./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/weaver/popl20-send-receive.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version cf1a7837 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71e4393d-ba83-42a0-84cb-536412cf3245/bin/uautomizer-verify-uTZkv6EMXl/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71e4393d-ba83-42a0-84cb-536412cf3245/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_71e4393d-ba83-42a0-84cb-536412cf3245/bin/uautomizer-verify-uTZkv6EMXl/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71e4393d-ba83-42a0-84cb-536412cf3245/bin/uautomizer-verify-uTZkv6EMXl/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/weaver/popl20-send-receive.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71e4393d-ba83-42a0-84cb-536412cf3245/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_71e4393d-ba83-42a0-84cb-536412cf3245/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 4eda2bf92bccdcc8638b67653fb7fdefc015ff9c815b317ad1009deb61d04585 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-cf1a783 [2023-11-12 02:12:43,232 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-12 02:12:43,331 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71e4393d-ba83-42a0-84cb-536412cf3245/bin/uautomizer-verify-uTZkv6EMXl/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2023-11-12 02:12:43,336 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-12 02:12:43,337 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-12 02:12:43,362 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-12 02:12:43,362 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-12 02:12:43,363 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-12 02:12:43,364 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-12 02:12:43,365 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-12 02:12:43,366 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-12 02:12:43,366 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-12 02:12:43,367 INFO L153 SettingsManager]: * Use SBE=true [2023-11-12 02:12:43,368 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-12 02:12:43,368 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-12 02:12:43,369 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-12 02:12:43,369 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-12 02:12:43,370 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-12 02:12:43,371 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-12 02:12:43,371 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-12 02:12:43,372 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-12 02:12:43,378 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-12 02:12:43,379 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-12 02:12:43,380 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-12 02:12:43,380 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-12 02:12:43,381 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-12 02:12:43,381 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-12 02:12:43,382 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-12 02:12:43,382 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-12 02:12:43,383 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 02:12:43,384 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-12 02:12:43,384 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-12 02:12:43,385 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-12 02:12:43,385 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-12 02:12:43,385 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-12 02:12:43,386 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-12 02:12:43,386 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-12 02:12:43,386 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-12 02:12:43,386 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_71e4393d-ba83-42a0-84cb-536412cf3245/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71e4393d-ba83-42a0-84cb-536412cf3245/bin/uautomizer-verify-uTZkv6EMXl Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4eda2bf92bccdcc8638b67653fb7fdefc015ff9c815b317ad1009deb61d04585 [2023-11-12 02:12:43,679 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-12 02:12:43,712 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-12 02:12:43,715 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-12 02:12:43,716 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-12 02:12:43,717 INFO L274 PluginConnector]: CDTParser initialized [2023-11-12 02:12:43,718 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71e4393d-ba83-42a0-84cb-536412cf3245/bin/uautomizer-verify-uTZkv6EMXl/../../sv-benchmarks/c/weaver/popl20-send-receive.wvr.c [2023-11-12 02:12:46,820 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-12 02:12:47,045 INFO L384 CDTParser]: Found 1 translation units. [2023-11-12 02:12:47,045 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71e4393d-ba83-42a0-84cb-536412cf3245/sv-benchmarks/c/weaver/popl20-send-receive.wvr.c [2023-11-12 02:12:47,055 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71e4393d-ba83-42a0-84cb-536412cf3245/bin/uautomizer-verify-uTZkv6EMXl/data/cfe066641/3c9b220f53ba4873a38afe466d56aad8/FLAG70a5e1739 [2023-11-12 02:12:47,073 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71e4393d-ba83-42a0-84cb-536412cf3245/bin/uautomizer-verify-uTZkv6EMXl/data/cfe066641/3c9b220f53ba4873a38afe466d56aad8 [2023-11-12 02:12:47,077 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-12 02:12:47,079 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-12 02:12:47,080 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-12 02:12:47,081 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-12 02:12:47,087 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-12 02:12:47,089 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 02:12:47" (1/1) ... [2023-11-12 02:12:47,091 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@357ec706 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:12:47, skipping insertion in model container [2023-11-12 02:12:47,091 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 02:12:47" (1/1) ... [2023-11-12 02:12:47,120 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-12 02:12:47,314 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 02:12:47,327 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 02:12:47,328 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@4a0510ff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:12:47, skipping insertion in model container [2023-11-12 02:12:47,328 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-12 02:12:47,328 INFO L186 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2023-11-12 02:12:47,331 INFO L158 Benchmark]: Toolchain (without parser) took 250.79ms. Allocated memory is still 165.7MB. Free memory was 120.2MB in the beginning and 110.1MB in the end (delta: 10.0MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-11-12 02:12:47,332 INFO L158 Benchmark]: CDTParser took 0.28ms. Allocated memory is still 117.4MB. Free memory was 84.7MB in the beginning and 84.6MB in the end (delta: 29.3kB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-12 02:12:47,332 INFO L158 Benchmark]: CACSL2BoogieTranslator took 247.96ms. Allocated memory is still 165.7MB. Free memory was 120.0MB in the beginning and 110.1MB in the end (delta: 9.8MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-11-12 02:12:47,334 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28ms. Allocated memory is still 117.4MB. Free memory was 84.7MB in the beginning and 84.6MB in the end (delta: 29.3kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 247.96ms. Allocated memory is still 165.7MB. Free memory was 120.0MB in the beginning and 110.1MB in the end (delta: 9.8MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 126]: Unsupported Syntax Found a cast between two array/pointer types of different sizes while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71e4393d-ba83-42a0-84cb-536412cf3245/bin/uautomizer-verify-uTZkv6EMXl/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71e4393d-ba83-42a0-84cb-536412cf3245/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_71e4393d-ba83-42a0-84cb-536412cf3245/bin/uautomizer-verify-uTZkv6EMXl/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71e4393d-ba83-42a0-84cb-536412cf3245/bin/uautomizer-verify-uTZkv6EMXl/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/weaver/popl20-send-receive.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71e4393d-ba83-42a0-84cb-536412cf3245/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_71e4393d-ba83-42a0-84cb-536412cf3245/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 4eda2bf92bccdcc8638b67653fb7fdefc015ff9c815b317ad1009deb61d04585 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-cf1a783 [2023-11-12 02:12:49,851 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-12 02:12:49,960 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71e4393d-ba83-42a0-84cb-536412cf3245/bin/uautomizer-verify-uTZkv6EMXl/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2023-11-12 02:12:49,968 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-12 02:12:49,971 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-12 02:12:50,023 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-12 02:12:50,024 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-12 02:12:50,024 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-12 02:12:50,025 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-12 02:12:50,030 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-12 02:12:50,031 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-12 02:12:50,031 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-12 02:12:50,032 INFO L153 SettingsManager]: * Use SBE=true [2023-11-12 02:12:50,033 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-12 02:12:50,034 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-12 02:12:50,034 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-12 02:12:50,035 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-12 02:12:50,035 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-12 02:12:50,036 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-12 02:12:50,037 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-12 02:12:50,037 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-12 02:12:50,037 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-12 02:12:50,038 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-12 02:12:50,038 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-11-12 02:12:50,039 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-11-12 02:12:50,039 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-12 02:12:50,039 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-12 02:12:50,040 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-12 02:12:50,041 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-12 02:12:50,041 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-12 02:12:50,042 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-12 02:12:50,043 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 02:12:50,043 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-12 02:12:50,043 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-12 02:12:50,044 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-11-12 02:12:50,044 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-11-12 02:12:50,044 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-12 02:12:50,044 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-12 02:12:50,045 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-12 02:12:50,045 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-11-12 02:12:50,046 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-12 02:12:50,046 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_71e4393d-ba83-42a0-84cb-536412cf3245/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71e4393d-ba83-42a0-84cb-536412cf3245/bin/uautomizer-verify-uTZkv6EMXl Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4eda2bf92bccdcc8638b67653fb7fdefc015ff9c815b317ad1009deb61d04585 [2023-11-12 02:12:50,441 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-12 02:12:50,467 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-12 02:12:50,472 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-12 02:12:50,474 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-12 02:12:50,474 INFO L274 PluginConnector]: CDTParser initialized [2023-11-12 02:12:50,476 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71e4393d-ba83-42a0-84cb-536412cf3245/bin/uautomizer-verify-uTZkv6EMXl/../../sv-benchmarks/c/weaver/popl20-send-receive.wvr.c [2023-11-12 02:12:53,690 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-12 02:12:53,975 INFO L384 CDTParser]: Found 1 translation units. [2023-11-12 02:12:53,976 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71e4393d-ba83-42a0-84cb-536412cf3245/sv-benchmarks/c/weaver/popl20-send-receive.wvr.c [2023-11-12 02:12:53,986 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71e4393d-ba83-42a0-84cb-536412cf3245/bin/uautomizer-verify-uTZkv6EMXl/data/3080b7eaa/53cb7de6b981490788df8b49e622c5df/FLAG8f1fd015b [2023-11-12 02:12:54,001 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71e4393d-ba83-42a0-84cb-536412cf3245/bin/uautomizer-verify-uTZkv6EMXl/data/3080b7eaa/53cb7de6b981490788df8b49e622c5df [2023-11-12 02:12:54,004 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-12 02:12:54,005 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-12 02:12:54,007 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-12 02:12:54,007 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-12 02:12:54,012 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-12 02:12:54,013 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 02:12:54" (1/1) ... [2023-11-12 02:12:54,014 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@949f3a2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:12:54, skipping insertion in model container [2023-11-12 02:12:54,014 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 02:12:54" (1/1) ... [2023-11-12 02:12:54,042 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-12 02:12:54,235 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 02:12:54,250 INFO L199 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2023-11-12 02:12:54,257 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-12 02:12:54,286 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 02:12:54,294 INFO L202 MainTranslator]: Completed pre-run [2023-11-12 02:12:54,329 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 02:12:54,341 WARN L672 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-12 02:12:54,341 WARN L672 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-12 02:12:54,351 INFO L206 MainTranslator]: Completed translation [2023-11-12 02:12:54,352 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:12:54 WrapperNode [2023-11-12 02:12:54,352 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-12 02:12:54,353 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-12 02:12:54,353 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-12 02:12:54,354 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-12 02:12:54,365 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:12:54" (1/1) ... [2023-11-12 02:12:54,379 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:12:54" (1/1) ... [2023-11-12 02:12:54,409 INFO L138 Inliner]: procedures = 27, calls = 53, calls flagged for inlining = 10, calls inlined = 10, statements flattened = 165 [2023-11-12 02:12:54,410 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-12 02:12:54,411 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-12 02:12:54,411 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-12 02:12:54,411 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-12 02:12:54,421 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:12:54" (1/1) ... [2023-11-12 02:12:54,421 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:12:54" (1/1) ... [2023-11-12 02:12:54,443 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:12:54" (1/1) ... [2023-11-12 02:12:54,444 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:12:54" (1/1) ... [2023-11-12 02:12:54,463 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:12:54" (1/1) ... [2023-11-12 02:12:54,500 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:12:54" (1/1) ... [2023-11-12 02:12:54,502 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:12:54" (1/1) ... [2023-11-12 02:12:54,504 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:12:54" (1/1) ... [2023-11-12 02:12:54,508 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-12 02:12:54,509 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-12 02:12:54,509 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-12 02:12:54,509 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-12 02:12:54,510 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:12:54" (1/1) ... [2023-11-12 02:12:54,527 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 02:12:54,551 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71e4393d-ba83-42a0-84cb-536412cf3245/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:12:54,568 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71e4393d-ba83-42a0-84cb-536412cf3245/bin/uautomizer-verify-uTZkv6EMXl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-12 02:12:54,601 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71e4393d-ba83-42a0-84cb-536412cf3245/bin/uautomizer-verify-uTZkv6EMXl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-12 02:12:54,611 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-12 02:12:54,612 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2023-11-12 02:12:54,613 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-12 02:12:54,613 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2023-11-12 02:12:54,613 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-11-12 02:12:54,614 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-11-12 02:12:54,614 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-11-12 02:12:54,614 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-11-12 02:12:54,614 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-11-12 02:12:54,616 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-11-12 02:12:54,617 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-12 02:12:54,617 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-12 02:12:54,617 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-12 02:12:54,617 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-12 02:12:54,618 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-12 02:12:54,618 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-12 02:12:54,618 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2023-11-12 02:12:54,620 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 02:12:54,743 INFO L236 CfgBuilder]: Building ICFG [2023-11-12 02:12:54,745 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-12 02:12:55,248 INFO L277 CfgBuilder]: Performing block encoding [2023-11-12 02:12:55,424 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-12 02:12:55,425 INFO L302 CfgBuilder]: Removed 3 assume(true) statements. [2023-11-12 02:12:55,428 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 02:12:55 BoogieIcfgContainer [2023-11-12 02:12:55,428 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-12 02:12:55,432 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-12 02:12:55,432 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-12 02:12:55,436 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-12 02:12:55,436 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 02:12:54" (1/3) ... [2023-11-12 02:12:55,437 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@980760 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 02:12:55, skipping insertion in model container [2023-11-12 02:12:55,438 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:12:54" (2/3) ... [2023-11-12 02:12:55,438 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@980760 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 02:12:55, skipping insertion in model container [2023-11-12 02:12:55,439 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 02:12:55" (3/3) ... [2023-11-12 02:12:55,441 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-send-receive.wvr.c [2023-11-12 02:12:55,461 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-12 02:12:55,461 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 22 error locations. [2023-11-12 02:12:55,461 INFO L521 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-12 02:12:55,574 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-11-12 02:12:55,633 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 169 places, 169 transitions, 359 flow [2023-11-12 02:12:55,767 INFO L124 PetriNetUnfolderBase]: 10/166 cut-off events. [2023-11-12 02:12:55,768 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-11-12 02:12:55,774 INFO L83 FinitePrefix]: Finished finitePrefix Result has 179 conditions, 166 events. 10/166 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 188 event pairs, 0 based on Foata normal form. 0/134 useless extension candidates. Maximal degree in co-relation 130. Up to 2 conditions per place. [2023-11-12 02:12:55,774 INFO L82 GeneralOperation]: Start removeDead. Operand has 169 places, 169 transitions, 359 flow [2023-11-12 02:12:55,795 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 161 places, 161 transitions, 340 flow [2023-11-12 02:12:55,799 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-12 02:12:55,815 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 161 places, 161 transitions, 340 flow [2023-11-12 02:12:55,820 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 161 places, 161 transitions, 340 flow [2023-11-12 02:12:55,821 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 161 places, 161 transitions, 340 flow [2023-11-12 02:12:55,900 INFO L124 PetriNetUnfolderBase]: 10/161 cut-off events. [2023-11-12 02:12:55,901 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-11-12 02:12:55,903 INFO L83 FinitePrefix]: Finished finitePrefix Result has 174 conditions, 161 events. 10/161 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 190 event pairs, 0 based on Foata normal form. 0/130 useless extension candidates. Maximal degree in co-relation 130. Up to 2 conditions per place. [2023-11-12 02:12:55,907 INFO L119 LiptonReduction]: Number of co-enabled transitions 2386 [2023-11-12 02:13:20,201 INFO L134 LiptonReduction]: Checked pairs total: 3708 [2023-11-12 02:13:20,202 INFO L136 LiptonReduction]: Total number of compositions: 174 [2023-11-12 02:13:20,217 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-12 02:13:20,223 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;@47a73716, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-12 02:13:20,224 INFO L358 AbstractCegarLoop]: Starting to check reachability of 31 error locations. [2023-11-12 02:13:20,227 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-12 02:13:20,228 INFO L124 PetriNetUnfolderBase]: 1/2 cut-off events. [2023-11-12 02:13:20,228 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-12 02:13:20,228 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:13:20,229 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-11-12 02:13:20,229 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2023-11-12 02:13:20,234 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:13:20,235 INFO L85 PathProgramCache]: Analyzing trace with hash 22956, now seen corresponding path program 1 times [2023-11-12 02:13:20,247 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-12 02:13:20,248 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [935769567] [2023-11-12 02:13:20,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:13:20,248 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 02:13:20,249 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71e4393d-ba83-42a0-84cb-536412cf3245/bin/uautomizer-verify-uTZkv6EMXl/mathsat [2023-11-12 02:13:20,251 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71e4393d-ba83-42a0-84cb-536412cf3245/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 02:13:20,292 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71e4393d-ba83-42a0-84cb-536412cf3245/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 02:13:20,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:13:20,392 INFO L262 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-12 02:13:20,397 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:13:20,525 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 02:13:20,552 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-12 02:13:20,554 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 02:13:20,572 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-12 02:13:20,573 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 02:13:20,585 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-12 02:13:20,586 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 02:13:20,618 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-12 02:13:20,620 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 18 treesize of output 1 [2023-11-12 02:13:20,638 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-12 02:13:20,639 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 02:13:20,698 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-12 02:13:20,699 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 02:13:20,729 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-12 02:13:20,731 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 18 treesize of output 1 [2023-11-12 02:13:20,770 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-12 02:13:20,775 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 18 treesize of output 1 [2023-11-12 02:13:20,793 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-12 02:13:20,795 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 02:13:20,846 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-12 02:13:20,848 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 18 treesize of output 1 [2023-11-12 02:13:20,904 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-12 02:13:20,906 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 7 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2023-11-12 02:13:20,935 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-12 02:13:20,936 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 02:13:20,945 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-12 02:13:20,946 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 02:13:20,958 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-12 02:13:20,959 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 02:13:20,972 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-12 02:13:20,973 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 02:13:21,008 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-12 02:13:21,010 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 18 treesize of output 1 [2023-11-12 02:13:21,026 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-12 02:13:21,028 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 02:13:21,049 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-12 02:13:21,055 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 02:13:21,078 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-12 02:13:21,081 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 18 treesize of output 1 [2023-11-12 02:13:21,092 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-12 02:13:21,093 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 02:13:21,105 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-12 02:13:21,106 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 02:13:21,135 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-12 02:13:21,136 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 02:13:21,150 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-12 02:13:21,150 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 02:13:21,183 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 02:13:21,183 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-12 02:13:21,184 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-12 02:13:21,184 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [935769567] [2023-11-12 02:13:21,185 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [935769567] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:13:21,185 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:13:21,186 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-12 02:13:21,187 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1801833367] [2023-11-12 02:13:21,188 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:13:21,197 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 02:13:21,202 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-12 02:13:21,228 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 02:13:21,229 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:13:21,477 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 142 out of 343 [2023-11-12 02:13:21,481 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 45 transitions, 108 flow. Second operand has 3 states, 3 states have (on average 142.66666666666666) internal successors, (428), 3 states have internal predecessors, (428), 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 02:13:21,481 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:13:21,481 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 142 of 343 [2023-11-12 02:13:21,482 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:13:22,157 INFO L124 PetriNetUnfolderBase]: 1232/1914 cut-off events. [2023-11-12 02:13:22,157 INFO L125 PetriNetUnfolderBase]: For 66/66 co-relation queries the response was YES. [2023-11-12 02:13:22,164 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3927 conditions, 1914 events. 1232/1914 cut-off events. For 66/66 co-relation queries the response was YES. Maximal size of possible extension queue 164. Compared 8978 event pairs, 1193 based on Foata normal form. 0/869 useless extension candidates. Maximal degree in co-relation 3543. Up to 1878 conditions per place. [2023-11-12 02:13:22,182 INFO L140 encePairwiseOnDemand]: 336/343 looper letters, 42 selfloop transitions, 5 changer transitions 0/49 dead transitions. [2023-11-12 02:13:22,183 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 49 transitions, 210 flow [2023-11-12 02:13:22,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 02:13:22,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-12 02:13:22,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 475 transitions. [2023-11-12 02:13:22,204 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4616132167152575 [2023-11-12 02:13:22,205 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 475 transitions. [2023-11-12 02:13:22,206 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 475 transitions. [2023-11-12 02:13:22,208 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:13:22,211 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 475 transitions. [2023-11-12 02:13:22,218 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 158.33333333333334) internal successors, (475), 3 states have internal predecessors, (475), 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 02:13:22,225 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 343.0) internal successors, (1372), 4 states have internal predecessors, (1372), 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 02:13:22,226 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 343.0) internal successors, (1372), 4 states have internal predecessors, (1372), 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 02:13:22,228 INFO L175 Difference]: Start difference. First operand has 52 places, 45 transitions, 108 flow. Second operand 3 states and 475 transitions. [2023-11-12 02:13:22,230 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 49 transitions, 210 flow [2023-11-12 02:13:22,237 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 49 transitions, 198 flow, removed 0 selfloop flow, removed 6 redundant places. [2023-11-12 02:13:22,240 INFO L231 Difference]: Finished difference. Result has 48 places, 48 transitions, 127 flow [2023-11-12 02:13:22,242 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=343, PETRI_DIFFERENCE_MINUEND_FLOW=94, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=127, PETRI_PLACES=48, PETRI_TRANSITIONS=48} [2023-11-12 02:13:22,246 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, -4 predicate places. [2023-11-12 02:13:22,246 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 48 transitions, 127 flow [2023-11-12 02:13:22,247 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 142.66666666666666) internal successors, (428), 3 states have internal predecessors, (428), 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 02:13:22,247 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:13:22,247 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-11-12 02:13:22,265 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71e4393d-ba83-42a0-84cb-536412cf3245/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 02:13:22,460 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71e4393d-ba83-42a0-84cb-536412cf3245/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 02:13:22,460 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2023-11-12 02:13:22,461 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:13:22,461 INFO L85 PathProgramCache]: Analyzing trace with hash 713857, now seen corresponding path program 1 times [2023-11-12 02:13:22,462 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-12 02:13:22,462 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1858271552] [2023-11-12 02:13:22,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:13:22,462 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 02:13:22,463 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71e4393d-ba83-42a0-84cb-536412cf3245/bin/uautomizer-verify-uTZkv6EMXl/mathsat [2023-11-12 02:13:22,472 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71e4393d-ba83-42a0-84cb-536412cf3245/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 02:13:22,477 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71e4393d-ba83-42a0-84cb-536412cf3245/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 02:13:22,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:13:22,590 INFO L262 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 15 conjunts are in the unsatisfiable core [2023-11-12 02:13:22,593 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:13:22,635 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-12 02:13:22,637 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-12 02:13:22,639 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-12 02:13:22,643 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 14 treesize of output 18 [2023-11-12 02:13:22,673 INFO L322 Elim1Store]: treesize reduction 9, result has 10.0 percent of original size [2023-11-12 02:13:22,674 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 19 [2023-11-12 02:13:22,735 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-12 02:13:22,737 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-12 02:13:22,807 INFO L322 Elim1Store]: treesize reduction 24, result has 44.2 percent of original size [2023-11-12 02:13:22,807 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 2 case distinctions, treesize of input 19 treesize of output 26 [2023-11-12 02:13:22,824 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-12 02:13:22,833 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 15 [2023-11-12 02:13:23,394 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 02:13:23,394 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-12 02:13:23,614 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 02:13:23,614 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-12 02:13:23,614 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1858271552] [2023-11-12 02:13:23,615 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1858271552] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-12 02:13:23,615 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-12 02:13:23,615 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2] total 4 [2023-11-12 02:13:23,615 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [995849511] [2023-11-12 02:13:23,615 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-12 02:13:23,617 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-12 02:13:23,617 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-12 02:13:23,617 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-12 02:13:23,618 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-11-12 02:13:24,538 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 132 out of 343 [2023-11-12 02:13:24,540 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 48 transitions, 127 flow. Second operand has 6 states, 6 states have (on average 133.0) internal successors, (798), 6 states have internal predecessors, (798), 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 02:13:24,540 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:13:24,541 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 132 of 343 [2023-11-12 02:13:24,541 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:13:26,040 INFO L124 PetriNetUnfolderBase]: 1238/1928 cut-off events. [2023-11-12 02:13:26,040 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-12 02:13:26,043 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3904 conditions, 1928 events. 1238/1928 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 164. Compared 9054 event pairs, 1193 based on Foata normal form. 0/877 useless extension candidates. Maximal degree in co-relation 3824. Up to 1879 conditions per place. [2023-11-12 02:13:26,056 INFO L140 encePairwiseOnDemand]: 336/343 looper letters, 47 selfloop transitions, 14 changer transitions 0/63 dead transitions. [2023-11-12 02:13:26,057 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 63 transitions, 300 flow [2023-11-12 02:13:26,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-12 02:13:26,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-12 02:13:26,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 857 transitions. [2023-11-12 02:13:26,064 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4164237123420797 [2023-11-12 02:13:26,064 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 857 transitions. [2023-11-12 02:13:26,064 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 857 transitions. [2023-11-12 02:13:26,065 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:13:26,065 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 857 transitions. [2023-11-12 02:13:26,068 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 142.83333333333334) internal successors, (857), 6 states have internal predecessors, (857), 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 02:13:26,075 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 343.0) internal successors, (2401), 7 states have internal predecessors, (2401), 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 02:13:26,077 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 343.0) internal successors, (2401), 7 states have internal predecessors, (2401), 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 02:13:26,078 INFO L175 Difference]: Start difference. First operand has 48 places, 48 transitions, 127 flow. Second operand 6 states and 857 transitions. [2023-11-12 02:13:26,078 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 63 transitions, 300 flow [2023-11-12 02:13:26,080 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 63 transitions, 296 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-12 02:13:26,082 INFO L231 Difference]: Finished difference. Result has 56 places, 57 transitions, 226 flow [2023-11-12 02:13:26,083 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=343, PETRI_DIFFERENCE_MINUEND_FLOW=118, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=226, PETRI_PLACES=56, PETRI_TRANSITIONS=57} [2023-11-12 