./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/weaver/unroll-4.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version cf1a7837 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8285a3b-7649-4a56-aefa-fedd880cba1f/bin/uautomizer-verify-uTZkv6EMXl/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8285a3b-7649-4a56-aefa-fedd880cba1f/bin/uautomizer-verify-uTZkv6EMXl/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8285a3b-7649-4a56-aefa-fedd880cba1f/bin/uautomizer-verify-uTZkv6EMXl/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8285a3b-7649-4a56-aefa-fedd880cba1f/bin/uautomizer-verify-uTZkv6EMXl/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/weaver/unroll-4.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8285a3b-7649-4a56-aefa-fedd880cba1f/bin/uautomizer-verify-uTZkv6EMXl/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8285a3b-7649-4a56-aefa-fedd880cba1f/bin/uautomizer-verify-uTZkv6EMXl --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 bb07434636f33664cc09ed992a41516efeea5f96121c916fb8904844e76d9fcd --- Real Ultimate output --- This is Ultimate 0.2.3-dev-cf1a783 [2023-11-12 02:24:36,804 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-12 02:24:36,877 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8285a3b-7649-4a56-aefa-fedd880cba1f/bin/uautomizer-verify-uTZkv6EMXl/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2023-11-12 02:24:36,883 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-12 02:24:36,883 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-12 02:24:36,909 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-12 02:24:36,910 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-12 02:24:36,911 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-12 02:24:36,911 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-12 02:24:36,912 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-12 02:24:36,913 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-12 02:24:36,913 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-12 02:24:36,914 INFO L153 SettingsManager]: * Use SBE=true [2023-11-12 02:24:36,914 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-12 02:24:36,915 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-12 02:24:36,916 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-12 02:24:36,916 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-12 02:24:36,916 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-12 02:24:36,917 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-12 02:24:36,917 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-12 02:24:36,918 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-12 02:24:36,918 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-12 02:24:36,919 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-12 02:24:36,919 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-12 02:24:36,919 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-12 02:24:36,920 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-12 02:24:36,920 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-12 02:24:36,921 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-12 02:24:36,921 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-12 02:24:36,921 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 02:24:36,922 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-12 02:24:36,922 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-12 02:24:36,923 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-12 02:24:36,923 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-12 02:24:36,923 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-12 02:24:36,923 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-12 02:24:36,924 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-12 02:24:36,924 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-12 02:24:36,924 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_a8285a3b-7649-4a56-aefa-fedd880cba1f/bin/uautomizer-verify-uTZkv6EMXl/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8285a3b-7649-4a56-aefa-fedd880cba1f/bin/uautomizer-verify-uTZkv6EMXl Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> bb07434636f33664cc09ed992a41516efeea5f96121c916fb8904844e76d9fcd [2023-11-12 02:24:37,227 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-12 02:24:37,262 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-12 02:24:37,265 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-12 02:24:37,266 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-12 02:24:37,267 INFO L274 PluginConnector]: CDTParser initialized [2023-11-12 02:24:37,269 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8285a3b-7649-4a56-aefa-fedd880cba1f/bin/uautomizer-verify-uTZkv6EMXl/../../sv-benchmarks/c/weaver/unroll-4.wvr.c [2023-11-12 02:24:40,617 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-12 02:24:40,818 INFO L384 CDTParser]: Found 1 translation units. [2023-11-12 02:24:40,818 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8285a3b-7649-4a56-aefa-fedd880cba1f/sv-benchmarks/c/weaver/unroll-4.wvr.c [2023-11-12 02:24:40,826 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8285a3b-7649-4a56-aefa-fedd880cba1f/bin/uautomizer-verify-uTZkv6EMXl/data/adbee622a/66f8c992203044979b44a6262b00f4b4/FLAG461f1d000 [2023-11-12 02:24:40,841 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8285a3b-7649-4a56-aefa-fedd880cba1f/bin/uautomizer-verify-uTZkv6EMXl/data/adbee622a/66f8c992203044979b44a6262b00f4b4 [2023-11-12 02:24:40,844 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-12 02:24:40,846 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-12 02:24:40,847 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-12 02:24:40,848 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-12 02:24:40,853 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-12 02:24:40,854 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 02:24:40" (1/1) ... [2023-11-12 02:24:40,855 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@56fc86fd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:24:40, skipping insertion in model container [2023-11-12 02:24:40,856 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 02:24:40" (1/1) ... [2023-11-12 02:24:40,882 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-12 02:24:41,069 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 02:24:41,082 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) [2023-11-12 02:24:41,082 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@3fed06a7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:24:41, skipping insertion in model container [2023-11-12 02:24:41,083 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-12 02:24:41,083 INFO L186 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2023-11-12 02:24:41,085 INFO L158 Benchmark]: Toolchain (without parser) took 238.39ms. Allocated memory is still 146.8MB. Free memory was 103.8MB in the beginning and 93.7MB in the end (delta: 10.1MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-11-12 02:24:41,086 INFO L158 Benchmark]: CDTParser took 0.33ms. Allocated memory is still 96.5MB. Free memory is still 47.6MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-12 02:24:41,087 INFO L158 Benchmark]: CACSL2BoogieTranslator took 235.68ms. Allocated memory is still 146.8MB. Free memory was 103.5MB in the beginning and 93.7MB in the end (delta: 9.7MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-11-12 02:24:41,088 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.33ms. Allocated memory is still 96.5MB. Free memory is still 47.6MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 235.68ms. Allocated memory is still 146.8MB. Free memory was 103.5MB in the beginning and 93.7MB in the end (delta: 9.7MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 103]: 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-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8285a3b-7649-4a56-aefa-fedd880cba1f/bin/uautomizer-verify-uTZkv6EMXl/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8285a3b-7649-4a56-aefa-fedd880cba1f/bin/uautomizer-verify-uTZkv6EMXl/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8285a3b-7649-4a56-aefa-fedd880cba1f/bin/uautomizer-verify-uTZkv6EMXl/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8285a3b-7649-4a56-aefa-fedd880cba1f/bin/uautomizer-verify-uTZkv6EMXl/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/weaver/unroll-4.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8285a3b-7649-4a56-aefa-fedd880cba1f/bin/uautomizer-verify-uTZkv6EMXl/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8285a3b-7649-4a56-aefa-fedd880cba1f/bin/uautomizer-verify-uTZkv6EMXl --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 bb07434636f33664cc09ed992a41516efeea5f96121c916fb8904844e76d9fcd --- Real Ultimate output --- This is Ultimate 0.2.3-dev-cf1a783 [2023-11-12 02:24:43,738 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-12 02:24:43,860 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8285a3b-7649-4a56-aefa-fedd880cba1f/bin/uautomizer-verify-uTZkv6EMXl/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2023-11-12 02:24:43,869 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-12 02:24:43,870 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-12 02:24:43,912 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-12 02:24:43,913 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-12 02:24:43,914 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-12 02:24:43,914 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-12 02:24:43,915 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-12 02:24:43,916 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-12 02:24:43,916 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-12 02:24:43,917 INFO L153 SettingsManager]: * Use SBE=true [2023-11-12 02:24:43,917 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-12 02:24:43,918 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-12 02:24:43,918 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-12 02:24:43,919 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-12 02:24:43,919 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-12 02:24:43,919 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-12 02:24:43,920 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-12 02:24:43,920 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-12 02:24:43,924 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-12 02:24:43,925 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-12 02:24:43,925 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-11-12 02:24:43,925 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-11-12 02:24:43,926 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-12 02:24:43,926 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-12 02:24:43,927 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-12 02:24:43,927 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-12 02:24:43,928 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-12 02:24:43,929 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-12 02:24:43,929 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 02:24:43,930 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-12 02:24:43,930 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-12 02:24:43,930 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-11-12 02:24:43,931 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-11-12 02:24:43,931 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-12 02:24:43,931 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-12 02:24:43,931 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-12 02:24:43,932 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-11-12 02:24:43,933 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-12 02:24:43,933 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_a8285a3b-7649-4a56-aefa-fedd880cba1f/bin/uautomizer-verify-uTZkv6EMXl/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8285a3b-7649-4a56-aefa-fedd880cba1f/bin/uautomizer-verify-uTZkv6EMXl Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> bb07434636f33664cc09ed992a41516efeea5f96121c916fb8904844e76d9fcd [2023-11-12 02:24:44,335 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-12 02:24:44,366 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-12 02:24:44,369 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-12 02:24:44,370 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-12 02:24:44,371 INFO L274 PluginConnector]: CDTParser initialized [2023-11-12 02:24:44,372 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8285a3b-7649-4a56-aefa-fedd880cba1f/bin/uautomizer-verify-uTZkv6EMXl/../../sv-benchmarks/c/weaver/unroll-4.wvr.c [2023-11-12 02:24:47,592 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-12 02:24:47,852 INFO L384 CDTParser]: Found 1 translation units. [2023-11-12 02:24:47,853 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8285a3b-7649-4a56-aefa-fedd880cba1f/sv-benchmarks/c/weaver/unroll-4.wvr.c [2023-11-12 02:24:47,861 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8285a3b-7649-4a56-aefa-fedd880cba1f/bin/uautomizer-verify-uTZkv6EMXl/data/b6b8f5bad/c711d0a840f94110ae4669b26eecb7e0/FLAG8a3a1b709 [2023-11-12 02:24:47,877 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8285a3b-7649-4a56-aefa-fedd880cba1f/bin/uautomizer-verify-uTZkv6EMXl/data/b6b8f5bad/c711d0a840f94110ae4669b26eecb7e0 [2023-11-12 02:24:47,880 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-12 02:24:47,882 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-12 02:24:47,884 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-12 02:24:47,884 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-12 02:24:47,890 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-12 02:24:47,891 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 02:24:47" (1/1) ... [2023-11-12 02:24:47,892 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@53338876 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:24:47, skipping insertion in model container [2023-11-12 02:24:47,893 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 