [2023-11-29 00:14:06,890 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 126 transitions. [2023-11-29 00:14:06,890 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 00:14:06,890 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 126 transitions. [2023-11-29 00:14:06,891 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 42.0) internal successors, (126), 3 states have internal predecessors, (126), 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) [2023-11-29 00:14:06,892 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 62.0) internal successors, (248), 4 states have internal predecessors, (248), 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) [2023-11-29 00:14:06,892 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 62.0) internal successors, (248), 4 states have internal predecessors, (248), 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) [2023-11-29 00:14:06,892 INFO L175 Difference]: Start difference. First operand has 65 places, 62 transitions, 182 flow. Second operand 3 states and 126 transitions. [2023-11-29 00:14:06,892 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 60 transitions, 252 flow [2023-11-29 00:14:06,894 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 60 transitions, 251 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-29 00:14:06,896 INFO L231 Difference]: Finished difference. Result has 64 places, 60 transitions, 179 flow [2023-11-29 00:14:06,896 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=177, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=179, PETRI_PLACES=64, PETRI_TRANSITIONS=60} [2023-11-29 00:14:06,897 INFO L281 CegarLoopForPetriNet]: 61 programPoint places, 3 predicate places. [2023-11-29 00:14:06,897 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 60 transitions, 179 flow [2023-11-29 00:14:06,898 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 3 states have internal predecessors, (104), 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) [2023-11-29 00:14:06,898 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 00:14:06,898 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:14:06,901 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5006d8ce-3a1a-4930-a55a-c63476efc892/bin/uautomizer-verify-BQ2R08f2Ya/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 [2023-11-29 00:14:07,098 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5006d8ce-3a1a-4930-a55a-c63476efc892/bin/uautomizer-verify-BQ2R08f2Ya/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 [2023-11-29 00:14:07,099 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 35 more)] === [2023-11-29 00:14:07,099 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:14:07,099 INFO L85 PathProgramCache]: Analyzing trace with hash -107878180, now seen corresponding path program 1 times [2023-11-29 00:14:07,100 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 00:14:07,100 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [714793974] [2023-11-29 00:14:07,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:14:07,100 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 [2023-11-29 00:14:07,100 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5006d8ce-3a1a-4930-a55a-c63476efc892/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 00:14:07,101 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5006d8ce-3a1a-4930-a55a-c63476efc892/bin/uautomizer-verify-BQ2R08f2Ya/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) [2023-11-29 00:14:07,102 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5006d8ce-3a1a-4930-a55a-c63476efc892/bin/uautomizer-verify-BQ2R08f2Ya/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 [2023-11-29 00:14:07,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:14:07,184 INFO L262 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-29 00:14:07,186 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:14:07,195 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 7 [2023-11-29 00:14:07,214 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 00:14:07,214 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 [2023-11-29 00:14:07,223 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 00:14:07,224 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 [2023-11-29 00:14:07,229 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 00:14:07,230 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 [2023-11-29 00:14:07,239 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 00:14:07,240 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 [2023-11-29 00:14:07,245 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 00:14:07,246 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 6 treesize of output 1 [2023-11-29 00:14:07,272 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:14:07,272 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 00:14:07,273 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 00:14:07,273 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [714793974] [2023-11-29 00:14:07,273 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [714793974] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:14:07,273 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:14:07,273 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 00:14:07,273 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2076339032] [2023-11-29 00:14:07,273 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:14:07,274 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 00:14:07,274 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 00:14:07,275 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 00:14:07,275 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 00:14:07,486 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 28 out of 62 [2023-11-29 00:14:07,486 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 60 transitions, 179 flow. Second operand has 4 states, 4 states have (on average 29.0) internal successors, (116), 4 states have internal predecessors, (116), 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) [2023-11-29 00:14:07,486 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 00:14:07,486 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 28 of 62 [2023-11-29 00:14:07,487 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 00:14:07,786 INFO L124 PetriNetUnfolderBase]: 224/469 cut-off events. [2023-11-29 00:14:07,786 INFO L125 PetriNetUnfolderBase]: For 14/14 co-relation queries the response was YES. [2023-11-29 00:14:07,787 INFO L83 FinitePrefix]: Finished finitePrefix Result has 866 conditions, 469 events. 224/469 cut-off events. For 14/14 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 2257 event pairs, 130 based on Foata normal form. 0/424 useless extension candidates. Maximal degree in co-relation 851. Up to 341 conditions per place. [2023-11-29 00:14:07,790 INFO L140 encePairwiseOnDemand]: 54/62 looper letters, 31 selfloop transitions, 6 changer transitions 0/54 dead transitions. [2023-11-29 00:14:07,790 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 54 transitions, 241 flow [2023-11-29 00:14:07,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 00:14:07,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-29 00:14:07,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 143 transitions. [2023-11-29 00:14:07,792 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5766129032258065 [2023-11-29 00:14:07,792 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 143 transitions. [2023-11-29 00:14:07,792 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 143 transitions. [2023-11-29 00:14:07,792 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 00:14:07,792 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 143 transitions. [2023-11-29 00:14:07,793 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 35.75) internal successors, (143), 4 states have internal predecessors, (143), 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) [2023-11-29 00:14:07,794 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 62.0) internal successors, (310), 5 states have internal predecessors, (310), 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) [2023-11-29 00:14:07,794 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 62.0) internal successors, (310), 5 states have internal predecessors, (310), 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) [2023-11-29 00:14:07,794 INFO L175 Difference]: Start difference. First operand has 64 places, 60 transitions, 179 flow. Second operand 4 states and 143 transitions. [2023-11-29 00:14:07,794 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 54 transitions, 241 flow [2023-11-29 00:14:07,796 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 54 transitions, 240 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-29 00:14:07,797 INFO L231 Difference]: Finished difference. Result has 60 places, 54 transitions, 178 flow [2023-11-29 00:14:07,797 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=166, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=178, PETRI_PLACES=60, PETRI_TRANSITIONS=54} [2023-11-29 00:14:07,798 INFO L281 CegarLoopForPetriNet]: 61 programPoint places, -1 predicate places. [2023-11-29 00:14:07,798 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 54 transitions, 178 flow [2023-11-29 00:14:07,799 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 29.0) internal successors, (116), 4 states have internal predecessors, (116), 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) [2023-11-29 00:14:07,799 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 00:14:07,799 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:14:07,802 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5006d8ce-3a1a-4930-a55a-c63476efc892/bin/uautomizer-verify-BQ2R08f2Ya/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)] Ended with exit code 0 [2023-11-29 00:14:07,999 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5006d8ce-3a1a-4930-a55a-c63476efc892/bin/uautomizer-verify-BQ2R08f2Ya/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 [2023-11-29 00:14:08,000 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 35 more)] === [2023-11-29 00:14:08,000 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:14:08,000 INFO L85 PathProgramCache]: Analyzing trace with hash -107878179, now seen corresponding path program 1 times [2023-11-29 00:14:08,000 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 00:14:08,000 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1999580478] [2023-11-29 00:14:08,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:14:08,001 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 [2023-11-29 00:14:08,001 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5006d8ce-3a1a-4930-a55a-c63476efc892/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 00:14:08,002 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5006d8ce-3a1a-4930-a55a-c63476efc892/bin/uautomizer-verify-BQ2R08f2Ya/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) [2023-11-29 00:14:08,003 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5006d8ce-3a1a-4930-a55a-c63476efc892/bin/uautomizer-verify-BQ2R08f2Ya/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 [2023-11-29 00:14:08,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:14:08,087 INFO L262 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 13 conjunts are in the unsatisfiable core [2023-11-29 00:14:08,089 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:14:08,109 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 [2023-11-29 00:14:08,135 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 00:14:08,136 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 [2023-11-29 00:14:08,145 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 00:14:08,146 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 [2023-11-29 00:14:08,157 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 00:14:08,158 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 [2023-11-29 00:14:08,167 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 00:14:08,168 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 [2023-11-29 00:14:08,181 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 00:14:08,182 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 [2023-11-29 00:14:08,361 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:14:08,361 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 00:14:08,361 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 00:14:08,361 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1999580478] [2023-11-29 00:14:08,361 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1999580478] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:14:08,362 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:14:08,362 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 00:14:08,362 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2009129071] [2023-11-29 00:14:08,362 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:14:08,362 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 00:14:08,362 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 00:14:08,363 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 00:14:08,363 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-29 00:14:08,763 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 31 out of 62 [2023-11-29 00:14:08,764 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 54 transitions, 178 flow. Second operand has 5 states, 5 states have (on average 32.0) internal successors, (160), 5 states have internal predecessors, (160), 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) [2023-11-29 00:14:08,764 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 00:14:08,764 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 31 of 62 [2023-11-29 00:14:08,764 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 00:14:09,517 INFO L124 PetriNetUnfolderBase]: 505/909 cut-off events. [2023-11-29 00:14:09,517 INFO L125 PetriNetUnfolderBase]: For 16/16 co-relation queries the response was YES. [2023-11-29 00:14:09,519 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1783 conditions, 909 events. 505/909 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 4453 event pairs, 48 based on Foata normal form. 0/767 useless extension candidates. Maximal degree in co-relation 1767. Up to 481 conditions per place. [2023-11-29 00:14:09,524 INFO L140 encePairwiseOnDemand]: 53/62 looper letters, 62 selfloop transitions, 9 changer transitions 0/84 dead transitions. [2023-11-29 00:14:09,524 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 84 transitions, 386 flow [2023-11-29 00:14:09,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 00:14:09,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-29 00:14:09,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 218 transitions. [2023-11-29 00:14:09,526 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7032258064516129 [2023-11-29 00:14:09,526 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 218 transitions. [2023-11-29 00:14:09,526 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 218 transitions. [2023-11-29 00:14:09,526 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 00:14:09,526 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 218 transitions. [2023-11-29 00:14:09,527 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 43.6) internal successors, (218), 5 states have internal predecessors, (218), 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) [2023-11-29 00:14:09,528 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 62.0) internal successors, (372), 6 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) [2023-11-29 00:14:09,528 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 62.0) internal successors, (372), 6 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) [2023-11-29 00:14:09,528 INFO L175 Difference]: Start difference. First operand has 60 places, 54 transitions, 178 flow. Second operand 5 states and 218 transitions. [2023-11-29 00:14:09,528 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 84 transitions, 386 flow [2023-11-29 00:14:09,530 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 84 transitions, 379 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-29 00:14:09,532 INFO L231 Difference]: Finished difference. Result has 64 places, 57 transitions, 219 flow [2023-11-29 00:14:09,532 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=171, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=219, PETRI_PLACES=64, PETRI_TRANSITIONS=57} [2023-11-29 00:14:09,533 INFO L281 CegarLoopForPetriNet]: 61 programPoint places, 3 predicate places. [2023-11-29 00:14:09,533 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 57 transitions, 219 flow [2023-11-29 00:14:09,534 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 32.0) internal successors, (160), 5 states have internal predecessors, (160), 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) [2023-11-29 00:14:09,534 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 00:14:09,534 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:14:09,537 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5006d8ce-3a1a-4930-a55a-c63476efc892/bin/uautomizer-verify-BQ2R08f2Ya/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)] Ended with exit code 0 [2023-11-29 00:14:09,734 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5006d8ce-3a1a-4930-a55a-c63476efc892/bin/uautomizer-verify-BQ2R08f2Ya/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 [2023-11-29 00:14:09,735 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thread2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 35 more)] === [2023-11-29 00:14:09,735 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:14:09,735 INFO L85 PathProgramCache]: Analyzing trace with hash -1234483738, now seen corresponding path program 1 times [2023-11-29 00:14:09,735 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 00:14:09,736 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [546502120] [2023-11-29 00:14:09,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:14:09,736 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 [2023-11-29 00:14:09,736 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5006d8ce-3a1a-4930-a55a-c63476efc892/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 00:14:09,737 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5006d8ce-3a1a-4930-a55a-c63476efc892/bin/uautomizer-verify-BQ2R08f2Ya/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) [2023-11-29 00:14:09,738 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5006d8ce-3a1a-4930-a55a-c63476efc892/bin/uautomizer-verify-BQ2R08f2Ya/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 [2023-11-29 00:14:09,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:14:09,825 INFO L262 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 13 conjunts are in the unsatisfiable core [2023-11-29 00:14:09,827 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:14:09,845 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 [2023-11-29 00:14:09,857 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 00:14:09,858 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 [2023-11-29 00:14:09,876 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 00:14:09,877 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 [2023-11-29 00:14:09,888 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 00:14:09,888 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 [2023-11-29 00:14:09,901 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 00:14:09,902 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 [2023-11-29 00:14:09,924 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 00:14:09,925 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 [2023-11-29 00:14:10,169 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:14:10,169 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 00:14:10,169 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 00:14:10,169 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [546502120] [2023-11-29 00:14:10,170 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [546502120] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:14:10,170 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:14:10,170 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 00:14:10,170 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [569317694] [2023-11-29 00:14:10,170 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:14:10,170 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 00:14:10,171 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 00:14:10,171 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 00:14:10,171 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-29 00:14:10,574 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 31 out of 62 [2023-11-29 00:14:10,574 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 57 transitions, 219 flow. Second operand has 5 states, 5 states have (on average 32.4) internal successors, (162), 5 states have internal predecessors, (162), 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) [2023-11-29 00:14:10,574 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 00:14:10,574 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 31 of 62 [2023-11-29 00:14:10,574 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 00:14:11,326 INFO L124 PetriNetUnfolderBase]: 779/1362 cut-off events. [2023-11-29 00:14:11,326 INFO L125 PetriNetUnfolderBase]: For 147/163 co-relation queries the response was YES. [2023-11-29 00:14:11,329 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2972 conditions, 1362 events. 