02:13:26,084 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 4 predicate places. [2023-11-12 02:13:26,084 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 57 transitions, 226 flow [2023-11-12 02:13:26,085 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 133.0) internal successors, (798), 6 states have internal predecessors, (798), 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 02:13:26,085 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:13:26,085 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-11-12 02:13:26,108 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71e4393d-ba83-42a0-84cb-536412cf3245/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 02:13:26,296 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71e4393d-ba83-42a0-84cb-536412cf3245/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 02:13:26,297 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2023-11-12 02:13:26,297 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:13:26,298 INFO L85 PathProgramCache]: Analyzing trace with hash 22954, now seen corresponding path program 1 times [2023-11-12 02:13:26,298 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-12 02:13:26,298 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1241295680] [2023-11-12 02:13:26,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:13:26,298 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 02:13:26,299 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71e4393d-ba83-42a0-84cb-536412cf3245/bin/uautomizer-verify-uTZkv6EMXl/mathsat [2023-11-12 02:13:26,300 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71e4393d-ba83-42a0-84cb-536412cf3245/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 02:13:26,305 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71e4393d-ba83-42a0-84cb-536412cf3245/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 02:13:26,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:13:26,369 INFO L262 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-12 02:13:26,370 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:13:26,392 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 11 treesize of output 7 [2023-11-12 02:13:26,399 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-12 02:13:26,399 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 02:13:26,418 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-12 02:13:26,419 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 02:13:26,431 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-12 02:13:26,432 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 02:13:26,439 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-12 02:13:26,439 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 02:13:26,446 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-12 02:13:26,452 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 02:13:26,485 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-12 02:13:26,486 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 02:13:26,493 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-12 02:13:26,494 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 02:13:26,504 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-12 02:13:26,505 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 02:13:26,513 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-12 02:13:26,514 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 02:13:26,532 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-12 02:13:26,533 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 02:13:26,540 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-12 02:13:26,541 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 02:13:26,560 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-12 02:13:26,561 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 02:13:26,569 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-12 02:13:26,573 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 02:13:26,579 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-12 02:13:26,580 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 02:13:26,587 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-12 02:13:26,593 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 02:13:26,600 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-12 02:13:26,606 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 02:13:26,611 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-12 02:13:26,612 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 02:13:26,634 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-12 02:13:26,634 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 02:13:26,642 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-12 02:13:26,642 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 02:13:26,671 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-12 02:13:26,671 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 7 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 1 [2023-11-12 02:13:26,688 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-12 02:13:26,689 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 02:13:26,701 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-12 02:13:26,701 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 02:13:26,718 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-12 02:13:26,719 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 02:13:26,724 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 02:13:26,724 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-12 02:13:26,724 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-12 02:13:26,725 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1241295680] [2023-11-12 02:13:26,725 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1241295680] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:13:26,725 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:13:26,725 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-12 02:13:26,725 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [430719612] [2023-11-12 02:13:26,726 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:13:26,726 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 02:13:26,726 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-12 02:13:26,727 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 02:13:26,730 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:13:26,863 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 143 out of 343 [2023-11-12 02:13:26,864 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 57 transitions, 226 flow. Second operand has 3 states, 3 states have (on average 143.66666666666666) internal successors, (431), 3 states have internal predecessors, (431), 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 02:13:26,864 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:13:26,864 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 143 of 343 [2023-11-12 02:13:26,864 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:13:27,376 INFO L124 PetriNetUnfolderBase]: 1237/1923 cut-off events. [2023-11-12 02:13:27,376 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-11-12 02:13:27,380 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3929 conditions, 1923 events. 1237/1923 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 164. Compared 9059 event pairs, 1193 based on Foata normal form. 5/888 useless extension candidates. Maximal degree in co-relation 3875. Up to 1879 conditions per place. [2023-11-12 02:13:27,394 INFO L140 encePairwiseOnDemand]: 338/343 looper letters, 42 selfloop transitions, 11 changer transitions 0/55 dead transitions. [2023-11-12 02:13:27,394 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 55 transitions, 322 flow [2023-11-12 02:13:27,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 02:13:27,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-12 02:13:27,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 471 transitions. [2023-11-12 02:13:27,396 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4577259475218659 [2023-11-12 02:13:27,397 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 471 transitions. [2023-11-12 02:13:27,397 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 471 transitions. [2023-11-12 02:13:27,397 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:13:27,397 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 471 transitions. [2023-11-12 02:13:27,399 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 157.0) internal successors, (471), 3 states have internal predecessors, (471), 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 02:13:27,402 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 343.0) internal successors, (1372), 4 states have internal predecessors, (1372), 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 02:13:27,403 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 343.0) internal successors, (1372), 4 states have internal predecessors, (1372), 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 02:13:27,403 INFO L175 Difference]: Start difference. First operand has 56 places, 57 transitions, 226 flow. Second operand 3 states and 471 transitions. [2023-11-12 02:13:27,403 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 55 transitions, 322 flow [2023-11-12 02:13:27,406 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 55 transitions, 316 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-11-12 02:13:27,408 INFO L231 Difference]: Finished difference. Result has 56 places, 55 transitions, 232 flow [2023-11-12 02:13:27,409 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=343, PETRI_DIFFERENCE_MINUEND_FLOW=210, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=232, PETRI_PLACES=56, PETRI_TRANSITIONS=55} [2023-11-12 02:13:27,410 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 4 predicate places. [2023-11-12 02:13:27,410 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 55 transitions, 232 flow [2023-11-12 02:13:27,411 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 143.66666666666666) internal successors, (431), 3 states have internal predecessors, (431), 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 02:13:27,411 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:13:27,411 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-11-12 02:13:27,431 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71e4393d-ba83-42a0-84cb-536412cf3245/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 02:13:27,622 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71e4393d-ba83-42a0-84cb-536412cf3245/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 02:13:27,622 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2023-11-12 02:13:27,623 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:13:27,624 INFO L85 PathProgramCache]: Analyzing trace with hash 23021, now seen corresponding path program 1 times [2023-11-12 02:13:27,625 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-12 02:13:27,625 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1633988831] [2023-11-12 02:13:27,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:13:27,627 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 02:13:27,628 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71e4393d-ba83-42a0-84cb-536412cf3245/bin/uautomizer-verify-uTZkv6EMXl/mathsat [2023-11-12 02:13:27,629 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71e4393d-ba83-42a0-84cb-536412cf3245/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 02:13:27,670 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71e4393d-ba83-42a0-84cb-536412cf3245/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 02:13:27,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:13:27,710 INFO L262 TraceCheckSpWp]: Trace formula consists of 50 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-12 02:13:27,714 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:13:27,782 INFO L322 Elim1Store]: treesize reduction 103, result has 12.7 percent of original size [2023-11-12 02:13:27,782 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 4 case distinctions, treesize of input 40 treesize of output 40 [2023-11-12 02:13:27,834 INFO L322 Elim1Store]: treesize reduction 60, result has 20.0 percent of original size [2023-11-12 02:13:27,834 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 4 case distinctions, treesize of input 35 treesize of output 40 [2023-11-12 02:13:27,895 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 02:13:27,895 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-12 02:13:27,895 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-12 02:13:27,895 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1633988831] [2023-11-12 02:13:27,895 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1633988831] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:13:27,895 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:13:27,896 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-12 02:13:27,896 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2100725621] [2023-11-12 02:13:27,896 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:13:27,896 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 02:13:27,896 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-12 02:13:27,897 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 02:13:27,897 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:13:28,143 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 143 out of 343 [2023-11-12 02:13:28,144 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 55 transitions, 232 flow. Second operand has 3 states, 3 states have (on average 143.66666666666666) internal successors, (431), 3 states have internal predecessors, (431), 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 02:13:28,144 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:13:28,144 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 143 of 343 [2023-11-12 02:13:28,144 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:13:28,626 INFO L124 PetriNetUnfolderBase]: 1022/1610 cut-off events. [2023-11-12 02:13:28,626 INFO L125 PetriNetUnfolderBase]: For 11/11 co-relation queries the response was YES. [2023-11-12 02:13:28,630 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3295 conditions, 1610 events. 1022/1610 cut-off events. For 11/11 co-relation queries the response was YES. Maximal size of possible extension queue 127. Compared 7371 event pairs, 981 based on Foata normal form. 2/780 useless extension candidates. Maximal degree in co-relation 3245. Up to 1575 conditions per place. [2023-11-12 02:13:28,643 INFO L140 encePairwiseOnDemand]: 340/343 looper letters, 47 selfloop transitions, 1 changer transitions 0/50 dead transitions. [2023-11-12 02:13:28,643 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 50 transitions, 288 flow [2023-11-12 02:13:28,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 02:13:28,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-12 02:13:28,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 470 transitions. [2023-11-12 02:13:28,647 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45675413022351796 [2023-11-12 02:13:28,647 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 470 transitions. [2023-11-12 02:13:28,647 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 470 transitions. [2023-11-12 02:13:28,648 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:13:28,648 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 470 transitions. [2023-11-12 02:13:28,650 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 156.66666666666666) internal successors, (470), 3 states have internal predecessors, (470), 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 02:13:28,654 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 343.0) internal successors, (1372), 4 states have internal predecessors, (1372), 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 02:13:28,655 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 343.0) internal successors, (1372), 4 states have internal predecessors, (1372), 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 02:13:28,655 INFO L175 Difference]: Start difference. First operand has 56 places, 55 transitions, 232 flow. Second operand 3 states and 470 transitions. [2023-11-12 02:13:28,655 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 50 transitions, 288 flow [2023-11-12 02:13:28,659 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 50 transitions, 274 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-12 02:13:28,660 INFO L231 Difference]: Finished difference. Result has 54 places, 50 transitions, 180 flow [2023-11-12 02:13:28,661 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=343, PETRI_DIFFERENCE_MINUEND_FLOW=178, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=180, PETRI_PLACES=54, PETRI_TRANSITIONS=50} [2023-11-12 02:13:28,663 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 2 predicate places. [2023-11-12 02:13:28,667 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 50 transitions, 180 flow [2023-11-12 02:13:28,667 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 143.66666666666666) internal successors, (431), 3 states have internal predecessors, (431), 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 02:13:28,668 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:13:28,668 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-11-12 02:13:28,684 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71e4393d-ba83-42a0-84cb-536412cf3245/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 02:13:28,895 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71e4393d-ba83-42a0-84cb-536412cf3245/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 02:13:28,896 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2023-11-12 02:13:28,896 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:13:28,896 INFO L85 PathProgramCache]: Analyzing trace with hash 713791, now seen corresponding path program 1 times [2023-11-12 02:13:28,897 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-12 02:13:28,898 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [691812739] [2023-11-12 02:13:28,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:13:28,898 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 02:13:28,898 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71e4393d-ba83-42a0-84cb-536412cf3245/bin/uautomizer-verify-uTZkv6EMXl/mathsat [2023-11-12 02:13:28,899 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71e4393d-ba83-42a0-84cb-536412cf3245/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 02:13:28,900 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71e4393d-ba83-42a0-84cb-536412cf3245/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 02:13:28,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:13:28,971 INFO L262 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-12 02:13:28,972 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:13:28,995 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 02:13:29,012 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-12 02:13:29,013 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 02:13:29,040 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-12 02:13:29,041 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 18 treesize of output 1 [2023-11-12 02:13:29,074 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-12 02:13:29,075 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 7 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2023-11-12 02:13:29,089 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-12 02:13:29,090 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 02:13:29,109 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-12 02:13:29,110 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 18 treesize of output 1 [2023-11-12 02:13:29,126 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-12 02:13:29,126 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 02:13:29,137 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-12 02:13:29,137 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 02:13:29,146 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-12 02:13:29,146 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 02:13:29,157 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-12 02:13:29,158 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 02:13:29,182 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-12 02:13:29,183 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 18 treesize of output 1 [2023-11-12 02:13:29,195 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-12 02:13:29,196 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 02:13:29,221 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-12 02:13:29,222 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 18 treesize of output 1 [2023-11-12 02:13:29,234 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-12 02:13:29,235 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 02:13:29,247 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-12 02:13:29,248 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 02:13:29,255 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-12 02:13:29,256 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 02:13:29,265 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-12 02:13:29,265 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 02:13:29,280 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-12 02:13:29,281 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 02:13:29,296 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-12 02:13:29,296 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 02:13:29,316 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-12 02:13:29,317 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 18 treesize of output 1 [2023-11-12 02:13:29,326 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-12 02:13:29,326 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 02:13:29,336 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-12 02:13:29,336 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 02:13:29,345 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-12 02:13:29,345 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 02:13:29,355 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-12 02:13:29,355 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 02:13:29,439 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 02:13:29,440 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-12 02:13:29,674 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 02:13:29,674 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-12 02:13:29,674 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [691812739] [2023-11-12 02:13:29,674 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [691812739] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-12 02:13:29,675 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-12 02:13:29,675 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2] total 4 [2023-11-12 02:13:29,675 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1991591593] [2023-11-12 02:13:29,675 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-12 02:13:29,676 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-12 02:13:29,676 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-12 02:13:29,676 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-12 02:13:29,677 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-11-12 02:13:30,813 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 137 out of 343 [2023-11-12 02:13:30,815 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 50 transitions, 180 flow. Second operand has 6 states, 6 states have (on average 138.0) internal successors, (828), 6 states have internal predecessors, (828), 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 02:13:30,815 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:13:30,815 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 137 of 343 [2023-11-12 02:13:30,815 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:13:31,926 INFO L124 PetriNetUnfolderBase]: 1021/1607 cut-off events. [2023-11-12 02:13:31,926 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-11-12 02:13:31,930 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3277 conditions, 1607 events. 1021/1607 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 127. Compared 7385 event pairs, 981 based on Foata normal form. 3/777 useless extension candidates. Maximal degree in co-relation 3264. Up to 1569 conditions per place. [2023-11-12 02:13:31,942 INFO L140 encePairwiseOnDemand]: 339/343 looper letters, 38 selfloop transitions, 9 changer transitions 0/49 dead transitions. [2023-11-12 02:13:31,942 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 49 transitions, 268 flow [2023-11-12 02:13:31,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-12 02:13:31,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-12 02:13:31,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 872 transitions. [2023-11-12 02:13:31,948 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.423712342079689 [2023-11-12 02:13:31,948 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 872 transitions. [2023-11-12 02:13:31,948 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 872 transitions. [2023-11-12 02:13:31,949 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:13:31,949 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 872 transitions. [2023-11-12 02:13:31,953 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 145.33333333333334) internal successors, (872), 6 states have internal predecessors, (872), 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 02:13:31,958 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 343.0) internal successors, (2401), 7 states have internal predecessors, (2401), 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 02:13:31,960 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 343.0) internal successors, (2401), 7 states have internal predecessors, (2401), 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 02:13:31,960 INFO L175 Difference]: Start difference. First operand has 54 places, 50 transitions, 180 flow. Second operand 6 states and 872 transitions. [2023-11-12 02:13:31,960 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 49 transitions, 268 flow [2023-11-12 02:13:31,962 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 49 transitions, 249 flow, removed 7 selfloop flow, removed 2 redundant places. [2023-11-12 02:13:31,963 INFO L231 Difference]: Finished difference. Result has 57 places, 49 transitions, 173 flow [2023-11-12 02:13:31,964 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=343, PETRI_DIFFERENCE_MINUEND_FLOW=155, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=173, PETRI_PLACES=57, PETRI_TRANSITIONS=49} [2023-11-12 02:13:31,965 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 5 predicate places. [2023-11-12 02:13:31,965 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 49 transitions, 173 flow [2023-11-12 02:13:31,966 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 138.0) internal successors, (828), 6 states have internal predecessors, (828), 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 02:13:31,966 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:13:31,966 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-11-12 02:13:31,979 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71e4393d-ba83-42a0-84cb-536412cf3245/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)] Forceful destruction successful, exit code 0 [2023-11-12 02:13:32,178 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71e4393d-ba83-42a0-84cb-536412cf3245/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 02:13:32,179 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2023-11-12 02:13:32,179 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:13:32,179 INFO L85 PathProgramCache]: Analyzing trace with hash 22141526, now seen corresponding path program 1 times [2023-11-12 02:13:32,179 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-12 02:13:32,180 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1617913919] [2023-11-12 02:13:32,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:13:32,180 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 02:13:32,180 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71e4393d-ba83-42a0-84cb-536412cf3245/bin/uautomizer-verify-uTZkv6EMXl/mathsat [2023-11-12 02:13:32,181 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71e4393d-ba83-42a0-84cb-536412cf3245/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 02:13:32,183 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71e4393d-ba83-42a0-84cb-536412cf3245/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 (7)] Waiting until timeout for monitored process [2023-11-12 02:13:32,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:13:32,281 INFO L262 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-12 02:13:32,283 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:13:32,317 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-12 02:13:32,325 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-12 02:13:32,327 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 5 [2023-11-12 02:13:32,338 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-12 02:13:32,349 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2023-11-12 02:13:32,373 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-12 02:13:32,378 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-12 02:13:32,385 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 5 treesize of output 3 [2023-11-12 02:13:32,404 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-12 02:13:32,405 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 16 treesize of output 5 [2023-11-12 02:13:32,427 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-12 02:13:32,428 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 11 treesize of output 5 [2023-11-12 02:13:32,439 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-12 02:13:32,443 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 02:13:32,465 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-12 02:13:32,472 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-12 02:13:32,473 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 16 treesize of output 5 [2023-11-12 02:13:32,485 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 02:13:32,513 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-12 02:13:32,518 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-12 02:13:32,520 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 16 treesize of output 5 [2023-11-12 02:13:32,555 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-12 02:13:32,556 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 11 treesize of output 5 [2023-11-12 02:13:32,569 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-12 02:13:32,599 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-12 02:13:32,604 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-12 02:13:32,605 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 16 treesize of output 5 [2023-11-12 02:13:32,611 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-12 02:13:32,618 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 02:13:32,642 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-12 02:13:32,643 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 11 treesize of output 5 [2023-11-12 02:13:32,655 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-12 02:13:32,722 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:13:32,722 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-12 02:13:32,723 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-12 02:13:32,723 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1617913919] [2023-11-12 02:13:32,723 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1617913919] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:13:32,723 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:13:32,723 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-12 02:13:32,724 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1009833584] [2023-11-12 02:13:32,724 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:13:32,724 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 02:13:32,725 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-12 02:13:32,726 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 02:13:32,727 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:13:32,931 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 144 out of 343 [2023-11-12 02:13:32,931 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 49 transitions, 173 flow. Second operand has 3 states, 3 states have (on average 145.33333333333334) internal successors, (436), 3 states have internal predecessors, (436), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:13:32,932 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:13:32,932 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 144 of 343 [2023-11-12 02:13:32,932 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:13:33,340 INFO L124 PetriNetUnfolderBase]: 993/1557 cut-off events. [2023-11-12 02:13:33,340 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2023-11-12 02:13:33,344 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3177 conditions, 1557 events. 993/1557 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 127. Compared 7097 event pairs, 954 based on Foata normal form. 0/760 useless extension candidates. Maximal degree in co-relation 3164. Up to 1523 conditions per place. [2023-11-12 02:13:33,356 INFO L140 encePairwiseOnDemand]: 340/343 looper letters, 44 selfloop transitions, 1 changer transitions 0/47 dead transitions. [2023-11-12 02:13:33,356 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 47 transitions, 259 flow [2023-11-12 02:13:33,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 02:13:33,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-12 02:13:33,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 471 transitions. [2023-11-12 02:13:33,360 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4577259475218659 [2023-11-12 02:13:33,360 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 471 transitions. [2023-11-12 02:13:33,360 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 471 transitions. [2023-11-12 02:13:33,361 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:13:33,361 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 471 transitions. [2023-11-12 02:13:33,363 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 157.0) internal successors, (471), 3 states have internal predecessors, (471), 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 02:13:33,365 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 343.0) internal successors, (1372), 4 states have internal predecessors, (1372), 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 02:13:33,366 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 343.0) internal successors, (1372), 4 states have internal predecessors, (1372), 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 02:13:33,366 INFO L175 Difference]: Start difference. First operand has 57 places, 49 transitions, 173 flow. Second operand 3 states and 471 transitions. [2023-11-12 02:13:33,367 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 47 transitions, 259 flow [2023-11-12 02:13:33,368 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 47 transitions, 231 flow, removed 3 selfloop flow, removed 5 redundant places. [2023-11-12 02:13:33,369 INFO L231 Difference]: Finished difference. Result has 52 places, 47 transitions, 143 flow [2023-11-12 02:13:33,370 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=343, PETRI_DIFFERENCE_MINUEND_FLOW=141, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=143, PETRI_PLACES=52, PETRI_TRANSITIONS=47} [2023-11-12 02:13:33,370 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 0 predicate places. [2023-11-12 02:13:33,371 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 47 transitions, 143 flow [2023-11-12 02:13:33,371 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 145.33333333333334) internal successors, (436), 3 states have internal predecessors, (436), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:13:33,371 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:13:33,371 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-11-12 02:13:33,394 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71e4393d-ba83-42a0-84cb-536412cf3245/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 (7)] Forceful destruction successful, exit code 0 [2023-11-12 02:13:33,583 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71e4393d-ba83-42a0-84cb-536412cf3245/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 02:13:33,584 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2023-11-12 02:13:33,584 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:13:33,584 INFO L85 PathProgramCache]: Analyzing trace with hash 22141528, now seen corresponding path program 1 times [2023-11-12 02:13:33,584 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-12 02:13:33,585 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [561580064] [2023-11-12 02:13:33,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:13:33,585 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 02:13:33,585 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71e4393d-ba83-42a0-84cb-536412cf3245/bin/uautomizer-verify-uTZkv6EMXl/mathsat [2023-11-12 02:13:33,586 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71e4393d-ba83-42a0-84cb-536412cf3245/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 02:13:33,595 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71e4393d-ba83-42a0-84cb-536412cf3245/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 (8)] Waiting until timeout for monitored process [2023-11-12 02:13:33,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:13:33,664 INFO L262 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-12 02:13:33,667 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:13:33,677 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-12 02:13:33,697 INFO L322 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2023-11-12 02:13:33,697 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 22 [2023-11-12 02:13:33,714 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-12 02:13:33,750 INFO L322 Elim1Store]: treesize reduction 37, result has 15.9 percent of original size [2023-11-12 02:13:33,750 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 22 [2023-11-12 02:13:33,774 INFO L322 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2023-11-12 02:13:33,774 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 02:13:33,809 INFO L322 Elim1Store]: treesize reduction 37, result has 15.9 percent of original size [2023-11-12 02:13:33,809 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 02:13:33,821 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-12 02:13:33,843 INFO L322 Elim1Store]: treesize reduction 37, result has 15.9 percent of original size [2023-11-12 02:13:33,844 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 02:13:33,864 INFO L322 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2023-11-12 02:13:33,865 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 1 case distinctions, treesize of input 17 treesize of output 22 [2023-11-12 02:13:33,899 INFO L322 Elim1Store]: treesize reduction 37, result has 15.9 percent of original size [2023-11-12 02:13:33,899 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 1 case distinctions, treesize of input 22 treesize of output 22 [2023-11-12 02:13:33,920 INFO L322 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2023-11-12 02:13:33,921 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 1 case distinctions, treesize of input 17 treesize of output 22 [2023-11-12 02:13:34,062 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 02:13:34,062 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-12 02:13:34,063 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-12 02:13:34,063 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [561580064] [2023-11-12 02:13:34,063 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [561580064] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:13:34,063 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:13:34,063 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-12 02:13:34,063 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [518713515] [2023-11-12 02:13:34,063 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:13:34,064 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 02:13:34,064 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-12 02:13:34,064 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 02:13:34,064 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:13:34,293 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 140 out of 343 [2023-11-12 02:13:34,294 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 47 transitions, 143 flow. Second operand has 3 states, 3 states have (on average 141.33333333333334) internal successors, (424), 3 states have internal predecessors, (424), 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 02:13:34,294 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:13:34,294 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 140 of 343 [2023-11-12 02:13:34,294 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:13:34,711 INFO L124 PetriNetUnfolderBase]: 965/1507 cut-off events. [2023-11-12 02:13:34,711 INFO L125 PetriNetUnfolderBase]: For 12/12 co-relation queries the response was YES. [2023-11-12 02:13:34,714 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3062 conditions, 1507 events. 965/1507 cut-off events. For 12/12 co-relation queries the response was YES. Maximal size of possible extension queue 127. Compared 6834 event pairs, 927 based on Foata normal form. 0/745 useless extension candidates. Maximal degree in co-relation 3049. Up to 1474 conditions per place. [2023-11-12 02:13:34,722 INFO L140 encePairwiseOnDemand]: 340/343 looper letters, 42 selfloop transitions, 1 changer transitions 0/45 dead transitions. [2023-11-12 02:13:34,722 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 45 transitions, 225 flow [2023-11-12 02:13:34,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 02:13:34,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-12 02:13:34,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 457 transitions. [2023-11-12 02:13:34,725 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44412050534499514 [2023-11-12 02:13:34,725 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 457 transitions. [2023-11-12 02:13:34,725 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 457 transitions. [2023-11-12 02:13:34,726 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:13:34,726 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 457 transitions. [2023-11-12 02:13:34,727 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 152.33333333333334) internal successors, (457), 3 states have internal predecessors, (457), 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 02:13:34,730 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 343.0) internal successors, (1372), 4 states have internal predecessors, (1372), 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 02:13:34,730 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 343.0) internal successors, (1372), 4 states have internal predecessors, (1372), 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 02:13:34,730 INFO L175 Difference]: Start difference. First operand has 52 places, 47 transitions, 143 flow. Second operand 3 states and 457 transitions. [2023-11-12 02:13:34,730 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 45 transitions, 225 flow [2023-11-12 02:13:34,731 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 45 transitions, 224 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-12 02:13:34,732 INFO L231 Difference]: Finished difference. Result has 51 places, 45 transitions, 140 flow [2023-11-12 02:13:34,732 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=343, PETRI_DIFFERENCE_MINUEND_FLOW=138, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=140, PETRI_PLACES=51, PETRI_TRANSITIONS=45} [2023-11-12 02:13:34,733 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, -1 predicate places. [2023-11-12 02:13:34,733 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 45 transitions, 140 flow [2023-11-12 02:13:34,733 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 141.33333333333334) internal successors, (424), 3 states have internal predecessors, (424), 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 02:13:34,734 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:13:34,734 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-11-12 02:13:34,743 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71e4393d-ba83-42a0-84cb-536412cf3245/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 (8)] Forceful destruction successful, exit code 0 [2023-11-12 02:13:34,935 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71e4393d-ba83-42a0-84cb-536412cf3245/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 02:13:34,936 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2023-11-12 02:13:34,936 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:13:34,936 INFO L85 PathProgramCache]: Analyzing trace with hash 686384016, now seen corresponding path program 1 times [2023-11-12 02:13:34,936 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-12 02:13:34,936 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [928596668] [2023-11-12 02:13:34,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:13:34,937 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 02:13:34,937 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71e4393d-ba83-42a0-84cb-536412cf3245/bin/uautomizer-verify-uTZkv6EMXl/mathsat [2023-11-12 02:13:34,938 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71e4393d-ba83-42a0-84cb-536412cf3245/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 02:13:34,940 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71e4393d-ba83-42a0-84cb-536412cf3245/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 (9)] Waiting until timeout for monitored process [2023-11-12 02:13:35,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:13:35,021 INFO L262 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-12 02:13:35,022 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:13:35,036 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 02:13:35,037 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-12 02:13:35,037 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-12 02:13:35,037 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [928596668] [2023-11-12 02:13:35,037 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [928596668] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:13:35,037 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:13:35,037 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-12 02:13:35,038 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [330471926] [2023-11-12 02:13:35,038 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:13:35,038 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 02:13:35,038 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-12 02:13:35,039 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 02:13:35,039 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:13:35,074 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 147 out of 343 [2023-11-12 02:13:35,074 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 45 transitions, 140 flow. Second operand has 3 states, 3 states have (on average 148.66666666666666) internal successors, (446), 3 states have internal predecessors, (446), 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 02:13:35,075 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:13:35,075 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 147 of 343 [2023-11-12 02:13:35,075 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:13:35,590 INFO L124 PetriNetUnfolderBase]: 1223/1913 cut-off events. [2023-11-12 02:13:35,590 INFO L125 PetriNetUnfolderBase]: For 24/24 co-relation queries the response was YES. [2023-11-12 02:13:35,594 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3820 conditions, 1913 events. 1223/1913 cut-off events. For 24/24 co-relation queries the response was YES. Maximal size of possible extension queue 175. Compared 9723 event pairs, 538 based on Foata normal form. 0/1007 useless extension candidates. Maximal degree in co-relation 3806. Up to 1165 conditions per place. [2023-11-12 02:13:35,607 INFO L140 encePairwiseOnDemand]: 338/343 looper letters, 64 selfloop transitions, 2 changer transitions 0/68 dead transitions. [2023-11-12 02:13:35,608 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 68 transitions, 322 flow [2023-11-12 02:13:35,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 02:13:35,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-12 02:13:35,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 502 transitions. [2023-11-12 02:13:35,611 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4878522837706511 [2023-11-12 02:13:35,611 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 502 transitions. [2023-11-12 02:13:35,611 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 502 transitions. [2023-11-12 02:13:35,612 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:13:35,612 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 502 transitions. [2023-11-12 02:13:35,614 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 167.33333333333334) internal successors, (502), 3 states have internal predecessors, (502), 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 02:13:35,616 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 343.0) internal successors, (1372), 4 states have internal predecessors, (1372), 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 02:13:35,617 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 343.0) internal successors, (1372), 4 states have internal predecessors, (1372), 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 02:13:35,617 INFO L175 Difference]: Start difference. First operand has 51 places, 45 transitions, 140 flow. Second operand 3 states and 502 transitions. [2023-11-12 02:13:35,618 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 68 transitions, 322 flow [2023-11-12 02:13:35,619 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 68 transitions, 321 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-12 02:13:35,620 INFO L231 Difference]: Finished difference. Result has 53 places, 46 transitions, 155 flow [2023-11-12 02:13:35,621 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=343, PETRI_DIFFERENCE_MINUEND_FLOW=139, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=155, PETRI_PLACES=53, PETRI_TRANSITIONS=46} [2023-11-12 02:13:35,621 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 1 predicate places. [2023-11-12 02:13:35,622 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 46 transitions, 155 flow [2023-11-12 02:13:35,622 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 148.66666666666666) internal successors, (446), 3 states have internal predecessors, (446), 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 02:13:35,622 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:13:35,623 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1] [2023-11-12 02:13:35,631 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71e4393d-ba83-42a0-84cb-536412cf3245/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 (9)] Forceful destruction successful, exit code 0 [2023-11-12 02:13:35,824 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71e4393d-ba83-42a0-84cb-536412cf3245/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 02:13:35,824 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2023-11-12 02:13:35,825 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:13:35,825 INFO L85 PathProgramCache]: Analyzing trace with hash -208148818, now seen corresponding path program 2 times [2023-11-12 02:13:35,826 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-12 02:13:35,826 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [599428034] [2023-11-12 02:13:35,826 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-12 02:13:35,826 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 02:13:35,826 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71e4393d-ba83-42a0-84cb-536412cf3245/bin/uautomizer-verify-uTZkv6EMXl/mathsat [2023-11-12 02:13:35,827 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71e4393d-ba83-42a0-84cb-536412cf3245/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 02:13:35,831 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71e4393d-ba83-42a0-84cb-536412cf3245/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 (10)] Waiting until timeout for monitored process [2023-11-12 02:13:35,934 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-12 02:13:35,934 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-12 02:13:35,937 INFO L262 TraceCheckSpWp]: Trace formula consists of 50 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-12 02:13:35,939 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:13:35,970 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-12 02:13:35,972 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-12 02:13:35,979 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-12 02:13:35,980 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 5 [2023-11-12 02:13:35,994 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-12 02:13:36,003 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 15 [2023-11-12 02:13:36,025 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-12 02:13:36,027 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-12 02:13:36,036 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2023-11-12 02:13:36,054 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-12 02:13:36,055 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 16 treesize of output 5 [2023-11-12 02:13:36,085 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-12 02:13:36,086 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 11 treesize of output 5 [2023-11-12 02:13:36,096 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-12 02:13:36,101 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 02:13:36,123 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-12 02:13:36,130 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-12 02:13:36,132 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 16 treesize of output 5 [2023-11-12 02:13:36,146 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 02:13:36,173 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-12 02:13:36,174 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 11 treesize of output 5 [2023-11-12 02:13:36,184 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-12 02:13:36,187 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 02:13:36,209 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-12 02:13:36,218 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-12 02:13:36,224 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2023-11-12 02:13:36,238 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-12 02:13:36,239 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 16 treesize of output 5 [2023-11-12 02:13:36,346 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-11-12 02:13:36,347 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-12 02:13:36,347 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-12 02:13:36,347 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [599428034] [2023-11-12 02:13:36,347 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [599428034] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:13:36,347 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:13:36,348 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-12 02:13:36,348 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1952358622] [2023-11-12 02:13:36,348 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:13:36,348 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 02:13:36,349 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-12 02:13:36,349 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 02:13:36,349 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:13:36,582 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 144 out of 343 [2023-11-12 02:13:36,582 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 46 transitions, 155 flow. Second operand has 3 states, 3 states have (on average 145.0) internal successors, (435), 3 states have internal predecessors, (435), 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 02:13:36,582 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:13:36,582 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 144 of 343 [2023-11-12 02:13:36,583 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:13:37,017 INFO L124 PetriNetUnfolderBase]: 952/1508 cut-off events. [2023-11-12 02:13:37,017 INFO L125 PetriNetUnfolderBase]: For 99/99 co-relation queries the response was YES. [2023-11-12 02:13:37,020 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3291 conditions, 1508 events. 952/1508 cut-off events. For 99/99 co-relation queries the response was YES. Maximal size of possible extension queue 161. Compared 7608 event pairs, 847 based on Foata normal form. 1/959 useless extension candidates. Maximal degree in co-relation 3275. Up to 1445 conditions per place. [2023-11-12 02:13:37,039 INFO L140 encePairwiseOnDemand]: 340/343 looper letters, 41 selfloop transitions, 1 changer transitions 0/44 dead transitions. [2023-11-12 02:13:37,039 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 44 transitions, 227 flow [2023-11-12 02:13:37,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 02:13:37,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-12 02:13:37,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 467 transitions. [2023-11-12 02:13:37,043 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45383867832847424 [2023-11-12 02:13:37,043 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 467 transitions. [2023-11-12 02:13:37,043 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 467 transitions. [2023-11-12 02:13:37,044 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:13:37,044 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 467 transitions. [2023-11-12 02:13:37,046 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 155.66666666666666) internal successors, (467), 3 states have internal predecessors, (467), 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 02:13:37,048 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 343.0) internal successors, (1372), 4 states have internal predecessors, (1372), 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 02:13:37,049 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 343.0) internal successors, (1372), 4 states have internal predecessors, (1372), 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 02:13:37,049 INFO L175 Difference]: Start difference. First operand has 53 places, 46 transitions, 155 flow. Second operand 3 states and 467 transitions. [2023-11-12 02:13:37,049 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 44 transitions, 227 flow [2023-11-12 02:13:37,050 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 44 transitions, 203 flow, removed 3 selfloop flow, removed 5 redundant places. [2023-11-12 02:13:37,053 INFO L231 Difference]: Finished difference. Result has 48 places, 44 transitions, 121 flow [2023-11-12 02:13:37,053 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=343, PETRI_DIFFERENCE_MINUEND_FLOW=119, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=121, PETRI_PLACES=48, PETRI_TRANSITIONS=44} [2023-11-12 02:13:37,054 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, -4 predicate places. [2023-11-12 02:13:37,054 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 44 transitions, 121 flow [2023-11-12 02:13:37,055 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 145.0) internal successors, (435), 3 states have internal predecessors, (435), 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 02:13:37,055 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:13:37,055 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1] [2023-11-12 02:13:37,077 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71e4393d-ba83-42a0-84cb-536412cf3245/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 (10)] Forceful destruction successful, exit code 0 [2023-11-12 02:13:37,267 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71e4393d-ba83-42a0-84cb-536412cf3245/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 02:13:37,267 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2023-11-12 02:13:37,268 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:13:37,268 INFO L85 PathProgramCache]: Analyzing trace with hash -208148884, now seen corresponding path program 2 times [2023-11-12 02:13:37,269 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-12 02:13:37,269 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [340317849] [2023-11-12 02:13:37,269 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-12 02:13:37,269 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 02:13:37,269 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71e4393d-ba83-42a0-84cb-536412cf3245/bin/uautomizer-verify-uTZkv6EMXl/mathsat [2023-11-12 02:13:37,270 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71e4393d-ba83-42a0-84cb-536412cf3245/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 02:13:37,311 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71e4393d-ba83-42a0-84cb-536412cf3245/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 (11)] Waiting until timeout for monitored process [2023-11-12 02:13:37,409 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-12 02:13:37,409 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-12 02:13:37,415 INFO L262 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 11 conjunts are in the unsatisfiable core [2023-11-12 02:13:37,417 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:13:37,440 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 02:13:37,455 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-12 02:13:37,456 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 02:13:37,474 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-12 02:13:37,475 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 02:13:37,483 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-12 02:13:37,483 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 02:13:37,496 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-12 02:13:37,497 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 02:13:37,504 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-12 02:13:37,504 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 02:13:37,518 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-12 02:13:37,519 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 02:13:37,526 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-12 02:13:37,527 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 02:13:37,538 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-12 02:13:37,539 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 02:13:37,547 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-12 02:13:37,548 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 02:13:37,561 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-12 02:13:37,562 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 02:13:37,583 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-12 02:13:37,584 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 18 treesize of output 1 [2023-11-12 02:13:37,609 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-12 02:13:37,609 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 18 treesize of output 1 [2023-11-12 02:13:37,639 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-12 02:13:37,640 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 7 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2023-11-12 02:13:37,653 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-12 02:13:37,654 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 02:13:37,674 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-12 02:13:37,675 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 18 treesize of output 1 [2023-11-12 02:13:37,696 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-12 02:13:37,697 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 18 treesize of output 1 [2023-11-12 02:13:37,709 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-12 02:13:37,710 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 02:13:37,724 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-12 02:13:37,725 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 02:13:37,733 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-12 02:13:37,734 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 02:13:37,747 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-12 02:13:37,748 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 02:13:37,756 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-12 02:13:37,757 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 02:13:37,771 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-12 02:13:37,772 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 02:13:37,794 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-12 02:13:37,795 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 18 treesize of output 1 [2023-11-12 02:13:38,000 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:13:38,000 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-12 02:13:38,703 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:13:38,703 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-12 02:13:38,704 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [340317849] [2023-11-12 02:13:38,704 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [340317849] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-12 02:13:38,704 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-12 02:13:38,704 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2023-11-12 02:13:38,704 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [876357152] [2023-11-12 02:13:38,704 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-12 02:13:38,704 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-12 02:13:38,705 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-12 02:13:38,705 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-12 02:13:38,706 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132