02:24:47" (1/1) ... [2023-11-12 02:24:47,934 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-12 02:24:48,232 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 02:24:48,259 INFO L199 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2023-11-12 02:24:48,272 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-12 02:24:48,305 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 02:24:48,315 INFO L202 MainTranslator]: Completed pre-run [2023-11-12 02:24:48,368 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 02:24:48,391 INFO L206 MainTranslator]: Completed translation [2023-11-12 02:24:48,392 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:24:48 WrapperNode [2023-11-12 02:24:48,392 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-12 02:24:48,394 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-12 02:24:48,394 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-12 02:24:48,395 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-12 02:24:48,403 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:24:48" (1/1) ... [2023-11-12 02:24:48,429 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:24:48" (1/1) ... [2023-11-12 02:24:48,474 INFO L138 Inliner]: procedures = 26, calls = 37, calls flagged for inlining = 14, calls inlined = 14, statements flattened = 159 [2023-11-12 02:24:48,475 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-12 02:24:48,477 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-12 02:24:48,477 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-12 02:24:48,477 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-12 02:24:48,487 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:24:48" (1/1) ... [2023-11-12 02:24:48,487 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:24:48" (1/1) ... [2023-11-12 02:24:48,510 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:24:48" (1/1) ... [2023-11-12 02:24:48,510 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:24:48" (1/1) ... [2023-11-12 02:24:48,537 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:24:48" (1/1) ... [2023-11-12 02:24:48,541 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:24:48" (1/1) ... [2023-11-12 02:24:48,544 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:24:48" (1/1) ... [2023-11-12 02:24:48,561 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:24:48" (1/1) ... [2023-11-12 02:24:48,565 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-12 02:24:48,566 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-12 02:24:48,566 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-12 02:24:48,566 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-12 02:24:48,567 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:24:48" (1/1) ... [2023-11-12 02:24:48,574 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 02:24:48,596 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8285a3b-7649-4a56-aefa-fedd880cba1f/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:24:48,610 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8285a3b-7649-4a56-aefa-fedd880cba1f/bin/uautomizer-verify-uTZkv6EMXl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-12 02:24:48,665 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8285a3b-7649-4a56-aefa-fedd880cba1f/bin/uautomizer-verify-uTZkv6EMXl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-12 02:24:48,679 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-12 02:24:48,679 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2023-11-12 02:24:48,679 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-12 02:24:48,679 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2023-11-12 02:24:48,680 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-11-12 02:24:48,680 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-11-12 02:24:48,680 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-11-12 02:24:48,680 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-11-12 02:24:48,680 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-12 02:24:48,681 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-12 02:24:48,681 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-12 02:24:48,683 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-12 02:24:48,683 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2023-11-12 02:24:48,685 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-12 02:24:48,852 INFO L236 CfgBuilder]: Building ICFG [2023-11-12 02:24:48,854 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-12 02:24:49,475 INFO L277 CfgBuilder]: Performing block encoding [2023-11-12 02:24:49,487 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-12 02:24:49,487 INFO L302 CfgBuilder]: Removed 3 assume(true) statements. [2023-11-12 02:24:49,490 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 02:24:49 BoogieIcfgContainer [2023-11-12 02:24:49,491 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-12 02:24:49,493 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-12 02:24:49,494 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-12 02:24:49,498 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-12 02:24:49,498 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 02:24:47" (1/3) ... [2023-11-12 02:24:49,499 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@17f2f997 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 02:24:49, skipping insertion in model container [2023-11-12 02:24:49,499 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:24:48" (2/3) ... [2023-11-12 02:24:49,500 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@17f2f997 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 02:24:49, skipping insertion in model container [2023-11-12 02:24:49,500 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 02:24:49" (3/3) ... [2023-11-12 02:24:49,501 INFO L112 eAbstractionObserver]: Analyzing ICFG unroll-4.wvr.c [2023-11-12 02:24:49,524 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-12 02:24:49,524 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 22 error locations. [2023-11-12 02:24:49,524 INFO L521 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-12 02:24:49,704 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-11-12 02:24:49,762 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 217 places, 226 transitions, 466 flow [2023-11-12 02:24:49,926 INFO L124 PetriNetUnfolderBase]: 16/224 cut-off events. [2023-11-12 02:24:49,926 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-12 02:24:49,935 INFO L83 FinitePrefix]: Finished finitePrefix Result has 233 conditions, 224 events. 16/224 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 284 event pairs, 0 based on Foata normal form. 0/186 useless extension candidates. Maximal degree in co-relation 118. Up to 2 conditions per place. [2023-11-12 02:24:49,935 INFO L82 GeneralOperation]: Start removeDead. Operand has 217 places, 226 transitions, 466 flow [2023-11-12 02:24:49,950 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 210 places, 219 transitions, 450 flow [2023-11-12 02:24:49,955 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-12 02:24:49,970 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 210 places, 219 transitions, 450 flow [2023-11-12 02:24:49,973 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 210 places, 219 transitions, 450 flow [2023-11-12 02:24:49,973 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 210 places, 219 transitions, 450 flow [2023-11-12 02:24:50,037 INFO L124 PetriNetUnfolderBase]: 16/219 cut-off events. [2023-11-12 02:24:50,037 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-12 02:24:50,039 INFO L83 FinitePrefix]: Finished finitePrefix Result has 228 conditions, 219 events. 16/219 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 274 event pairs, 0 based on Foata normal form. 0/182 useless extension candidates. Maximal degree in co-relation 118. Up to 2 conditions per place. [2023-11-12 02:24:50,048 INFO L119 LiptonReduction]: Number of co-enabled transitions 5284 [2023-11-12 02:25:23,736 INFO L134 LiptonReduction]: Checked pairs total: 5628 [2023-11-12 02:25:23,736 INFO L136 LiptonReduction]: Total number of compositions: 265 [2023-11-12 02:25:23,754 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-12 02:25:23,762 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;@612eb9f8, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-12 02:25:23,762 INFO L358 AbstractCegarLoop]: Starting to check reachability of 34 error locations. [2023-11-12 02:25:23,765 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-12 02:25:23,766 INFO L124 PetriNetUnfolderBase]: 1/2 cut-off events. [2023-11-12 02:25:23,766 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-12 02:25:23,766 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:25:23,767 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-11-12 02:25:23,768 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 31 more)] === [2023-11-12 02:25:23,774 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:25:23,774 INFO L85 PathProgramCache]: Analyzing trace with hash 29093, now seen corresponding path program 1 times [2023-11-12 02:25:23,788 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-12 02:25:23,789 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1865536079] [2023-11-12 02:25:23,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:25:23,789 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 [2023-11-12 02:25:23,790 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8285a3b-7649-4a56-aefa-fedd880cba1f/bin/uautomizer-verify-uTZkv6EMXl/mathsat [2023-11-12 02:25:23,792 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8285a3b-7649-4a56-aefa-fedd880cba1f/bin/uautomizer-verify-uTZkv6EMXl/mathsat -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) [2023-11-12 02:25:23,800 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8285a3b-7649-4a56-aefa-fedd880cba1f/bin/uautomizer-verify-uTZkv6EMXl/mathsat -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 [2023-11-12 02:25:23,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:25:23,922 INFO L262 TraceCheckSpWp]: Trace formula consists of 39 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-12 02:25:23,929 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:25:24,133 INFO L351 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 [2023-11-12 02:25:24,172 INFO L351 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 [2023-11-12 02:25:24,205 INFO L351 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 [2023-11-12 02:25:24,231 INFO L351 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 [2023-11-12 02:25:24,259 INFO L351 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 [2023-11-12 02:25:24,285 INFO L351 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 [2023-11-12 02:25:24,338 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:25:24,339 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-12 02:25:24,340 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-12 02:25:24,340 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1865536079] [2023-11-12 02:25:24,341 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1865536079] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:25:24,341 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:25:24,342 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-12 02:25:24,344 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [620102817] [2023-11-12 02:25:24,345 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:25:24,355 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 02:25:24,362 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-12 02:25:24,388 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 02:25:24,389 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:25:24,768 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 201 out of 491 [2023-11-12 02:25:24,773 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 38 transitions, 88 flow. Second operand has 3 states, 3 states have (on average 201.66666666666666) internal successors, (605), 3 states have internal predecessors, (605), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:25:24,773 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:25:24,774 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 201 of 491 [2023-11-12 02:25:24,775 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:25:25,344 INFO L124 PetriNetUnfolderBase]: 337/559 cut-off events. [2023-11-12 02:25:25,344 INFO L125 PetriNetUnfolderBase]: For 24/24 co-relation queries the response was YES. [2023-11-12 02:25:25,346 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1143 conditions, 559 events. 337/559 cut-off events. For 24/24 co-relation queries the response was YES. Maximal size of possible extension queue 80. Compared 2212 event pairs, 273 based on Foata normal form. 0/192 useless extension candidates. Maximal degree in co-relation 970. Up to 558 conditions per place. [2023-11-12 02:25:25,352 INFO L140 encePairwiseOnDemand]: 481/491 looper letters, 34 selfloop transitions, 5 changer transitions 0/39 dead transitions. [2023-11-12 02:25:25,353 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 39 transitions, 168 flow [2023-11-12 02:25:25,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 02:25:25,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-12 02:25:25,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 647 transitions. [2023-11-12 02:25:25,384 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4392396469789545 [2023-11-12 02:25:25,385 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 647 transitions. [2023-11-12 02:25:25,386 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 647 transitions. [2023-11-12 02:25:25,391 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:25:25,394 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 647 transitions. [2023-11-12 02:25:25,402 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 215.66666666666666) internal successors, (647), 3 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:25:25,413 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 491.0) internal