779/1362 cut-off events. For 147/163 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 6469 event pairs, 107 based on Foata normal form. 26/1164 useless extension candidates. Maximal degree in co-relation 2954. Up to 753 conditions per place. [2023-11-29 00:14:11,336 INFO L140 encePairwiseOnDemand]: 53/62 looper letters, 63 selfloop transitions, 9 changer transitions 0/86 dead transitions. [2023-11-29 00:14:11,336 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 86 transitions, 437 flow [2023-11-29 00:14:11,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 00:14:11,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-29 00:14:11,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 216 transitions. [2023-11-29 00:14:11,338 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6967741935483871 [2023-11-29 00:14:11,338 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 216 transitions. [2023-11-29 00:14:11,338 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 216 transitions. [2023-11-29 00:14:11,339 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 00:14:11,339 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 216 transitions. [2023-11-29 00:14:11,340 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 43.2) internal successors, (216), 5 states have internal predecessors, (216), 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) [2023-11-29 00:14:11,340 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 62.0) internal successors, (372), 6 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) [2023-11-29 00:14:11,341 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 62.0) internal successors, (372), 6 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) [2023-11-29 00:14:11,341 INFO L175 Difference]: Start difference. First operand has 64 places, 57 transitions, 219 flow. Second operand 5 states and 216 transitions. [2023-11-29 00:14:11,341 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 86 transitions, 437 flow [2023-11-29 00:14:11,342 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 86 transitions, 428 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-29 00:14:11,344 INFO L231 Difference]: Finished difference. Result has 68 places, 60 transitions, 259 flow [2023-11-29 00:14:11,344 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=211, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=259, PETRI_PLACES=68, PETRI_TRANSITIONS=60} [2023-11-29 00:14:11,345 INFO L281 CegarLoopForPetriNet]: 61 programPoint places, 7 predicate places. [2023-11-29 00:14:11,345 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 60 transitions, 259 flow [2023-11-29 00:14:11,345 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 32.4) internal successors, (162), 5 states have internal predecessors, (162), 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) [2023-11-29 00:14:11,345 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 00:14:11,345 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 4, 1, 1] [2023-11-29 00:14:11,347 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5006d8ce-3a1a-4930-a55a-c63476efc892/bin/uautomizer-verify-BQ2R08f2Ya/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)] Ended with exit code 0 [2023-11-29 00:14:11,545 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5006d8ce-3a1a-4930-a55a-c63476efc892/bin/uautomizer-verify-BQ2R08f2Ya/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 [2023-11-29 00:14:11,546 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 35 more)] === [2023-11-29 00:14:11,546 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:14:11,546 INFO L85 PathProgramCache]: Analyzing trace with hash -334394583, now seen corresponding path program 2 times [2023-11-29 00:14:11,546 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 00:14:11,547 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [73263173] [2023-11-29 00:14:11,547 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 00:14:11,547 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 [2023-11-29 00:14:11,547 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5006d8ce-3a1a-4930-a55a-c63476efc892/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 00:14:11,548 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5006d8ce-3a1a-4930-a55a-c63476efc892/bin/uautomizer-verify-BQ2R08f2Ya/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) [2023-11-29 00:14:11,549 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5006d8ce-3a1a-4930-a55a-c63476efc892/bin/uautomizer-verify-BQ2R08f2Ya/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 (12)] Waiting until timeout for monitored process [2023-11-29 00:14:11,639 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-29 00:14:11,639 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 00:14:11,643 INFO L262 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-29 00:14:11,645 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:14:11,663 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 [2023-11-29 00:14:11,690 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 00:14:11,691 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 [2023-11-29 00:14:11,701 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 00:14:11,701 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 [2023-11-29 00:14:11,708 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 00:14:11,709 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 [2023-11-29 00:14:11,720 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 00:14:11,721 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 [2023-11-29 00:14:11,727 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 00:14:11,727 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 [2023-11-29 00:14:12,081 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:14:12,081 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 00:14:13,147 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:14:13,148 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 00:14:13,148 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [73263173] [2023-11-29 00:14:13,148 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [73263173] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 00:14:13,148 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 00:14:13,148 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 12 [2023-11-29 00:14:13,148 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1811036164] [2023-11-29 00:14:13,149 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 00:14:13,149 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-11-29 00:14:13,149 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 00:14:13,150 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-11-29 00:14:13,150 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=129, Unknown=0, NotChecked=0, Total=182 [2023-11-29 00:14:16,082 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 34 out of 62 [2023-11-29 00:14:16,083 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 60 transitions, 259 flow. Second operand has 14 states, 14 states have (on average 35.57142857142857) internal successors, (498), 14 states have internal predecessors, (498), 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) [2023-11-29 00:14:16,083 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 00:14:16,083 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 34 of 62 [2023-11-29 00:14:16,083 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 00:14:20,728 INFO L124 PetriNetUnfolderBase]: 595/1192 cut-off events. [2023-11-29 00:14:20,728 INFO L125 PetriNetUnfolderBase]: For 313/321 co-relation queries the response was YES. [2023-11-29 00:14:20,732 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2796 conditions, 1192 events. 595/1192 cut-off events. For 313/321 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 6458 event pairs, 386 based on Foata normal form. 6/1066 useless extension candidates. Maximal degree in co-relation 2776. Up to 968 conditions per place. [2023-11-29 00:14:20,740 INFO L140 encePairwiseOnDemand]: 57/62 looper letters, 29 selfloop transitions, 31 changer transitions 0/78 dead transitions. [2023-11-29 00:14:20,740 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 78 transitions, 499 flow [2023-11-29 00:14:20,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-11-29 00:14:20,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2023-11-29 00:14:20,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 810 transitions. [2023-11-29 00:14:20,745 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.593841642228739 [2023-11-29 00:14:20,745 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 810 transitions. [2023-11-29 00:14:20,745 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 810 transitions. [2023-11-29 00:14:20,746 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 00:14:20,746 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 810 transitions. [2023-11-29 00:14:20,748 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 36.81818181818182) internal successors, (810), 22 states have internal predecessors, (810), 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) [2023-11-29 00:14:20,751 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 62.0) internal successors, (1426), 23 states have internal predecessors, (1426), 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) [2023-11-29 00:14:20,752 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 62.0) internal successors, (1426), 23 states have internal predecessors, (1426), 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) [2023-11-29 00:14:20,752 INFO L175 Difference]: Start difference. First operand has 68 places, 60 transitions, 259 flow. Second operand 22 states and 810 transitions. [2023-11-29 00:14:20,752 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 78 transitions, 499 flow [2023-11-29 00:14:20,755 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 78 transitions, 485 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-29 00:14:20,757 INFO L231 Difference]: Finished difference. Result has 93 places, 78 transitions, 457 flow [2023-11-29 00:14:20,757 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=251, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=457, PETRI_PLACES=93, PETRI_TRANSITIONS=78} [2023-11-29 00:14:20,758 INFO L281 CegarLoopForPetriNet]: 61 programPoint places, 32 predicate places. [2023-11-29 00:14:20,758 INFO L495 AbstractCegarLoop]: Abstraction has has 93 places, 78 transitions, 457 flow [2023-11-29 00:14:20,759 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 35.57142857142857) internal successors, (498), 14 states have internal predecessors, (498), 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) [2023-11-29 00:14:20,759 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 00:14:20,759 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:14:20,762 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5006d8ce-3a1a-4930-a55a-c63476efc892/bin/uautomizer-verify-BQ2R08f2Ya/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 (12)] Ended with exit code 0 [2023-11-29 00:14:20,959 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5006d8ce-3a1a-4930-a55a-c63476efc892/bin/uautomizer-verify-BQ2R08f2Ya/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 [2023-11-29 00:14:20,959 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 35 more)] === [2023-11-29 00:14:20,960 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:14:20,960 INFO L85 PathProgramCache]: Analyzing trace with hash -287407030, now seen corresponding path program 1 times [2023-11-29 00:14:20,960 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 00:14:20,960 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1937766935] [2023-11-29 00:14:20,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:14:20,960 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 [2023-11-29 00:14:20,961 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5006d8ce-3a1a-4930-a55a-c63476efc892/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 00:14:20,962 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5006d8ce-3a1a-4930-a55a-c63476efc892/bin/uautomizer-verify-BQ2R08f2Ya/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) [2023-11-29 00:14:20,963 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5006d8ce-3a1a-4930-a55a-c63476efc892/bin/uautomizer-verify-BQ2R08f2Ya/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 (13)] Waiting until timeout for monitored process [2023-11-29 00:14:21,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:14:21,075 INFO L262 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 14 conjunts are in the unsatisfiable core [2023-11-29 00:14:21,077 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:14:21,092 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 [2023-11-29 00:14:21,118 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 00:14:21,119 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 [2023-11-29 00:14:21,127 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 00:14:21,127 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 [2023-11-29 00:14:21,138 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 00:14:21,138 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 [2023-11-29 00:14:21,150 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 00:14:21,151 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 [2023-11-29 00:14:21,157 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 00:14:21,157 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 [2023-11-29 00:14:21,384 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:14:21,384 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 00:14:21,384 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 00:14:21,384 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1937766935] [2023-11-29 00:14:21,384 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1937766935] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:14:21,384 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:14:21,385 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 00:14:21,385 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2057931659] [2023-11-29 00:14:21,385 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:14:21,385 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 00:14:21,385 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 00:14:21,386 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 00:14:21,386 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 00:14:21,688 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 35 out of 62 [2023-11-29 00:14:21,689 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 78 transitions, 457 flow. Second operand has 4 states, 4 states have (on average 36.75) internal successors, (147), 4 states have internal predecessors, (147), 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) [2023-11-29 00:14:21,689 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 00:14:21,689 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 35 of 62 [2023-11-29 00:14:21,689 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 00:14:22,205 INFO L124 PetriNetUnfolderBase]: 608/1257 cut-off events. [2023-11-29 00:14:22,205 INFO L125 PetriNetUnfolderBase]: For 344/352 co-relation queries the response was YES. [2023-11-29 00:14:22,211 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2945 conditions, 1257 events. 608/1257 cut-off events. For 344/352 co-relation queries the response was YES. Maximal size of possible extension queue 66. Compared 6879 event pairs, 424 based on Foata normal form. 10/1146 useless extension candidates. Maximal degree in co-relation 2919. Up to 1001 conditions per place. [2023-11-29 00:14:22,219 INFO L140 encePairwiseOnDemand]: 57/62 looper letters, 65 selfloop transitions, 3 changer transitions 0/87 dead transitions. [2023-11-29 00:14:22,219 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 87 transitions, 619 flow [2023-11-29 00:14:22,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 00:14:22,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-29 00:14:22,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 179 transitions. [2023-11-29 00:14:22,221 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7217741935483871 [2023-11-29 00:14:22,221 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 179 transitions. [2023-11-29 00:14:22,221 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 179 transitions. [2023-11-29 00:14:22,221 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 00:14:22,221 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 179 transitions. [2023-11-29 00:14:22,222 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 44.75) internal successors, (179), 4 states have internal predecessors, (179), 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) [2023-11-29 00:14:22,223 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 62.0) internal successors, (310), 5 states have internal predecessors, (310), 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) [2023-11-29 00:14:22,223 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 62.0) internal successors, (310), 5 states have internal predecessors, (310), 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) [2023-11-29 00:14:22,223 INFO L175 Difference]: Start difference. First operand has 93 places, 78 transitions, 457 flow. Second operand 4 states and 179 transitions. [2023-11-29 00:14:22,224 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 87 transitions, 619 flow [2023-11-29 00:14:22,228 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 87 transitions, 539 flow, removed 27 selfloop flow, removed 9 redundant places. [2023-11-29 00:14:22,230 INFO L231 Difference]: Finished difference. Result has 88 places, 78 transitions, 392 flow [2023-11-29 00:14:22,230 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=377, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=392, PETRI_PLACES=88, PETRI_TRANSITIONS=78} [2023-11-29 00:14:22,230 INFO L281 CegarLoopForPetriNet]: 61 programPoint places, 27 predicate places. [2023-11-29 00:14:22,231 INFO L495 AbstractCegarLoop]: Abstraction has has 88 places, 78 transitions, 392 flow [2023-11-29 00:14:22,231 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 36.75) internal successors, (147), 4 states have internal predecessors, (147), 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) [2023-11-29 00:14:22,231 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 00:14:22,231 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:14:22,235 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5006d8ce-3a1a-4930-a55a-c63476efc892/bin/uautomizer-verify-BQ2R08f2Ya/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 (13)] Ended with exit code 0 [2023-11-29 00:14:22,433 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5006d8ce-3a1a-4930-a55a-c63476efc892/bin/uautomizer-verify-BQ2R08f2Ya/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 [2023-11-29 00:14:22,433 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 35 more)] === [2023-11-29 00:14:22,433 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:14:22,434 INFO L85 PathProgramCache]: Analyzing trace with hash -430043456, now seen corresponding path program 1 times [2023-11-29 00:14:22,434 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 00:14:22,434 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [31203994] [2023-11-29 00:14:22,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:14:22,434 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 [2023-11-29 00:14:22,434 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5006d8ce-3a1a-4930-a55a-c63476efc892/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 00:14:22,435 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5006d8ce-3a1a-4930-a55a-c63476efc892/bin/uautomizer-verify-BQ2R08f2Ya/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) [2023-11-29 00:14:22,436 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5006d8ce-3a1a-4930-a55a-c63476efc892/bin/uautomizer-verify-BQ2R08f2Ya/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 (14)] Waiting until timeout for monitored process [2023-11-29 00:14:22,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:14:22,542 INFO L262 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 15 conjunts are in the unsatisfiable core [2023-11-29 00:14:22,545 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:14:22,560 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 [2023-11-29 00:14:22,579 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 00:14:22,580 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 [2023-11-29 00:14:22,587 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 00:14:22,588 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 [2023-11-29 00:14:22,597 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 00:14:22,598 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 [2023-11-29 00:14:22,607 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 00:14:22,607 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 [2023-11-29 00:14:22,612 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 00:14:22,613 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 [2023-11-29 00:14:22,904 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 00:14:22,904 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 00:14:23,728 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 00:14:23,728 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 00:14:23,728 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [31203994] [2023-11-29 00:14:23,728 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [31203994] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 00:14:23,728 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 00:14:23,728 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2023-11-29 00:14:23,728 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1678159960] [2023-11-29 00:14:23,728 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 00:14:23,729 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-29 00:14:23,729 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 00:14:23,729 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-29 00:14:23,730 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2023-11-29 00:14:26,136 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 31 out of 62 [2023-11-29 00:14:26,137 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 78 transitions, 392 flow. Second operand has 12 states, 12 states have (on average 33.0) internal successors, (396), 12 states have internal predecessors, (396), 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) [2023-11-29 00:14:26,137 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 00:14:26,137 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 31 of 62 [2023-11-29 00:14:26,137 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 00:14:29,641 INFO L124 PetriNetUnfolderBase]: 1492/2649 cut-off events. [2023-11-29 00:14:29,641 INFO L125 PetriNetUnfolderBase]: For 891/928 co-relation queries the response was YES. [2023-11-29 00:14:29,649 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6549 conditions, 2649 events. 1492/2649 cut-off events. For 891/928 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 13328 event pairs, 90 based on Foata normal form. 257/2651 useless extension candidates. Maximal degree in co-relation 6522. Up to 422 conditions per place. [2023-11-29 00:14:29,664 INFO L140 encePairwiseOnDemand]: 52/62 looper letters, 190 selfloop transitions, 27 changer transitions 0/231 dead transitions. [2023-11-29 00:14:29,664 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 231 transitions, 1293 flow [2023-11-29 00:14:29,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-29 00:14:29,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2023-11-29 00:14:29,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 649 transitions. [2023-11-29 00:14:29,669 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6978494623655914 [2023-11-29 00:14:29,670 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 649 transitions. [2023-11-29 00:14:29,670 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 649 transitions. [2023-11-29 00:14:29,670 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 00:14:29,670 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 649 transitions. [2023-11-29 00:14:29,672 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 43.266666666666666) internal successors, (649), 15 states have internal predecessors, (649), 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) [2023-11-29 00:14:29,675 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 62.0) internal successors, (992), 16 states have internal predecessors, (992), 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) [2023-11-29 00:14:29,675 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 62.0) internal successors, (992), 16 states have internal predecessors, (992), 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) [2023-11-29 00:14:29,676 INFO L175 Difference]: Start difference. First operand has 88 places, 78 transitions, 392 flow. Second operand 15 states and 649 transitions. [2023-11-29 00:14:29,676 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 231 transitions, 1293 flow [2023-11-29 00:14:29,682 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 231 transitions, 1288 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-29 00:14:29,687 INFO L231 Difference]: Finished difference. Result has 102 places, 88 transitions, 512 flow [2023-11-29 00:14:29,687 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=379, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=512, PETRI_PLACES=102, PETRI_TRANSITIONS=88} [2023-11-29 00:14:29,688 INFO L281 CegarLoopForPetriNet]: 61 programPoint places, 41 predicate places. [2023-11-29 00:14:29,688 INFO L495 AbstractCegarLoop]: Abstraction has has 102 places, 88 transitions, 512 flow [2023-11-29 00:14:29,689 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 33.0) internal successors, (396), 12 states have internal predecessors, (396), 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) [2023-11-29 00:14:29,689 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 00:14:29,689 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:14:29,694 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5006d8ce-3a1a-4930-a55a-c63476efc892/bin/uautomizer-verify-BQ2R08f2Ya/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 (14)] Ended with exit code 0 [2023-11-29 00:14:29,889 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5006d8ce-3a1a-4930-a55a-c63476efc892/bin/uautomizer-verify-BQ2R08f2Ya/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 [2023-11-29 00:14:29,890 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting thread2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 35 more)] === [2023-11-29 00:14:29,890 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:14:29,890 INFO L85 PathProgramCache]: Analyzing trace with hash -1214305542, now seen corresponding path program 1 times [2023-11-29 00:14:29,890 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 00:14:29,890 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [22510919] [2023-11-29 00:14:29,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:14:29,891 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 [2023-11-29 00:14:29,891 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5006d8ce-3a1a-4930-a55a-c63476efc892/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 00:14:29,892 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5006d8ce-3a1a-4930-a55a-c63476efc892/bin/uautomizer-verify-BQ2R08f2Ya/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) [2023-11-29 00:14:29,893 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5006d8ce-3a1a-4930-a55a-c63476efc892/bin/uautomizer-verify-BQ2R08f2Ya/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 (15)] Waiting until timeout for monitored process [2023-11-29 00:14:30,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:14:30,015 INFO L262 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 15 conjunts are in the unsatisfiable core [2023-11-29 00:14:30,017 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:14:30,031 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 13 treesize of output 7 [2023-11-29 00:14:30,055 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 00:14:30,056 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 [2023-11-29 00:14:30,063 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 00:14:30,064 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 [2023-11-29 00:14:30,073 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 00:14:30,073 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 [2023-11-29 00:14:30,084 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 00:14:30,084 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 [2023-11-29 00:14:30,091 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 00:14:30,091 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 [2023-11-29 00:14:30,466 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 00:14:30,466 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 00:14:31,440 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 00:14:31,441 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 00:14:31,441 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [22510919] [2023-11-29 00:14:31,441 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [22510919] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 00:14:31,441 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 00:14:31,441 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2023-11-29 00:14:31,441 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [494110958] [2023-11-29 00:14:31,441 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 00:14:31,442 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-29 00:14:31,442 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 00:14:31,443 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-29 00:14:31,443 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2023-11-29 00:14:34,499 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 31 out of 62 [2023-11-29 00:14:34,500 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 88 transitions, 512 flow. Second operand has 12 states, 12 states have (on average 33.333333333333336) internal successors, (400), 12 states have internal predecessors, (400), 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) [2023-11-29 00:14:34,500 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 00:14:34,500 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 31 of 62 [2023-11-29 00:14:34,501 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 00:14:37,943 INFO L124 PetriNetUnfolderBase]: 3096/5133 cut-off events. [2023-11-29 00:14:37,943 INFO L125 PetriNetUnfolderBase]: For 4446/4554 co-relation queries the response was YES. [2023-11-29 00:14:37,966 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14302 conditions, 5133 events. 3096/5133 cut-off events. For 4446/4554 co-relation queries the response was YES. Maximal size of possible extension queue 110. Compared 26542 event pairs, 234 based on Foata normal form. 508/5108 useless extension candidates. Maximal degree in co-relation 14271. Up to 981 conditions per place. [2023-11-29 00:14:38,000 INFO L140 encePairwiseOnDemand]: 52/62 looper letters, 246 selfloop transitions, 27 changer transitions 0/289 dead transitions. [2023-11-29 00:14:38,000 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 289 transitions, 2033 flow [2023-11-29 00:14:38,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-29 00:14:38,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2023-11-29 00:14:38,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 637 transitions. [2023-11-29 00:14:38,005 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6849462365591398 [2023-11-29 00:14:38,005 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 637 transitions. [2023-11-29 00:14:38,005 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 637 transitions. [2023-11-29 00:14:38,006 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 00:14:38,006 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 637 transitions. [2023-11-29 00:14:38,008 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 42.46666666666667) internal successors, (637), 15 states have internal predecessors, (637), 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) [2023-11-29 00:14:38,011 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 62.0) internal successors, (992), 16 states have internal predecessors, (992), 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) [2023-11-29 00:14:38,012 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 62.0) internal successors, (992), 16 states have internal predecessors, (992), 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) [2023-11-29 00:14:38,012 INFO L175 Difference]: Start difference. First operand has 102 places, 88 transitions, 512 flow. Second operand 15 states and 637 transitions. [2023-11-29 00:14:38,012 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 289 transitions, 2033 flow [2023-11-29 00:14:38,033 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 111 places, 289 transitions, 1855 flow, removed 69 selfloop flow, removed 3 redundant places. [2023-11-29 00:14:38,038 INFO L231 Difference]: Finished difference. Result has 115 places, 98 transitions, 593 flow [2023-11-29 00:14:38,038 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=460, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=593, PETRI_PLACES=115, PETRI_TRANSITIONS=98} [2023-11-29 00:14:38,039 INFO L281 CegarLoopForPetriNet]: 61 programPoint places, 54 predicate places. [2023-11-29 00:14:38,039 INFO L495 AbstractCegarLoop]: Abstraction has has 115 places, 98 transitions, 593 flow [2023-11-29 00:14:38,040 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 33.333333333333336) internal successors, (400), 12 states have internal predecessors, (400), 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) [2023-11-29 00:14:38,040 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 00:14:38,040 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:14:38,046 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5006d8ce-3a1a-4930-a55a-c63476efc892/bin/uautomizer-verify-BQ2R08f2Ya/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 (15)] Ended with exit code 0 [2023-11-29 00:14:38,244 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5006d8ce-3a1a-4930-a55a-c63476efc892/bin/uautomizer-verify-BQ2R08f2Ya/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 [2023-11-29 00:14:38,245 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 35 more)] === [2023-11-29 00:14:38,245 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:14:38,245 INFO L85 PathProgramCache]: Analyzing trace with hash -225241241, now seen corresponding path program 1 times [2023-11-29 00:14:38,245 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 00:14:38,246 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1610544504] [2023-11-29 00:14:38,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:14:38,246 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 [2023-11-29 00:14:38,246 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5006d8ce-3a1a-4930-a55a-c63476efc892/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 00:14:38,247 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5006d8ce-3a1a-4930-a55a-c63476efc892/bin/uautomizer-verify-BQ2R08f2Ya/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) [2023-11-29 00:14:38,249 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5006d8ce-3a1a-4930-a55a-c63476efc892/bin/uautomizer-verify-BQ2R08f2Ya/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 (16)] Waiting until timeout for monitored process [2023-11-29 00:14:38,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:14:38,356 INFO L262 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-29 00:14:38,358 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:14:38,539 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:14:38,539 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 00:14:38,540 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 00:14:38,540 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1610544504] [2023-11-29 00:14:38,540 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1610544504] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:14:38,540 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:14:38,540 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-29 00:14:38,540 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1701322947] [2023-11-29 00:14:38,540 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:14:38,541 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 00:14:38,541 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 00:14:38,541 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 00:14:38,542 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-11-29 00:14:38,542 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 35 out of 62 [2023-11-29 00:14:38,542 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 98 transitions, 593 flow. Second operand has 5 states, 5 states have (on average 37.2) internal successors, (186), 5 states have internal predecessors, (186), 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) [2023-11-29 00:14:38,542 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 00:14:38,542 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 35 of 62 [2023-11-29 00:14:38,542 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 00:14:40,507 INFO L124 PetriNetUnfolderBase]: 4208/7290 cut-off events. [2023-11-29 00:14:40,507 INFO L125 PetriNetUnfolderBase]: For 9436/9500 co-relation queries the response was YES. [2023-11-29 00:14:40,542 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22353 conditions, 7290 events. 4208/7290 cut-off events. For 9436/9500 co-relation queries the response was YES. Maximal size of possible extension queue 165. Compared 42959 event pairs, 534 based on Foata normal form. 2/6499 useless extension candidates. Maximal degree in co-relation 22317. Up to 4294 conditions per place. [2023-11-29 00:14:40,570 INFO L140 encePairwiseOnDemand]: 52/62 looper letters, 107 selfloop transitions, 31 changer transitions 2/163 dead transitions. [2023-11-29 00:14:40,570 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 119 places, 163 transitions, 1153 flow [2023-11-29 00:14:40,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 00:14:40,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-29 00:14:40,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 247 transitions. [2023-11-29 00:14:40,573 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7967741935483871 [2023-11-29 00:14:40,573 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 247 transitions. [2023-11-29 00:14:40,573 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 247 transitions. [2023-11-29 00:14:40,573 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 00:14:40,573 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 247 transitions. [2023-11-29 00:14:40,574 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 49.4) internal successors, (247), 5 states have internal predecessors, (247), 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) [2023-11-29 00:14:40,576 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 62.0) internal successors, (372), 6 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) [2023-11-29 00:14:40,576 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 62.0) internal successors, (372), 6 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) [2023-11-29 00:14:40,576 INFO L175 Difference]: Start difference. First operand has 115 places, 98 transitions, 593 flow. Second operand 5 states and 247 transitions. [2023-11-29 00:14:40,576 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 119 places, 163 transitions, 1153 flow [2023-11-29 00:14:40,599 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 116 places, 163 transitions, 1096 flow, removed 13 selfloop flow, removed 3 redundant places. [2023-11-29 00:14:40,602 INFO L231 Difference]: Finished difference. Result has 119 places, 118 transitions, 746 flow [2023-11-29 00:14:40,602 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=549, PETRI_DIFFERENCE_MINUEND_PLACES=112, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=98, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=746, PETRI_PLACES=119, PETRI_TRANSITIONS=118} [2023-11-29 00:14:40,602 INFO L281 CegarLoopForPetriNet]: 61 programPoint places, 58 predicate places. [2023-11-29 00:14:40,602 INFO L495 AbstractCegarLoop]: Abstraction has has 119 places, 118 transitions, 746 flow [2023-11-29 00:14:40,603 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 37.2) internal successors, (186), 5 states have internal predecessors, (186), 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) [2023-11-29 00:14:40,603 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 00:14:40,603 INFO L208 CegarLoopForPetriNet]: trace histogram [11, 10, 1, 1] [2023-11-29 00:14:40,606 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5006d8ce-3a1a-4930-a55a-c63476efc892/bin/uautomizer-verify-BQ2R08f2Ya/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 (16)] Forceful destruction successful, exit code 0 [2023-11-29 00:14:40,803 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5006d8ce-3a1a-4930-a55a-c63476efc892/bin/uautomizer-verify-BQ2R08f2Ya/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 [2023-11-29 00:14:40,803 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 35 more)] === [2023-11-29 00:14:40,804 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:14:40,804 INFO L85 PathProgramCache]: Analyzing trace with hash -684472731, now seen corresponding path program 3 times [2023-11-29 00:14:40,805 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 00:14:40,805 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2076529403] [2023-11-29 00:14:40,805 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-29 00:14:40,805 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 [2023-11-29 00:14:40,805 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5006d8ce-3a1a-4930-a55a-c63476efc892/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 00:14:40,806 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5006d8ce-3a1a-4930-a55a-c63476efc892/bin/uautomizer-verify-BQ2R08f2Ya/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) [2023-11-29 00:14:40,808 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5006d8ce-3a1a-4930-a55a-c63476efc892/bin/uautomizer-verify-BQ2R08f2Ya/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 (17)] Waiting until timeout for monitored process [2023-11-29 00:14:41,124 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2023-11-29 00:14:41,124 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 00:14:41,131 INFO L262 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 18 conjunts are in the unsatisfiable core [2023-11-29 00:14:41,133 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:14:41,150 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 [2023-11-29 00:14:41,177 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 00:14:41,178 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 [2023-11-29 00:14:41,185 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 00:14:41,186 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 [2023-11-29 00:14:41,196 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 00:14:41,197 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 [2023-11-29 00:14:41,205 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 00:14:41,206 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 [2023-11-29 00:14:41,216 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 00:14:41,216 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 [2023-11-29 00:14:41,928 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 0 proven. 110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:14:41,929 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 00:14:45,434 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 0 proven. 110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:14:45,434 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 00:14:45,434 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2076529403] [2023-11-29 00:14:45,435 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2076529403] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 00:14:45,435 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 00:14:45,435 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 24 [2023-11-29 00:14:45,435 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [25509120] [2023-11-29 00:14:45,435 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 00:14:45,435 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-11-29 00:14:45,436 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 00:14:45,437 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-11-29 00:14:45,437 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=173, Invalid=477, Unknown=0, NotChecked=0, Total=650 [2023-11-29 00:14:59,140 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 34 out of 62 [2023-11-29 00:14:59,141 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 119 places, 118 transitions, 746 flow. Second operand has 26 states, 26 states have (on average 35.76923076923077) internal successors, (930), 26 states have internal predecessors, (930), 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) [2023-11-29 00:14:59,141 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 00:14:59,141 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 34 of 62 [2023-11-29 00:14:59,141 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 00:15:36,294 INFO L124 PetriNetUnfolderBase]: 4171/7234 cut-off events. [2023-11-29 00:15:36,295 INFO L125 PetriNetUnfolderBase]: For 11494/11510 co-relation queries the response was YES. [2023-11-29 00:15:36,323 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25582 conditions, 7234 events. 4171/7234 cut-off events. For 11494/11510 co-relation queries the response was YES. Maximal size of possible extension queue 165. Compared 43912 event pairs, 2522 based on Foata normal form. 12/7099 useless extension candidates. Maximal degree in co-relation 25543. Up to 6299 conditions per place. [2023-11-29 00:15:36,364 INFO L140 encePairwiseOnDemand]: 57/62 looper letters, 66 selfloop transitions, 66 changer transitions 0/154 dead transitions. [2023-11-29 00:15:36,365 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 163 places, 154 transitions, 1274 flow [2023-11-29 00:15:36,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2023-11-29 00:15:36,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2023-11-29 00:15:36,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 1667 transitions. [2023-11-29 00:15:36,370 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5845021037868162 [2023-11-29 00:15:36,370 INFO L72 ComplementDD]: Start complementDD. Operand 46 states and 1667 transitions. [2023-11-29 00:15:36,370 INFO L73 IsDeterministic]: Start isDeterministic. Operand 46 states and 1667 transitions. [2023-11-29 00:15:36,371 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 00:15:36,371 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 46 states and 1667 transitions. [2023-11-29 00:15:36,378 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 47 states, 46 states have (on average 36.23913043478261) internal successors, (1667), 46 states have internal predecessors, (1667), 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) [2023-11-29 00:15:36,385 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 47 states, 47 states have (on average 62.0) internal successors, (2914), 47 states have internal predecessors, (2914), 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) [2023-11-29 00:15:36,387 INFO L81 ComplementDD]: Finished complementDD. Result has 47 states, 47 states have (on average 62.0) internal successors, (2914), 47 states have internal predecessors, (2914), 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) [2023-11-29 00:15:36,387 INFO L175 Difference]: Start difference. First operand has 119 places, 118 transitions, 746 flow. Second operand 46 states and 1667 transitions. [2023-11-29 00:15:36,387 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 163 places, 154 transitions, 1274 flow [2023-11-29 00:15:36,415 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 163 places, 154 transitions, 1266 flow, removed 4 selfloop flow, removed 0 redundant places. [2023-11-29 00:15:36,418 INFO L231 Difference]: Finished difference. Result has 175 places, 154 transitions, 1188 flow [2023-11-29 00:15:36,419 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=738, PETRI_DIFFERENCE_MINUEND_PLACES=118, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=118, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=46, PETRI_FLOW=1188, PETRI_PLACES=175, PETRI_TRANSITIONS=154} [2023-11-29 00:15:36,419 INFO L281 CegarLoopForPetriNet]: 61 programPoint places, 114 predicate places. [2023-11-29 00:15:36,419 INFO L495 AbstractCegarLoop]: Abstraction has has 175 places, 154 transitions, 1188 flow [2023-11-29 00:15:36,420 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 35.76923076923077) internal successors, (930), 26 states have internal predecessors, (930), 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) [2023-11-29 00:15:36,420 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 00:15:36,420 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:15:36,424 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5006d8ce-3a1a-4930-a55a-c63476efc892/bin/uautomizer-verify-BQ2R08f2Ya/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 (17)] Ended with exit code 0 [2023-11-29 00:15:36,623 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5006d8ce-3a1a-4930-a55a-c63476efc892/bin/uautomizer-verify-BQ2R08f2Ya/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 [2023-11-29 00:15:36,624 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 35 more)] === [2023-11-29 00:15:36,624 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:15:36,624 INFO L85 PathProgramCache]: Analyzing trace with hash -1194238229, now seen corresponding path program 1 times [2023-11-29 00:15:36,624 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 00:15:36,624 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1322885812] [2023-11-29 00:15:36,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:15:36,625 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 00:15:36,625 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5006d8ce-3a1a-4930-a55a-c63476efc892/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 00:15:36,626 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5006d8ce-3a1a-4930-a55a-c63476efc892/bin/uautomizer-verify-BQ2R08f2Ya/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) [2023-11-29 00:15:36,627 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5006d8ce-3a1a-4930-a55a-c63476efc892/bin/uautomizer-verify-BQ2R08f2Ya/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 (18)] Waiting until timeout for monitored process [2023-11-29 00:15:36,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:15:36,832 INFO L262 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-29 00:15:36,834 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:15:36,952 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 00:15:36,952 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 00:15:37,123 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 00:15:37,124 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 00:15:37,124 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1322885812] [2023-11-29 00:15:37,124 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1322885812] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 00:15:37,124 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 00:15:37,124 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2023-11-29 00:15:37,124 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1450089899] [2023-11-29 00:15:37,124 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 00:15:37,125 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-29 00:15:37,125 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 00:15:37,126 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-29 00:15:37,126 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2023-11-29 00:15:37,356 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 34 out of 62 [2023-11-29 00:15:37,357 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 175 places, 154 transitions, 1188 flow. Second operand has 10 states, 10 states have (on average 36.3) internal successors, (363), 10 states have internal predecessors, (363), 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) [2023-11-29 00:15:37,357 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 00:15:37,357 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 34 of 62 [2023-11-29 00:15:37,357 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 00:15:41,986 INFO L124 PetriNetUnfolderBase]: 10338/17031 cut-off events. [2023-11-29 00:15:41,987 INFO L125 PetriNetUnfolderBase]: For 24345/24534 co-relation queries the response was YES. [2023-11-29 00:15:42,160 INFO L83 FinitePrefix]: Finished finitePrefix Result has 60121 conditions, 17031 events. 10338/17031 cut-off events. For 24345/24534 co-relation queries the response was YES. Maximal size of possible extension queue 334. Compared 110953 event pairs, 2201 based on Foata normal form. 19/16791 useless extension candidates. Maximal degree in co-relation 60068. Up to 5252 conditions per place. [2023-11-29 00:15:42,244 INFO L140 encePairwiseOnDemand]: 55/62 looper letters, 230 selfloop transitions, 66 changer transitions 0/313 dead transitions. [2023-11-29 00:15:42,245 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 184 places, 313 transitions, 2691 flow [2023-11-29 00:15:42,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-29 00:15:42,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-11-29 00:15:42,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 439 transitions. [2023-11-29 00:15:42,247 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7080645161290322 [2023-11-29 00:15:42,247 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 439 transitions. [2023-11-29 00:15:42,247 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 439 transitions. [2023-11-29 00:15:42,247 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 00:15:42,247 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 439 transitions. [2023-11-29 00:15:42,249 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 43.9) internal successors, (439), 10 states have internal predecessors, (439), 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) [2023-11-29 00:15:42,250 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 62.0) internal successors, (682), 11 states have internal predecessors, (682), 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) [2023-11-29 00:15:42,250 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 62.0) internal successors, (682), 11 states have internal predecessors, (682), 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) [2023-11-29 00:15:42,250 INFO L175 Difference]: Start difference. First operand has 175 places, 154 transitions, 1188 flow. Second operand 10 states and 439 transitions. [2023-11-29 00:15:42,251 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 184 places, 313 transitions, 2691 flow [2023-11-29 00:15:42,347 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 163 places, 313 transitions, 2529 flow, removed 51 selfloop flow, removed 21 redundant places. [2023-11-29 00:15:42,354 INFO L231 Difference]: Finished difference. Result has 166 places, 165 transitions, 1293 flow [2023-11-29 00:15:42,354 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=1026, PETRI_DIFFERENCE_MINUEND_PLACES=154, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=154, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=55, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=97, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1293, PETRI_PLACES=166, PETRI_TRANSITIONS=165} [2023-11-29 00:15:42,355 INFO L281 CegarLoopForPetriNet]: 61 programPoint places, 105 predicate places. [2023-11-29 00:15:42,355 INFO L495 AbstractCegarLoop]: Abstraction has has 166 places, 165 transitions, 1293 flow [2023-11-29 00:15:42,355 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 36.3) internal successors, (363), 10 states have internal predecessors, (363), 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) [2023-11-29 00:15:42,356 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 00:15:42,356 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:15:42,361 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5006d8ce-3a1a-4930-a55a-c63476efc892/bin/uautomizer-verify-BQ2R08f2Ya/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 (18)] Ended with exit code 0 [2023-11-29 00:15:42,558 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5006d8ce-3a1a-4930-a55a-c63476efc892/bin/uautomizer-verify-BQ2R08f2Ya/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 [2023-11-29 00:15:42,558 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 35 more)] === [2023-11-29 00:15:42,559 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:15:42,559 INFO L85 PathProgramCache]: Analyzing trace with hash 1077657290, now seen corresponding path program 1 times [2023-11-29 00:15:42,559 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 00:15:42,559 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [715624703] [2023-11-29 00:15:42,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:15:42,559 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 [2023-11-29 00:15:42,559 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5006d8ce-3a1a-4930-a55a-c63476efc892/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 00:15:42,560 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5006d8ce-3a1a-4930-a55a-c63476efc892/bin/uautomizer-verify-BQ2R08f2Ya/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) [2023-11-29 00:15:42,561 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5006d8ce-3a1a-4930-a55a-c63476efc892/bin/uautomizer-verify-BQ2R08f2Ya/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 (19)] Waiting until timeout for monitored process [2023-11-29 00:15:42,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:15:42,762 INFO L262 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-29 00:15:42,764 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:15:42,909 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:15:42,909 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 00:15:43,089 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:15:43,089 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 00:15:43,089 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [715624703] [2023-11-29 00:15:43,089 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [715624703] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 00:15:43,089 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 00:15:43,089 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2023-11-29 00:15:43,090 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [244428368] [2023-11-29 00:15:43,090 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 00:15:43,090 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-29 00:15:43,090 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 00:15:43,091 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-29 00:15:43,091 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2023-11-29 00:15:43,312 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 34 out of 62 [2023-11-29 00:15:43,312 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 166 places, 165 transitions, 1293 flow. Second operand has 10 states, 10 states have (on average 36.5) internal successors, (365), 10 states have internal predecessors, (365), 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) [2023-11-29 00:15:43,313 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 00:15:43,313 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 34 of 62 [2023-11-29 00:15:43,313 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 00:15:48,743 INFO L124 PetriNetUnfolderBase]: 11220/18105 cut-off events. [2023-11-29 00:15:48,743 INFO L125 PetriNetUnfolderBase]: For 28933/29219 co-relation queries the response was YES. [2023-11-29 00:15:48,920 INFO L83 FinitePrefix]: Finished finitePrefix Result has 66322 conditions, 18105 events. 11220/18105 cut-off events. For 28933/29219 co-relation queries the response was YES. Maximal size of possible extension queue 351. Compared 115339 event pairs, 2539 based on Foata normal form. 32/17894 useless extension candidates. Maximal degree in co-relation 66266. Up to 6284 conditions per place. [2023-11-29 00:15:49,010 INFO L140 encePairwiseOnDemand]: 55/62 looper letters, 232 selfloop transitions, 66 changer transitions 0/321 dead transitions. [2023-11-29 00:15:49,010 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 175 places, 321 transitions, 2849 flow [2023-11-29 00:15:49,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-29 00:15:49,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-11-29 00:15:49,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 438 transitions. [2023-11-29 00:15:49,012 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7064516129032258 [2023-11-29 00:15:49,012 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 438 transitions. [2023-11-29 00:15:49,013 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 438 transitions. [2023-11-29 00:15:49,013 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 00:15:49,013 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 438 transitions. [2023-11-29 00:15:49,014 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 43.8) internal successors, (438), 10 states have internal predecessors, (438), 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) [2023-11-29 00:15:49,015 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 62.0) internal successors, (682), 11 states have internal predecessors, (682), 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) [2023-11-29 00:15:49,016 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 62.0) internal successors, (682), 11 states have internal predecessors, (682), 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) [2023-11-29 00:15:49,016 INFO L175 Difference]: Start difference. First operand has 166 places, 165 transitions, 1293 flow. Second operand 10 states and 438 transitions. [2023-11-29 00:15:49,016 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 175 places, 321 transitions, 2849 flow [2023-11-29 00:15:49,098 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 172 places, 321 transitions, 2842 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-11-29 00:15:49,104 INFO L231 Difference]: Finished difference. Result has 175 places, 176 transitions, 1553 flow [2023-11-29 00:15:49,104 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=1286, PETRI_DIFFERENCE_MINUEND_PLACES=163, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=165, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=55, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=108, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1553, PETRI_PLACES=175, PETRI_TRANSITIONS=176} [2023-11-29 00:15:49,105 INFO L281 CegarLoopForPetriNet]: 61 programPoint places, 114 predicate places. [2023-11-29 00:15:49,105 INFO L495 AbstractCegarLoop]: Abstraction has has 175 places, 176 transitions, 1553 flow [2023-11-29 00:15:49,105 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 36.5) internal successors, (365), 10 states have internal predecessors, (365), 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) [2023-11-29 00:15:49,105 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 00:15:49,105 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:15:49,111 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5006d8ce-3a1a-4930-a55a-c63476efc892/bin/uautomizer-verify-BQ2R08f2Ya/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 (19)] Ended with exit code 0 [2023-11-29 00:15:49,306 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5006d8ce-3a1a-4930-a55a-c63476efc892/bin/uautomizer-verify-BQ2R08f2Ya/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 [2023-11-29 00:15:49,306 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 35 more)] === [2023-11-29 00:15:49,306 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:15:49,307 INFO L85 PathProgramCache]: Analyzing trace with hash -1032132249, now seen corresponding path program 1 times [2023-11-29 00:15:49,307 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 00:15:49,307 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1687827392] [2023-11-29 00:15:49,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:15:49,308 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 [2023-11-29 00:15:49,308 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5006d8ce-3a1a-4930-a55a-c63476efc892/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 00:15:49,309 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5006d8ce-3a1a-4930-a55a-c63476efc892/bin/uautomizer-verify-BQ2R08f2Ya/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) [2023-11-29 00:15:49,311 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5006d8ce-3a1a-4930-a55a-c63476efc892/bin/uautomizer-verify-BQ2R08f2Ya/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 (20)] Waiting until timeout for monitored process [2023-11-29 00:15:49,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:15:49,537 INFO L262 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 18 conjunts are in the unsatisfiable core [2023-11-29 00:15:49,540 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:15:49,552 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 [2023-11-29 00:15:49,566 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 00:15:49,566 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 [2023-11-29 00:15:49,580 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 00:15:49,581 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 [2023-11-29 00:15:49,603 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 00:15:49,603 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 [2023-11-29 00:15:49,613 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 00:15:49,613 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 [2023-11-29 00:15:49,624 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 00:15:49,625 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 [2023-11-29 00:15:50,312 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 17 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:15:50,312 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 00:15:52,524 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 39 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:15:52,525 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 00:15:52,525 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1687827392] [2023-11-29 00:15:52,525 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1687827392] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 00:15:52,525 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 00:15:52,525 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8] total 15 [2023-11-29 00:15:52,525 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [763835399] [2023-11-29 00:15:52,525 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 00:15:52,526 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-11-29 00:15:52,526 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 00:15:52,526 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-11-29 00:15:52,527 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=191, Unknown=0, NotChecked=0, Total=240 [2023-11-29 00:16:01,209 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 32 out of 62 [2023-11-29 00:16:01,210 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 175 places, 176 transitions, 1553 flow. Second operand has 16 states, 16 states have (on average 34.75) internal successors, (556), 16 states have internal predecessors, (556), 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) [2023-11-29 00:16:01,210 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 00:16:01,210 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 32 of 62 [2023-11-29 00:16:01,210 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 00:16:11,884 INFO L124 PetriNetUnfolderBase]: 10714/18042 cut-off events. [2023-11-29 00:16:11,884 INFO L125 PetriNetUnfolderBase]: For 37685/38161 co-relation queries the response was YES. [2023-11-29 00:16:12,127 INFO L83 FinitePrefix]: Finished finitePrefix Result has 68282 conditions, 18042 events. 10714/18042 cut-off events. For 37685/38161 co-relation queries the response was YES. Maximal size of possible extension queue 346. Compared 122316 event pairs, 1566 based on Foata normal form. 326/17891 useless extension candidates. Maximal degree in co-relation 68222. Up to 5650 conditions per place. [2023-11-29 00:16:12,210 INFO L140 encePairwiseOnDemand]: 54/62 looper letters, 425 selfloop transitions, 69 changer transitions 0/528 dead transitions. [2023-11-29 00:16:12,210 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 192 places, 528 transitions, 4650 flow [2023-11-29 00:16:12,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-11-29 00:16:12,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2023-11-29 00:16:12,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 782 transitions. [2023-11-29 00:16:12,213 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7007168458781362 [2023-11-29 00:16:12,214 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 782 transitions. [2023-11-29 00:16:12,214 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 782 transitions. [2023-11-29 00:16:12,214 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 00:16:12,214 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 782 transitions. [2023-11-29 00:16:12,216 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 43.44444444444444) internal successors, (782), 18 states have internal predecessors, (782), 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) [2023-11-29 00:16:12,219 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 62.0) internal successors, (1178), 19 states have internal predecessors, (1178), 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) [2023-11-29 00:16:12,219 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 62.0) internal successors, (1178), 19 states have internal predecessors, (1178), 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) [2023-11-29 00:16:12,220 INFO L175 Difference]: Start difference. First operand has 175 places, 176 transitions, 1553 flow. Second operand 18 states and 782 transitions. [2023-11-29 00:16:12,220 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 192 places, 528 transitions, 4650 flow [2023-11-29 00:16:12,326 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 188 places, 528 transitions, 4602 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-11-29 00:16:12,332 INFO L231 Difference]: Finished difference. Result has 191 places, 188 transitions, 1810 flow [2023-11-29 00:16:12,333 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=1505, PETRI_DIFFERENCE_MINUEND_PLACES=171, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=176, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=58, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=115, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=1810, PETRI_PLACES=191, PETRI_TRANSITIONS=188} [2023-11-29 00:16:12,333 INFO L281 CegarLoopForPetriNet]: 61 programPoint places, 130 predicate places. [2023-11-29 00:16:12,333 INFO L495 AbstractCegarLoop]: Abstraction has has 191 places, 188 transitions, 1810 flow [2023-11-29 00:16:12,333 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 34.75) internal successors, (556), 16 states have internal predecessors, (556), 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) [2023-11-29 00:16:12,333 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 00:16:12,333 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:16:12,339 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5006d8ce-3a1a-4930-a55a-c63476efc892/bin/uautomizer-verify-BQ2R08f2Ya/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 (20)] Ended with exit code 0 [2023-11-29 00:16:12,534 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5006d8ce-3a1a-4930-a55a-c63476efc892/bin/uautomizer-verify-BQ2R08f2Ya/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 [2023-11-29 00:16:12,534 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 35 more)] === [2023-11-29 00:16:12,535 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:16:12,535 INFO L85 PathProgramCache]: Analyzing trace with hash 2042160892, now seen corresponding path program 1 times [2023-11-29 00:16:12,535 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 00:16:12,535 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [861705620] [2023-11-29 00:16:12,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:16:12,536 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 [2023-11-29 00:16:12,536 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5006d8ce-3a1a-4930-a55a-c63476efc892/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 00:16:12,537 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5006d8ce-3a1a-4930-a55a-c63476efc892/bin/uautomizer-verify-BQ2R08f2Ya/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) [2023-11-29 00:16:12,538 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5006d8ce-3a1a-4930-a55a-c63476efc892/bin/uautomizer-verify-BQ2R08f2Ya/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 (21)] Waiting until timeout for monitored process [2023-11-29 00:16:12,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:16:12,907 INFO L262 TraceCheckSpWp]: Trace formula consists of 167 conjuncts, 11 conjunts are in the unsatisfiable core [2023-11-29 00:16:12,910 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:16:13,469 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 00:16:13,469 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 63 treesize of output 19 [2023-11-29 00:16:13,626 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 00:16:13,626 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 00:16:16,933 INFO L349 Elim1Store]: treesize reduction 168, result has 22.6 percent of original size [2023-11-29 00:16:16,934 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 90 treesize of output 69 [2023-11-29 00:16:22,810 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 00:16:22,810 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 00:16:22,810 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [861705620] [2023-11-29 00:16:22,811 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [861705620] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 00:16:22,811 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 00:16:22,811 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 14 [2023-11-29 00:16:22,811 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1846719418] [2023-11-29 00:16:22,811 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 00:16:22,811 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-11-29 00:16:22,812 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 00:16:22,812 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-11-29 00:16:22,812 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=135, Unknown=1, NotChecked=0, Total=182 [2023-11-29 00:16:26,142 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.08s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-11-29 00:16:29,692 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.37s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 00:16:34,118 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 00:16:37,877 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.56s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 00:16:42,213 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 00:16:46,009 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.64s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 00:16:50,193 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.87s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 00:16:53,835 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.32s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-11-29 00:16:57,369 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.34s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 00:17:01,204 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.46s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 00:17:04,545 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.17s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 00:17:08,555 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.71s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 00:17:12,170 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.45s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 00:17:16,528 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 00:17:16,528 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 62 [2023-11-29 00:17:16,529 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 191 places, 188 transitions, 1810 flow. Second operand has 14 states, 14 states have (on average 24.071428571428573) internal successors, (337), 14 states have internal predecessors, (337), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:17:16,529 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 00:17:16,529 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 62 [2023-11-29 00:17:16,529 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 00:17:21,488 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-29 00:17:25,492 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-29 00:17:31,358 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-11-29 00:17:35,402 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-11-29 00:17:40,213 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 00:17:44,268 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-29 00:17:51,840 INFO L124 PetriNetUnfolderBase]: 19059/29822 cut-off events. [2023-11-29 00:17:51,840 INFO L125 PetriNetUnfolderBase]: For 86253/86260 co-relation queries the response was YES. [2023-11-29 00:17:52,242 INFO L83 FinitePrefix]: Finished finitePrefix Result has 122881 conditions, 29822 events. 19059/29822 cut-off events. For 86253/86260 co-relation queries the response was YES. Maximal size of possible extension queue 448. Compared 190906 event pairs, 1246 based on Foata normal form. 3/29815 useless extension candidates. Maximal degree in co-relation 122817. Up to 15854 conditions per place. [2023-11-29 00:17:52,386 INFO L140 encePairwiseOnDemand]: 51/62 looper letters, 334 selfloop transitions, 79 changer transitions 2/424 dead transitions. [2023-11-29 00:17:52,386 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 200 places, 424 transitions, 4513 flow [2023-11-29 00:17:52,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-29 00:17:52,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-11-29 00:17:52,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 371 transitions. [2023-11-29 00:17:52,391 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5983870967741935 [2023-11-29 00:17:52,391 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 371 transitions. [2023-11-29 00:17:52,391 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 371 transitions. [2023-11-29 00:17:52,391 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 00:17:52,391 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 371 transitions. [2023-11-29 00:17:52,392 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 37.1) internal successors, (371), 10 states have internal predecessors, (371), 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) [2023-11-29 00:17:52,393 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 62.0) internal successors, (682), 11 states have internal predecessors, (682), 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) [2023-11-29 00:17:52,394 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 62.0) internal successors, (682), 11 states have internal predecessors, (682), 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) [2023-11-29 00:17:52,394 INFO L175 Difference]: Start difference. First operand has 191 places, 188 transitions, 1810 flow. Second operand 10 states and 371 transitions. [2023-11-29 00:17:52,394 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 200 places, 424 transitions, 4513 flow [2023-11-29 00:17:52,720 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 195 places, 424 transitions, 4411 flow, removed 24 selfloop flow, removed 5 redundant places. [2023-11-29 00:17:52,726 INFO L231 Difference]: Finished difference. Result has 201 places, 225 transitions, 2261 flow [2023-11-29 00:17:52,727 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=1741, PETRI_DIFFERENCE_MINUEND_PLACES=186, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=188, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=130, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2261, PETRI_PLACES=201, PETRI_TRANSITIONS=225} [2023-11-29 00:17:52,727 INFO L281 CegarLoopForPetriNet]: 61 programPoint places, 140 predicate places. [2023-11-29 00:17:52,727 INFO L495 AbstractCegarLoop]: Abstraction has has 201 places, 225 transitions, 2261 flow [2023-11-29 00:17:52,728 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 24.071428571428573) internal successors, (337), 14 states have internal predecessors, (337), 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) [2023-11-29 00:17:52,728 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 00:17:52,728 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:17:52,735 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5006d8ce-3a1a-4930-a55a-c63476efc892/bin/uautomizer-verify-BQ2R08f2Ya/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 (21)] Ended with exit code 0 [2023-11-29 00:17:52,928 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5006d8ce-3a1a-4930-a55a-c63476efc892/bin/uautomizer-verify-BQ2R08f2Ya/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 [2023-11-29 00:17:52,929 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 35 more)] === [2023-11-29 00:17:52,929 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:17:52,929 INFO L85 PathProgramCache]: Analyzing trace with hash -402901516, now seen corresponding path program 1 times [2023-11-29 00:17:52,930 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 00:17:52,930 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [717944287] [2023-11-29 00:17:52,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:17:52,930 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 00:17:52,930 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5006d8ce-3a1a-4930-a55a-c63476efc892/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 00:17:52,931 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5006d8ce-3a1a-4930-a55a-c63476efc892/bin/uautomizer-verify-BQ2R08f2Ya/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) [2023-11-29 00:17:52,932 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5006d8ce-3a1a-4930-a55a-c63476efc892/bin/uautomizer-verify-BQ2R08f2Ya/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 (22)] Waiting until timeout for monitored process [2023-11-29 00:17:53,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:17:53,164 INFO L262 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-29 00:17:53,167 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:17:53,818 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 00:17:53,818 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 63 treesize of output 19 [2023-11-29 00:17:53,953 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 00:17:53,953 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 00:17:58,028 INFO L349 Elim1Store]: treesize reduction 168, result has 22.6 percent of original size [2023-11-29 00:17:58,028 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 89 treesize of output 68 [2023-11-29 00:18:05,805 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 00:18:05,805 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 00:18:05,805 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [717944287] [2023-11-29 00:18:05,805 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [717944287] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 00:18:05,805 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 00:18:05,805 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 16 [2023-11-29 00:18:05,805 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1222481245] [2023-11-29 00:18:05,806 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 00:18:05,806 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-11-29 00:18:05,806 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 00:18:05,807 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-11-29 00:18:05,807 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=182, Unknown=2, NotChecked=0, Total=240 [2023-11-29 00:18:09,447 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.53s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-11-29 00:18:12,722 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.18s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 00:18:16,671 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.79s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 00:18:19,882 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.10s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 00:18:22,556 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.59s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 00:18:25,827 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.17s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 00:18:29,280 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.35s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 00:18:32,462 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.07s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-11-29 00:18:35,442 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.89s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 00:18:39,129 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.59s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 00:18:42,316 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.08s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 00:18:45,537 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 00:18:48,648 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 00:18:52,169 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.42s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 00:18:52,169 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 62 [2023-11-29 00:18:52,170 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 201 places, 225 transitions, 2261 flow. Second operand has 16 states, 16 states have (on average 23.6875) internal successors, (379), 16 states have internal predecessors, (379), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:18:52,170 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 00:18:52,170 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 62 [2023-11-29 00:18:52,170 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 00:18:56,697 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-29 00:19:00,712 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-29 00:19:06,105 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-11-29 00:19:10,165 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-11-29 00:19:18,355 INFO L124 PetriNetUnfolderBase]: 22685/35370 cut-off events. [2023-11-29 00:19:18,355 INFO L125 PetriNetUnfolderBase]: For 132446/132449 co-relation queries the response was YES. [2023-11-29 00:19:18,771 INFO L83 FinitePrefix]: Finished finitePrefix Result has 163160 conditions, 35370 events. 22685/35370 cut-off events. For 132446/132449 co-relation queries the response was YES. Maximal size of possible extension queue 518. Compared 229664 event pairs, 2424 based on Foata normal form. 3/35363 useless extension candidates. Maximal degree in co-relation 163090. Up to 21031 conditions per place. [2023-11-29 00:19:19,136 INFO L140 encePairwiseOnDemand]: 50/62 looper letters, 391 selfloop transitions, 117 changer transitions 2/519 dead transitions. [2023-11-29 00:19:19,136 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 214 places, 519 transitions, 5752 flow [2023-11-29 00:19:19,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-29 00:19:19,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-11-29 00:19:19,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 488 transitions. [2023-11-29 00:19:19,139 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5622119815668203 [2023-11-29 00:19:19,139 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 488 transitions. [2023-11-29 00:19:19,140 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 488 transitions. [2023-11-29 00:19:19,140 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 00:19:19,140 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 488 transitions. [2023-11-29 00:19:19,141 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 34.857142857142854) internal successors, (488), 14 states have internal predecessors, (488), 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) [2023-11-29 00:19:19,143 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 62.0) internal successors, (930), 15 states have internal predecessors, (930), 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) [2023-11-29 00:19:19,143 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 62.0) internal successors, (930), 15 states have internal predecessors, (930), 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) [2023-11-29 00:19:19,143 INFO L175 Difference]: Start difference. First operand has 201 places, 225 transitions, 2261 flow. Second operand 14 states and 488 transitions. [2023-11-29 00:19:19,143 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 214 places, 519 transitions, 5752 flow [2023-11-29 00:19:19,652 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 212 places, 519 transitions, 5657 flow, removed 26 selfloop flow, removed 2 redundant places. [2023-11-29 00:19:19,657 INFO L231 Difference]: Finished difference. Result has 218 places, 287 transitions, 3130 flow [2023-11-29 00:19:19,658 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=2186, PETRI_DIFFERENCE_MINUEND_PLACES=199, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=225, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=65, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=140, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=3130, PETRI_PLACES=218, PETRI_TRANSITIONS=287} [2023-11-29 00:19:19,658 INFO L281 CegarLoopForPetriNet]: 61 programPoint places, 157 predicate places. [2023-11-29 00:19:19,658 INFO L495 AbstractCegarLoop]: Abstraction has has 218 places, 287 transitions, 3130 flow [2023-11-29 00:19:19,658 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 23.6875) internal successors, (379), 16 states have internal predecessors, (379), 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) [2023-11-29 00:19:19,658 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 00:19:19,658 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:19:19,663 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5006d8ce-3a1a-4930-a55a-c63476efc892/bin/uautomizer-verify-BQ2R08f2Ya/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 (22)] Ended with exit code 0 [2023-11-29 00:19:19,859 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5006d8ce-3a1a-4930-a55a-c63476efc892/bin/uautomizer-verify-BQ2R08f2Ya/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 [2023-11-29 00:19:19,859 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 35 more)] === [2023-11-29 00:19:19,859 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:19:19,859 INFO L85 PathProgramCache]: Analyzing trace with hash -282083668, now seen corresponding path program 2 times [2023-11-29 00:19:19,860 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 00:19:19,860 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2015366627] [2023-11-29 00:19:19,860 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 00:19:19,860 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 [2023-11-29 00:19:19,860 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5006d8ce-3a1a-4930-a55a-c63476efc892/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 00:19:19,861 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5006d8ce-3a1a-4930-a55a-c63476efc892/bin/uautomizer-verify-BQ2R08f2Ya/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) [2023-11-29 00:19:19,862 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5006d8ce-3a1a-4930-a55a-c63476efc892/bin/uautomizer-verify-BQ2R08f2Ya/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 (23)] Waiting until timeout for monitored process [2023-11-29 00:19:20,107 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-29 00:19:20,107 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 00:19:20,118 INFO L262 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-29 00:19:20,120 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:19:20,576 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 00:19:20,576 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 63 treesize of output 19 [2023-11-29 00:19:20,688 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 00:19:20,689 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 00:19:24,216 INFO L349 Elim1Store]: treesize reduction 168, result has 22.6 percent of original size [2023-11-29 00:19:24,216 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 90 treesize of output 69 [2023-11-29 00:19:28,006 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 00:19:28,006 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 00:19:28,006 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2015366627] [2023-11-29 00:19:28,006 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2015366627] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 00:19:28,006 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 00:19:28,006 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 16 [2023-11-29 00:19:28,006 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [739952110] [2023-11-29 00:19:28,006 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 00:19:28,007 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-11-29 00:19:28,007 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 00:19:28,007 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-11-29 00:19:28,007 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=186, Unknown=1, NotChecked=0, Total=240 [2023-11-29 00:19:30,650 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.58s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-11-29 00:19:33,512 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.84s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 00:19:36,593 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.98s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 00:19:39,432 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.81s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 00:19:42,663 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.13s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 00:19:45,463 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.77s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 00:19:48,742 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.17s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 00:19:51,409 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.57s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-11-29 00:19:54,227 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.79s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 00:19:57,599 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.28s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 00:20:00,432 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.81s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 00:20:03,802 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.26s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 00:20:06,796 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.95s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 00:20:09,652 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.76s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 00:20:09,653 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 62 [2023-11-29 00:20:09,653 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 218 places, 287 transitions, 3130 flow. Second operand has 16 states, 16 states have (on average 23.6875) internal successors, (379), 16 states have internal predecessors, (379), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:20:09,653 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 00:20:09,653 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 62 [2023-11-29 00:20:09,653 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 00:20:14,269 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-29 00:20:18,278 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-29 00:20:23,648 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-11-29 00:20:27,677 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-11-29 00:20:32,190 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 00:20:36,219 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-29 00:20:45,691 INFO L124 PetriNetUnfolderBase]: 25994/40365 cut-off events. [2023-11-29 00:20:45,691 INFO L125 PetriNetUnfolderBase]: For 198732/198735 co-relation queries the response was YES. [2023-11-29 00:20:46,161 INFO L83 FinitePrefix]: Finished finitePrefix Result has 203659 conditions, 40365 events. 25994/40365 cut-off events. For 198732/198735 co-relation queries the response was YES. Maximal size of possible extension queue 585. Compared 265987 event pairs, 3121 based on Foata normal form. 3/40358 useless extension candidates. Maximal degree in co-relation 203582. Up to 21861 conditions per place. [2023-11-29 00:20:46,384 INFO L140 encePairwiseOnDemand]: 50/62 looper letters, 418 selfloop transitions, 123 changer transitions 2/552 dead transitions. [2023-11-29 00:20:46,384 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 229 places, 552 transitions, 6589 flow [2023-11-29 00:20:46,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-29 00:20:46,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-11-29 00:20:46,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 436 transitions. [2023-11-29 00:20:46,389 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5860215053763441 [2023-11-29 00:20:46,389 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 436 transitions. [2023-11-29 00:20:46,389 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 436 transitions. [2023-11-29 00:20:46,390 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 00:20:46,390 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 436 transitions. [2023-11-29 00:20:46,390 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 36.333333333333336) internal successors, (436), 12 states have internal predecessors, (436), 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) [2023-11-29 00:20:46,391 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 62.0) internal successors, (806), 13 states have internal predecessors, (806), 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) [2023-11-29 00:20:46,391 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 62.0) internal successors, (806), 13 states have internal predecessors, (806), 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) [2023-11-29 00:20:46,391 INFO L175 Difference]: Start difference. First operand has 218 places, 287 transitions, 3130 flow. Second operand 12 states and 436 transitions. [2023-11-29 00:20:46,392 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 229 places, 552 transitions, 6589 flow [2023-11-29 00:20:47,153 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 224 places, 552 transitions, 6438 flow, removed 47 selfloop flow, removed 5 redundant places. [2023-11-29 00:20:47,160 INFO L231 Difference]: Finished difference. Result has 228 places, 312 transitions, 3623 flow [2023-11-29 00:20:47,160 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=2979, PETRI_DIFFERENCE_MINUEND_PLACES=213, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=287, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=102, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=173, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=3623, PETRI_PLACES=228, PETRI_TRANSITIONS=312} [2023-11-29 00:20:47,160 INFO L281 CegarLoopForPetriNet]: 61 programPoint places, 167 predicate places. [2023-11-29 00:20:47,161 INFO L495 AbstractCegarLoop]: Abstraction has has 228 places, 312 transitions, 3623 flow [2023-11-29 00:20:47,161 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 23.6875) internal successors, (379), 16 states have internal predecessors, (379), 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) [2023-11-29 00:20:47,161 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 00:20:47,161 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:20:47,165 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5006d8ce-3a1a-4930-a55a-c63476efc892/bin/uautomizer-verify-BQ2R08f2Ya/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 (23)] Ended with exit code 0 [2023-11-29 00:20:47,361 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5006d8ce-3a1a-4930-a55a-c63476efc892/bin/uautomizer-verify-BQ2R08f2Ya/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 [2023-11-29 00:20:47,361 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 35 more)] === [2023-11-29 00:20:47,362 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:20:47,362 INFO L85 PathProgramCache]: Analyzing trace with hash 1343797502, now seen corresponding path program 2 times [2023-11-29 00:20:47,362 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 00:20:47,362 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [843473766] [2023-11-29 00:20:47,362 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 00:20:47,362 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 [2023-11-29 00:20:47,362 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5006d8ce-3a1a-4930-a55a-c63476efc892/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 00:20:47,363 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5006d8ce-3a1a-4930-a55a-c63476efc892/bin/uautomizer-verify-BQ2R08f2Ya/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) [2023-11-29 00:20:47,364 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5006d8ce-3a1a-4930-a55a-c63476efc892/bin/uautomizer-verify-BQ2R08f2Ya/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 (24)] Waiting until timeout for monitored process [2023-11-29 00:20:47,582 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-29 00:20:47,582 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 00:20:47,590 INFO L262 TraceCheckSpWp]: Trace formula consists of 167 conjuncts, 11 conjunts are in the unsatisfiable core [2023-11-29 00:20:47,592 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:20:47,986 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 00:20:47,986 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 63 treesize of output 19 [2023-11-29 00:20:48,145 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 00:20:48,145 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 00:20:50,781 INFO L349 Elim1Store]: treesize reduction 168, result has 22.6 percent of original size [2023-11-29 00:20:50,782 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 90 treesize of output 69 [2023-11-29 00:20:54,312 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 00:20:54,312 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 00:20:54,312 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [843473766] [2023-11-29 00:20:54,312 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [843473766] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 00:20:54,312 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 00:20:54,312 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 14 [2023-11-29 00:20:54,312 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1044464038] [2023-11-29 00:20:54,313 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 00:20:54,313 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-11-29 00:20:54,313 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 00:20:54,313 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-11-29 00:20:54,314 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=135, Unknown=1, NotChecked=0, Total=182 [2023-11-29 00:20:56,979 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.55s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-11-29 00:20:59,641 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.64s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 00:21:02,973 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.17s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 00:21:05,987 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.99s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 00:21:09,456 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.29s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 00:21:12,115 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.62s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 00:21:15,239 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.94s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 00:21:17,760 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.40s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-11-29 00:21:20,527 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.75s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 00:21:23,564 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.89s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 00:21:26,262 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.66s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 00:21:29,310 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.88s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 00:21:32,032 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.70s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 00:21:35,072 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.90s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 00:21:35,072 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 62 [2023-11-29 00:21:35,072 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 228 places, 312 transitions, 3623 flow. Second operand has 14 states, 14 states have (on average 24.071428571428573) internal successors, (337), 14 states have internal predecessors, (337), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:21:35,072 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 00:21:35,072 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 62 [2023-11-29 00:21:35,072 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 00:21:39,459 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-29 00:21:43,463 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-29 00:21:48,426 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-11-29 00:21:52,450 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-29 00:21:56,457 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-11-29 00:22:00,472 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 00:22:04,631 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-29 00:22:08,653 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 00:22:21,365 INFO L124 PetriNetUnfolderBase]: 35126/53694 cut-off events. [2023-11-29 00:22:21,365 INFO L125 PetriNetUnfolderBase]: For 337598/337605 co-relation queries the response was YES. [2023-11-29 00:22:22,013 INFO L83 FinitePrefix]: Finished finitePrefix Result has 294050 conditions, 53694 events. 35126/53694 cut-off events. For 337598/337605 co-relation queries the response was YES. Maximal size of possible extension queue 770. Compared 359002 event pairs, 9336 based on Foata normal form. 3/53687 useless extension candidates. Maximal degree in co-relation 293968. Up to 38135 conditions per place. [2023-11-29 00:22:22,279 INFO L140 encePairwiseOnDemand]: 51/62 looper letters, 447 selfloop transitions, 97 changer transitions 2/555 dead transitions. [2023-11-29 00:22:22,279 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 237 places, 555 transitions, 7148 flow [2023-11-29 00:22:22,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-29 00:22:22,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-11-29 00:22:22,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 365 transitions. [2023-11-29 00:22:22,286 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5887096774193549 [2023-11-29 00:22:22,286 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 365 transitions. [2023-11-29 00:22:22,286 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 365 transitions. [2023-11-29 00:22:22,286 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 00:22:22,287 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 365 transitions. [2023-11-29 00:22:22,287 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 36.5) internal successors, (365), 10 states have internal predecessors, (365), 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) [2023-11-29 00:22:22,288 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 62.0) internal successors, (682), 11 states have internal predecessors, (682), 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) [2023-11-29 00:22:22,288 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 62.0) internal successors, (682), 11 states have internal predecessors, (682), 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) [2023-11-29 00:22:22,288 INFO L175 Difference]: Start difference. First operand has 228 places, 312 transitions, 3623 flow. Second operand 10 states and 365 transitions. [2023-11-29 00:22:22,288 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 237 places, 555 transitions, 7148 flow [2023-11-29 00:22:23,532 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 231 places, 555 transitions, 6970 flow, removed 51 selfloop flow, removed 6 redundant places. [2023-11-29 00:22:23,539 INFO L231 Difference]: Finished difference. Result has 235 places, 366 transitions, 4513 flow [2023-11-29 00:22:23,539 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=3483, PETRI_DIFFERENCE_MINUEND_PLACES=222, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=312, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=57, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=239, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4513, PETRI_PLACES=235, PETRI_TRANSITIONS=366} [2023-11-29 00:22:23,539 INFO L281 CegarLoopForPetriNet]: 61 programPoint places, 174 predicate places. [2023-11-29 00:22:23,539 INFO L495 AbstractCegarLoop]: Abstraction has has 235 places, 366 transitions, 4513 flow [2023-11-29 00:22:23,540 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 24.071428571428573) internal successors, (337), 14 states have internal predecessors, (337), 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) [2023-11-29 00:22:23,540 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 00:22:23,540 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:22:23,544 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5006d8ce-3a1a-4930-a55a-c63476efc892/bin/uautomizer-verify-BQ2R08f2Ya/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 (24)] Ended with exit code 0 [2023-11-29 00:22:23,740 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5006d8ce-3a1a-4930-a55a-c63476efc892/bin/uautomizer-verify-BQ2R08f2Ya/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 [2023-11-29 00:22:23,740 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 35 more)] === [2023-11-29 00:22:23,740 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:22:23,741 INFO L85 PathProgramCache]: Analyzing trace with hash 534461824, now seen corresponding path program 3 times [2023-11-29 00:22:23,741 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 00:22:23,741 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [187042818] [2023-11-29 00:22:23,741 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-29 00:22:23,741 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 [2023-11-29 00:22:23,741 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5006d8ce-3a1a-4930-a55a-c63476efc892/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 00:22:23,742 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5006d8ce-3a1a-4930-a55a-c63476efc892/bin/uautomizer-verify-BQ2R08f2Ya/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) [2023-11-29 00:22:23,743 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5006d8ce-3a1a-4930-a55a-c63476efc892/bin/uautomizer-verify-BQ2R08f2Ya/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 (25)] Waiting until timeout for monitored process [2023-11-29 00:22:23,968 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-11-29 00:22:23,968 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 00:22:23,976 INFO L262 TraceCheckSpWp]: Trace formula consists of 167 conjuncts, 11 conjunts are in the unsatisfiable core [2023-11-29 00:22:23,978 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:22:24,341 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 00:22:24,341 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 63 treesize of output 19 [2023-11-29 00:22:24,619 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 00:22:24,619 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 00:22:27,460 INFO L349 Elim1Store]: treesize reduction 168, result has 22.6 percent of original size [2023-11-29 00:22:27,460 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 90 treesize of output 69 [2023-11-29 00:22:31,300 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 00:22:31,300 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 00:22:31,301 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [187042818] [2023-11-29 00:22:31,301 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [187042818] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 00:22:31,301 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 00:22:31,301 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 14 [2023-11-29 00:22:31,301 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [57337998] [2023-11-29 00:22:31,301 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 00:22:31,301 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-11-29 00:22:31,301 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 00:22:31,302 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-11-29 00:22:31,302 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=130, Unknown=1, NotChecked=0, Total=182 [2023-11-29 00:22:34,120 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.58s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-11-29 00:22:36,953 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.73s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 00:22:40,392 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.21s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 00:22:43,364 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.87s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 00:22:46,499 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.89s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 00:22:49,235 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.62s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 00:22:52,793 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.27s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 00:22:55,867 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.88s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-11-29 00:22:59,063 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 00:23:02,362 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 00:23:05,328 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.87s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 00:23:08,494 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.91s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 00:23:11,406 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.80s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 00:23:14,821 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.18s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 00:23:14,821 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 62 [2023-11-29 00:23:14,821 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 235 places, 366 transitions, 4513 flow. Second operand has 14 states, 14 states have (on average 24.071428571428573) internal successors, (337), 14 states have internal predecessors, (337), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:23:14,822 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 00:23:14,822 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 62 [2023-11-29 00:23:14,822 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 00:23:19,231 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-29 00:23:23,235 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-29 00:23:28,233 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-11-29 00:23:32,251 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-29 00:23:36,262 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-11-29 00:23:40,267 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 00:23:44,479 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-29 00:23:48,499 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 00:24:02,311 INFO L124 PetriNetUnfolderBase]: 38435/58687 cut-off events. [2023-11-29 00:24:02,311 INFO L125 PetriNetUnfolderBase]: For 433818/433822 co-relation queries the response was YES. [2023-11-29 00:24:03,082 INFO L83 FinitePrefix]: Finished finitePrefix Result has 338205 conditions, 58687 events. 38435/58687 cut-off events. For 433818/433822 co-relation queries the response was YES. Maximal size of possible extension queue 838. Compared 397837 event pairs, 7687 based on Foata normal form. 4/58681 useless extension candidates. Maximal degree in co-relation 338118. Up to 41232 conditions per place. [2023-11-29 00:24:03,368 INFO L140 encePairwiseOnDemand]: 51/62 looper letters, 453 selfloop transitions, 109 changer transitions 2/573 dead transitions. [2023-11-29 00:24:03,368 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 244 places, 573 transitions, 7647 flow [2023-11-29 00:24:03,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-29 00:24:03,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-11-29 00:24:03,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 365 transitions. [2023-11-29 00:24:03,372 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5887096774193549 [2023-11-29 00:24:03,372 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 365 transitions. [2023-11-29 00:24:03,372 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 365 transitions. [2023-11-29 00:24:03,372 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 00:24:03,372 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 365 transitions. [2023-11-29 00:24:03,373 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 36.5) internal successors, (365), 10 states have internal predecessors, (365), 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) [2023-11-29 00:24:03,374 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 62.0) internal successors, (682), 11 states have internal predecessors, (682), 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) [2023-11-29 00:24:03,374 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 62.0) internal successors, (682), 11 states have internal predecessors, (682), 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) [2023-11-29 00:24:03,374 INFO L175 Difference]: Start difference. First operand has 235 places, 366 transitions, 4513 flow. Second operand 10 states and 365 transitions. [2023-11-29 00:24:03,374 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 244 places, 573 transitions, 7647 flow [2023-11-29 00:24:05,478 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 239 places, 573 transitions, 7507 flow, removed 43 selfloop flow, removed 5 redundant places. [2023-11-29 00:24:05,487 INFO L231 Difference]: Finished difference. Result has 241 places, 385 transitions, 4973 flow [2023-11-29 00:24:05,487 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=4391, PETRI_DIFFERENCE_MINUEND_PLACES=230, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=366, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=94, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=262, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4973, PETRI_PLACES=241, PETRI_TRANSITIONS=385} [2023-11-29 00:24:05,488 INFO L281 CegarLoopForPetriNet]: 61 programPoint places, 180 predicate places. [2023-11-29 00:24:05,488 INFO L495 AbstractCegarLoop]: Abstraction has has 241 places, 385 transitions, 4973 flow [2023-11-29 00:24:05,488 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 24.071428571428573) internal successors, (337), 14 states have internal predecessors, (337), 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) [2023-11-29 00:24:05,488 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 00:24:05,488 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:24:05,492 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5006d8ce-3a1a-4930-a55a-c63476efc892/bin/uautomizer-verify-BQ2R08f2Ya/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 (25)] Ended with exit code 0 [2023-11-29 00:24:05,688 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5006d8ce-3a1a-4930-a55a-c63476efc892/bin/uautomizer-verify-BQ2R08f2Ya/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 [2023-11-29 00:24:05,689 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 35 more)] === [2023-11-29 00:24:05,689 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:24:05,689 INFO L85 PathProgramCache]: Analyzing trace with hash -121212038, now seen corresponding path program 3 times [2023-11-29 00:24:05,689 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 00:24:05,689 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [156110007] [2023-11-29 00:24:05,689 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-29 00:24:05,689 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 [2023-11-29 00:24:05,689 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5006d8ce-3a1a-4930-a55a-c63476efc892/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 00:24:05,690 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5006d8ce-3a1a-4930-a55a-c63476efc892/bin/uautomizer-verify-BQ2R08f2Ya/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) [2023-11-29 00:24:05,691 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5006d8ce-3a1a-4930-a55a-c63476efc892/bin/uautomizer-verify-BQ2R08f2Ya/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 (26)] Waiting until timeout for monitored process [2023-11-29 00:24:05,927 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-11-29 00:24:05,927 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 00:24:05,937 INFO L262 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-29 00:24:05,939 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:24:06,306 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 00:24:06,306 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 63 treesize of output 19 [2023-11-29 00:24:06,460 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 00:24:06,460 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 00:24:09,297 INFO L349 Elim1Store]: treesize reduction 168, result has 22.6 percent of original size [2023-11-29 00:24:09,297 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 89 treesize of output 68 [2023-11-29 00:24:15,489 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 00:24:15,489 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 00:24:15,489 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [156110007] [2023-11-29 00:24:15,489 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [156110007] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 00:24:15,489 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 00:24:15,489 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 16 [2023-11-29 00:24:15,490 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1427392516] [2023-11-29 00:24:15,490 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 00:24:15,490 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-11-29 00:24:15,490 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 00:24:15,490 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-11-29 00:24:15,491 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=180, Unknown=2, NotChecked=0, Total=240 [2023-11-29 00:24:18,227 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.55s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-11-29 00:24:21,058 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.76s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 00:24:24,068 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.79s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 00:24:26,864 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.72s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 00:24:30,349 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.27s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 00:24:33,215 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.77s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 00:24:36,373 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.93s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 00:24:39,266 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.68s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-11-29 00:24:42,144 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.80s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 00:24:45,903 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.50s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 00:24:48,927 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.94s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 00:24:52,079 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.92s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 00:24:54,879 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.73s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 00:24:58,172 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 00:24:58,172 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 62 [2023-11-29 00:24:58,172 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 241 places, 385 transitions, 4973 flow. Second operand has 16 states, 16 states have (on average 23.6875) internal successors, (379), 16 states have internal predecessors, (379), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:24:58,172 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 00:24:58,173 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 62 [2023-11-29 00:24:58,173 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 00:25:02,873 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-29 00:25:06,883 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-29 00:25:12,351 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-11-29 00:25:16,429 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 00:25:20,438 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-11-29 00:25:24,445 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-29 00:25:28,517 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 00:25:32,521 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 00:25:51,581 INFO L124 PetriNetUnfolderBase]: 47931/72650 cut-off events. [2023-11-29 00:25:51,581 INFO L125 PetriNetUnfolderBase]: For 621276/621283 co-relation queries the response was YES. [2023-11-29 00:25:52,752 INFO L83 FinitePrefix]: Finished finitePrefix Result has 436611 conditions, 72650 events. 47931/72650 cut-off events. For 621276/621283 co-relation queries the response was YES. Maximal size of possible extension queue 1003. Compared 498142 event pairs, 13760 based on Foata normal form. 3/72643 useless extension candidates. Maximal degree in co-relation 436522. Up to 54451 conditions per place. [2023-11-29 00:25:53,159 INFO L140 encePairwiseOnDemand]: 49/62 looper letters, 493 selfloop transitions, 164 changer transitions 2/668 dead transitions. [2023-11-29 00:25:53,159 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 256 places, 668 transitions, 9365 flow [2023-11-29 00:25:53,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-11-29 00:25:53,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2023-11-29 00:25:53,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 519 transitions. [2023-11-29 00:25:53,164 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5231854838709677 [2023-11-29 00:25:53,164 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 519 transitions. [2023-11-29 00:25:53,164 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 519 transitions. [2023-11-29 00:25:53,165 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 00:25:53,165 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 519 transitions. [2023-11-29 00:25:53,166 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 32.4375) internal successors, (519), 16 states have internal predecessors, (519), 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) [2023-11-29 00:25:53,168 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 62.0) internal successors, (1054), 17 states have internal predecessors, (1054), 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) [2023-11-29 00:25:53,168 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 62.0) internal successors, (1054), 17 states have internal predecessors, (1054), 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) [2023-11-29 00:25:53,168 INFO L175 Difference]: Start difference. First operand has 241 places, 385 transitions, 4973 flow. Second operand 16 states and 519 transitions. [2023-11-29 00:25:53,168 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 256 places, 668 transitions, 9365 flow [2023-11-29 00:25:55,668 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 250 places, 668 transitions, 9202 flow, removed 40 selfloop flow, removed 6 redundant places. [2023-11-29 00:25:55,677 INFO L231 Difference]: Finished difference. Result has 256 places, 480 transitions, 6838 flow [2023-11-29 00:25:55,677 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=4820, PETRI_DIFFERENCE_MINUEND_PLACES=235, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=385, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=89, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=263, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=6838, PETRI_PLACES=256, PETRI_TRANSITIONS=480} [2023-11-29 00:25:55,677 INFO L281 CegarLoopForPetriNet]: 61 programPoint places, 195 predicate places. [2023-11-29 00:25:55,677 INFO L495 AbstractCegarLoop]: Abstraction has has 256 places, 480 transitions, 6838 flow [2023-11-29 00:25:55,677 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 23.6875) internal successors, (379), 16 states have internal predecessors, (379), 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) [2023-11-29 00:25:55,678 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 00:25:55,678 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:25:55,683 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5006d8ce-3a1a-4930-a55a-c63476efc892/bin/uautomizer-verify-BQ2R08f2Ya/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 (26)] Ended with exit code 0 [2023-11-29 00:25:55,878 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5006d8ce-3a1a-4930-a55a-c63476efc892/bin/uautomizer-verify-BQ2R08f2Ya/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 [2023-11-29 00:25:55,878 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 35 more)] === [2023-11-29 00:25:55,878 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:25:55,878 INFO L85 PathProgramCache]: Analyzing trace with hash -1066983582, now seen corresponding path program 4 times [2023-11-29 00:25:55,879 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 00:25:55,879 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1138646011] [2023-11-29 00:25:55,879 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-11-29 00:25:55,879 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 [2023-11-29 00:25:55,879 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5006d8ce-3a1a-4930-a55a-c63476efc892/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 00:25:55,879 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5006d8ce-3a1a-4930-a55a-c63476efc892/bin/uautomizer-verify-BQ2R08f2Ya/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) [2023-11-29 00:25:55,880 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5006d8ce-3a1a-4930-a55a-c63476efc892/bin/uautomizer-verify-BQ2R08f2Ya/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 (27)] Waiting until timeout for monitored process [2023-11-29 00:25:56,044 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-11-29 00:25:56,044 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 00:25:56,054 INFO L262 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-29 00:25:56,056 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:25:56,377 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 00:25:56,377 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 63 treesize of output 19 [2023-11-29 00:25:56,533 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 00:25:56,534 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 00:25:59,212 INFO L349 Elim1Store]: treesize reduction 168, result has 22.6 percent of original size [2023-11-29 00:25:59,213 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 89 treesize of output 68 [2023-11-29 00:26:05,631 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 00:26:05,631 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 00:26:05,631 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1138646011] [2023-11-29 00:26:05,632 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1138646011] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 00:26:05,632 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 00:26:05,632 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 16 [2023-11-29 00:26:05,632 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1261105120] [2023-11-29 00:26:05,632 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 00:26:05,632 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-11-29 00:26:05,633 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 00:26:05,633 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-11-29 00:26:05,633 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=177, Unknown=2, NotChecked=0, Total=240 [2023-11-29 00:26:08,419 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.74s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0, 1] [2023-11-29 00:26:11,527 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.09s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2023-11-29 00:26:14,855 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.27s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2023-11-29 00:26:17,924 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2023-11-29 00:26:21,094 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2023-11-29 00:26:23,798 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.69s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2023-11-29 00:26:27,047 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.20s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2023-11-29 00:26:29,802 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.71s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0, 1] [2023-11-29 00:26:32,403 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.59s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2023-11-29 00:26:35,252 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.81s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2023-11-29 00:26:37,949 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.68s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2023-11-29 00:26:41,349 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.34s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2023-11-29 00:26:44,025 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.66s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2023-11-29 00:26:47,064 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2023-11-29 00:26:47,064 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 62 [2023-11-29 00:26:47,064 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 256 places, 480 transitions, 6838 flow. Second operand has 16 states, 16 states have (on average 23.6875) internal successors, (379), 16 states have internal predecessors, (379), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:26:47,065 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 00:26:47,065 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 62 [2023-11-29 00:26:47,065 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 00:26:51,714 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-29 00:26:55,719 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-29 00:27:01,296 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-11-29 00:27:05,300 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-29 00:27:09,304 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 00:27:13,360 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-11-29 00:27:17,627 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 00:27:21,631 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 00:27:43,057 INFO L124 PetriNetUnfolderBase]: 51240/77773 cut-off events. [2023-11-29 00:27:43,057 INFO L125 PetriNetUnfolderBase]: For 805203/805215 co-relation queries the response was YES. [2023-11-29 00:27:44,244 INFO L83 FinitePrefix]: Finished finitePrefix Result has 501339 conditions, 77773 events. 51240/77773 cut-off events. For 805203/805215 co-relation queries the response was YES. Maximal size of possible extension queue 1090. Compared 541976 event pairs, 9727 based on Foata normal form. 4/77767 useless extension candidates. Maximal degree in co-relation 501243. Up to 55528 conditions per place. [2023-11-29 00:27:44,687 INFO L140 encePairwiseOnDemand]: 50/62 looper letters, 512 selfloop transitions, 181 changer transitions 2/704 dead transitions. [2023-11-29 00:27:44,687 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 270 places, 704 transitions, 10513 flow [2023-11-29 00:27:44,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-29 00:27:44,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2023-11-29 00:27:44,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 501 transitions. [2023-11-29 00:27:44,690 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5387096774193548 [2023-11-29 00:27:44,690 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 501 transitions. [2023-11-29 00:27:44,690 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 501 transitions. [2023-11-29 00:27:44,691 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 00:27:44,691 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 501 transitions. [2023-11-29 00:27:44,692 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 33.4) internal successors, (501), 15 states have internal predecessors, (501), 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) [2023-11-29 00:27:44,693 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 62.0) internal successors, (992), 16 states have internal predecessors, (992), 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) [2023-11-29 00:27:44,694 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 62.0) internal successors, (992), 16 states have internal predecessors, (992), 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) [2023-11-29 00:27:44,694 INFO L175 Difference]: Start difference. First operand has 256 places, 480 transitions, 6838 flow. Second operand 15 states and 501 transitions. [2023-11-29 00:27:44,694 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 270 places, 704 transitions, 10513 flow [2023-11-29 00:27:48,517 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 266 places, 704 transitions, 10301 flow, removed 78 selfloop flow, removed 4 redundant places. [2023-11-29 00:27:48,527 INFO L231 Difference]: Finished difference. Result has 269 places, 505 transitions, 7614 flow [2023-11-29 00:27:48,528 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=6629, PETRI_DIFFERENCE_MINUEND_PLACES=252, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=480, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=160, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=309, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=7614, PETRI_PLACES=269, PETRI_TRANSITIONS=505} [2023-11-29 00:27:48,528 INFO L281 CegarLoopForPetriNet]: 61 programPoint places, 208 predicate places. [2023-11-29 00:27:48,528 INFO L495 AbstractCegarLoop]: Abstraction has has 269 places, 505 transitions, 7614 flow [2023-11-29 00:27:48,529 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 23.6875) internal successors, (379), 16 states have internal predecessors, (379), 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) [2023-11-29 00:27:48,529 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 00:27:48,529 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:27:48,534 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5006d8ce-3a1a-4930-a55a-c63476efc892/bin/uautomizer-verify-BQ2R08f2Ya/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 (27)] Forceful destruction successful, exit code 0 [2023-11-29 00:27:48,729 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5006d8ce-3a1a-4930-a55a-c63476efc892/bin/uautomizer-verify-BQ2R08f2Ya/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 [2023-11-29 00:27:48,729 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 35 more)] === [2023-11-29 00:27:48,730 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:27:48,730 INFO L85 PathProgramCache]: Analyzing trace with hash 736671170, now seen corresponding path program 5 times [2023-11-29 00:27:48,730 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 00:27:48,730 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1657960112] [2023-11-29 00:27:48,730 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-11-29 00:27:48,730 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 [2023-11-29 00:27:48,730 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5006d8ce-3a1a-4930-a55a-c63476efc892/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 00:27:48,731 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5006d8ce-3a1a-4930-a55a-c63476efc892/bin/uautomizer-verify-BQ2R08f2Ya/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) [2023-11-29 00:27:48,732 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5006d8ce-3a1a-4930-a55a-c63476efc892/bin/uautomizer-verify-BQ2R08f2Ya/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 (28)] Waiting until timeout for monitored process [2023-11-29 00:27:49,049 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2023-11-29 00:27:49,049 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 00:27:49,061 INFO L262 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 16 conjunts are in the unsatisfiable core [2023-11-29 00:27:49,062 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:27:49,654 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 00:27:49,654 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 51 treesize of output 19 [2023-11-29 00:27:49,869 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 00:27:49,869 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 00:27:53,644 INFO L349 Elim1Store]: treesize reduction 168, result has 22.6 percent of original size [2023-11-29 00:27:53,645 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 91 treesize of output 70