./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/weaver/popl20-more-max-array-hom.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 9bd2c7ff Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cf1f7dc-fb55-46de-b9ed-6b4a32462956/bin/uautomizer-verify-uCwYo4JHxu/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cf1f7dc-fb55-46de-b9ed-6b4a32462956/bin/uautomizer-verify-uCwYo4JHxu/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cf1f7dc-fb55-46de-b9ed-6b4a32462956/bin/uautomizer-verify-uCwYo4JHxu/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cf1f7dc-fb55-46de-b9ed-6b4a32462956/bin/uautomizer-verify-uCwYo4JHxu/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/weaver/popl20-more-max-array-hom.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cf1f7dc-fb55-46de-b9ed-6b4a32462956/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cf1f7dc-fb55-46de-b9ed-6b4a32462956/bin/uautomizer-verify-uCwYo4JHxu --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 25cf9c0a16564c460f6e824f90a2df4185d2e5d2c682a221258efaf06dec8ca4 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 07:33:48,236 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 07:33:48,352 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cf1f7dc-fb55-46de-b9ed-6b4a32462956/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2023-11-19 07:33:48,364 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 07:33:48,365 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 07:33:48,405 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 07:33:48,406 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 07:33:48,407 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 07:33:48,408 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 07:33:48,413 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 07:33:48,414 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-19 07:33:48,414 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-19 07:33:48,415 INFO L153 SettingsManager]: * Use SBE=true [2023-11-19 07:33:48,416 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 07:33:48,417 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-19 07:33:48,417 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 07:33:48,418 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-19 07:33:48,418 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 07:33:48,418 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-19 07:33:48,419 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-19 07:33:48,419 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-19 07:33:48,420 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 07:33:48,420 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-19 07:33:48,420 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-19 07:33:48,421 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-19 07:33:48,421 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 07:33:48,422 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 07:33:48,422 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-19 07:33:48,423 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 07:33:48,423 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:33:48,425 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 07:33:48,425 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 07:33:48,425 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-19 07:33:48,425 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 07:33:48,426 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-19 07:33:48,426 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-19 07:33:48,426 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 07:33:48,426 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-19 07:33:48,426 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_8cf1f7dc-fb55-46de-b9ed-6b4a32462956/bin/uautomizer-verify-uCwYo4JHxu/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cf1f7dc-fb55-46de-b9ed-6b4a32462956/bin/uautomizer-verify-uCwYo4JHxu Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 25cf9c0a16564c460f6e824f90a2df4185d2e5d2c682a221258efaf06dec8ca4 [2023-11-19 07:33:48,713 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 07:33:48,735 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 07:33:48,738 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 07:33:48,740 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 07:33:48,740 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 07:33:48,742 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cf1f7dc-fb55-46de-b9ed-6b4a32462956/bin/uautomizer-verify-uCwYo4JHxu/../../sv-benchmarks/c/weaver/popl20-more-max-array-hom.wvr.c [2023-11-19 07:33:51,839 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 07:33:52,122 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 07:33:52,123 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cf1f7dc-fb55-46de-b9ed-6b4a32462956/sv-benchmarks/c/weaver/popl20-more-max-array-hom.wvr.c [2023-11-19 07:33:52,133 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cf1f7dc-fb55-46de-b9ed-6b4a32462956/bin/uautomizer-verify-uCwYo4JHxu/data/46652abdb/e7c45d42c013483d958500c500eb85ba/FLAG794025a8f [2023-11-19 07:33:52,152 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cf1f7dc-fb55-46de-b9ed-6b4a32462956/bin/uautomizer-verify-uCwYo4JHxu/data/46652abdb/e7c45d42c013483d958500c500eb85ba [2023-11-19 07:33:52,158 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 07:33:52,161 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 07:33:52,165 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 07:33:52,165 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 07:33:52,171 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 07:33:52,172 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:33:52" (1/1) ... [2023-11-19 07:33:52,174 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3b70fa23 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:33:52, skipping insertion in model container [2023-11-19 07:33:52,174 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:33:52" (1/1) ... [2023-11-19 07:33:52,211 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 07:33:52,471 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:33:52,483 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) [2023-11-19 07:33:52,484 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@319bf33e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:33:52, skipping insertion in model container [2023-11-19 07:33:52,484 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 07:33:52,485 INFO L186 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2023-11-19 07:33:52,487 INFO L158 Benchmark]: Toolchain (without parser) took 324.68ms. Allocated memory is still 123.7MB. Free memory was 79.7MB in the beginning and 69.6MB in the end (delta: 10.0MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-11-19 07:33:52,488 INFO L158 Benchmark]: CDTParser took 0.30ms. Allocated memory is still 123.7MB. Free memory is still 96.1MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-19 07:33:52,489 INFO L158 Benchmark]: CACSL2BoogieTranslator took 319.85ms. Allocated memory is still 123.7MB. Free memory was 79.3MB in the beginning and 69.6MB in the end (delta: 9.7MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-11-19 07:33:52,491 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30ms. Allocated memory is still 123.7MB. Free memory is still 96.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 319.85ms. Allocated memory is still 123.7MB. Free memory was 79.3MB in the beginning and 69.6MB in the end (delta: 9.7MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 109]: Unsupported Syntax Found a cast between two array/pointer types of different sizes while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cf1f7dc-fb55-46de-b9ed-6b4a32462956/bin/uautomizer-verify-uCwYo4JHxu/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cf1f7dc-fb55-46de-b9ed-6b4a32462956/bin/uautomizer-verify-uCwYo4JHxu/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cf1f7dc-fb55-46de-b9ed-6b4a32462956/bin/uautomizer-verify-uCwYo4JHxu/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cf1f7dc-fb55-46de-b9ed-6b4a32462956/bin/uautomizer-verify-uCwYo4JHxu/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/weaver/popl20-more-max-array-hom.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cf1f7dc-fb55-46de-b9ed-6b4a32462956/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cf1f7dc-fb55-46de-b9ed-6b4a32462956/bin/uautomizer-verify-uCwYo4JHxu --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 25cf9c0a16564c460f6e824f90a2df4185d2e5d2c682a221258efaf06dec8ca4 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 07:33:55,067 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 07:33:55,145 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cf1f7dc-fb55-46de-b9ed-6b4a32462956/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2023-11-19 07:33:55,177 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 07:33:55,178 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 07:33:55,207 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 07:33:55,208 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 07:33:55,209 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 07:33:55,210 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 07:33:55,210 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 07:33:55,211 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-19 07:33:55,212 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-19 07:33:55,213 INFO L153 SettingsManager]: * Use SBE=true [2023-11-19 07:33:55,214 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 07:33:55,214 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-19 07:33:55,215 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 07:33:55,216 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-19 07:33:55,217 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 07:33:55,217 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-19 07:33:55,218 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-19 07:33:55,219 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-19 07:33:55,220 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 07:33:55,220 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-19 07:33:55,221 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-11-19 07:33:55,221 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-11-19 07:33:55,222 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-19 07:33:55,222 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-19 07:33:55,223 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 07:33:55,223 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 07:33:55,224 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-19 07:33:55,225 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 07:33:55,225 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:33:55,225 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 07:33:55,226 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 07:33:55,226 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-11-19 07:33:55,227 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-11-19 07:33:55,227 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-19 07:33:55,227 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-19 07:33:55,228 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 07:33:55,228 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-11-19 07:33:55,228 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-19 07:33:55,229 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_8cf1f7dc-fb55-46de-b9ed-6b4a32462956/bin/uautomizer-verify-uCwYo4JHxu/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cf1f7dc-fb55-46de-b9ed-6b4a32462956/bin/uautomizer-verify-uCwYo4JHxu Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 25cf9c0a16564c460f6e824f90a2df4185d2e5d2c682a221258efaf06dec8ca4 [2023-11-19 07:33:55,604 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 07:33:55,628 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 07:33:55,631 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 07:33:55,633 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 07:33:55,633 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 07:33:55,635 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cf1f7dc-fb55-46de-b9ed-6b4a32462956/bin/uautomizer-verify-uCwYo4JHxu/../../sv-benchmarks/c/weaver/popl20-more-max-array-hom.wvr.c [2023-11-19 07:33:58,897 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 07:33:59,197 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 07:33:59,199 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cf1f7dc-fb55-46de-b9ed-6b4a32462956/sv-benchmarks/c/weaver/popl20-more-max-array-hom.wvr.c [2023-11-19 07:33:59,208 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cf1f7dc-fb55-46de-b9ed-6b4a32462956/bin/uautomizer-verify-uCwYo4JHxu/data/beff005a4/01cdbcf2242a49ffaa4e4ab9a07c5eba/FLAG27cb8f21f [2023-11-19 07:33:59,226 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cf1f7dc-fb55-46de-b9ed-6b4a32462956/bin/uautomizer-verify-uCwYo4JHxu/data/beff005a4/01cdbcf2242a49ffaa4e4ab9a07c5eba [2023-11-19 07:33:59,233 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 07:33:59,238 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 07:33:59,243 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 07:33:59,243 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 07:33:59,249 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 07:33:59,252 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:33:59" (1/1) ... [2023-11-19 07:33:59,254 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@72e065b3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:33:59, skipping insertion in model container [2023-11-19 07:33:59,254 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:33:59" (1/1) ... [2023-11-19 07:33:59,287 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 07:33:59,557 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:33:59,581 INFO L199 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2023-11-19 07:33:59,594 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 07:33:59,626 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:33:59,641 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 07:33:59,692 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:33:59,706 WARN L675 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 07:33:59,709 WARN L675 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 07:33:59,718 INFO L206 MainTranslator]: Completed translation [2023-11-19 07:33:59,719 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:33:59 WrapperNode [2023-11-19 07:33:59,719 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 07:33:59,721 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 07:33:59,721 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 07:33:59,736 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 07:33:59,744 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:33:59" (1/1) ... [2023-11-19 07:33:59,757 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:33:59" (1/1) ... [2023-11-19 07:33:59,801 INFO L138 Inliner]: procedures = 26, calls = 44, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 104 [2023-11-19 07:33:59,801 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 07:33:59,802 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 07:33:59,803 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 07:33:59,803 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 07:33:59,812 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:33:59" (1/1) ... [2023-11-19 07:33:59,813 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:33:59" (1/1) ... [2023-11-19 07:33:59,840 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:33:59" (1/1) ... [2023-11-19 07:33:59,840 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:33:59" (1/1) ... [2023-11-19 07:33:59,849 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:33:59" (1/1) ... [2023-11-19 07:33:59,871 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:33:59" (1/1) ... [2023-11-19 07:33:59,873 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:33:59" (1/1) ... [2023-11-19 07:33:59,875 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:33:59" (1/1) ... [2023-11-19 07:33:59,878 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 07:33:59,880 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 07:33:59,880 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 07:33:59,880 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 07:33:59,881 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:33:59" (1/1) ... [2023-11-19 07:33:59,887 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:33:59,908 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cf1f7dc-fb55-46de-b9ed-6b4a32462956/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:33:59,922 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cf1f7dc-fb55-46de-b9ed-6b4a32462956/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 07:33:59,959 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cf1f7dc-fb55-46de-b9ed-6b4a32462956/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 07:33:59,974 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 07:33:59,975 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2023-11-19 07:33:59,975 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-19 07:33:59,975 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2023-11-19 07:33:59,976 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-11-19 07:33:59,976 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-11-19 07:33:59,976 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-11-19 07:33:59,976 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-11-19 07:33:59,977 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-11-19 07:33:59,977 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-11-19 07:33:59,978 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-19 07:33:59,978 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-19 07:33:59,978 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-19 07:33:59,978 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 07:33:59,979 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 07:33:59,979 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-19 07:33:59,979 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2023-11-19 07:33:59,981 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-19 07:34:00,153 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 07:34:00,155 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 07:34:00,685 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 07:34:00,886 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 07:34:00,886 INFO L302 CfgBuilder]: Removed 4 assume(true) statements. [2023-11-19 07:34:00,894 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:34:00 BoogieIcfgContainer [2023-11-19 07:34:00,894 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 07:34:00,898 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 07:34:00,898 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 07:34:00,902 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 07:34:00,902 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 07:33:59" (1/3) ... [2023-11-19 07:34:00,904 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d38b20c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:34:00, skipping insertion in model container [2023-11-19 07:34:00,904 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:33:59" (2/3) ... [2023-11-19 07:34:00,905 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d38b20c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:34:00, skipping insertion in model container [2023-11-19 07:34:00,905 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:34:00" (3/3) ... [2023-11-19 07:34:00,907 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-more-max-array-hom.wvr.c [2023-11-19 07:34:00,928 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 07:34:00,928 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 28 error locations. [2023-11-19 07:34:00,928 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-19 07:34:01,079 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-11-19 07:34:01,120 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 188 places, 192 transitions, 405 flow [2023-11-19 07:34:01,202 INFO L124 PetriNetUnfolderBase]: 14/189 cut-off events. [2023-11-19 07:34:01,202 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-11-19 07:34:01,208 INFO L83 FinitePrefix]: Finished finitePrefix Result has 202 conditions, 189 events. 14/189 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 231 event pairs, 0 based on Foata normal form. 0/147 useless extension candidates. Maximal degree in co-relation 133. Up to 2 conditions per place. [2023-11-19 07:34:01,209 INFO L82 GeneralOperation]: Start removeDead. Operand has 188 places, 192 transitions, 405 flow [2023-11-19 07:34:01,217 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 180 places, 184 transitions, 386 flow [2023-11-19 07:34:01,221 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-19 07:34:01,231 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 180 places, 184 transitions, 386 flow [2023-11-19 07:34:01,234 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 180 places, 184 transitions, 386 flow [2023-11-19 07:34:01,235 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 180 places, 184 transitions, 386 flow [2023-11-19 07:34:01,287 INFO L124 PetriNetUnfolderBase]: 14/184 cut-off events. [2023-11-19 07:34:01,287 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-11-19 07:34:01,291 INFO L83 FinitePrefix]: Finished finitePrefix Result has 197 conditions, 184 events. 14/184 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 233 event pairs, 0 based on Foata normal form. 0/143 useless extension candidates. Maximal degree in co-relation 133. Up to 2 conditions per place. [2023-11-19 07:34:01,294 INFO L119 LiptonReduction]: Number of co-enabled transitions 3472 [2023-11-19 07:34:27,102 INFO L134 LiptonReduction]: Checked pairs total: 4035 [2023-11-19 07:34:27,102 INFO L136 LiptonReduction]: Total number of compositions: 186 [2023-11-19 07:34:27,118 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 07:34:27,125 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;@367eedfe, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-19 07:34:27,126 INFO L358 AbstractCegarLoop]: Starting to check reachability of 43 error locations. [2023-11-19 07:34:27,128 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-19 07:34:27,129 INFO L124 PetriNetUnfolderBase]: 1/2 cut-off events. [2023-11-19 07:34:27,129 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-19 07:34:27,129 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:34:27,130 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-11-19 07:34:27,130 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 40 more)] === [2023-11-19 07:34:27,136 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:34:27,136 INFO L85 PathProgramCache]: Analyzing trace with hash 25164, now seen corresponding path program 1 times [2023-11-19 07:34:27,149 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-19 07:34:27,149 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1371542887] [2023-11-19 07:34:27,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:34:27,150 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 [2023-11-19 07:34:27,150 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cf1f7dc-fb55-46de-b9ed-6b4a32462956/bin/uautomizer-verify-uCwYo4JHxu/mathsat [2023-11-19 07:34:27,176 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cf1f7dc-fb55-46de-b9ed-6b4a32462956/bin/uautomizer-verify-uCwYo4JHxu/mathsat -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) [2023-11-19 07:34:27,178 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cf1f7dc-fb55-46de-b9ed-6b4a32462956/bin/uautomizer-verify-uCwYo4JHxu/mathsat -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 [2023-11-19 07:34:27,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:34:27,258 INFO L262 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-19 07:34:27,263 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:34:27,348 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-11-19 07:34:27,380 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:34:27,381 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 1 [2023-11-19 07:34:27,410 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:34:27,411 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-19 07:34:27,437 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:34:27,438 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 1 [2023-11-19 07:34:27,445 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:34:27,446 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 1 [2023-11-19 07:34:27,461 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:34:27,462 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-19 07:34:27,477 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:34:27,478 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-19 07:34:27,493 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:34:27,494 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 1 [2023-11-19 07:34:27,501 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:34:27,502 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 1 [2023-11-19 07:34:27,510 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:34:27,511 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-19 07:34:27,517 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:34:27,518 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 1 [2023-11-19 07:34:27,526 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:34:27,527 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-19 07:34:27,551 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:34:27,552 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 1 [2023-11-19 07:34:27,566 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:34:27,567 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-19 07:34:27,606 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:34:27,607 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 7 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 1 [2023-11-19 07:34:27,642 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:34:27,643 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 1 [2023-11-19 07:34:27,656 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:34:27,656 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-19 07:34:27,672 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:34:27,673 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 1 [2023-11-19 07:34:27,682 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:34:27,683 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 1 [2023-11-19 07:34:27,691 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:34:27,691 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-19 07:34:27,702 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:34:27,703 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-19 07:34:27,718 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:34:27,718 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 1 [2023-11-19 07:34:27,728 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:34:27,728 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-19 07:34:27,733 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:34:27,734 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 1 [2023-11-19 07:34:27,741 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:34:27,741 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:34:27,742 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-19 07:34:27,742 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1371542887] [2023-11-19 07:34:27,742 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1371542887] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:34:27,743 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:34:27,743 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-19 07:34:27,744 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1611750820] [2023-11-19 07:34:27,745 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:34:27,753 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:34:27,759 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-19 07:34:27,780 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:34:27,780 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:34:27,904 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 152 out of 378 [2023-11-19 07:34:27,908 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 51 transitions, 120 flow. Second operand has 3 states, 3 states have (on average 152.66666666666666) internal successors, (458), 3 states have internal predecessors, (458), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:34:27,908 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:34:27,908 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 152 of 378 [2023-11-19 07:34:27,909 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:34:28,504 INFO L124 PetriNetUnfolderBase]: 1817/2564 cut-off events. [2023-11-19 07:34:28,505 INFO L125 PetriNetUnfolderBase]: For 84/84 co-relation queries the response was YES. [2023-11-19 07:34:28,511 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5226 conditions, 2564 events. 1817/2564 cut-off events. For 84/84 co-relation queries the response was YES. Maximal size of possible extension queue 160. Compared 10333 event pairs, 1428 based on Foata normal form. 0/1026 useless extension candidates. Maximal degree in co-relation 4490. Up to 2562 conditions per place. [2023-11-19 07:34:28,535 INFO L140 encePairwiseOnDemand]: 366/378 looper letters, 39 selfloop transitions, 4 changer transitions 0/43 dead transitions. [2023-11-19 07:34:28,535 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 43 transitions, 190 flow [2023-11-19 07:34:28,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:34:28,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 07:34:28,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 507 transitions. [2023-11-19 07:34:28,561 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4470899470899471 [2023-11-19 07:34:28,562 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 507 transitions. [2023-11-19 07:34:28,563 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 507 transitions. [2023-11-19 07:34:28,568 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:34:28,571 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 507 transitions. [2023-11-19 07:34:28,576 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 169.0) internal successors, (507), 3 states have internal predecessors, (507), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:34:28,586 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 378.0) internal successors, (1512), 4 states have internal predecessors, (1512), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:34:28,587 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 378.0) internal successors, (1512), 4 states have internal predecessors, (1512), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:34:28,589 INFO L175 Difference]: Start difference. First operand has 57 places, 51 transitions, 120 flow. Second operand 3 states and 507 transitions. [2023-11-19 07:34:28,597 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 43 transitions, 190 flow [2023-11-19 07:34:28,604 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 43 transitions, 178 flow, removed 0 selfloop flow, removed 6 redundant places. [2023-11-19 07:34:28,607 INFO L231 Difference]: Finished difference. Result has 45 places, 43 transitions, 100 flow [2023-11-19 07:34:28,609 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=378, PETRI_DIFFERENCE_MINUEND_FLOW=92, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=100, PETRI_PLACES=45, PETRI_TRANSITIONS=43} [2023-11-19 07:34:28,613 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, -12 predicate places. [2023-11-19 07:34:28,613 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 43 transitions, 100 flow [2023-11-19 07:34:28,614 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 152.66666666666666) internal successors, (458), 3 states have internal predecessors, (458), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:34:28,614 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:34:28,614 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-11-19 07:34:28,624 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cf1f7dc-fb55-46de-b9ed-6b4a32462956/bin/uautomizer-verify-uCwYo4JHxu/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Ended with exit code 0 [2023-11-19 07:34:28,824 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cf1f7dc-fb55-46de-b9ed-6b4a32462956/bin/uautomizer-verify-uCwYo4JHxu/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-19 07:34:28,824 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 40 more)] === [2023-11-19 07:34:28,825 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:34:28,825 INFO L85 PathProgramCache]: Analyzing trace with hash 25247, now seen corresponding path program 1 times [2023-11-19 07:34:28,826 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-19 07:34:28,826 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1649896037] [2023-11-19 07:34:28,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:34:28,826 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 [2023-11-19 07:34:28,826 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cf1f7dc-fb55-46de-b9ed-6b4a32462956/bin/uautomizer-verify-uCwYo4JHxu/mathsat [2023-11-19 07:34:28,828 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cf1f7dc-fb55-46de-b9ed-6b4a32462956/bin/uautomizer-verify-uCwYo4JHxu/mathsat -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) [2023-11-19 07:34:28,843 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cf1f7dc-fb55-46de-b9ed-6b4a32462956/bin/uautomizer-verify-uCwYo4JHxu/mathsat -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 [2023-11-19 07:34:28,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:34:28,908 INFO L262 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-19 07:34:28,909 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:34:28,930 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:34:28,931 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:34:28,931 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-19 07:34:28,931 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1649896037] [2023-11-19 07:34:28,932 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1649896037] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:34:28,932 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:34:28,932 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-19 07:34:28,932 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [49503077] [2023-11-19 07:34:28,933 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:34:28,934 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:34:28,934 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-19 07:34:28,935 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:34:28,935 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:34:29,021 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 153 out of 378 [2023-11-19 07:34:29,023 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 43 transitions, 100 flow. Second operand has 3 states, 3 states have (on average 153.66666666666666) internal successors, (461), 3 states have internal predecessors, (461), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:34:29,023 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:34:29,023 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 153 of 378 [2023-11-19 07:34:29,023 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:34:29,573 INFO L124 PetriNetUnfolderBase]: 1817/2566 cut-off events. [2023-11-19 07:34:29,574 INFO L125 PetriNetUnfolderBase]: For 15/15 co-relation queries the response was YES. [2023-11-19 07:34:29,577 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5170 conditions, 2566 events. 1817/2566 cut-off events. For 15/15 co-relation queries the response was YES. Maximal size of possible extension queue 160. Compared 10315 event pairs, 1428 based on Foata normal form. 1/1029 useless extension candidates. Maximal degree in co-relation 5147. Up to 2565 conditions per place. [2023-11-19 07:34:29,596 INFO L140 encePairwiseOnDemand]: 373/378 looper letters, 43 selfloop transitions, 2 changer transitions 0/45 dead transitions. [2023-11-19 07:34:29,596 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 45 transitions, 194 flow [2023-11-19 07:34:29,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:34:29,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 07:34:29,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 507 transitions. [2023-11-19 07:34:29,599 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4470899470899471 [2023-11-19 07:34:29,600 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 507 transitions. [2023-11-19 07:34:29,600 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 507 transitions. [2023-11-19 07:34:29,600 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:34:29,601 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 507 transitions. [2023-11-19 07:34:29,602 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 169.0) internal successors, (507), 3 states have internal predecessors, (507), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:34:29,606 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 378.0) internal successors, (1512), 4 states have internal predecessors, (1512), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:34:29,607 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 378.0) internal successors, (1512), 4 states have internal predecessors, (1512), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:34:29,607 INFO L175 Difference]: Start difference. First operand has 45 places, 43 transitions, 100 flow. Second operand 3 states and 507 transitions. [2023-11-19 07:34:29,607 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 45 transitions, 194 flow [2023-11-19 07:34:29,608 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 45 transitions, 186 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-19 07:34:29,610 INFO L231 Difference]: Finished difference. Result has 46 places, 44 transitions, 108 flow [2023-11-19 07:34:29,610 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=378, PETRI_DIFFERENCE_MINUEND_FLOW=92, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=108, PETRI_PLACES=46, PETRI_TRANSITIONS=44} [2023-11-19 07:34:29,611 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, -11 predicate places. [2023-11-19 07:34:29,611 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 44 transitions, 108 flow [2023-11-19 07:34:29,612 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 153.66666666666666) internal successors, (461), 3 states have internal predecessors, (461), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:34:29,612 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:34:29,612 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-11-19 07:34:29,620 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cf1f7dc-fb55-46de-b9ed-6b4a32462956/bin/uautomizer-verify-uCwYo4JHxu/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Ended with exit code 0 [2023-11-19 07:34:29,820 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cf1f7dc-fb55-46de-b9ed-6b4a32462956/bin/uautomizer-verify-uCwYo4JHxu/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-19 07:34:29,821 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 40 more)] === [2023-11-19 07:34:29,821 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:34:29,821 INFO L85 PathProgramCache]: Analyzing trace with hash 25163, now seen corresponding path program 1 times [2023-11-19 07:34:29,822 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-19 07:34:29,822 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [796818160] [2023-11-19 07:34:29,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:34:29,823 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 [2023-11-19 07:34:29,823 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cf1f7dc-fb55-46de-b9ed-6b4a32462956/bin/uautomizer-verify-uCwYo4JHxu/mathsat [2023-11-19 07:34:29,831 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cf1f7dc-fb55-46de-b9ed-6b4a32462956/bin/uautomizer-verify-uCwYo4JHxu/mathsat -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) [2023-11-19 07:34:29,832 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cf1f7dc-fb55-46de-b9ed-6b4a32462956/bin/uautomizer-verify-uCwYo4JHxu/mathsat -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 [2023-11-19 07:34:29,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:34:29,890 INFO L262 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-19 07:34:29,892 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:34:29,917 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 7 [2023-11-19 07:34:29,929 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:34:29,929 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-19 07:34:29,939 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:34:29,939 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-19 07:34:29,950 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:34:29,951 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-19 07:34:29,964 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:34:29,965 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-19 07:34:29,985 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:34:29,985 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1 [2023-11-19 07:34:29,997 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:34:29,997 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-19 07:34:30,010 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:34:30,011 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-19 07:34:30,034 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:34:30,035 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1 [2023-11-19 07:34:30,047 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:34:30,048 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-19 07:34:30,061 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:34:30,062 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-19 07:34:30,070 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:34:30,071 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-19 07:34:30,082 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:34:30,083 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-19 07:34:30,093 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:34:30,094 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-19 07:34:30,118 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:34:30,119 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1 [2023-11-19 07:34:30,131 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:34:30,132 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-19 07:34:30,141 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:34:30,142 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-19 07:34:30,152 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:34:30,153 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-19 07:34:30,175 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:34:30,176 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-19 07:34:30,197 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:34:30,198 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1 [2023-11-19 07:34:30,222 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:34:30,223 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1 [2023-11-19 07:34:30,234 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:34:30,235 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-19 07:34:30,259 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:34:30,260 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1 [2023-11-19 07:34:30,292 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:34:30,293 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 7 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2023-11-19 07:34:30,313 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:34:30,314 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:34:30,314 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-19 07:34:30,314 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [796818160] [2023-11-19 07:34:30,314 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [796818160] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:34:30,314 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:34:30,314 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-19 07:34:30,315 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [848772650] [2023-11-19 07:34:30,315 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:34:30,315 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:34:30,315 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-19 07:34:30,316 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:34:30,316 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:34:30,488 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 151 out of 378 [2023-11-19 07:34:30,489 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 44 transitions, 108 flow. Second operand has 3 states, 3 states have (on average 151.66666666666666) internal successors, (455), 3 states have internal predecessors, (455), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:34:30,490 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:34:30,490 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 151 of 378 [2023-11-19 07:34:30,490 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:34:30,988 INFO L124 PetriNetUnfolderBase]: 1817/2565 cut-off events. [2023-11-19 07:34:30,988 INFO L125 PetriNetUnfolderBase]: For 15/15 co-relation queries the response was YES. [2023-11-19 07:34:30,991 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5172 conditions, 2565 events. 1817/2565 cut-off events. For 15/15 co-relation queries the response was YES. Maximal size of possible extension queue 160. Compared 10307 event pairs, 1428 based on Foata normal form. 1/1029 useless extension candidates. Maximal degree in co-relation 5161. Up to 2565 conditions per place. [2023-11-19 07:34:31,008 INFO L140 encePairwiseOnDemand]: 375/378 looper letters, 42 selfloop transitions, 2 changer transitions 0/44 dead transitions. [2023-11-19 07:34:31,009 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 44 transitions, 196 flow [2023-11-19 07:34:31,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:34:31,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 07:34:31,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 498 transitions. [2023-11-19 07:34:31,012 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43915343915343913 [2023-11-19 07:34:31,012 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 498 transitions. [2023-11-19 07:34:31,012 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 498 transitions. [2023-11-19 07:34:31,013 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:34:31,013 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 498 transitions. [2023-11-19 07:34:31,015 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 166.0) internal successors, (498), 3 states have internal predecessors, (498), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:34:31,018 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 378.0) internal successors, (1512), 4 states have internal predecessors, (1512), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:34:31,020 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 378.0) internal successors, (1512), 4 states have internal predecessors, (1512), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:34:31,020 INFO L175 Difference]: Start difference. First operand has 46 places, 44 transitions, 108 flow. Second operand 3 states and 498 transitions. [2023-11-19 07:34:31,020 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 44 transitions, 196 flow [2023-11-19 07:34:31,021 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 44 transitions, 192 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-11-19 07:34:31,023 INFO L231 Difference]: Finished difference. Result has 48 places, 44 transitions, 112 flow [2023-11-19 07:34:31,023 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=378, PETRI_DIFFERENCE_MINUEND_FLOW=104, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=112, PETRI_PLACES=48, PETRI_TRANSITIONS=44} [2023-11-19 07:34:31,024 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, -9 predicate places. [2023-11-19 07:34:31,024 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 44 transitions, 112 flow [2023-11-19 07:34:31,025 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 151.66666666666666) internal successors, (455), 3 states have internal predecessors, (455), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:34:31,025 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:34:31,025 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-11-19 07:34:31,032 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cf1f7dc-fb55-46de-b9ed-6b4a32462956/bin/uautomizer-verify-uCwYo4JHxu/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Ended with exit code 0 [2023-11-19 07:34:31,227 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cf1f7dc-fb55-46de-b9ed-6b4a32462956/bin/uautomizer-verify-uCwYo4JHxu/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-19 07:34:31,228 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 40 more)] === [2023-11-19 07:34:31,228 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:34:31,228 INFO L85 PathProgramCache]: Analyzing trace with hash 782524, now seen corresponding path program 1 times [2023-11-19 07:34:31,229 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-19 07:34:31,229 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1422671262] [2023-11-19 07:34:31,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:34:31,229 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 [2023-11-19 07:34:31,229 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cf1f7dc-fb55-46de-b9ed-6b4a32462956/bin/uautomizer-verify-uCwYo4JHxu/mathsat [2023-11-19 07:34:31,231 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cf1f7dc-fb55-46de-b9ed-6b4a32462956/bin/uautomizer-verify-uCwYo4JHxu/mathsat -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) [2023-11-19 07:34:31,240 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cf1f7dc-fb55-46de-b9ed-6b4a32462956/bin/uautomizer-verify-uCwYo4JHxu/mathsat -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 [2023-11-19 07:34:31,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:34:31,312 INFO L262 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-19 07:34:31,313 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:34:31,340 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 7 [2023-11-19 07:34:31,356 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:34:31,357 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-19 07:34:31,381 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:34:31,382 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1 [2023-11-19 07:34:31,394 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:34:31,395 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-19 07:34:31,426 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:34:31,427 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1 [2023-11-19 07:34:31,462 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:34:31,463 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 7 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2023-11-19 07:34:31,488 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:34:31,489 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1 [2023-11-19 07:34:31,501 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:34:31,502 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-19 07:34:31,511 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:34:31,512 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-19 07:34:31,522 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:34:31,523 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-19 07:34:31,536 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:34:31,537 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-19 07:34:31,545 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:34:31,545 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-19 07:34:31,556 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:34:31,557 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-19 07:34:31,569 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:34:31,569 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-19 07:34:31,582 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:34:31,583 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-19 07:34:31,590 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:34:31,590 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-19 07:34:31,616 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:34:31,617 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1 [2023-11-19 07:34:31,628 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:34:31,629 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-19 07:34:31,640 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:34:31,641 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-19 07:34:31,651 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:34:31,652 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-19 07:34:31,673 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:34:31,674 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1 [2023-11-19 07:34:31,685 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:34:31,685 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-19 07:34:31,696 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:34:31,697 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-19 07:34:31,707 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:34:31,708 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-19 07:34:31,790 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:34:31,790 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:34:32,014 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:34:32,015 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-19 07:34:32,015 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1422671262] [2023-11-19 07:34:32,015 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1422671262] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 07:34:32,015 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-19 07:34:32,015 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2] total 4 [2023-11-19 07:34:32,015 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1238203780] [2023-11-19 07:34:32,016 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-19 07:34:32,016 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-19 07:34:32,016 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-19 07:34:32,017 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-19 07:34:32,017 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-11-19 07:34:33,047 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 146 out of 378 [2023-11-19 07:34:33,049 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 44 transitions, 112 flow. Second operand has 6 states, 6 states have (on average 147.0) internal successors, (882), 6 states have internal predecessors, (882), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:34:33,049 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:34:33,049 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 146 of 378 [2023-11-19 07:34:33,049 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:34:34,081 INFO L124 PetriNetUnfolderBase]: 1826/2577 cut-off events. [2023-11-19 07:34:34,081 INFO L125 PetriNetUnfolderBase]: For 15/15 co-relation queries the response was YES. [2023-11-19 07:34:34,085 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5211 conditions, 2577 events. 1826/2577 cut-off events. For 15/15 co-relation queries the response was YES. Maximal size of possible extension queue 160. Compared 10344 event pairs, 1428 based on Foata normal form. 3/1034 useless extension candidates. Maximal degree in co-relation 5198. Up to 2574 conditions per place. [2023-11-19 07:34:34,122 INFO L140 encePairwiseOnDemand]: 372/378 looper letters, 42 selfloop transitions, 14 changer transitions 0/56 dead transitions. [2023-11-19 07:34:34,122 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 56 transitions, 272 flow [2023-11-19 07:34:34,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-19 07:34:34,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-19 07:34:34,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 935 transitions. [2023-11-19 07:34:34,128 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4122574955908289 [2023-11-19 07:34:34,128 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 935 transitions. [2023-11-19 07:34:34,128 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 935 transitions. [2023-11-19 07:34:34,129 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:34:34,129 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 935 transitions. [2023-11-19 07:34:34,133 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 155.83333333333334) internal successors, (935), 6 states have internal predecessors, (935), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:34:34,139 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 378.0) internal successors, (2646), 7 states have internal predecessors, (2646), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:34:34,141 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 378.0) internal successors, (2646), 7 states have internal predecessors, (2646), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:34:34,142 INFO L175 Difference]: Start difference. First operand has 48 places, 44 transitions, 112 flow. Second operand 6 states and 935 transitions. [2023-11-19 07:34:34,142 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 56 transitions, 272 flow [2023-11-19 07:34:34,143 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 56 transitions, 268 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-19 07:34:34,145 INFO L231 Difference]: Finished difference. Result has 54 places, 56 transitions, 213 flow [2023-11-19 07:34:34,145 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=378, PETRI_DIFFERENCE_MINUEND_FLOW=108, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=213, PETRI_PLACES=54, PETRI_TRANSITIONS=56} [2023-11-19 07:34:34,147 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, -3 predicate places. [2023-11-19 07:34:34,148 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 56 transitions, 213 flow [2023-11-19 07:34:34,149 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 147.0) internal successors, (882), 6 states have internal predecessors, (882), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:34:34,149 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:34:34,149 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1] [2023-11-19 07:34:34,162 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cf1f7dc-fb55-46de-b9ed-6b4a32462956/bin/uautomizer-verify-uCwYo4JHxu/mathsat -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 [2023-11-19 07:34:34,352 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cf1f7dc-fb55-46de-b9ed-6b4a32462956/bin/uautomizer-verify-uCwYo4JHxu/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-19 07:34:34,353 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 40 more)] === [2023-11-19 07:34:34,353 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:34:34,353 INFO L85 PathProgramCache]: Analyzing trace with hash 24260799, now seen corresponding path program 1 times [2023-11-19 07:34:34,354 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-19 07:34:34,354 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [452654975] [2023-11-19 07:34:34,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:34:34,354 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 [2023-11-19 07:34:34,354 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cf1f7dc-fb55-46de-b9ed-6b4a32462956/bin/uautomizer-verify-uCwYo4JHxu/mathsat [2023-11-19 07:34:34,356 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cf1f7dc-fb55-46de-b9ed-6b4a32462956/bin/uautomizer-verify-uCwYo4JHxu/mathsat -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) [2023-11-19 07:34:34,363 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cf1f7dc-fb55-46de-b9ed-6b4a32462956/bin/uautomizer-verify-uCwYo4JHxu/mathsat -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 [2023-11-19 07:34:34,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:34:34,460 INFO L262 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 16 conjunts are in the unsatisfiable core [2023-11-19 07:34:34,466 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:34:34,508 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:34:34,510 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:34:34,514 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 13 [2023-11-19 07:34:34,535 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:34:34,541 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 15 [2023-11-19 07:34:34,581 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:34:34,584 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:34:34,648 INFO L349 Elim1Store]: treesize reduction 19, result has 13.6 percent of original size [2023-11-19 07:34:34,649 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 5 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 11 [2023-11-19 07:34:34,658 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:34:34,660 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:34:34,662 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:34:34,669 INFO L378 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 11 treesize of output 7 [2023-11-19 07:34:34,692 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:34:34,694 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:34:34,712 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 13 [2023-11-19 07:34:34,990 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:34:34,990 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:34:35,344 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:34:35,344 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-19 07:34:35,345 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [452654975] [2023-11-19 07:34:35,345 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [452654975] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 07:34:35,345 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-19 07:34:35,346 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 6 [2023-11-19 07:34:35,346 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1724336930] [2023-11-19 07:34:35,346 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-19 07:34:35,346 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-19 07:34:35,347 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-19 07:34:35,347 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-19 07:34:35,351 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2023-11-19 07:34:36,628 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 139 out of 378 [2023-11-19 07:34:36,630 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 56 transitions, 213 flow. Second operand has 8 states, 8 states have (on average 140.0) internal successors, (1120), 8 states have internal predecessors, (1120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:34:36,630 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:34:36,631 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 139 of 378 [2023-11-19 07:34:36,631 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:34:38,492 INFO L124 PetriNetUnfolderBase]: 1827/2582 cut-off events. [2023-11-19 07:34:38,492 INFO L125 PetriNetUnfolderBase]: For 31/31 co-relation queries the response was YES. [2023-11-19 07:34:38,498 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5266 conditions, 2582 events. 1827/2582 cut-off events. For 31/31 co-relation queries the response was YES. Maximal size of possible extension queue 160. Compared 10388 event pairs, 1428 based on Foata normal form. 0/1037 useless extension candidates. Maximal degree in co-relation 5232. Up to 2570 conditions per place. [2023-11-19 07:34:38,526 INFO L140 encePairwiseOnDemand]: 372/378 looper letters, 44 selfloop transitions, 17 changer transitions 0/61 dead transitions. [2023-11-19 07:34:38,526 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 61 transitions, 370 flow [2023-11-19 07:34:38,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-19 07:34:38,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-11-19 07:34:38,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1178 transitions. [2023-11-19 07:34:38,533 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38955026455026454 [2023-11-19 07:34:38,533 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1178 transitions. [2023-11-19 07:34:38,533 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1178 transitions. [2023-11-19 07:34:38,534 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:34:38,535 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1178 transitions. [2023-11-19 07:34:38,538 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 147.25) internal successors, (1178), 8 states have internal predecessors, (1178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:34:38,545 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 378.0) internal successors, (3402), 9 states have internal predecessors, (3402), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:34:38,547 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 378.0) internal successors, (3402), 9 states have internal predecessors, (3402), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:34:38,547 INFO L175 Difference]: Start difference. First operand has 54 places, 56 transitions, 213 flow. Second operand 8 states and 1178 transitions. [2023-11-19 07:34:38,547 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 61 transitions, 370 flow [2023-11-19 07:34:38,553 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 61 transitions, 322 flow, removed 22 selfloop flow, removed 2 redundant places. [2023-11-19 07:34:38,554 INFO L231 Difference]: Finished difference. Result has 62 places, 60 transitions, 247 flow [2023-11-19 07:34:38,555 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=378, PETRI_DIFFERENCE_MINUEND_FLOW=156, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=247, PETRI_PLACES=62, PETRI_TRANSITIONS=60} [2023-11-19 07:34:38,558 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 5 predicate places. [2023-11-19 07:34:38,558 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 60 transitions, 247 flow [2023-11-19 07:34:38,559 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 140.0) internal successors, (1120), 8 states have internal predecessors, (1120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:34:38,559 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:34:38,559 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1] [2023-11-19 07:34:38,566 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cf1f7dc-fb55-46de-b9ed-6b4a32462956/bin/uautomizer-verify-uCwYo4JHxu/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Ended with exit code 0 [2023-11-19 07:34:38,761 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cf1f7dc-fb55-46de-b9ed-6b4a32462956/bin/uautomizer-verify-uCwYo4JHxu/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-19 07:34:38,762 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 40 more)] === [2023-11-19 07:34:38,762 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:34:38,762 INFO L85 PathProgramCache]: Analyzing trace with hash 24260800, now seen corresponding path program 1 times [2023-11-19 07:34:38,763 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-19 07:34:38,763 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [30890701] [2023-11-19 07:34:38,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:34:38,763 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 [2023-11-19 07:34:38,763 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cf1f7dc-fb55-46de-b9ed-6b4a32462956/bin/uautomizer-verify-uCwYo4JHxu/mathsat [2023-11-19 07:34:38,764 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cf1f7dc-fb55-46de-b9ed-6b4a32462956/bin/uautomizer-verify-uCwYo4JHxu/mathsat -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) [2023-11-19 07:34:38,767 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cf1f7dc-fb55-46de-b9ed-6b4a32462956/bin/uautomizer-verify-uCwYo4JHxu/mathsat -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 [2023-11-19 07:34:38,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:34:38,875 INFO L262 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-19 07:34:38,877 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:34:38,943 INFO L349 Elim1Store]: treesize reduction 103, result has 12.7 percent of original size [2023-11-19 07:34:38,943 INFO L378 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 [2023-11-19 07:34:39,005 INFO L349 Elim1Store]: treesize reduction 60, result has 20.0 percent of original size [2023-11-19 07:34:39,005 INFO L378 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 [2023-11-19 07:34:39,212 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-19 07:34:39,213 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:34:39,213 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-19 07:34:39,213 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [30890701] [2023-11-19 07:34:39,213 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [30890701] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:34:39,214 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:34:39,214 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-19 07:34:39,214 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [925566087] [2023-11-19 07:34:39,214 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:34:39,215 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:34:39,215 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-19 07:34:39,217 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:34:39,217 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:34:39,438 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 152 out of 378 [2023-11-19 07:34:39,439 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 60 transitions, 247 flow. Second operand has 3 states, 3 states have (on average 153.0) internal successors, (459), 3 states have internal predecessors, (459), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:34:39,439 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:34:39,439 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 152 of 378 [2023-11-19 07:34:39,440 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:34:39,951 INFO L124 PetriNetUnfolderBase]: 1448/2076 cut-off events. [2023-11-19 07:34:39,952 INFO L125 PetriNetUnfolderBase]: For 42/42 co-relation queries the response was YES. [2023-11-19 07:34:39,956 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4248 conditions, 2076 events. 1448/2076 cut-off events. For 42/42 co-relation queries the response was YES. Maximal size of possible extension queue 124. Compared 8137 event pairs, 1128 based on Foata normal form. 0/891 useless extension candidates. Maximal degree in co-relation 4207. Up to 2076 conditions per place. [2023-11-19 07:34:39,968 INFO L140 encePairwiseOnDemand]: 375/378 looper letters, 52 selfloop transitions, 1 changer transitions 0/53 dead transitions. [2023-11-19 07:34:39,969 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 53 transitions, 312 flow [2023-11-19 07:34:39,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:34:39,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 07:34:39,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 499 transitions. [2023-11-19 07:34:39,972 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4400352733686067 [2023-11-19 07:34:39,972 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 499 transitions. [2023-11-19 07:34:39,973 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 499 transitions. [2023-11-19 07:34:39,973 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:34:39,973 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 499 transitions. [2023-11-19 07:34:39,975 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 166.33333333333334) internal successors, (499), 3 states have internal predecessors, (499), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:34:39,977 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 378.0) internal successors, (1512), 4 states have internal predecessors, (1512), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:34:39,978 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 378.0) internal successors, (1512), 4 states have internal predecessors, (1512), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:34:39,978 INFO L175 Difference]: Start difference. First operand has 62 places, 60 transitions, 247 flow. Second operand 3 states and 499 transitions. [2023-11-19 07:34:39,978 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 53 transitions, 312 flow [2023-11-19 07:34:39,980 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 53 transitions, 281 flow, removed 8 selfloop flow, removed 4 redundant places. [2023-11-19 07:34:39,983 INFO L231 Difference]: Finished difference. Result has 58 places, 53 transitions, 177 flow [2023-11-19 07:34:39,983 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=378, PETRI_DIFFERENCE_MINUEND_FLOW=175, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=177, PETRI_PLACES=58, PETRI_TRANSITIONS=53} [2023-11-19 07:34:39,986 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 1 predicate places. [2023-11-19 07:34:39,986 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 53 transitions, 177 flow [2023-11-19 07:34:39,987 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 153.0) internal successors, (459), 3 states have internal predecessors, (459), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:34:39,987 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:34:39,987 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-11-19 07:34:39,992 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cf1f7dc-fb55-46de-b9ed-6b4a32462956/bin/uautomizer-verify-uCwYo4JHxu/mathsat -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 [2023-11-19 07:34:40,192 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cf1f7dc-fb55-46de-b9ed-6b4a32462956/bin/uautomizer-verify-uCwYo4JHxu/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-19 07:34:40,193 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 40 more)] === [2023-11-19 07:34:40,193 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:34:40,193 INFO L85 PathProgramCache]: Analyzing trace with hash 752103659, now seen corresponding path program 1 times [2023-11-19 07:34:40,194 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-19 07:34:40,194 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [751143020] [2023-11-19 07:34:40,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:34:40,195 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 [2023-11-19 07:34:40,195 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cf1f7dc-fb55-46de-b9ed-6b4a32462956/bin/uautomizer-verify-uCwYo4JHxu/mathsat [2023-11-19 07:34:40,196 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cf1f7dc-fb55-46de-b9ed-6b4a32462956/bin/uautomizer-verify-uCwYo4JHxu/mathsat -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) [2023-11-19 07:34:40,237 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cf1f7dc-fb55-46de-b9ed-6b4a32462956/bin/uautomizer-verify-uCwYo4JHxu/mathsat -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 [2023-11-19 07:34:40,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:34:40,306 INFO L262 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-19 07:34:40,307 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:34:40,322 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:34:40,356 INFO L349 Elim1Store]: treesize reduction 37, result has 15.9 percent of original size [2023-11-19 07:34:40,357 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 22 [2023-11-19 07:34:40,371 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:34:40,392 INFO L349 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2023-11-19 07:34:40,393 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 22 [2023-11-19 07:34:40,430 INFO L349 Elim1Store]: treesize reduction 37, result has 15.9 percent of original size [2023-11-19 07:34:40,431 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 22 treesize of output 22 [2023-11-19 07:34:40,452 INFO L349 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2023-11-19 07:34:40,452 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 17 treesize of output 22 [2023-11-19 07:34:40,479 INFO L349 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2023-11-19 07:34:40,480 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 17 treesize of output 22 [2023-11-19 07:34:40,492 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:34:40,515 INFO L349 Elim1Store]: treesize reduction 37, result has 15.9 percent of original size [2023-11-19 07:34:40,516 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 22 [2023-11-19 07:34:40,547 INFO L349 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2023-11-19 07:34:40,548 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 22 [2023-11-19 07:34:40,582 INFO L349 Elim1Store]: treesize reduction 37, result has 15.9 percent of original size [2023-11-19 07:34:40,583 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 22 [2023-11-19 07:34:40,767 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-19 07:34:40,767 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:34:40,767 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-19 07:34:40,767 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [751143020] [2023-11-19 07:34:40,768 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [751143020] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:34:40,768 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:34:40,768 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-19 07:34:40,768 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1385392980] [2023-11-19 07:34:40,768 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:34:40,769 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:34:40,769 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-19 07:34:40,769 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:34:40,770 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:34:40,963 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 149 out of 378 [2023-11-19 07:34:40,963 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 53 transitions, 177 flow. Second operand has 3 states, 3 states have (on average 150.66666666666666) internal successors, (452), 3 states have internal predecessors, (452), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:34:40,964 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:34:40,964 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 149 of 378 [2023-11-19 07:34:40,964 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:34:41,481 INFO L124 PetriNetUnfolderBase]: 1393/1991 cut-off events. [2023-11-19 07:34:41,482 INFO L125 PetriNetUnfolderBase]: For 37/37 co-relation queries the response was YES. [2023-11-19 07:34:41,486 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4063 conditions, 1991 events. 