successors, (1964), 4 states have internal predecessors, (1964), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:25:25,415 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 491.0) internal successors, (1964), 4 states have internal predecessors, (1964), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:25:25,417 INFO L175 Difference]: Start difference. First operand has 42 places, 38 transitions, 88 flow. Second operand 3 states and 647 transitions. [2023-11-12 02:25:25,419 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 39 transitions, 168 flow [2023-11-12 02:25:25,423 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 39 transitions, 160 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-11-12 02:25:25,425 INFO L231 Difference]: Finished difference. Result has 37 places, 38 transitions, 105 flow [2023-11-12 02:25:25,428 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=491, PETRI_DIFFERENCE_MINUEND_FLOW=72, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=105, PETRI_PLACES=37, PETRI_TRANSITIONS=38} [2023-11-12 02:25:25,432 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, -5 predicate places. [2023-11-12 02:25:25,432 INFO L495 AbstractCegarLoop]: Abstraction has has 37 places, 38 transitions, 105 flow [2023-11-12 02:25:25,433 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 201.66666666666666) internal successors, (605), 3 states have internal predecessors, (605), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:25:25,433 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:25:25,434 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-11-12 02:25:25,448 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8285a3b-7649-4a56-aefa-fedd880cba1f/bin/uautomizer-verify-uTZkv6EMXl/mathsat -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 [2023-11-12 02:25:25,645 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8285a3b-7649-4a56-aefa-fedd880cba1f/bin/uautomizer-verify-uTZkv6EMXl/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-12 02:25:25,646 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 31 more)] === [2023-11-12 02:25:25,646 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:25:25,646 INFO L85 PathProgramCache]: Analyzing trace with hash 905044, now seen corresponding path program 1 times [2023-11-12 02:25:25,647 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-12 02:25:25,647 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1310690488] [2023-11-12 02:25:25,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:25:25,648 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 [2023-11-12 02:25:25,648 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8285a3b-7649-4a56-aefa-fedd880cba1f/bin/uautomizer-verify-uTZkv6EMXl/mathsat [2023-11-12 02:25:25,649 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8285a3b-7649-4a56-aefa-fedd880cba1f/bin/uautomizer-verify-uTZkv6EMXl/mathsat -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) [2023-11-12 02:25:25,659 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8285a3b-7649-4a56-aefa-fedd880cba1f/bin/uautomizer-verify-uTZkv6EMXl/mathsat -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 [2023-11-12 02:25:25,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:25:25,749 INFO L262 TraceCheckSpWp]: Trace formula consists of 57 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-12 02:25:25,751 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:25:25,793 INFO L322 Elim1Store]: treesize reduction 37, result has 15.9 percent of original size [2023-11-12 02:25:25,794 INFO L351 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 [2023-11-12 02:25:25,827 INFO L322 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2023-11-12 02:25:25,828 INFO L351 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 [2023-11-12 02:25:25,911 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-12 02:25:25,911 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-12 02:25:25,911 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-12 02:25:25,912 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1310690488] [2023-11-12 02:25:25,913 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1310690488] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:25:25,913 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:25:25,913 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-12 02:25:25,913 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [366287249] [2023-11-12 02:25:25,913 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:25:25,914 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 02:25:25,915 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-12 02:25:25,915 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 02:25:25,915 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:25:26,166 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 198 out of 491 [2023-11-12 02:25:26,167 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 38 transitions, 105 flow. Second operand has 3 states, 3 states have (on average 199.0) internal successors, (597), 3 states have internal predecessors, (597), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:25:26,167 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:25:26,167 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 198 of 491 [2023-11-12 02:25:26,167 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:25:26,687 INFO L124 PetriNetUnfolderBase]: 256/437 cut-off events. [2023-11-12 02:25:26,698 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2023-11-12 02:25:26,699 INFO L83 FinitePrefix]: Finished finitePrefix Result has 895 conditions, 437 events. 256/437 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 1632 event pairs, 206 based on Foata normal form. 0/168 useless extension candidates. Maximal degree in co-relation 860. Up to 437 conditions per place. [2023-11-12 02:25:26,706 INFO L140 encePairwiseOnDemand]: 488/491 looper letters, 34 selfloop transitions, 1 changer transitions 0/35 dead transitions. [2023-11-12 02:25:26,706 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 35 transitions, 164 flow [2023-11-12 02:25:26,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 02:25:26,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-12 02:25:26,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 628 transitions. [2023-11-12 02:25:26,710 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4263408010862186 [2023-11-12 02:25:26,711 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 628 transitions. [2023-11-12 02:25:26,711 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 628 transitions. [2023-11-12 02:25:26,711 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:25:26,712 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 628 transitions. [2023-11-12 02:25:26,714 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 209.33333333333334) internal successors, (628), 3 states have internal predecessors, (628), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:25:26,719 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 491.0) internal successors, (1964), 4 states have internal predecessors, (1964), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:25:26,721 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 491.0) internal successors, (1964), 4 states have internal predecessors, (1964), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:25:26,721 INFO L175 Difference]: Start difference. First operand has 37 places, 38 transitions, 105 flow. Second operand 3 states and 628 transitions. [2023-11-12 02:25:26,723 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 35 transitions, 164 flow [2023-11-12 02:25:26,724 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 35 transitions, 160 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-12 02:25:26,725 INFO L231 Difference]: Finished difference. Result has 36 places, 35 transitions, 92 flow [2023-11-12 02:25:26,726 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=491, PETRI_DIFFERENCE_MINUEND_FLOW=90, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=92, PETRI_PLACES=36, PETRI_TRANSITIONS=35} [2023-11-12 02:25:26,727 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, -6 predicate places. [2023-11-12 02:25:26,727 INFO L495 AbstractCegarLoop]: Abstraction has has 36 places, 35 transitions, 92 flow [2023-11-12 02:25:26,728 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 199.0) internal successors, (597), 3 states have internal predecessors, (597), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:25:26,728 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:25:26,728 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-11-12 02:25:26,747 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8285a3b-7649-4a56-aefa-fedd880cba1f/bin/uautomizer-verify-uTZkv6EMXl/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2023-11-12 02:25:26,941 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8285a3b-7649-4a56-aefa-fedd880cba1f/bin/uautomizer-verify-uTZkv6EMXl/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-12 02:25:26,942 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 31 more)] === [2023-11-12 02:25:26,942 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:25:26,942 INFO L85 PathProgramCache]: Analyzing trace with hash 29092, now seen corresponding path program 1 times [2023-11-12 02:25:26,943 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-12 02:25:26,943 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1073207086] [2023-11-12 02:25:26,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:25:26,943 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 [2023-11-12 02:25:26,943 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8285a3b-7649-4a56-aefa-fedd880cba1f/bin/uautomizer-verify-uTZkv6EMXl/mathsat [2023-11-12 02:25:26,944 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8285a3b-7649-4a56-aefa-fedd880cba1f/bin/uautomizer-verify-uTZkv6EMXl/mathsat -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) [2023-11-12 02:25:26,950 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8285a3b-7649-4a56-aefa-fedd880cba1f/bin/uautomizer-verify-uTZkv6EMXl/mathsat -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 [2023-11-12 02:25:27,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:25:27,035 INFO L262 TraceCheckSpWp]: Trace formula consists of 39 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-12 02:25:27,037 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:25:27,046 INFO L351 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 [2023-11-12 02:25:27,058 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-12 02:25:27,059 INFO L351 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 [2023-11-12 02:25:27,081 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-12 02:25:27,082 INFO L351 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 [2023-11-12 02:25:27,092 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-12 02:25:27,093 INFO L351 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 [2023-11-12 02:25:27,104 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-12 02:25:27,105 INFO L351 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 [2023-11-12 02:25:27,111 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-12 02:25:27,111 INFO L351 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 [2023-11-12 02:25:27,117 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:25:27,117 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-12 02:25:27,117 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-12 02:25:27,118 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1073207086] [2023-11-12 02:25:27,118 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1073207086] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:25:27,118 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:25:27,118 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-12 02:25:27,119 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [301101081] [2023-11-12 02:25:27,119 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:25:27,119 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 02:25:27,119 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-12 02:25:27,120 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 02:25:27,120 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:25:27,301 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 201 out of 491 [2023-11-12 02:25:27,303 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 35 transitions, 92 flow. Second operand has 3 states, 3 states have (on average 201.66666666666666) internal successors, (605), 3 states have internal predecessors, (605), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:25:27,303 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:25:27,303 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 201 of 491 [2023-11-12 02:25:27,303 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:25:27,728 INFO L124 PetriNetUnfolderBase]: 256/435 cut-off events. [2023-11-12 02:25:27,728 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2023-11-12 02:25:27,729 INFO L83 FinitePrefix]: Finished finitePrefix Result has 889 conditions, 435 events. 256/435 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 58. Compared 1641 event pairs, 206 based on Foata normal form. 2/168 useless extension candidates. Maximal degree in co-relation 881. Up to 432 conditions per place. [2023-11-12 02:25:27,733 INFO L140 encePairwiseOnDemand]: 487/491 looper letters, 29 selfloop transitions, 5 changer transitions 0/34 dead transitions. [2023-11-12 02:25:27,733 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 34 transitions, 158 flow [2023-11-12 02:25:27,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 02:25:27,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-12 02:25:27,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 635 transitions. [2023-11-12 02:25:27,739 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43109300746775286 [2023-11-12 02:25:27,739 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 635 transitions. [2023-11-12 02:25:27,739 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 635 transitions. [2023-11-12 02:25:27,740 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:25:27,740 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 635 transitions. [2023-11-12 02:25:27,743 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 211.66666666666666) internal successors, (635), 3 states have internal predecessors, (635), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:25:27,748 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 491.0) internal successors, (1964), 4 states have internal predecessors, (1964), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:25:27,750 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 491.0) internal successors, (1964), 4 states have internal predecessors, (1964), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:25:27,751 INFO L175 Difference]: Start difference. First operand has 36 places, 35 transitions, 92 flow. Second operand 3 states and 635 transitions. [2023-11-12 02:25:27,751 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 34 transitions, 158 flow [2023-11-12 02:25:27,752 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 34 transitions, 155 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-11-12 02:25:27,753 INFO L231 Difference]: Finished difference. Result has 36 places, 34 transitions, 97 flow [2023-11-12 02:25:27,753 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=491, PETRI_DIFFERENCE_MINUEND_FLOW=87, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=97, PETRI_PLACES=36, PETRI_TRANSITIONS=34} [2023-11-12 02:25:27,755 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, -6 predicate places. [2023-11-12 02:25:27,755 INFO L495 AbstractCegarLoop]: Abstraction has has 36 places, 34 transitions, 97 flow [2023-11-12 02:25:27,756 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 201.66666666666666) internal successors, (605), 3 states have internal predecessors, (605), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:25:27,756 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:25:27,756 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-11-12 02:25:27,776 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8285a3b-7649-4a56-aefa-fedd880cba1f/bin/uautomizer-verify-uTZkv6EMXl/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2023-11-12 02:25:27,969 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8285a3b-7649-4a56-aefa-fedd880cba1f/bin/uautomizer-verify-uTZkv6EMXl/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-12 02:25:27,970 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 31 more)] === [2023-11-12 02:25:27,970 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:25:27,970 INFO L85 PathProgramCache]: Analyzing trace with hash 905043, now seen corresponding path program 1 times [2023-11-12 02:25:27,971 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-12 02:25:27,971 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [42994860] [2023-11-12 02:25:27,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:25:27,971 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 [2023-11-12 02:25:27,971 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8285a3b-7649-4a56-aefa-fedd880cba1f/bin/uautomizer-verify-uTZkv6EMXl/mathsat [2023-11-12 02:25:27,972 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8285a3b-7649-4a56-aefa-fedd880cba1f/bin/uautomizer-verify-uTZkv6EMXl/mathsat -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) [2023-11-12 02:25:27,978 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8285a3b-7649-4a56-aefa-fedd880cba1f/bin/uautomizer-verify-uTZkv6EMXl/mathsat -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 [2023-11-12 02:25:28,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:25:28,058 INFO L262 TraceCheckSpWp]: Trace formula consists of 57 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-12 02:25:28,060 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:25:28,089 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-12 02:25:28,125 INFO L322 Elim1Store]: treesize reduction 13, result has 40.9 percent of original size [2023-11-12 02:25:28,125 INFO L351 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 16 treesize of output 17 [2023-11-12 02:25:28,137 INFO L351 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 [2023-11-12 02:25:28,173 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-12 02:25:28,179 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-12 02:25:28,184 INFO L351 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 13 [2023-11-12 02:25:28,192 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-12 02:25:28,196 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 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 [2023-11-12 02:25:28,347 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:25:28,348 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-12 02:25:28,546 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:25:28,547 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-12 02:25:28,547 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [42994860] [2023-11-12 02:25:28,547 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [42994860] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-12 02:25:28,547 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-12 02:25:28,547 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2] total 4 [2023-11-12 02:25:28,547 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1640315809] [2023-11-12 02:25:28,548 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-12 02:25:28,548 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-12 02:25:28,548 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-12 02:25:28,549 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-12 02:25:28,549 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-11-12 02:25:29,901 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 190 out of 491 [2023-11-12 02:25:29,909 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 34 transitions, 97 flow. Second operand has 6 states, 6 states have (on average 191.0) internal successors, (1146), 6 states have internal predecessors, (1146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:25:29,909 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:25:29,909 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 190 of 491 [2023-11-12 02:25:29,909 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:25:31,021 INFO L124 PetriNetUnfolderBase]: 259/443 cut-off events. [2023-11-12 02:25:31,021 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2023-11-12 02:25:31,022 INFO L83 FinitePrefix]: Finished finitePrefix Result has 919 conditions, 443 events. 259/443 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 58. Compared 1689 event pairs, 206 based on Foata normal form. 0/174 useless extension candidates. Maximal degree in co-relation 910. Up to 434 conditions per place. [2023-11-12 02:25:31,025 INFO L140 encePairwiseOnDemand]: 486/491 looper letters, 32 selfloop transitions, 10 changer transitions 0/42 dead transitions. [2023-11-12 02:25:31,025 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 42 transitions, 217 flow [2023-11-12 02:25:31,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-12 02:25:31,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-12 02:25:31,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1186 transitions. [2023-11-12 02:25:31,032 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4025797691785472 [2023-11-12 02:25:31,032 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1186 transitions. [2023-11-12 02:25:31,032 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1186 transitions. [2023-11-12 02:25:31,034 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:25:31,034 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1186 transitions. [2023-11-12 02:25:31,038 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 197.66666666666666) internal successors, (1186), 6 states have internal predecessors, (1186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:25:31,075 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 491.0) internal successors, (3437), 7 states have internal predecessors, (3437), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:25:31,078 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 491.0) internal successors, (3437), 7 states have internal predecessors, (3437), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:25:31,078 INFO L175 Difference]: Start difference. First operand has 36 places, 34 transitions, 97 flow. Second operand 6 states and 1186 transitions. [2023-11-12 02:25:31,078 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 42 transitions, 217 flow [2023-11-12 02:25:31,080 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 42 transitions, 203 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-12 02:25:31,081 INFO L231 Difference]: Finished difference. Result has 43 places, 40 transitions, 160 flow [2023-11-12 02:25:31,082 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=491, PETRI_DIFFERENCE_MINUEND_FLOW=83, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=160, PETRI_PLACES=43, PETRI_TRANSITIONS=40} [2023-11-12 02:25:31,083 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 1 predicate places. [2023-11-12 02:25:31,083 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 40 transitions, 160 flow [2023-11-12 02:25:31,085 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 191.0) internal successors, (1146), 6 states have internal predecessors, (1146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:25:31,085 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:25:31,085 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-11-12 02:25:31,106 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8285a3b-7649-4a56-aefa-fedd880cba1f/bin/uautomizer-verify-uTZkv6EMXl/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2023-11-12 02:25:31,297 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8285a3b-7649-4a56-aefa-fedd880cba1f/bin/uautomizer-verify-uTZkv6EMXl/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-12 02:25:31,297 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 31 more)] === [2023-11-12 02:25:31,298 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:25:31,298 INFO L85 PathProgramCache]: Analyzing trace with hash 904936, now seen corresponding path program 1 times [2023-11-12 02:25:31,298 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-12 02:25:31,299 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1669060571] [2023-11-12 02:25:31,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:25:31,300 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 [2023-11-12 02:25:31,301 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8285a3b-7649-4a56-aefa-fedd880cba1f/bin/uautomizer-verify-uTZkv6EMXl/mathsat [2023-11-12 02:25:31,302 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8285a3b-7649-4a56-aefa-fedd880cba1f/bin/uautomizer-verify-uTZkv6EMXl/mathsat -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) [2023-11-12 02:25:31,307 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8285a3b-7649-4a56-aefa-fedd880cba1f/bin/uautomizer-verify-uTZkv6EMXl/mathsat -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 [2023-11-12 02:25:31,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:25:31,374 INFO L262 TraceCheckSpWp]: Trace formula consists of 50 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-12 02:25:31,376 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:25:31,410 INFO L351 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 [2023-11-12 02:25:31,434 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-12 02:25:31,439 INFO L351 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 [2023-11-12 02:25:31,451 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-12 02:25:31,455 INFO L351 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 [2023-11-12 02:25:31,479 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-12 02:25:31,481 INFO L351 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 [2023-11-12 02:25:31,492 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-12 02:25:31,493 INFO L351 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 [2023-11-12 02:25:31,506 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-12 02:25:31,507 INFO L351 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 [2023-11-12 02:25:31,582 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:25:31,582 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-12 02:25:31,877 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:25:31,877 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-12 02:25:31,877 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1669060571] [2023-11-12 02:25:31,878 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1669060571] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-12 02:25:31,878 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-12 02:25:31,878 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2] total 4 [2023-11-12 02:25:31,878 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1093889292] [2023-11-12 02:25:31,878 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-12 02:25:31,879 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-12 02:25:31,879 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-12 02:25:31,879 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-12 02:25:31,879 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-11-12 02:25:32,931 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 195 out of 491 [2023-11-12 02:25:32,933 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 40 transitions, 160 flow. Second operand has 6 states, 6 states have (on average 196.0) internal successors, (1176), 6 states have internal predecessors, (1176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:25:32,933 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:25:32,933 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 195 of 491 [2023-11-12 02:25:32,933 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand