./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/weaver/popl20-more-min-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-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36f0d8bc-1180-44d3-9769-a6486706b7d6/bin/uautomizer-verify-uCwYo4JHxu/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36f0d8bc-1180-44d3-9769-a6486706b7d6/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_36f0d8bc-1180-44d3-9769-a6486706b7d6/bin/uautomizer-verify-uCwYo4JHxu/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36f0d8bc-1180-44d3-9769-a6486706b7d6/bin/uautomizer-verify-uCwYo4JHxu/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/weaver/popl20-more-min-array-hom.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36f0d8bc-1180-44d3-9769-a6486706b7d6/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_36f0d8bc-1180-44d3-9769-a6486706b7d6/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 0224e82797c7b26c7800eaf85be5e5678e7961d21aa4e2312eda2860d261b33a --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 07:43:43,106 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 07:43:43,219 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36f0d8bc-1180-44d3-9769-a6486706b7d6/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2023-11-19 07:43:43,223 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 07:43:43,224 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 07:43:43,246 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 07:43:43,247 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 07:43:43,247 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 07:43:43,248 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 07:43:43,249 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 07:43:43,249 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-19 07:43:43,250 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-19 07:43:43,250 INFO L153 SettingsManager]: * Use SBE=true [2023-11-19 07:43:43,257 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 07:43:43,258 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-19 07:43:43,258 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 07:43:43,260 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-19 07:43:43,261 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 07:43:43,261 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-19 07:43:43,261 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-19 07:43:43,262 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-19 07:43:43,262 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 07:43:43,263 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-19 07:43:43,263 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-19 07:43:43,264 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-19 07:43:43,264 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 07:43:43,264 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 07:43:43,265 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-19 07:43:43,265 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 07:43:43,266 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:43:43,266 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 07:43:43,267 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 07:43:43,267 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-19 07:43:43,267 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 07:43:43,267 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-19 07:43:43,268 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-19 07:43:43,268 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 07:43:43,268 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-19 07:43:43,268 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_36f0d8bc-1180-44d3-9769-a6486706b7d6/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36f0d8bc-1180-44d3-9769-a6486706b7d6/bin/uautomizer-verify-uCwYo4JHxu Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0224e82797c7b26c7800eaf85be5e5678e7961d21aa4e2312eda2860d261b33a [2023-11-19 07:43:43,540 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 07:43:43,562 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 07:43:43,565 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 07:43:43,581 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 07:43:43,582 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 07:43:43,583 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36f0d8bc-1180-44d3-9769-a6486706b7d6/bin/uautomizer-verify-uCwYo4JHxu/../../sv-benchmarks/c/weaver/popl20-more-min-array-hom.wvr.c [2023-11-19 07:43:46,823 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 07:43:47,040 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 07:43:47,041 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36f0d8bc-1180-44d3-9769-a6486706b7d6/sv-benchmarks/c/weaver/popl20-more-min-array-hom.wvr.c [2023-11-19 07:43:47,050 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36f0d8bc-1180-44d3-9769-a6486706b7d6/bin/uautomizer-verify-uCwYo4JHxu/data/815ecc4c6/926d91869bf54048acb4acb39b2e1a4f/FLAG072ead5cb [2023-11-19 07:43:47,065 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36f0d8bc-1180-44d3-9769-a6486706b7d6/bin/uautomizer-verify-uCwYo4JHxu/data/815ecc4c6/926d91869bf54048acb4acb39b2e1a4f [2023-11-19 07:43:47,068 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 07:43:47,070 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 07:43:47,071 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 07:43:47,072 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 07:43:47,080 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 07:43:47,081 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:43:47" (1/1) ... [2023-11-19 07:43:47,082 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@20f5679f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:43:47, skipping insertion in model container [2023-11-19 07:43:47,082 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:43:47" (1/1) ... [2023-11-19 07:43:47,114 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 07:43:47,308 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:43:47,320 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 07:43:47,321 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@48977e66 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:43:47, skipping insertion in model container [2023-11-19 07:43:47,321 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 07:43:47,322 INFO L186 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2023-11-19 07:43:47,323 INFO L158 Benchmark]: Toolchain (without parser) took 252.78ms. Allocated memory is still 140.5MB. Free memory was 101.0MB in the beginning and 90.9MB in the end (delta: 10.2MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-11-19 07:43:47,324 INFO L158 Benchmark]: CDTParser took 0.24ms. Allocated memory is still 140.5MB. Free memory was 115.3MB in the beginning and 115.2MB in the end (delta: 25.8kB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-19 07:43:47,325 INFO L158 Benchmark]: CACSL2BoogieTranslator took 250.11ms. Allocated memory is still 140.5MB. Free memory was 101.0MB in the beginning and 90.9MB in the end (delta: 10.2MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-11-19 07:43:47,326 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24ms. Allocated memory is still 140.5MB. Free memory was 115.3MB in the beginning and 115.2MB in the end (delta: 25.8kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 250.11ms. Allocated memory is still 140.5MB. Free memory was 101.0MB in the beginning and 90.9MB in the end (delta: 10.2MB). 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-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36f0d8bc-1180-44d3-9769-a6486706b7d6/bin/uautomizer-verify-uCwYo4JHxu/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36f0d8bc-1180-44d3-9769-a6486706b7d6/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_36f0d8bc-1180-44d3-9769-a6486706b7d6/bin/uautomizer-verify-uCwYo4JHxu/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36f0d8bc-1180-44d3-9769-a6486706b7d6/bin/uautomizer-verify-uCwYo4JHxu/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/weaver/popl20-more-min-array-hom.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36f0d8bc-1180-44d3-9769-a6486706b7d6/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_36f0d8bc-1180-44d3-9769-a6486706b7d6/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 0224e82797c7b26c7800eaf85be5e5678e7961d21aa4e2312eda2860d261b33a --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 07:43:49,944 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 07:43:50,080 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36f0d8bc-1180-44d3-9769-a6486706b7d6/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2023-11-19 07:43:50,090 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 07:43:50,091 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 07:43:50,137 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 07:43:50,138 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 07:43:50,139 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 07:43:50,140 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 07:43:50,145 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 07:43:50,145 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-19 07:43:50,146 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-19 07:43:50,146 INFO L153 SettingsManager]: * Use SBE=true [2023-11-19 07:43:50,148 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 07:43:50,149 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-19 07:43:50,149 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 07:43:50,149 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-19 07:43:50,150 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 07:43:50,150 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-19 07:43:50,151 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-19 07:43:50,152 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-19 07:43:50,152 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 07:43:50,153 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-19 07:43:50,153 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-11-19 07:43:50,154 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-11-19 07:43:50,154 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-19 07:43:50,154 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-19 07:43:50,155 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 07:43:50,156 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 07:43:50,156 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-19 07:43:50,157 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 07:43:50,158 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:43:50,158 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 07:43:50,158 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 07:43:50,159 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-11-19 07:43:50,159 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-11-19 07:43:50,159 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-19 07:43:50,159 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-19 07:43:50,160 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 07:43:50,161 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-11-19 07:43:50,161 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-19 07:43:50,161 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_36f0d8bc-1180-44d3-9769-a6486706b7d6/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36f0d8bc-1180-44d3-9769-a6486706b7d6/bin/uautomizer-verify-uCwYo4JHxu Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0224e82797c7b26c7800eaf85be5e5678e7961d21aa4e2312eda2860d261b33a [2023-11-19 07:43:50,600 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 07:43:50,626 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 07:43:50,629 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 07:43:50,631 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 07:43:50,631 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 07:43:50,633 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36f0d8bc-1180-44d3-9769-a6486706b7d6/bin/uautomizer-verify-uCwYo4JHxu/../../sv-benchmarks/c/weaver/popl20-more-min-array-hom.wvr.c [2023-11-19 07:43:53,885 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 07:43:54,143 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 07:43:54,143 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36f0d8bc-1180-44d3-9769-a6486706b7d6/sv-benchmarks/c/weaver/popl20-more-min-array-hom.wvr.c [2023-11-19 07:43:54,154 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36f0d8bc-1180-44d3-9769-a6486706b7d6/bin/uautomizer-verify-uCwYo4JHxu/data/8ca8a64f7/2f24d8f74d1f413892788297b5d6584b/FLAGb1a3ce86b [2023-11-19 07:43:54,175 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36f0d8bc-1180-44d3-9769-a6486706b7d6/bin/uautomizer-verify-uCwYo4JHxu/data/8ca8a64f7/2f24d8f74d1f413892788297b5d6584b [2023-11-19 07:43:54,181 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 07:43:54,183 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 07:43:54,187 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 07:43:54,187 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 07:43:54,192 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 07:43:54,193 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:43:54" (1/1) ... [2023-11-19 07:43:54,194 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@34d413bf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:43:54, skipping insertion in model container [2023-11-19 07:43:54,194 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:43:54" (1/1) ... [2023-11-19 07:43:54,230 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 07:43:54,466 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:43:54,501 INFO L199 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2023-11-19 07:43:54,519 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 07:43:54,563 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:43:54,579 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 07:43:54,636 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:43:54,660 WARN L675 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 07:43:54,660 WARN L675 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 07:43:54,669 INFO L206 MainTranslator]: Completed translation [2023-11-19 07:43:54,670 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:43:54 WrapperNode [2023-11-19 07:43:54,670 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 07:43:54,672 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 07:43:54,672 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 07:43:54,672 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 07:43:54,682 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:43:54" (1/1) ... [2023-11-19 07:43:54,714 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:43:54" (1/1) ... [2023-11-19 07:43:54,756 INFO L138 Inliner]: procedures = 26, calls = 44, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 104 [2023-11-19 07:43:54,757 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 07:43:54,759 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 07:43:54,759 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 07:43:54,759 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 07:43:54,770 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:43:54" (1/1) ... [2023-11-19 07:43:54,771 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:43:54" (1/1) ... [2023-11-19 07:43:54,795 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:43:54" (1/1) ... [2023-11-19 07:43:54,795 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:43:54" (1/1) ... [2023-11-19 07:43:54,807 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:43:54" (1/1) ... [2023-11-19 07:43:54,826 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:43:54" (1/1) ... [2023-11-19 07:43:54,829 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:43:54" (1/1) ... [2023-11-19 07:43:54,834 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:43:54" (1/1) ... [2023-11-19 07:43:54,838 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 07:43:54,842 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 07:43:54,843 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 07:43:54,844 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 07:43:54,845 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:43:54" (1/1) ... [2023-11-19 07:43:54,851 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:43:54,867 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36f0d8bc-1180-44d3-9769-a6486706b7d6/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:43:54,880 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36f0d8bc-1180-44d3-9769-a6486706b7d6/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 07:43:54,923 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36f0d8bc-1180-44d3-9769-a6486706b7d6/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 07:43:54,939 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 07:43:54,939 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2023-11-19 07:43:54,940 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-19 07:43:54,940 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2023-11-19 07:43:54,940 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-11-19 07:43:54,941 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-11-19 07:43:54,941 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-11-19 07:43:54,941 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-11-19 07:43:54,941 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-11-19 07:43:54,943 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-11-19 07:43:54,943 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-19 07:43:54,944 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-19 07:43:54,944 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-19 07:43:54,944 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 07:43:54,944 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 07:43:54,945 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-19 07:43:54,945 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2023-11-19 07:43:54,947 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 07:43:55,120 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 07:43:55,123 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 07:43:55,649 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 07:43:55,851 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 07:43:55,855 INFO L302 CfgBuilder]: Removed 4 assume(true) statements. [2023-11-19 07:43:55,862 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:43:55 BoogieIcfgContainer [2023-11-19 07:43:55,863 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 07:43:55,866 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 07:43:55,867 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 07:43:55,870 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 07:43:55,870 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 07:43:54" (1/3) ... [2023-11-19 07:43:55,872 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@56e88adc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:43:55, skipping insertion in model container [2023-11-19 07:43:55,872 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:43:54" (2/3) ... [2023-11-19 07:43:55,874 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@56e88adc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:43:55, skipping insertion in model container [2023-11-19 07:43:55,874 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:43:55" (3/3) ... [2023-11-19 07:43:55,876 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-more-min-array-hom.wvr.c [2023-11-19 07:43:55,897 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 07:43:55,897 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 28 error locations. [2023-11-19 07:43:55,897 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-19 07:43:56,031 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-11-19 07:43:56,088 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 188 places, 192 transitions, 405 flow [2023-11-19 07:43:56,210 INFO L124 PetriNetUnfolderBase]: 14/189 cut-off events. [2023-11-19 07:43:56,211 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-11-19 07:43:56,221 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 07:43:56,221 INFO L82 GeneralOperation]: Start removeDead. Operand has 188 places, 192 transitions, 405 flow [2023-11-19 07:43:56,235 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 180 places, 184 transitions, 386 flow [2023-11-19 07:43:56,239 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-19 07:43:56,250 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 180 places, 184 transitions, 386 flow [2023-11-19 07:43:56,253 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 180 places, 184 transitions, 386 flow [2023-11-19 07:43:56,253 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 180 places, 184 transitions, 386 flow [2023-11-19 07:43:56,307 INFO L124 PetriNetUnfolderBase]: 14/184 cut-off events. [2023-11-19 07:43:56,307 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-11-19 07:43:56,309 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 07:43:56,313 INFO L119 LiptonReduction]: Number of co-enabled transitions 3472 [2023-11-19 07:44:24,685 INFO L134 LiptonReduction]: Checked pairs total: 4035 [2023-11-19 07:44:24,686 INFO L136 LiptonReduction]: Total number of compositions: 186 [2023-11-19 07:44:24,702 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 07:44:24,709 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;@75d3ea30, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-19 07:44:24,709 INFO L358 AbstractCegarLoop]: Starting to check reachability of 43 error locations. [2023-11-19 07:44:24,712 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-19 07:44:24,712 INFO L124 PetriNetUnfolderBase]: 1/2 cut-off events. [2023-11-19 07:44:24,713 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-19 07:44:24,713 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:44:24,714 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-11-19 07:44:24,714 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 07:44:24,719 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:44:24,720 INFO L85 PathProgramCache]: Analyzing trace with hash 25164, now seen corresponding path program 1 times [2023-11-19 07:44:24,732 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-19 07:44:24,733 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [463511594] [2023-11-19 07:44:24,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:44:24,734 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 07:44:24,734 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36f0d8bc-1180-44d3-9769-a6486706b7d6/bin/uautomizer-verify-uCwYo4JHxu/mathsat [2023-11-19 07:44:24,739 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36f0d8bc-1180-44d3-9769-a6486706b7d6/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 07:44:24,780 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36f0d8bc-1180-44d3-9769-a6486706b7d6/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 07:44:24,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:44:24,877 INFO L262 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-19 07:44:24,882 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:44:25,005 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 07:44:25,042 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:44:25,043 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 07:44:25,056 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:44:25,057 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 07:44:25,074 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:44:25,075 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 07:44:25,085 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:44:25,086 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 07:44:25,095 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:44:25,097 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 07:44:25,120 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:44:25,121 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 07:44:25,137 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:44:25,139 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 07:44:25,146 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:44:25,147 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 07:44:25,154 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:44:25,155 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 07:44:25,162 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:44:25,163 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 07:44:25,187 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:44:25,188 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 07:44:25,211 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:44:25,212 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 07:44:25,221 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:44:25,222 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 07:44:25,252 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:44:25,253 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 07:44:25,270 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:44:25,271 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 07:44:25,284 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:44:25,285 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 07:44:25,299 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:44:25,300 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 07:44:25,309 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:44:25,309 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 07:44:25,317 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:44:25,318 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 07:44:25,329 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:44:25,330 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 07:44:25,346 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:44:25,346 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 07:44:25,356 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:44:25,357 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 11 treesize of output 1 [2023-11-19 07:44:25,361 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:44:25,362 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 07:44:25,368 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 07:44:25,369 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:44:25,369 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-19 07:44:25,370 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [463511594] [2023-11-19 07:44:25,370 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [463511594] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:44:25,370 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:44:25,371 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-19 07:44:25,372 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [675550774] [2023-11-19 07:44:25,373 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:44:25,381 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:44:25,386 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-19 07:44:25,408 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:44:25,409 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:44:25,547 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 152 out of 378 [2023-11-19 07:44:25,551 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 07:44:25,551 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:44:25,552 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 152 of 378 [2023-11-19 07:44:25,553 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:44:26,173 INFO L124 PetriNetUnfolderBase]: 1817/2564 cut-off events. [2023-11-19 07:44:26,173 INFO L125 PetriNetUnfolderBase]: For 84/84 co-relation queries the response was YES. [2023-11-19 07:44:26,179 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 07:44:26,202 INFO L140 encePairwiseOnDemand]: 366/378 looper letters, 39 selfloop transitions, 4 changer transitions 0/43 dead transitions. [2023-11-19 07:44:26,202 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 43 transitions, 190 flow [2023-11-19 07:44:26,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:44:26,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 07:44:26,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 507 transitions. [2023-11-19 07:44:26,219 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4470899470899471 [2023-11-19 07:44:26,220 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 507 transitions. [2023-11-19 07:44:26,221 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 507 transitions. [2023-11-19 07:44:26,223 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:44:26,226 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 507 transitions. [2023-11-19 07:44:26,230 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 07:44:26,237 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 07:44:26,238 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 07:44:26,240 INFO L175 Difference]: Start difference. First operand has 57 places, 51 transitions, 120 flow. Second operand 3 states and 507 transitions. [2023-11-19 07:44:26,241 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 43 transitions, 190 flow [2023-11-19 07:44:26,248 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 07:44:26,250 INFO L231 Difference]: Finished difference. Result has 45 places, 43 transitions, 100 flow [2023-11-19 07:44:26,252 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 07:44:26,256 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, -12 predicate places. [2023-11-19 07:44:26,256 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 43 transitions, 100 flow [2023-11-19 07:44:26,257 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 07:44:26,257 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:44:26,257 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-11-19 07:44:26,268 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36f0d8bc-1180-44d3-9769-a6486706b7d6/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)] Forceful destruction successful, exit code 0 [2023-11-19 07:44:26,469 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36f0d8bc-1180-44d3-9769-a6486706b7d6/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 07:44:26,469 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 07:44:26,469 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:44:26,470 INFO L85 PathProgramCache]: Analyzing trace with hash 25247, now seen corresponding path program 1 times [2023-11-19 07:44:26,470 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-19 07:44:26,470 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2116365520] [2023-11-19 07:44:26,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:44:26,470 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 07:44:26,471 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36f0d8bc-1180-44d3-9769-a6486706b7d6/bin/uautomizer-verify-uCwYo4JHxu/mathsat [2023-11-19 07:44:26,472 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36f0d8bc-1180-44d3-9769-a6486706b7d6/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 07:44:26,476 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36f0d8bc-1180-44d3-9769-a6486706b7d6/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 07:44:26,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:44:26,563 INFO L262 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-19 07:44:26,564 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:44:26,613 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 07:44:26,613 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:44:26,613 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-19 07:44:26,614 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2116365520] [2023-11-19 07:44:26,614 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2116365520] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:44:26,614 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:44:26,614 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-19 07:44:26,615 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1515490281] [2023-11-19 07:44:26,615 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:44:26,616 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:44:26,617 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-19 07:44:26,617 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:44:26,618 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:44:26,718 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 153 out of 378 [2023-11-19 07:44:26,719 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 07:44:26,720 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:44:26,720 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 153 of 378 [2023-11-19 07:44:26,720 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:44:27,238 INFO L124 PetriNetUnfolderBase]: 1817/2566 cut-off events. [2023-11-19 07:44:27,239 INFO L125 PetriNetUnfolderBase]: For 15/15 co-relation queries the response was YES. [2023-11-19 07:44:27,241 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 07:44:27,259 INFO L140 encePairwiseOnDemand]: 373/378 looper letters, 43 selfloop transitions, 2 changer transitions 0/45 dead transitions. [2023-11-19 07:44:27,260 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 45 transitions, 194 flow [2023-11-19 07:44:27,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:44:27,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 07:44:27,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 507 transitions. [2023-11-19 07:44:27,265 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4470899470899471 [2023-11-19 07:44:27,265 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 507 transitions. [2023-11-19 07:44:27,265 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 507 transitions. [2023-11-19 07:44:27,266 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:44:27,266 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 507 transitions. [2023-11-19 07:44:27,268 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 07:44:27,273 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 07:44:27,274 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 07:44:27,274 INFO L175 Difference]: Start difference. First operand has 45 places, 43 transitions, 100 flow. Second operand 3 states and 507 transitions. [2023-11-19 07:44:27,274 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 45 transitions, 194 flow [2023-11-19 07:44:27,275 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 07:44:27,277 INFO L231 Difference]: Finished difference. Result has 46 places, 44 transitions, 108 flow [2023-11-19 07:44:27,278 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 07:44:27,279 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, -11 predicate places. [2023-11-19 07:44:27,279 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 44 transitions, 108 flow [2023-11-19 07:44:27,280 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 07:44:27,280 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:44:27,280 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-11-19 07:44:27,284 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36f0d8bc-1180-44d3-9769-a6486706b7d6/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)] Forceful destruction successful, exit code 0 [2023-11-19 07:44:27,482 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36f0d8bc-1180-44d3-9769-a6486706b7d6/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 07:44:27,482 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 07:44:27,483 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:44:27,483 INFO L85 PathProgramCache]: Analyzing trace with hash 25163, now seen corresponding path program 1 times [2023-11-19 07:44:27,484 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-19 07:44:27,484 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [343686353] [2023-11-19 07:44:27,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:44:27,484 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 07:44:27,484 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36f0d8bc-1180-44d3-9769-a6486706b7d6/bin/uautomizer-verify-uCwYo4JHxu/mathsat [2023-11-19 07:44:27,485 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36f0d8bc-1180-44d3-9769-a6486706b7d6/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 07:44:27,493 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36f0d8bc-1180-44d3-9769-a6486706b7d6/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 07:44:27,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:44:27,560 INFO L262 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-19 07:44:27,561 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:44:27,587 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 07:44:27,615 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:44:27,616 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 07:44:27,628 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:44:27,629 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 07:44:27,653 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:44:27,654 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 07:44:27,673 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:44:27,674 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 07:44:27,697 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:44:27,698 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 07:44:27,711 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:44:27,712 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 07:44:27,723 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:44:27,724 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 07:44:27,747 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:44:27,748 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 07:44:27,761 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:44:27,764 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 07:44:27,777 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:44:27,782 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 07:44:27,790 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:44:27,791 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 07:44:27,805 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:44:27,806 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 07:44:27,817 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:44:27,817 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 07:44:27,845 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:44:27,846 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 07:44:27,859 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:44:27,860 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 07:44:27,873 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:44:27,874 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 07:44:27,887 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:44:27,888 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-19 07:44:27,920 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:44:27,929 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 07:44:27,953 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:44:27,954 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 07:44:27,979 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:44:27,985 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 07:44:27,997 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:44:27,999 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 07:44:28,028 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:44:28,033 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 07:44:28,071 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:44:28,074 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 07:44:28,094 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 07:44:28,094 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:44:28,094 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-19 07:44:28,094 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [343686353] [2023-11-19 07:44:28,094 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [343686353] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:44:28,094 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:44:28,094 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-19 07:44:28,095 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1888574121] [2023-11-19 07:44:28,095 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:44:28,095 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:44:28,095 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-19 07:44:28,096 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:44:28,096 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:44:28,258 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 151 out of 378 [2023-11-19 07:44:28,259 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 07:44:28,259 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:44:28,259 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 151 of 378 [2023-11-19 07:44:28,260 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:44:28,776 INFO L124 PetriNetUnfolderBase]: 1817/2565 cut-off events. [2023-11-19 07:44:28,776 INFO L125 PetriNetUnfolderBase]: For 15/15 co-relation queries the response was YES. [2023-11-19 07:44:28,779 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 07:44:28,796 INFO L140 encePairwiseOnDemand]: 375/378 looper letters, 42 selfloop transitions, 2 changer transitions 0/44 dead transitions. [2023-11-19 07:44:28,797 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 44 transitions, 196 flow [2023-11-19 07:44:28,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:44:28,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 07:44:28,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 498 transitions. [2023-11-19 07:44:28,800 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43915343915343913 [2023-11-19 07:44:28,800 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 498 transitions. [2023-11-19 07:44:28,800 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 498 transitions. [2023-11-19 07:44:28,801 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:44:28,801 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 498 transitions. [2023-11-19 07:44:28,802 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 07:44:28,805 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 07:44:28,806 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 07:44:28,807 INFO L175 Difference]: Start difference. First operand has 46 places, 44 transitions, 108 flow. Second operand 3 states and 498 transitions. [2023-11-19 07:44:28,807 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 44 transitions, 196 flow [2023-11-19 07:44:28,808 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 07:44:28,810 INFO L231 Difference]: Finished difference. Result has 48 places, 44 transitions, 112 flow [2023-11-19 07:44:28,811 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 07:44:28,812 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, -9 predicate places. [2023-11-19 07:44:28,812 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 44 transitions, 112 flow [2023-11-19 07:44:28,813 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 07:44:28,813 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:44:28,813 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-11-19 07:44:28,821 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36f0d8bc-1180-44d3-9769-a6486706b7d6/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)] Forceful destruction successful, exit code 0 [2023-11-19 07:44:29,015 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36f0d8bc-1180-44d3-9769-a6486706b7d6/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 07:44:29,015 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 07:44:29,016 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:44:29,016 INFO L85 PathProgramCache]: Analyzing trace with hash 782524, now seen corresponding path program 1 times [2023-11-19 07:44:29,016 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-19 07:44:29,016 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [590901953] [2023-11-19 07:44:29,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:44:29,016 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 07:44:29,017 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36f0d8bc-1180-44d3-9769-a6486706b7d6/bin/uautomizer-verify-uCwYo4JHxu/mathsat [2023-11-19 07:44:29,018 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36f0d8bc-1180-44d3-9769-a6486706b7d6/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 07:44:29,019 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36f0d8bc-1180-44d3-9769-a6486706b7d6/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 07:44:29,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:44:29,118 INFO L262 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-19 07:44:29,119 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:44:29,155 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 07:44:29,171 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:44:29,172 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 07:44:29,218 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:44:29,219 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 07:44:29,234 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:44:29,235 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 07:44:29,266 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:44:29,267 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 07:44:29,297 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:44:29,298 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 07:44:29,322 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:44:29,323 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 07:44:29,333 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:44:29,334 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-19 07:44:29,343 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:44:29,343 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 07:44:29,354 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:44:29,354 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 07:44:29,372 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:44:29,372 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 07:44:29,383 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:44:29,383 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 07:44:29,395 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:44:29,396 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 07:44:29,406 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:44:29,407 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 07:44:29,417 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:44:29,418 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 07:44:29,426 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:44:29,428 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 07:44:29,459 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:44:29,460 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 07:44:29,477 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:44:29,478 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 13 treesize of output 1 [2023-11-19 07:44:29,489 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:44:29,490 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 07:44:29,501 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:44:29,501 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 07:44:29,523 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:44:29,523 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 07:44:29,535 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:44:29,536 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 07:44:29,545 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:44:29,546 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 07:44:29,555 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:44:29,556 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 07:44:29,637 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 07:44:29,637 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:44:29,893 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 07:44:29,894 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-19 07:44:29,894 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [590901953] [2023-11-19 07:44:29,894 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [590901953] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 07:44:29,894 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-19 07:44:29,895 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2] total 4 [2023-11-19 07:44:29,895 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1657017690] [2023-11-19 07:44:29,895 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-19 07:44:29,895 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-19 07:44:29,896 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-19 07:44:29,896 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-19 07:44:29,896 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-11-19 07:44:30,922 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 146 out of 378 [2023-11-19 07:44:30,924 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 07:44:30,924 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:44:30,925 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 146 of 378 [2023-11-19 07:44:30,925 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:44:32,027 INFO L124 PetriNetUnfolderBase]: 1826/2577 cut-off events. [2023-11-19 07:44:32,027 INFO L125 PetriNetUnfolderBase]: For 15/15 co-relation queries the response was YES. [2023-11-19 07:44:32,030 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 07:44:32,044 INFO L140 encePairwiseOnDemand]: 372/378 looper letters, 42 selfloop transitions, 14 changer transitions 0/56 dead transitions. [2023-11-19 07:44:32,044 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 56 transitions, 272 flow [2023-11-19 07:44:32,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-19 07:44:32,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-19 07:44:32,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 935 transitions. [2023-11-19 07:44:32,051 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4122574955908289 [2023-11-19 07:44:32,051 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 935 transitions. [2023-11-19 07:44:32,051 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 935 transitions. [2023-11-19 07:44:32,052 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:44:32,052 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 935 transitions. [2023-11-19 07:44:32,055 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 07:44:32,061 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 07:44:32,063 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 07:44:32,063 INFO L175 Difference]: Start difference. First operand has 48 places, 44 transitions, 112 flow. Second operand 6 states and 935 transitions. [2023-11-19 07:44:32,064 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 56 transitions, 272 flow [2023-11-19 07:44:32,065 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 07:44:32,066 INFO L231 Difference]: Finished difference. Result has 54 places, 56 transitions, 213 flow [2023-11-19 07:44:32,066 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 07:44:32,067 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, -3 predicate places. [2023-11-19 07:44:32,068 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 56 transitions, 213 flow [2023-11-19 07:44:32,068 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 07:44:32,069 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:44:32,069 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1] [2023-11-19 07:44:32,087 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36f0d8bc-1180-44d3-9769-a6486706b7d6/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 07:44:32,273 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36f0d8bc-1180-44d3-9769-a6486706b7d6/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 07:44:32,274 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 07:44:32,274 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:44:32,274 INFO L85 PathProgramCache]: Analyzing trace with hash 24260799, now seen corresponding path program 1 times [2023-11-19 07:44:32,274 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-19 07:44:32,274 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1266459368] [2023-11-19 07:44:32,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:44:32,274 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 07:44:32,275 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36f0d8bc-1180-44d3-9769-a6486706b7d6/bin/uautomizer-verify-uCwYo4JHxu/mathsat [2023-11-19 07:44:32,275 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36f0d8bc-1180-44d3-9769-a6486706b7d6/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 07:44:32,278 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36f0d8bc-1180-44d3-9769-a6486706b7d6/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 07:44:32,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:44:32,385 INFO L262 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 16 conjunts are in the unsatisfiable core [2023-11-19 07:44:32,387 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:44:32,423 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:44:32,425 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:44:32,429 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 07:44:32,446 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:44:32,451 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 07:44:32,485 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:44:32,487 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:44:32,541 INFO L349 Elim1Store]: treesize reduction 19, result has 13.6 percent of original size [2023-11-19 07:44:32,541 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 07:44:32,571 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:44:32,573 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:44:32,574 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:44:32,580 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 07:44:32,603 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:44:32,605 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:44:32,622 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 07:44:32,890 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 07:44:32,890 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:44:33,219 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 07:44:33,219 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-19 07:44:33,219 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1266459368] [2023-11-19 07:44:33,219 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1266459368] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 07:44:33,219 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-19 07:44:33,220 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 6 [2023-11-19 07:44:33,220 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1354191457] [2023-11-19 07:44:33,220 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-19 07:44:33,220 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-19 07:44:33,221 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-19 07:44:33,222 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-19 07:44:33,223 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2023-11-19 07:44:34,365 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 139 out of 378 [2023-11-19 07:44:34,367 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 07:44:34,367 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:44:34,367 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 139 of 378 [2023-11-19 07:44:34,367 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:44:36,167 INFO L124 PetriNetUnfolderBase]: 1827/2582 cut-off events. [2023-11-19 07:44:36,167 INFO L125 PetriNetUnfolderBase]: For 31/31 co-relation queries the response was YES. [2023-11-19 07:44:36,170 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 07:44:36,188 INFO L140 encePairwiseOnDemand]: 372/378 looper letters, 44 selfloop transitions, 17 changer transitions 0/61 dead transitions. [2023-11-19 07:44:36,189 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 61 transitions, 370 flow [2023-11-19 07:44:36,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-19 07:44:36,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-11-19 07:44:36,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1178 transitions. [2023-11-19 07:44:36,196 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38955026455026454 [2023-11-19 07:44:36,196 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1178 transitions. [2023-11-19 07:44:36,196 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1178 transitions. [2023-11-19 07:44:36,198 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:44:36,198 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1178 transitions. [2023-11-19 07:44:36,202 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 07:44:36,209 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 07:44:36,211 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 07:44:36,211 INFO L175 Difference]: Start difference. First operand has 54 places, 56 transitions, 213 flow. Second operand 8 states and 1178 transitions. [2023-11-19 07:44:36,211 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 61 transitions, 370 flow [2023-11-19 07:44:36,213 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 07:44:36,215 INFO L231 Difference]: Finished difference. Result has 62 places, 60 transitions, 247 flow [2023-11-19 07:44:36,215 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 07:44:36,216 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 5 predicate places. [2023-11-19 07:44:36,216 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 60 transitions, 247 flow [2023-11-19 07:44:36,217 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 07:44:36,217 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:44:36,217 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1] [2023-11-19 07:44:36,228 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36f0d8bc-1180-44d3-9769-a6486706b7d6/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)] Forceful destruction successful, exit code 0 [2023-11-19 07:44:36,420 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36f0d8bc-1180-44d3-9769-a6486706b7d6/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 07:44:36,420 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 07:44:36,421 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:44:36,421 INFO L85 PathProgramCache]: Analyzing trace with hash 24260800, now seen corresponding path program 1 times [2023-11-19 07:44:36,421 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-19 07:44:36,421 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2003791478] [2023-11-19 07:44:36,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:44:36,422 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 07:44:36,422 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36f0d8bc-1180-44d3-9769-a6486706b7d6/bin/uautomizer-verify-uCwYo4JHxu/mathsat [2023-11-19 07:44:36,423 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36f0d8bc-1180-44d3-9769-a6486706b7d6/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 07:44:36,424 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36f0d8bc-1180-44d3-9769-a6486706b7d6/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 07:44:36,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:44:36,525 INFO L262 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-19 07:44:36,532 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:44:36,595 INFO L349 Elim1Store]: treesize reduction 103, result has 12.7 percent of original size [2023-11-19 07:44:36,596 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 07:44:36,647 INFO L349 Elim1Store]: treesize reduction 60, result has 20.0 percent of original size [2023-11-19 07:44:36,648 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 07:44:36,822 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 07:44:36,823 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:44:36,823 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-19 07:44:36,823 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2003791478] [2023-11-19 07:44:36,823 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2003791478] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:44:36,823 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:44:36,824 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-19 07:44:36,824 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1833373080] [2023-11-19 07:44:36,824 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:44:36,824 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:44:36,825 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-19 07:44:36,825 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:44:36,825 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:44:37,035 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 152 out of 378 [2023-11-19 07:44:37,036 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 07:44:37,036 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:44:37,036 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 152 of 378 [2023-11-19 07:44:37,036 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:44:37,484 INFO L124 PetriNetUnfolderBase]: 1448/2076 cut-off events. [2023-11-19 07:44:37,484 INFO L125 PetriNetUnfolderBase]: For 42/42 co-relation queries the response was YES. [2023-11-19 07:44:37,487 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 07:44:37,499 INFO L140 encePairwiseOnDemand]: 375/378 looper letters, 52 selfloop transitions, 1 changer transitions 0/53 dead transitions. [2023-11-19 07:44:37,499 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 53 transitions, 312 flow [2023-11-19 07:44:37,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:44:37,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 07:44:37,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 499 transitions. [2023-11-19 07:44:37,503 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4400352733686067 [2023-11-19 07:44:37,503 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 499 transitions. [2023-11-19 07:44:37,503 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 499 transitions. [2023-11-19 07:44:37,504 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:44:37,504 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 499 transitions. [2023-11-19 07:44:37,506 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 07:44:37,508 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 07:44:37,509 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 07:44:37,509 INFO L175 Difference]: Start difference. First operand has 62 places, 60 transitions, 247 flow. Second operand 3 states and 499 transitions. [2023-11-19 07:44:37,509 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 53 transitions, 312 flow [2023-11-19 07:44:37,511 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 07:44:37,513 INFO L231 Difference]: Finished difference. Result has 58 places, 53 transitions, 177 flow [2023-11-19 07:44:37,513 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 07:44:37,514 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 1 predicate places. [2023-11-19 07:44:37,514 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 53 transitions, 177 flow [2023-11-19 07:44:37,515 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 07:44:37,515 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:44:37,515 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-11-19 07:44:37,523 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36f0d8bc-1180-44d3-9769-a6486706b7d6/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 07:44:37,717 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36f0d8bc-1180-44d3-9769-a6486706b7d6/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 07:44:37,718 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 07:44:37,718 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:44:37,718 INFO L85 PathProgramCache]: Analyzing trace with hash 752103659, now seen corresponding path program 1 times [2023-11-19 07:44:37,719 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-19 07:44:37,719 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [567616529] [2023-11-19 07:44:37,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:44:37,719 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 07:44:37,719 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36f0d8bc-1180-44d3-9769-a6486706b7d6/bin/uautomizer-verify-uCwYo4JHxu/mathsat [2023-11-19 07:44:37,720 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36f0d8bc-1180-44d3-9769-a6486706b7d6/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 07:44:37,728 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36f0d8bc-1180-44d3-9769-a6486706b7d6/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 07:44:37,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:44:37,820 INFO L262 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-19 07:44:37,821 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:44:37,836 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:44:37,867 INFO L349 Elim1Store]: treesize reduction 37, result has 15.9 percent of original size [2023-11-19 07:44:37,868 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 07:44:37,879 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:44:37,902 INFO L349 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2023-11-19 07:44:37,902 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 07:44:37,938 INFO L349 Elim1Store]: treesize reduction 37, result has 15.9 percent of original size [2023-11-19 07:44:37,938 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 07:44:37,960 INFO L349 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2023-11-19 07:44:37,960 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 07:44:37,987 INFO L349 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2023-11-19 07:44:37,987 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 07:44:38,000 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:44:38,021 INFO L349 Elim1Store]: treesize reduction 37, result has 15.9 percent of original size [2023-11-19 07:44:38,021 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 07:44:38,044 INFO L349 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2023-11-19 07:44:38,044 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 07:44:38,076 INFO L349 Elim1Store]: treesize reduction 37, result has 15.9 percent of original size [2023-11-19 07:44:38,077 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 07:44:38,261 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 07:44:38,262 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:44:38,262 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-19 07:44:38,262 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [567616529] [2023-11-19 07:44:38,262 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [567616529] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:44:38,262 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:44:38,262 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-19 07:44:38,262 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [459916114] [2023-11-19 07:44:38,262 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:44:38,263 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:44:38,263 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-19 07:44:38,263 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:44:38,263 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:44:38,437 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 149 out of 378 [2023-11-19 07:44:38,438 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 07:44:38,438 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:44:38,438 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 149 of 378 [2023-11-19 07:44:38,439 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:44:38,872 INFO L124 PetriNetUnfolderBase]: 1393/1991 cut-off events. [2023-11-19 07:44:38,872 INFO L125 PetriNetUnfolderBase]: For 37/37 co-relation queries the response was YES. [2023-11-19 07:44:38,875 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 07:44:38,888 INFO L140 encePairwiseOnDemand]: 375/378 looper letters, 50 selfloop transitions, 1 changer transitions 0/51 dead transitions. [2023-11-19 07:44:38,888 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 51 transitions, 275 flow [2023-11-19 07:44:38,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:44:38,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 07:44:38,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 488 transitions. [2023-11-19 07:44:38,891 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43033509700176364 [2023-11-19 07:44:38,891 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 488 transitions. [2023-11-19 07:44:38,892 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 488 transitions. [2023-11-19 07:44:38,892 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:44:38,892 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 488 transitions. [2023-11-19 07:44:38,894 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 07:44:38,897 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 07:44:38,897 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 07:44:38,898 INFO L175 Difference]: Start difference. First operand has 58 places, 53 transitions, 177 flow. Second operand 3 states and 488 transitions. [2023-11-19 07:44:38,898 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 51 transitions, 275 flow [2023-11-19 07:44:38,899 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 07:44:38,901 INFO L231 Difference]: Finished difference. Result has 57 places, 51 transitions, 174 flow [2023-11-19 07:44:38,901 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 07:44:38,902 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 0 predicate places. [2023-11-19 07:44:38,902 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 51 transitions, 174 flow [2023-11-19 07:44:38,902 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 07:44:38,902 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:44:38,903 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-11-19 07:44:38,916 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36f0d8bc-1180-44d3-9769-a6486706b7d6/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 07:44:39,112 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36f0d8bc-1180-44d3-9769-a6486706b7d6/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 07:44:39,112 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 07:44:39,112 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:44:39,112 INFO L85 PathProgramCache]: Analyzing trace with hash 752103660, now seen corresponding path program 1 times [2023-11-19 07:44:39,113 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-19 07:44:39,113 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2027642793] [2023-11-19 07:44:39,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:44:39,113 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 07:44:39,113 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36f0d8bc-1180-44d3-9769-a6486706b7d6/bin/uautomizer-verify-uCwYo4JHxu/mathsat [2023-11-19 07:44:39,114 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36f0d8bc-1180-44d3-9769-a6486706b7d6/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 07:44:39,117 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36f0d8bc-1180-44d3-9769-a6486706b7d6/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 07:44:39,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:44:39,238 INFO L262 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-19 07:44:39,240 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:44:39,260 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:44:39,291 INFO L349 Elim1Store]: treesize reduction 13, result has 40.9 percent of original size [2023-11-19 07:44:39,291 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 07:44:39,320 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:44:39,327 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:44:39,328 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 07:44:39,333 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:44:39,354 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:44:39,362 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:44:39,363 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 07:44:39,368 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:44:39,372 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 07:44:39,389 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:44:39,402 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:44:39,423 INFO L349 Elim1Store]: treesize reduction 9, result has 35.7 percent of original size [2023-11-19 07:44:39,424 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 07:44:39,434 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 07:44:39,456 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:44:39,464 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:44:39,464 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 07:44:39,469 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:44:39,487 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:44:39,515 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:44:39,534 INFO L349 Elim1Store]: treesize reduction 9, result has 35.7 percent of original size [2023-11-19 07:44:39,534 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 07:44:39,541 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:44:39,547 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 07:44:39,581 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:44:39,595 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:44:39,596 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 07:44:39,606 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:44:39,608 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:44:39,616 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 07:44:39,642 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:44:39,667 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:44:39,691 INFO L349 Elim1Store]: treesize reduction 9, result has 35.7 percent of original size [2023-11-19 07:44:39,692 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 07:44:39,701 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:44:39,710 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 07:44:40,175 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 07:44:40,175 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:44:40,452 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 07:44:40,453 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-19 07:44:40,453 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2027642793] [2023-11-19 07:44:40,453 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2027642793] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 07:44:40,453 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-19 07:44:40,453 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 6 [2023-11-19 07:44:40,453 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [751023683] [2023-11-19 07:44:40,453 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-19 07:44:40,454 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-19 07:44:40,454 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-19 07:44:40,454 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-19 07:44:40,454 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56