1393/1991 cut-off events. For 37/37 co-relation queries the response was YES. Maximal size of possible extension queue 122. Compared 7720 event pairs, 1084 based on Foata normal form. 0/869 useless extension candidates. Maximal degree in co-relation 4047. Up to 1991 conditions per place. [2023-11-19 07:34:41,502 INFO L140 encePairwiseOnDemand]: 375/378 looper letters, 50 selfloop transitions, 1 changer transitions 0/51 dead transitions. [2023-11-19 07:34:41,502 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 51 transitions, 275 flow [2023-11-19 07:34:41,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:34:41,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 07:34:41,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 488 transitions. [2023-11-19 07:34:41,506 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43033509700176364 [2023-11-19 07:34:41,506 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 488 transitions. [2023-11-19 07:34:41,506 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 488 transitions. [2023-11-19 07:34:41,507 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:34:41,507 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 488 transitions. [2023-11-19 07:34:41,509 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 162.66666666666666) internal successors, (488), 3 states have internal predecessors, (488), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:34:41,512 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 378.0) internal successors, (1512), 4 states have internal predecessors, (1512), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:34:41,513 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 378.0) internal successors, (1512), 4 states have internal predecessors, (1512), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:34:41,513 INFO L175 Difference]: Start difference. First operand has 58 places, 53 transitions, 177 flow. Second operand 3 states and 488 transitions. [2023-11-19 07:34:41,513 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 51 transitions, 275 flow [2023-11-19 07:34:41,515 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 51 transitions, 274 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-19 07:34:41,517 INFO L231 Difference]: Finished difference. Result has 57 places, 51 transitions, 174 flow [2023-11-19 07:34:41,518 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=378, PETRI_DIFFERENCE_MINUEND_FLOW=172, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=174, PETRI_PLACES=57, PETRI_TRANSITIONS=51} [2023-11-19 07:34:41,518 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 0 predicate places. [2023-11-19 07:34:41,519 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 51 transitions, 174 flow [2023-11-19 07:34:41,519 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 150.66666666666666) internal successors, (452), 3 states have internal predecessors, (452), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:34:41,519 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:34:41,520 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-11-19 07:34:41,531 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cf1f7dc-fb55-46de-b9ed-6b4a32462956/bin/uautomizer-verify-uCwYo4JHxu/mathsat -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 [2023-11-19 07:34:41,722 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cf1f7dc-fb55-46de-b9ed-6b4a32462956/bin/uautomizer-verify-uCwYo4JHxu/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-19 07:34:41,723 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 40 more)] === [2023-11-19 07:34:41,723 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:34:41,723 INFO L85 PathProgramCache]: Analyzing trace with hash 752103660, now seen corresponding path program 1 times [2023-11-19 07:34:41,724 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-19 07:34:41,724 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [719137403] [2023-11-19 07:34:41,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:34:41,724 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 [2023-11-19 07:34:41,724 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cf1f7dc-fb55-46de-b9ed-6b4a32462956/bin/uautomizer-verify-uCwYo4JHxu/mathsat [2023-11-19 07:34:41,725 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cf1f7dc-fb55-46de-b9ed-6b4a32462956/bin/uautomizer-verify-uCwYo4JHxu/mathsat -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) [2023-11-19 07:34:41,727 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cf1f7dc-fb55-46de-b9ed-6b4a32462956/bin/uautomizer-verify-uCwYo4JHxu/mathsat -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 [2023-11-19 07:34:41,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:34:41,869 INFO L262 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-19 07:34:41,871 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:34:41,897 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:34:41,931 INFO L349 Elim1Store]: treesize reduction 13, result has 40.9 percent of original size [2023-11-19 07:34:41,932 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 17 [2023-11-19 07:34:41,967 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:34:41,979 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:34:41,980 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 13 [2023-11-19 07:34:41,987 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:34:42,012 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:34:42,023 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:34:42,024 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 13 [2023-11-19 07:34:42,031 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:34:42,035 INFO L378 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 [2023-11-19 07:34:42,056 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:34:42,076 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:34:42,100 INFO L349 Elim1Store]: treesize reduction 9, result has 35.7 percent of original size [2023-11-19 07:34:42,100 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 13 [2023-11-19 07:34:42,112 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2023-11-19 07:34:42,135 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:34:42,144 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:34:42,145 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 13 [2023-11-19 07:34:42,151 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:34:42,180 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:34:42,201 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:34:42,222 INFO L349 Elim1Store]: treesize reduction 9, result has 35.7 percent of original size [2023-11-19 07:34:42,222 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 13 [2023-11-19 07:34:42,229 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:34:42,238 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2023-11-19 07:34:42,278 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:34:42,294 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:34:42,295 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 13 [2023-11-19 07:34:42,305 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:34:42,307 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:34:42,315 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2023-11-19 07:34:42,341 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:34:42,363 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:34:42,386 INFO L349 Elim1Store]: treesize reduction 9, result has 35.7 percent of original size [2023-11-19 07:34:42,386 INFO L378 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 1 case distinctions, treesize of input 21 treesize of output 13 [2023-11-19 07:34:42,398 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:34:42,406 INFO L378 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 [2023-11-19 07:34:42,914 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:34:42,914 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:34:43,177 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:34:43,178 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-19 07:34:43,178 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [719137403] [2023-11-19 07:34:43,178 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [719137403] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 07:34:43,178 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-19 07:34:43,178 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 6 [2023-11-19 07:34:43,178 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [126854049] [2023-11-19 07:34:43,179 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-19 07:34:43,179 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-19 07:34:43,179 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-19 07:34:43,180 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-19 07:34:43,180 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-11-19 07:34:45,193 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-19 07:34:46,171 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 141 out of 378 [2023-11-19 07:34:46,172 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 51 transitions, 174 flow. Second operand has 8 states, 8 states have (on average 142.25) internal successors, (1138), 8 states have internal predecessors, (1138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:34:46,172 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:34:46,172 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 141 of 378 [2023-11-19 07:34:46,172 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand