./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/weaver/popl20-simple-queue.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_142851d4-eb66-4ad4-9584-482841cac750/bin/uautomizer-verify-BQ2R08f2Ya/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_142851d4-eb66-4ad4-9584-482841cac750/bin/uautomizer-verify-BQ2R08f2Ya/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_142851d4-eb66-4ad4-9584-482841cac750/bin/uautomizer-verify-BQ2R08f2Ya/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_142851d4-eb66-4ad4-9584-482841cac750/bin/uautomizer-verify-BQ2R08f2Ya/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/weaver/popl20-simple-queue.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_142851d4-eb66-4ad4-9584-482841cac750/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_142851d4-eb66-4ad4-9584-482841cac750/bin/uautomizer-verify-BQ2R08f2Ya --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 608e0c2870f111f9f6921442a1f1a544ee956a8de04c7629c0edf3e54cde4da3 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-29 05:08:51,912 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-29 05:08:51,986 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_142851d4-eb66-4ad4-9584-482841cac750/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2023-11-29 05:08:51,991 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-29 05:08:51,992 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-29 05:08:52,018 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-29 05:08:52,018 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-29 05:08:52,019 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-29 05:08:52,020 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-29 05:08:52,020 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-29 05:08:52,021 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-29 05:08:52,021 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-29 05:08:52,022 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-29 05:08:52,023 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-29 05:08:52,023 INFO L153 SettingsManager]: * Use SBE=true [2023-11-29 05:08:52,024 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-29 05:08:52,024 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-29 05:08:52,025 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-29 05:08:52,025 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-29 05:08:52,026 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-29 05:08:52,026 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-29 05:08:52,027 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-29 05:08:52,027 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-29 05:08:52,028 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-29 05:08:52,028 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-29 05:08:52,029 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-29 05:08:52,029 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-29 05:08:52,029 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-29 05:08:52,030 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-29 05:08:52,030 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-29 05:08:52,031 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-29 05:08:52,031 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-29 05:08:52,031 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 05:08:52,032 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-29 05:08:52,032 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-29 05:08:52,032 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-29 05:08:52,032 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-29 05:08:52,033 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-29 05:08:52,033 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-29 05:08:52,033 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-29 05:08:52,033 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-29 05:08:52,033 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_142851d4-eb66-4ad4-9584-482841cac750/bin/uautomizer-verify-BQ2R08f2Ya/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_142851d4-eb66-4ad4-9584-482841cac750/bin/uautomizer-verify-BQ2R08f2Ya Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 608e0c2870f111f9f6921442a1f1a544ee956a8de04c7629c0edf3e54cde4da3 [2023-11-29 05:08:52,230 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-29 05:08:52,252 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-29 05:08:52,254 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-29 05:08:52,255 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-29 05:08:52,256 INFO L274 PluginConnector]: CDTParser initialized [2023-11-29 05:08:52,257 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_142851d4-eb66-4ad4-9584-482841cac750/bin/uautomizer-verify-BQ2R08f2Ya/../../sv-benchmarks/c/weaver/popl20-simple-queue.wvr.c [2023-11-29 05:08:55,035 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-29 05:08:55,215 INFO L384 CDTParser]: Found 1 translation units. [2023-11-29 05:08:55,216 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_142851d4-eb66-4ad4-9584-482841cac750/sv-benchmarks/c/weaver/popl20-simple-queue.wvr.c [2023-11-29 05:08:55,222 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_142851d4-eb66-4ad4-9584-482841cac750/bin/uautomizer-verify-BQ2R08f2Ya/data/705ef9881/619af2043c59445d85f6af32ca1b6c37/FLAGdcb77e95e [2023-11-29 05:08:55,233 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_142851d4-eb66-4ad4-9584-482841cac750/bin/uautomizer-verify-BQ2R08f2Ya/data/705ef9881/619af2043c59445d85f6af32ca1b6c37 [2023-11-29 05:08:55,236 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-29 05:08:55,237 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-29 05:08:55,239 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-29 05:08:55,239 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-29 05:08:55,243 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-29 05:08:55,244 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 05:08:55" (1/1) ... [2023-11-29 05:08:55,245 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@43e615ff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:08:55, skipping insertion in model container [2023-11-29 05:08:55,245 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 05:08:55" (1/1) ... [2023-11-29 05:08:55,266 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-29 05:08:55,410 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 05:08:55,421 ERROR L324 MainTranslator]: Unsupported Syntax: Found a cast between two array/pointer types of different sizes while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) [2023-11-29 05:08:55,422 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@26dd6259 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:08:55, skipping insertion in model container [2023-11-29 05:08:55,422 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-29 05:08:55,422 INFO L186 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2023-11-29 05:08:55,424 INFO L158 Benchmark]: Toolchain (without parser) took 186.11ms. Allocated memory is still 153.1MB. Free memory was 123.2MB in the beginning and 113.3MB in the end (delta: 9.9MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-11-29 05:08:55,425 INFO L158 Benchmark]: CDTParser took 0.19ms. Allocated memory is still 113.2MB. Free memory is still 73.6MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-29 05:08:55,425 INFO L158 Benchmark]: CACSL2BoogieTranslator took 183.65ms. Allocated memory is still 153.1MB. Free memory was 123.0MB in the beginning and 113.3MB in the end (delta: 9.6MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-11-29 05:08:55,427 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19ms. Allocated memory is still 113.2MB. Free memory is still 73.6MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 183.65ms. Allocated memory is still 153.1MB. Free memory was 123.0MB in the beginning and 113.3MB in the end (delta: 9.6MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 95]: Unsupported Syntax Found a cast between two array/pointer types of different sizes while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_142851d4-eb66-4ad4-9584-482841cac750/bin/uautomizer-verify-BQ2R08f2Ya/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_142851d4-eb66-4ad4-9584-482841cac750/bin/uautomizer-verify-BQ2R08f2Ya/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_142851d4-eb66-4ad4-9584-482841cac750/bin/uautomizer-verify-BQ2R08f2Ya/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_142851d4-eb66-4ad4-9584-482841cac750/bin/uautomizer-verify-BQ2R08f2Ya/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/weaver/popl20-simple-queue.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_142851d4-eb66-4ad4-9584-482841cac750/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_142851d4-eb66-4ad4-9584-482841cac750/bin/uautomizer-verify-BQ2R08f2Ya --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 608e0c2870f111f9f6921442a1f1a544ee956a8de04c7629c0edf3e54cde4da3 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-29 05:08:57,130 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-29 05:08:57,203 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_142851d4-eb66-4ad4-9584-482841cac750/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2023-11-29 05:08:57,208 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-29 05:08:57,209 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-29 05:08:57,233 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-29 05:08:57,234 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-29 05:08:57,234 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-29 05:08:57,235 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-29 05:08:57,235 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-29 05:08:57,236 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-29 05:08:57,236 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-29 05:08:57,237 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-29 05:08:57,237 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-29 05:08:57,238 INFO L153 SettingsManager]: * Use SBE=true [2023-11-29 05:08:57,238 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-29 05:08:57,239 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-29 05:08:57,239 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-29 05:08:57,240 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-29 05:08:57,240 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-29 05:08:57,241 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-29 05:08:57,241 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-29 05:08:57,242 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-29 05:08:57,242 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-29 05:08:57,242 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-29 05:08:57,243 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-11-29 05:08:57,243 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-11-29 05:08:57,244 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-29 05:08:57,244 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-29 05:08:57,244 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-29 05:08:57,245 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-29 05:08:57,245 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-29 05:08:57,246 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-29 05:08:57,246 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-29 05:08:57,246 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 05:08:57,246 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-29 05:08:57,247 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-29 05:08:57,247 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-11-29 05:08:57,247 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-11-29 05:08:57,247 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-29 05:08:57,247 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-29 05:08:57,248 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-29 05:08:57,248 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-29 05:08:57,248 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-11-29 05:08:57,248 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_142851d4-eb66-4ad4-9584-482841cac750/bin/uautomizer-verify-BQ2R08f2Ya/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_142851d4-eb66-4ad4-9584-482841cac750/bin/uautomizer-verify-BQ2R08f2Ya Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 608e0c2870f111f9f6921442a1f1a544ee956a8de04c7629c0edf3e54cde4da3 [2023-11-29 05:08:57,529 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-29 05:08:57,549 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-29 05:08:57,552 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-29 05:08:57,553 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-29 05:08:57,554 INFO L274 PluginConnector]: CDTParser initialized [2023-11-29 05:08:57,555 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_142851d4-eb66-4ad4-9584-482841cac750/bin/uautomizer-verify-BQ2R08f2Ya/../../sv-benchmarks/c/weaver/popl20-simple-queue.wvr.c [2023-11-29 05:09:00,370 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-29 05:09:00,569 INFO L384 CDTParser]: Found 1 translation units. [2023-11-29 05:09:00,570 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_142851d4-eb66-4ad4-9584-482841cac750/sv-benchmarks/c/weaver/popl20-simple-queue.wvr.c [2023-11-29 05:09:00,578 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_142851d4-eb66-4ad4-9584-482841cac750/bin/uautomizer-verify-BQ2R08f2Ya/data/502b09221/a0140101be0f4f98b7d4b28b1c68c39e/FLAG3461f9bb4 [2023-11-29 05:09:00,594 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_142851d4-eb66-4ad4-9584-482841cac750/bin/uautomizer-verify-BQ2R08f2Ya/data/502b09221/a0140101be0f4f98b7d4b28b1c68c39e [2023-11-29 05:09:00,597 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-29 05:09:00,599 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-29 05:09:00,600 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-29 05:09:00,600 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-29 05:09:00,606 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-29 05:09:00,606 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 05:09:00" (1/1) ... [2023-11-29 05:09:00,607 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@223f85be and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:09:00, skipping insertion in model container [2023-11-29 05:09:00,608 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 05:09:00" (1/1) ... [2023-11-29 05:09:00,633 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-29 05:09:00,824 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 05:09:00,849 INFO L199 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2023-11-29 05:09:00,853 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-29 05:09:00,890 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 05:09:00,900 INFO L202 MainTranslator]: Completed pre-run [2023-11-29 05:09:00,924 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 05:09:00,935 WARN L675 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-29 05:09:00,936 WARN L675 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-29 05:09:00,943 INFO L206 MainTranslator]: Completed translation [2023-11-29 05:09:00,944 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:09:00 WrapperNode [2023-11-29 05:09:00,944 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-29 05:09:00,945 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-29 05:09:00,945 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-29 05:09:00,946 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-29 05:09:00,953 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:09:00" (1/1) ... [2023-11-29 05:09:00,964 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:09:00" (1/1) ... [2023-11-29 05:09:00,989 INFO L138 Inliner]: procedures = 26, calls = 34, calls flagged for inlining = 10, calls inlined = 10, statements flattened = 134 [2023-11-29 05:09:00,989 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-29 05:09:00,990 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-29 05:09:00,990 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-29 05:09:00,990 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-29 05:09:01,002 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:09:00" (1/1) ... [2023-11-29 05:09:01,002 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:09:00" (1/1) ... [2023-11-29 05:09:01,007 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:09:00" (1/1) ... [2023-11-29 05:09:01,024 INFO L175 MemorySlicer]: Split 9 memory accesses to 4 slices as follows [2, 3, 2, 2]. 33 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0, 0]. The 3 writes are split as follows [0, 1, 1, 1]. [2023-11-29 05:09:01,024 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:09:00" (1/1) ... [2023-11-29 05:09:01,025 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:09:00" (1/1) ... [2023-11-29 05:09:01,036 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:09:00" (1/1) ... [2023-11-29 05:09:01,040 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:09:00" (1/1) ... [2023-11-29 05:09:01,043 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:09:00" (1/1) ... [2023-11-29 05:09:01,045 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:09:00" (1/1) ... [2023-11-29 05:09:01,050 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-29 05:09:01,051 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-29 05:09:01,051 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-29 05:09:01,051 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-29 05:09:01,052 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:09:00" (1/1) ... [2023-11-29 05:09:01,058 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 05:09:01,070 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_142851d4-eb66-4ad4-9584-482841cac750/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:09:01,082 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_142851d4-eb66-4ad4-9584-482841cac750/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-29 05:09:01,105 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_142851d4-eb66-4ad4-9584-482841cac750/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-29 05:09:01,125 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-29 05:09:01,125 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2023-11-29 05:09:01,125 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#1 [2023-11-29 05:09:01,125 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#2 [2023-11-29 05:09:01,125 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#3 [2023-11-29 05:09:01,126 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-29 05:09:01,126 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#0 [2023-11-29 05:09:01,126 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#1 [2023-11-29 05:09:01,126 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#2 [2023-11-29 05:09:01,126 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#3 [2023-11-29 05:09:01,126 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-11-29 05:09:01,127 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-11-29 05:09:01,127 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-11-29 05:09:01,127 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-11-29 05:09:01,127 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-29 05:09:01,127 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-29 05:09:01,127 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-29 05:09:01,128 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-29 05:09:01,128 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-29 05:09:01,128 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-29 05:09:01,128 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#0 [2023-11-29 05:09:01,128 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#1 [2023-11-29 05:09:01,128 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#2 [2023-11-29 05:09:01,129 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#3 [2023-11-29 05:09:01,130 WARN L213 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-29 05:09:01,256 INFO L241 CfgBuilder]: Building ICFG [2023-11-29 05:09:01,258 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-29 05:09:01,634 INFO L282 CfgBuilder]: Performing block encoding [2023-11-29 05:09:01,875 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-29 05:09:01,875 INFO L309 CfgBuilder]: Removed 3 assume(true) statements. [2023-11-29 05:09:01,876 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 05:09:01 BoogieIcfgContainer [2023-11-29 05:09:01,876 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-29 05:09:01,878 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-29 05:09:01,878 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-29 05:09:01,882 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-29 05:09:01,882 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 05:09:00" (1/3) ... [2023-11-29 05:09:01,883 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1a96c85f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 05:09:01, skipping insertion in model container [2023-11-29 05:09:01,883 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:09:00" (2/3) ... [2023-11-29 05:09:01,883 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1a96c85f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 05:09:01, skipping insertion in model container [2023-11-29 05:09:01,883 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 05:09:01" (3/3) ... [2023-11-29 05:09:01,884 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-simple-queue.wvr.c [2023-11-29 05:09:01,903 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-29 05:09:01,904 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 16 error locations. [2023-11-29 05:09:01,904 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-29 05:09:01,957 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-11-29 05:09:01,992 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 52 places, 50 transitions, 114 flow [2023-11-29 05:09:02,022 INFO L124 PetriNetUnfolderBase]: 5/48 cut-off events. [2023-11-29 05:09:02,022 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-29 05:09:02,026 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57 conditions, 48 events. 5/48 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 87 event pairs, 0 based on Foata normal form. 0/27 useless extension candidates. Maximal degree in co-relation 29. Up to 2 conditions per place. [2023-11-29 05:09:02,026 INFO L82 GeneralOperation]: Start removeDead. Operand has 52 places, 50 transitions, 114 flow [2023-11-29 05:09:02,030 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 49 places, 47 transitions, 106 flow [2023-11-29 05:09:02,040 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-29 05:09:02,047 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;@539ce9aa, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-29 05:09:02,048 INFO L358 AbstractCegarLoop]: Starting to check reachability of 22 error locations. [2023-11-29 05:09:02,051 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-29 05:09:02,052 INFO L124 PetriNetUnfolderBase]: 1/4 cut-off events. [2023-11-29 05:09:02,052 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-29 05:09:02,052 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 05:09:02,053 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-11-29 05:09:02,053 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-11-29 05:09:02,058 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:09:02,058 INFO L85 PathProgramCache]: Analyzing trace with hash 427620, now seen corresponding path program 1 times [2023-11-29 05:09:02,069 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 05:09:02,069 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [251412042] [2023-11-29 05:09:02,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:09:02,070 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 05:09:02,070 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_142851d4-eb66-4ad4-9584-482841cac750/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 05:09:02,101 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_142851d4-eb66-4ad4-9584-482841cac750/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-29 05:09:02,103 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_142851d4-eb66-4ad4-9584-482841cac750/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2023-11-29 05:09:02,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:09:02,182 INFO L262 TraceCheckSpWp]: Trace formula consists of 42 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-29 05:09:02,187 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:09:02,258 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 7 [2023-11-29 05:09:02,274 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 05:09:02,275 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-29 05:09:02,284 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 05:09:02,285 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 1 [2023-11-29 05:09:02,292 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 05:09:02,293 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-29 05:09:02,311 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 05:09:02,311 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 1 [2023-11-29 05:09:02,320 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 05:09:02,321 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-29 05:09:02,330 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 05:09:02,330 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 05:09:02,331 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 05:09:02,331 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [251412042] [2023-11-29 05:09:02,332 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [251412042] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:09:02,332 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:09:02,332 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-29 05:09:02,334 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [276893459] [2023-11-29 05:09:02,334 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:09:02,340 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 05:09:02,344 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 05:09:02,364 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 05:09:02,365 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 05:09:02,417 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 50 [2023-11-29 05:09:02,419 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 47 transitions, 106 flow. Second operand has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:09:02,419 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 05:09:02,419 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 50 [2023-11-29 05:09:02,420 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 05:09:02,617 INFO L124 PetriNetUnfolderBase]: 187/420 cut-off events. [2023-11-29 05:09:02,617 INFO L125 PetriNetUnfolderBase]: For 32/33 co-relation queries the response was YES. [2023-11-29 05:09:02,620 INFO L83 FinitePrefix]: Finished finitePrefix Result has 755 conditions, 420 events. 187/420 cut-off events. For 32/33 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 2294 event pairs, 128 based on Foata normal form. 54/288 useless extension candidates. Maximal degree in co-relation 679. Up to 305 conditions per place. [2023-11-29 05:09:02,624 INFO L140 encePairwiseOnDemand]: 44/50 looper letters, 21 selfloop transitions, 2 changer transitions 0/42 dead transitions. [2023-11-29 05:09:02,624 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 42 transitions, 142 flow [2023-11-29 05:09:02,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 05:09:02,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-29 05:09:02,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 93 transitions. [2023-11-29 05:09:02,634 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.62 [2023-11-29 05:09:02,635 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 93 transitions. [2023-11-29 05:09:02,635 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 93 transitions. [2023-11-29 05:09:02,636 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 05:09:02,638 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 93 transitions. [2023-11-29 05:09:02,640 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:09:02,643 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 50.0) internal successors, (200), 4 states have internal predecessors, (200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:09:02,644 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 50.0) internal successors, (200), 4 states have internal predecessors, (200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:09:02,646 INFO L175 Difference]: Start difference. First operand has 49 places, 47 transitions, 106 flow. Second operand 3 states and 93 transitions. [2023-11-29 05:09:02,646 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 42 transitions, 142 flow [2023-11-29 05:09:02,650 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 42 transitions, 134 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-11-29 05:09:02,652 INFO L231 Difference]: Finished difference. Result has 44 places, 42 transitions, 92 flow [2023-11-29 05:09:02,654 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=88, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=92, PETRI_PLACES=44, PETRI_TRANSITIONS=42} [2023-11-29 05:09:02,658 INFO L281 CegarLoopForPetriNet]: 49 programPoint places, -5 predicate places. [2023-11-29 05:09:02,658 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 42 transitions, 92 flow [2023-11-29 05:09:02,658 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:09:02,658 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 05:09:02,659 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-11-29 05:09:02,662 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_142851d4-eb66-4ad4-9584-482841cac750/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2023-11-29 05:09:02,859 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_142851d4-eb66-4ad4-9584-482841cac750/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 05:09:02,860 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-11-29 05:09:02,860 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:09:02,860 INFO L85 PathProgramCache]: Analyzing trace with hash 427621, now seen corresponding path program 1 times [2023-11-29 05:09:02,861 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 05:09:02,861 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [917609450] [2023-11-29 05:09:02,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:09:02,861 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 05:09:02,862 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_142851d4-eb66-4ad4-9584-482841cac750/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 05:09:02,863 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_142851d4-eb66-4ad4-9584-482841cac750/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-29 05:09:02,864 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_142851d4-eb66-4ad4-9584-482841cac750/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2023-11-29 05:09:02,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:09:02,915 INFO L262 TraceCheckSpWp]: Trace formula consists of 42 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-29 05:09:02,916 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:09:02,955 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 7 [2023-11-29 05:09:02,968 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 05:09:02,969 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-29 05:09:02,981 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 05:09:02,982 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-29 05:09:02,993 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 05:09:02,994 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-29 05:09:03,019 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 05:09:03,020 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1 [2023-11-29 05:09:03,032 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 05:09:03,032 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-29 05:09:03,110 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 05:09:03,110 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 05:09:03,110 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 05:09:03,111 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [917609450] [2023-11-29 05:09:03,111 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [917609450] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:09:03,111 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:09:03,111 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 05:09:03,112 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [799211270] [2023-11-29 05:09:03,112 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:09:03,113 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 05:09:03,113 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 05:09:03,114 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 05:09:03,114 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 05:09:03,262 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 50 [2023-11-29 05:09:03,262 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 42 transitions, 92 flow. Second operand has 4 states, 4 states have (on average 22.75) internal successors, (91), 4 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:09:03,262 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 05:09:03,262 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 50 [2023-11-29 05:09:03,263 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 05:09:03,520 INFO L124 PetriNetUnfolderBase]: 188/423 cut-off events. [2023-11-29 05:09:03,520 INFO L125 PetriNetUnfolderBase]: For 8/9 co-relation queries the response was YES. [2023-11-29 05:09:03,522 INFO L83 FinitePrefix]: Finished finitePrefix Result has 748 conditions, 423 events. 188/423 cut-off events. For 8/9 co-relation queries the response was YES. Maximal size of possible extension queue 65. Compared 2296 event pairs, 128 based on Foata normal form. 0/237 useless extension candidates. Maximal degree in co-relation 726. Up to 310 conditions per place. [2023-11-29 05:09:03,525 INFO L140 encePairwiseOnDemand]: 45/50 looper letters, 23 selfloop transitions, 4 changer transitions 0/45 dead transitions. [2023-11-29 05:09:03,526 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 45 transitions, 154 flow [2023-11-29 05:09:03,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 05:09:03,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-29 05:09:03,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 116 transitions. [2023-11-29 05:09:03,528 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.58 [2023-11-29 05:09:03,528 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 116 transitions. [2023-11-29 05:09:03,528 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 116 transitions. [2023-11-29 05:09:03,529 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 05:09:03,529 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 116 transitions. [2023-11-29 05:09:03,530 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 29.0) internal successors, (116), 4 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:09:03,539 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 50.0) internal successors, (250), 5 states have internal predecessors, (250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:09:03,539 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 50.0) internal successors, (250), 5 states have internal predecessors, (250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:09:03,540 INFO L175 Difference]: Start difference. First operand has 44 places, 42 transitions, 92 flow. Second operand 4 states and 116 transitions. [2023-11-29 05:09:03,540 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 45 transitions, 154 flow [2023-11-29 05:09:03,541 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 45 transitions, 148 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-29 05:09:03,542 INFO L231 Difference]: Finished difference. Result has 47 places, 45 transitions, 115 flow [2023-11-29 05:09:03,543 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=88, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=115, PETRI_PLACES=47, PETRI_TRANSITIONS=45} [2023-11-29 05:09:03,543 INFO L281 CegarLoopForPetriNet]: 49 programPoint places, -2 predicate places. [2023-11-29 05:09:03,544 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 45 transitions, 115 flow [2023-11-29 05:09:03,544 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.75) internal successors, (91), 4 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:09:03,544 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 05:09:03,544 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-11-29 05:09:03,546 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_142851d4-eb66-4ad4-9584-482841cac750/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Ended with exit code 0 [2023-11-29 05:09:03,746 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_142851d4-eb66-4ad4-9584-482841cac750/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 05:09:03,746 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-11-29 05:09:03,747 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:09:03,747 INFO L85 PathProgramCache]: Analyzing trace with hash 427655, now seen corresponding path program 1 times [2023-11-29 05:09:03,747 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 05:09:03,747 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1779663668] [2023-11-29 05:09:03,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:09:03,748 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 05:09:03,748 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_142851d4-eb66-4ad4-9584-482841cac750/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 05:09:03,749 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_142851d4-eb66-4ad4-9584-482841cac750/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-29 05:09:03,750 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_142851d4-eb66-4ad4-9584-482841cac750/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2023-11-29 05:09:03,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:09:03,802 INFO L262 TraceCheckSpWp]: Trace formula consists of 48 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-29 05:09:03,804 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:09:03,842 INFO L349 Elim1Store]: treesize reduction 37, result has 15.9 percent of original size [2023-11-29 05:09:03,843 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 22 [2023-11-29 05:09:03,865 INFO L349 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2023-11-29 05:09:03,866 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 22 [2023-11-29 05:09:03,929 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 05:09:03,929 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 05:09:03,930 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 05:09:03,930 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1779663668] [2023-11-29 05:09:03,930 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1779663668] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:09:03,930 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:09:03,930 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-29 05:09:03,930 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1546119676] [2023-11-29 05:09:03,931 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:09:03,931 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 05:09:03,931 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 05:09:03,932 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 05:09:03,932 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 05:09:04,001 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 50 [2023-11-29 05:09:04,002 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 45 transitions, 115 flow. Second operand has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:09:04,002 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 05:09:04,002 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 50 [2023-11-29 05:09:04,002 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 05:09:04,165 INFO L124 PetriNetUnfolderBase]: 300/563 cut-off events. [2023-11-29 05:09:04,165 INFO L125 PetriNetUnfolderBase]: For 5/5 co-relation queries the response was YES. [2023-11-29 05:09:04,173 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1059 conditions, 563 events. 300/563 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 65. Compared 2752 event pairs, 212 based on Foata normal form. 0/357 useless extension candidates. Maximal degree in co-relation 1035. Up to 472 conditions per place. [2023-11-29 05:09:04,177 INFO L140 encePairwiseOnDemand]: 47/50 looper letters, 27 selfloop transitions, 1 changer transitions 0/43 dead transitions. [2023-11-29 05:09:04,177 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 43 transitions, 167 flow [2023-11-29 05:09:04,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 05:09:04,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-29 05:09:04,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 84 transitions. [2023-11-29 05:09:04,179 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.56 [2023-11-29 05:09:04,179 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 84 transitions. [2023-11-29 05:09:04,179 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 84 transitions. [2023-11-29 05:09:04,180 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 05:09:04,180 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 84 transitions. [2023-11-29 05:09:04,180 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:09:04,181 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 50.0) internal successors, (200), 4 states have internal predecessors, (200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:09:04,182 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 50.0) internal successors, (200), 4 states have internal predecessors, (200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:09:04,182 INFO L175 Difference]: Start difference. First operand has 47 places, 45 transitions, 115 flow. Second operand 3 states and 84 transitions. [2023-11-29 05:09:04,182 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 43 transitions, 167 flow [2023-11-29 05:09:04,183 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 43 transitions, 164 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-29 05:09:04,184 INFO L231 Difference]: Finished difference. Result has 46 places, 43 transitions, 110 flow [2023-11-29 05:09:04,184 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=108, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=110, PETRI_PLACES=46, PETRI_TRANSITIONS=43} [2023-11-29 05:09:04,185 INFO L281 CegarLoopForPetriNet]: 49 programPoint places, -3 predicate places. [2023-11-29 05:09:04,185 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 43 transitions, 110 flow [2023-11-29 05:09:04,185 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:09:04,185 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 05:09:04,185 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-11-29 05:09:04,187 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_142851d4-eb66-4ad4-9584-482841cac750/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Ended with exit code 0 [2023-11-29 05:09:04,386 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_142851d4-eb66-4ad4-9584-482841cac750/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 05:09:04,386 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-11-29 05:09:04,387 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:09:04,387 INFO L85 PathProgramCache]: Analyzing trace with hash 427656, now seen corresponding path program 1 times [2023-11-29 05:09:04,387 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 05:09:04,387 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [587898983] [2023-11-29 05:09:04,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:09:04,387 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 05:09:04,388 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_142851d4-eb66-4ad4-9584-482841cac750/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 05:09:04,389 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_142851d4-eb66-4ad4-9584-482841cac750/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-29 05:09:04,390 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_142851d4-eb66-4ad4-9584-482841cac750/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2023-11-29 05:09:04,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:09:04,454 INFO L262 TraceCheckSpWp]: Trace formula consists of 48 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-29 05:09:04,456 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:09:04,486 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 05:09:04,492 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 05:09:04,493 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 5 [2023-11-29 05:09:04,505 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2023-11-29 05:09:04,526 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 05:09:04,527 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 5 [2023-11-29 05:09:04,536 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 05:09:04,540 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 [2023-11-29 05:09:04,585 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 05:09:04,585 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 05:09:04,586 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 05:09:04,586 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [587898983] [2023-11-29 05:09:04,586 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [587898983] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:09:04,586 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:09:04,586 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-29 05:09:04,587 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [801387696] [2023-11-29 05:09:04,587 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:09:04,587 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 05:09:04,587 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 05:09:04,588 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 05:09:04,588 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 05:09:04,668 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 50 [2023-11-29 05:09:04,668 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 43 transitions, 110 flow. Second operand has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:09:04,668 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 05:09:04,668 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 50 [2023-11-29 05:09:04,668 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 05:09:04,796 INFO L124 PetriNetUnfolderBase]: 188/379 cut-off events. [2023-11-29 05:09:04,797 INFO L125 PetriNetUnfolderBase]: For 8/9 co-relation queries the response was YES. [2023-11-29 05:09:04,797 INFO L83 FinitePrefix]: Finished finitePrefix Result has 712 conditions, 379 events. 188/379 cut-off events. For 8/9 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 1799 event pairs, 128 based on Foata normal form. 50/287 useless extension candidates. Maximal degree in co-relation 703. Up to 310 conditions per place. [2023-11-29 05:09:04,800 INFO L140 encePairwiseOnDemand]: 47/50 looper letters, 25 selfloop transitions, 1 changer transitions 0/41 dead transitions. [2023-11-29 05:09:04,800 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 41 transitions, 158 flow [2023-11-29 05:09:04,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 05:09:04,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-29 05:09:04,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 88 transitions. [2023-11-29 05:09:04,802 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5866666666666667 [2023-11-29 05:09:04,802 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 88 transitions. [2023-11-29 05:09:04,802 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 88 transitions. [2023-11-29 05:09:04,802 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 05:09:04,802 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 88 transitions. [2023-11-29 05:09:04,803 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:09:04,804 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 50.0) internal successors, (200), 4 states have internal predecessors, (200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:09:04,804 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 50.0) internal successors, (200), 4 states have internal predecessors, (200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:09:04,804 INFO L175 Difference]: Start difference. First operand has 46 places, 43 transitions, 110 flow. Second operand 3 states and 88 transitions. [2023-11-29 05:09:04,804 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 41 transitions, 158 flow [2023-11-29 05:09:04,805 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 41 transitions, 157 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-29 05:09:04,806 INFO L231 Difference]: Finished difference. Result has 45 places, 41 transitions, 107 flow [2023-11-29 05:09:04,806 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=105, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=107, PETRI_PLACES=45, PETRI_TRANSITIONS=41} [2023-11-29 05:09:04,807 INFO L281 CegarLoopForPetriNet]: 49 programPoint places, -4 predicate places. [2023-11-29 05:09:04,808 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 41 transitions, 107 flow [2023-11-29 05:09:04,808 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:09:04,808 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 05:09:04,808 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1] [2023-11-29 05:09:04,810 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_142851d4-eb66-4ad4-9584-482841cac750/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Ended with exit code 0 [2023-11-29 05:09:05,008 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_142851d4-eb66-4ad4-9584-482841cac750/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 05:09:05,009 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-11-29 05:09:05,009 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:09:05,009 INFO L85 PathProgramCache]: Analyzing trace with hash 410956250, now seen corresponding path program 1 times [2023-11-29 05:09:05,009 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 05:09:05,010 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [905597066] [2023-11-29 05:09:05,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:09:05,010 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 05:09:05,010 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_142851d4-eb66-4ad4-9584-482841cac750/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 05:09:05,011 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_142851d4-eb66-4ad4-9584-482841cac750/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-29 05:09:05,012 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_142851d4-eb66-4ad4-9584-482841cac750/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2023-11-29 05:09:05,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:09:05,067 INFO L262 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-29 05:09:05,069 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:09:05,088 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 7 [2023-11-29 05:09:05,104 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 05:09:05,105 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-29 05:09:05,116 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 05:09:05,117 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-29 05:09:05,123 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 05:09:05,124 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-29 05:09:05,132 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 05:09:05,133 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-29 05:09:05,143 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 05:09:05,143 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-29 05:09:05,316 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 05:09:05,317 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 05:09:05,732 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 05:09:05,732 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 05:09:05,732 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [905597066] [2023-11-29 05:09:05,733 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [905597066] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 05:09:05,733 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 05:09:05,733 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 8 [2023-11-29 05:09:05,733 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1801805310] [2023-11-29 05:09:05,733 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 05:09:05,734 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-29 05:09:05,734 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 05:09:05,734 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-29 05:09:05,734 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2023-11-29 05:09:06,324 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 50 [2023-11-29 05:09:06,324 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 41 transitions, 107 flow. Second operand has 10 states, 10 states have (on average 23.0) internal successors, (230), 10 states have internal predecessors, (230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:09:06,324 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 05:09:06,324 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 50 [2023-11-29 05:09:06,324 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 05:09:06,935 INFO L124 PetriNetUnfolderBase]: 191/388 cut-off events. [2023-11-29 05:09:06,935 INFO L125 PetriNetUnfolderBase]: For 8/9 co-relation queries the response was YES. [2023-11-29 05:09:06,936 INFO L83 FinitePrefix]: Finished finitePrefix Result has 741 conditions, 388 events. 191/388 cut-off events. For 8/9 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 1852 event pairs, 128 based on Foata normal form. 0/242 useless extension candidates. Maximal degree in co-relation 731. Up to 313 conditions per place. [2023-11-29 05:09:06,938 INFO L140 encePairwiseOnDemand]: 45/50 looper letters, 23 selfloop transitions, 13 changer transitions 0/50 dead transitions. [2023-11-29 05:09:06,938 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 50 transitions, 215 flow [2023-11-29 05:09:06,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-29 05:09:06,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-11-29 05:09:06,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 259 transitions. [2023-11-29 05:09:06,941 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.518 [2023-11-29 05:09:06,941 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 259 transitions. [2023-11-29 05:09:06,941 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 259 transitions. [2023-11-29 05:09:06,942 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 05:09:06,942 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 259 transitions. [2023-11-29 05:09:06,943 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 25.9) internal successors, (259), 10 states have internal predecessors, (259), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:09:06,945 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 50.0) internal successors, (550), 11 states have internal predecessors, (550), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:09:06,946 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 50.0) internal successors, (550), 11 states have internal predecessors, (550), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:09:06,946 INFO L175 Difference]: Start difference. First operand has 45 places, 41 transitions, 107 flow. Second operand 10 states and 259 transitions. [2023-11-29 05:09:06,946 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 50 transitions, 215 flow [2023-11-29 05:09:06,947 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 50 transitions, 214 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-29 05:09:06,956 INFO L231 Difference]: Finished difference. Result has 56 places, 50 transitions, 186 flow [2023-11-29 05:09:06,956 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=106, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=186, PETRI_PLACES=56, PETRI_TRANSITIONS=50} [2023-11-29 05:09:06,957 INFO L281 CegarLoopForPetriNet]: 49 programPoint places, 7 predicate places. [2023-11-29 05:09:06,957 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 50 transitions, 186 flow [2023-11-29 05:09:06,958 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 23.0) internal successors, (230), 10 states have internal predecessors, (230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:09:06,958 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 05:09:06,958 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-11-29 05:09:06,960 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_142851d4-eb66-4ad4-9584-482841cac750/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Ended with exit code 0 [2023-11-29 05:09:07,160 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_142851d4-eb66-4ad4-9584-482841cac750/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 05:09:07,160 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-11-29 05:09:07,161 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:09:07,161 INFO L85 PathProgramCache]: Analyzing trace with hash -144241779, now seen corresponding path program 1 times [2023-11-29 05:09:07,161 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 05:09:07,162 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [282310472] [2023-11-29 05:09:07,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:09:07,162 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 05:09:07,162 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_142851d4-eb66-4ad4-9584-482841cac750/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 05:09:07,163 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_142851d4-eb66-4ad4-9584-482841cac750/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-29 05:09:07,164 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_142851d4-eb66-4ad4-9584-482841cac750/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2023-11-29 05:09:07,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:09:07,217 INFO L262 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-29 05:09:07,219 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:09:07,241 INFO L349 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2023-11-29 05:09:07,241 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 15 [2023-11-29 05:09:07,261 INFO L349 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2023-11-29 05:09:07,262 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 9 treesize of output 15 [2023-11-29 05:09:07,280 INFO L349 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2023-11-29 05:09:07,280 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 9 treesize of output 15 [2023-11-29 05:09:07,364 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 05:09:07,364 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 05:09:07,364 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 05:09:07,365 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [282310472] [2023-11-29 05:09:07,365 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [282310472] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:09:07,365 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:09:07,365 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-29 05:09:07,365 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1262175244] [2023-11-29 05:09:07,365 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:09:07,365 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 05:09:07,366 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 05:09:07,366 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 05:09:07,366 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 05:09:07,427 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 50 [2023-11-29 05:09:07,428 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 50 transitions, 186 flow. Second operand has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:09:07,428 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 05:09:07,428 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 50 [2023-11-29 05:09:07,428 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 05:09:07,561 INFO L124 PetriNetUnfolderBase]: 207/408 cut-off events. [2023-11-29 05:09:07,561 INFO L125 PetriNetUnfolderBase]: For 16/16 co-relation queries the response was YES. [2023-11-29 05:09:07,562 INFO L83 FinitePrefix]: Finished finitePrefix Result has 815 conditions, 408 events. 207/408 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 1933 event pairs, 140 based on Foata normal form. 0/266 useless extension candidates. Maximal degree in co-relation 801. Up to 349 conditions per place. [2023-11-29 05:09:07,565 INFO L140 encePairwiseOnDemand]: 47/50 looper letters, 36 selfloop transitions, 1 changer transitions 0/48 dead transitions. [2023-11-29 05:09:07,565 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 48 transitions, 256 flow [2023-11-29 05:09:07,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 05:09:07,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-29 05:09:07,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 84 transitions. [2023-11-29 05:09:07,566 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.56 [2023-11-29 05:09:07,566 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 84 transitions. [2023-11-29 05:09:07,566 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 84 transitions. [2023-11-29 05:09:07,567 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 05:09:07,567 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 84 transitions. [2023-11-29 05:09:07,567 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:09:07,568 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 50.0) internal successors, (200), 4 states have internal predecessors, (200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:09:07,568 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 50.0) internal successors, (200), 4 states have internal predecessors, (200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:09:07,568 INFO L175 Difference]: Start difference. First operand has 56 places, 50 transitions, 186 flow. Second operand 3 states and 84 transitions. [2023-11-29 05:09:07,568 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 48 transitions, 256 flow [2023-11-29 05:09:07,570 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 48 transitions, 226 flow, removed 11 selfloop flow, removed 3 redundant places. [2023-11-29 05:09:07,572 INFO L231 Difference]: Finished difference. Result has 53 places, 48 transitions, 154 flow [2023-11-29 05:09:07,572 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=152, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=154, PETRI_PLACES=53, PETRI_TRANSITIONS=48} [2023-11-29 05:09:07,573 INFO L281 CegarLoopForPetriNet]: 49 programPoint places, 4 predicate places. [2023-11-29 05:09:07,573 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 48 transitions, 154 flow [2023-11-29 05:09:07,573 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:09:07,573 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 05:09:07,573 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-11-29 05:09:07,576 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_142851d4-eb66-4ad4-9584-482841cac750/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2023-11-29 05:09:07,776 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_142851d4-eb66-4ad4-9584-482841cac750/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 05:09:07,776 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-11-29 05:09:07,776 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:09:07,776 INFO L85 PathProgramCache]: Analyzing trace with hash -144241778, now seen corresponding path program 1 times [2023-11-29 05:09:07,777 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 05:09:07,777 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1128603443] [2023-11-29 05:09:07,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:09:07,777 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 05:09:07,777 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_142851d4-eb66-4ad4-9584-482841cac750/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 05:09:07,778 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_142851d4-eb66-4ad4-9584-482841cac750/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-29 05:09:07,779 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_142851d4-eb66-4ad4-9584-482841cac750/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2023-11-29 05:09:07,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:09:07,842 INFO L262 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-29 05:09:07,843 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:09:07,860 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 05:09:07,861 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 5 [2023-11-29 05:09:07,865 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 10 treesize of output 8 [2023-11-29 05:09:07,873 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-29 05:09:07,885 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 05:09:07,892 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 05:09:07,894 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 1 [2023-11-29 05:09:07,929 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 05:09:07,929 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 05:09:07,930 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 05:09:07,930 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1128603443] [2023-11-29 05:09:07,930 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1128603443] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:09:07,930 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:09:07,930 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-29 05:09:07,930 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1431686818] [2023-11-29 05:09:07,930 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:09:07,931 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 05:09:07,931 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 05:09:07,931 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 05:09:07,931 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 05:09:07,973 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 50 [2023-11-29 05:09:07,974 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 48 transitions, 154 flow. Second operand has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:09:07,974 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 05:09:07,974 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 50 [2023-11-29 05:09:07,974 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 05:09:08,079 INFO L124 PetriNetUnfolderBase]: 191/376 cut-off events. [2023-11-29 05:09:08,079 INFO L125 PetriNetUnfolderBase]: For 14/15 co-relation queries the response was YES. [2023-11-29 05:09:08,079 INFO L83 FinitePrefix]: Finished finitePrefix Result has 739 conditions, 376 events. 191/376 cut-off events. For 14/15 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 1773 event pairs, 128 based on Foata normal form. 10/256 useless extension candidates. Maximal degree in co-relation 725. Up to 319 conditions per place. [2023-11-29 05:09:08,082 INFO L140 encePairwiseOnDemand]: 47/50 looper letters, 34 selfloop transitions, 1 changer transitions 0/46 dead transitions. [2023-11-29 05:09:08,082 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 46 transitions, 220 flow [2023-11-29 05:09:08,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 05:09:08,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-29 05:09:08,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 88 transitions. [2023-11-29 05:09:08,083 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5866666666666667 [2023-11-29 05:09:08,083 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 88 transitions. [2023-11-29 05:09:08,083 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 88 transitions. [2023-11-29 05:09:08,083 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 05:09:08,083 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 88 transitions. [2023-11-29 05:09:08,084 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:09:08,084 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 50.0) internal successors, (200), 4 states have internal predecessors, (200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:09:08,085 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 50.0) internal successors, (200), 4 states have internal predecessors, (200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:09:08,085 INFO L175 Difference]: Start difference. First operand has 53 places, 48 transitions, 154 flow. Second operand 3 states and 88 transitions. [2023-11-29 05:09:08,085 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 46 transitions, 220 flow [2023-11-29 05:09:08,086 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 46 transitions, 219 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-29 05:09:08,087 INFO L231 Difference]: Finished difference. Result has 52 places, 46 transitions, 151 flow [2023-11-29 05:09:08,088 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=149, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=151, PETRI_PLACES=52, PETRI_TRANSITIONS=46} [2023-11-29 05:09:08,088 INFO L281 CegarLoopForPetriNet]: 49 programPoint places, 3 predicate places. [2023-11-29 05:09:08,088 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 46 transitions, 151 flow [2023-11-29 05:09:08,089 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:09:08,089 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 05:09:08,089 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:09:08,091 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_142851d4-eb66-4ad4-9584-482841cac750/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2023-11-29 05:09:08,289 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_142851d4-eb66-4ad4-9584-482841cac750/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 05:09:08,289 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-11-29 05:09:08,290 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:09:08,290 INFO L85 PathProgramCache]: Analyzing trace with hash -1176777627, now seen corresponding path program 1 times [2023-11-29 05:09:08,290 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 05:09:08,290 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1199738523] [2023-11-29 05:09:08,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:09:08,290 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 05:09:08,291 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_142851d4-eb66-4ad4-9584-482841cac750/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 05:09:08,292 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_142851d4-eb66-4ad4-9584-482841cac750/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-29 05:09:08,293 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_142851d4-eb66-4ad4-9584-482841cac750/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2023-11-29 05:09:08,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:09:08,361 INFO L262 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-29 05:09:08,362 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:09:08,369 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-11-29 05:09:08,375 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 05:09:08,375 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 1 [2023-11-29 05:09:08,387 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 05:09:08,387 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 1 [2023-11-29 05:09:08,393 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 05:09:08,393 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-29 05:09:08,397 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 05:09:08,398 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 1 [2023-11-29 05:09:08,404 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 05:09:08,404 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-29 05:09:08,423 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 05:09:08,423 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 05:09:08,423 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 05:09:08,423 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1199738523] [2023-11-29 05:09:08,424 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1199738523] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:09:08,424 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:09:08,424 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 05:09:08,424 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [489846552] [2023-11-29 05:09:08,424 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:09:08,424 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 05:09:08,425 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 05:09:08,425 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 05:09:08,425 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 05:09:08,508 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 50 [2023-11-29 05:09:08,508 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 46 transitions, 151 flow. Second operand has 4 states, 4 states have (on average 23.25) internal successors, (93), 4 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:09:08,508 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 05:09:08,508 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 50 [2023-11-29 05:09:08,508 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 05:09:08,627 INFO L124 PetriNetUnfolderBase]: 146/297 cut-off events. [2023-11-29 05:09:08,627 INFO L125 PetriNetUnfolderBase]: For 13/14 co-relation queries the response was YES. [2023-11-29 05:09:08,628 INFO L83 FinitePrefix]: Finished finitePrefix Result has 586 conditions, 297 events. 146/297 cut-off events. For 13/14 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 1311 event pairs, 91 based on Foata normal form. 0/211 useless extension candidates. Maximal degree in co-relation 571. Up to 234 conditions per place. [2023-11-29 05:09:08,629 INFO L140 encePairwiseOnDemand]: 46/50 looper letters, 27 selfloop transitions, 6 changer transitions 0/44 dead transitions. [2023-11-29 05:09:08,629 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 44 transitions, 213 flow [2023-11-29 05:09:08,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 05:09:08,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-29 05:09:08,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 111 transitions. [2023-11-29 05:09:08,631 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.555 [2023-11-29 05:09:08,631 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 111 transitions. [2023-11-29 05:09:08,631 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 111 transitions. [2023-11-29 05:09:08,631 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 05:09:08,631 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 111 transitions. [2023-11-29 05:09:08,632 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 27.75) internal successors, (111), 4 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:09:08,633 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 50.0) internal successors, (250), 5 states have internal predecessors, (250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:09:08,633 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 50.0) internal successors, (250), 5 states have internal predecessors, (250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:09:08,633 INFO L175 Difference]: Start difference. First operand has 52 places, 46 transitions, 151 flow. Second operand 4 states and 111 transitions. [2023-11-29 05:09:08,633 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 44 transitions, 213 flow [2023-11-29 05:09:08,634 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 44 transitions, 212 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-29 05:09:08,635 INFO L231 Difference]: Finished difference. Result has 52 places, 44 transitions, 158 flow [2023-11-29 05:09:08,636 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=146, PETRI_DIFFERENCE_MINUEND_PLACES=49, 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=4, PETRI_FLOW=158, PETRI_PLACES=52, PETRI_TRANSITIONS=44} [2023-11-29 05:09:08,636 INFO L281 CegarLoopForPetriNet]: 49 programPoint places, 3 predicate places. [2023-11-29 05:09:08,637 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 44 transitions, 158 flow [2023-11-29 05:09:08,637 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.25) internal successors, (93), 4 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:09:08,637 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 05:09:08,637 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:09:08,639 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_142851d4-eb66-4ad4-9584-482841cac750/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2023-11-29 05:09:08,839 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_142851d4-eb66-4ad4-9584-482841cac750/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 05:09:08,840 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-11-29 05:09:08,840 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:09:08,840 INFO L85 PathProgramCache]: Analyzing trace with hash -1176777626, now seen corresponding path program 1 times [2023-11-29 05:09:08,840 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 05:09:08,840 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [210858974] [2023-11-29 05:09:08,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:09:08,840 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 05:09:08,840 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_142851d4-eb66-4ad4-9584-482841cac750/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 05:09:08,841 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_142851d4-eb66-4ad4-9584-482841cac750/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-29 05:09:08,843 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_142851d4-eb66-4ad4-9584-482841cac750/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2023-11-29 05:09:08,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:09:08,919 INFO L262 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-29 05:09:08,920 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:09:08,981 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 05:09:08,981 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 05:09:08,981 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 05:09:08,981 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [210858974] [2023-11-29 05:09:08,981 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [210858974] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:09:08,982 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:09:08,982 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 05:09:08,982 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1357938406] [2023-11-29 05:09:08,982 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:09:08,983 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 05:09:08,983 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 05:09:08,983 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 05:09:08,983 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 05:09:09,000 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 50 [2023-11-29 05:09:09,000 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 44 transitions, 158 flow. Second operand has 4 states, 4 states have (on average 24.25) internal successors, (97), 4 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:09:09,000 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 05:09:09,000 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 50 [2023-11-29 05:09:09,000 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 05:09:09,199 INFO L124 PetriNetUnfolderBase]: 187/416 cut-off events. [2023-11-29 05:09:09,199 INFO L125 PetriNetUnfolderBase]: For 18/20 co-relation queries the response was YES. [2023-11-29 05:09:09,200 INFO L83 FinitePrefix]: Finished finitePrefix Result has 804 conditions, 416 events. 187/416 cut-off events. For 18/20 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 2160 event pairs, 133 based on Foata normal form. 19/328 useless extension candidates. Maximal degree in co-relation 788. Up to 243 conditions per place. [2023-11-29 05:09:09,202 INFO L140 encePairwiseOnDemand]: 43/50 looper letters, 41 selfloop transitions, 3 changer transitions 2/57 dead transitions. [2023-11-29 05:09:09,202 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 57 transitions, 280 flow [2023-11-29 05:09:09,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 05:09:09,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-29 05:09:09,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 133 transitions. [2023-11-29 05:09:09,204 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.665 [2023-11-29 05:09:09,204 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 133 transitions. [2023-11-29 05:09:09,204 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 133 transitions. [2023-11-29 05:09:09,204 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 05:09:09,204 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 133 transitions. [2023-11-29 05:09:09,205 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 33.25) internal successors, (133), 4 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:09:09,206 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 50.0) internal successors, (250), 5 states have internal predecessors, (250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:09:09,206 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 50.0) internal successors, (250), 5 states have internal predecessors, (250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:09:09,206 INFO L175 Difference]: Start difference. First operand has 52 places, 44 transitions, 158 flow. Second operand 4 states and 133 transitions. [2023-11-29 05:09:09,206 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 57 transitions, 280 flow [2023-11-29 05:09:09,208 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 57 transitions, 273 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-29 05:09:09,209 INFO L231 Difference]: Finished difference. Result has 54 places, 44 transitions, 166 flow [2023-11-29 05:09:09,209 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=151, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=166, PETRI_PLACES=54, PETRI_TRANSITIONS=44} [2023-11-29 05:09:09,210 INFO L281 CegarLoopForPetriNet]: 49 programPoint places, 5 predicate places. [2023-11-29 05:09:09,210 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 44 transitions, 166 flow [2023-11-29 05:09:09,210 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.25) internal successors, (97), 4 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:09:09,210 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 05:09:09,211 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:09:09,213 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_142851d4-eb66-4ad4-9584-482841cac750/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Ended with exit code 0 [2023-11-29 05:09:09,413 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_142851d4-eb66-4ad4-9584-482841cac750/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 05:09:09,413 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-11-29 05:09:09,413 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:09:09,414 INFO L85 PathProgramCache]: Analyzing trace with hash 1416462865, now seen corresponding path program 1 times [2023-11-29 05:09:09,414 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 05:09:09,414 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [774217160] [2023-11-29 05:09:09,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:09:09,414 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 05:09:09,414 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_142851d4-eb66-4ad4-9584-482841cac750/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 05:09:09,415 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_142851d4-eb66-4ad4-9584-482841cac750/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-29 05:09:09,416 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_142851d4-eb66-4ad4-9584-482841cac750/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2023-11-29 05:09:09,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:09:09,491 INFO L262 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 16 conjunts are in the unsatisfiable core [2023-11-29 05:09:09,493 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:09:09,507 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 7 [2023-11-29 05:09:09,516 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 05:09:09,517 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-29 05:09:09,527 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 05:09:09,528 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-29 05:09:09,544 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 05:09:09,545 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1 [2023-11-29 05:09:09,551 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 05:09:09,552 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-29 05:09:09,560 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 05:09:09,561 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-29 05:09:09,774 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 05:09:09,774 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 05:09:10,576 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 05:09:10,576 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 05:09:10,576 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [774217160] [2023-11-29 05:09:10,576 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [774217160] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 05:09:10,576 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 05:09:10,576 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 8 [2023-11-29 05:09:10,576 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [973262479] [2023-11-29 05:09:10,577 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 05:09:10,577 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-29 05:09:10,577 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 05:09:10,577 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-29 05:09:10,577 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2023-11-29 05:09:12,674 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 50 [2023-11-29 05:09:12,674 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 44 transitions, 166 flow. Second operand has 10 states, 10 states have (on average 23.4) internal successors, (234), 10 states have internal predecessors, (234), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:09:12,674 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 05:09:12,674 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 50 [2023-11-29 05:09:12,674 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 05:09:14,150 INFO L124 PetriNetUnfolderBase]: 389/838 cut-off events. [2023-11-29 05:09:14,150 INFO L125 PetriNetUnfolderBase]: For 79/83 co-relation queries the response was YES. [2023-11-29 05:09:14,152 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1668 conditions, 838 events. 389/838 cut-off events. For 79/83 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 4844 event pairs, 253 based on Foata normal form. 0/636 useless extension candidates. Maximal degree in co-relation 1651. Up to 233 conditions per place. [2023-11-29 05:09:14,155 INFO L140 encePairwiseOnDemand]: 44/50 looper letters, 63 selfloop transitions, 12 changer transitions 2/87 dead transitions. [2023-11-29 05:09:14,156 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 87 transitions, 426 flow [2023-11-29 05:09:14,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-29 05:09:14,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-11-29 05:09:14,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 300 transitions. [2023-11-29 05:09:14,158 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6 [2023-11-29 05:09:14,158 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 300 transitions. [2023-11-29 05:09:14,159 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 300 transitions. [2023-11-29 05:09:14,159 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 05:09:14,159 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 300 transitions. [2023-11-29 05:09:14,160 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 30.0) internal successors, (300), 10 states have internal predecessors, (300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:09:14,161 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 50.0) internal successors, (550), 11 states have internal predecessors, (550), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:09:14,162 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 50.0) internal successors, (550), 11 states have internal predecessors, (550), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:09:14,162 INFO L175 Difference]: Start difference. First operand has 54 places, 44 transitions, 166 flow. Second operand 10 states and 300 transitions. [2023-11-29 05:09:14,162 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 87 transitions, 426 flow [2023-11-29 05:09:14,164 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 87 transitions, 421 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-29 05:09:14,165 INFO L231 Difference]: Finished difference. Result has 63 places, 44 transitions, 196 flow [2023-11-29 05:09:14,165 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=161, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=196, PETRI_PLACES=63, PETRI_TRANSITIONS=44} [2023-11-29 05:09:14,166 INFO L281 CegarLoopForPetriNet]: 49 programPoint places, 14 predicate places. [2023-11-29 05:09:14,166 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 44 transitions, 196 flow [2023-11-29 05:09:14,167 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 23.4) internal successors, (234), 10 states have internal predecessors, (234), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:09:14,167 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 05:09:14,167 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 4, 1, 1] [2023-11-29 05:09:14,170 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_142851d4-eb66-4ad4-9584-482841cac750/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Ended with exit code 0 [2023-11-29 05:09:14,368 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_142851d4-eb66-4ad4-9584-482841cac750/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 05:09:14,368 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-11-29 05:09:14,369 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:09:14,369 INFO L85 PathProgramCache]: Analyzing trace with hash 739916985, now seen corresponding path program 2 times [2023-11-29 05:09:14,369 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 05:09:14,369 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [67768300] [2023-11-29 05:09:14,369 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 05:09:14,369 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 05:09:14,369 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_142851d4-eb66-4ad4-9584-482841cac750/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 05:09:14,370 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_142851d4-eb66-4ad4-9584-482841cac750/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-29 05:09:14,371 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_142851d4-eb66-4ad4-9584-482841cac750/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2023-11-29 05:09:14,447 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-29 05:09:14,447 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 05:09:14,450 INFO L262 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-29 05:09:14,452 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:09:14,464 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 7 [2023-11-29 05:09:14,473 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 05:09:14,474 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-29 05:09:14,484 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 05:09:14,485 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-29 05:09:14,503 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 05:09:14,503 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1 [2023-11-29 05:09:14,510 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 05:09:14,511 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-29 05:09:14,520 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 05:09:14,520 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-29 05:09:14,776 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 05:09:14,776 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 05:09:15,704 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 05:09:15,704 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 05:09:15,704 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [67768300] [2023-11-29 05:09:15,704 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [67768300] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 05:09:15,705 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 05:09:15,705 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 12 [2023-11-29 05:09:15,705 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1998507808] [2023-11-29 05:09:15,705 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 05:09:15,705 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-11-29 05:09:15,705 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 05:09:15,706 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-11-29 05:09:15,706 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=129, Unknown=0, NotChecked=0, Total=182 [2023-11-29 05:09:17,338 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 50 [2023-11-29 05:09:17,339 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 44 transitions, 196 flow. Second operand has 14 states, 14 states have (on average 23.571428571428573) internal successors, (330), 14 states have internal predecessors, (330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:09:17,339 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 05:09:17,339 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 50 [2023-11-29 05:09:17,339 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 05:09:20,527 INFO L124 PetriNetUnfolderBase]: 395/852 cut-off events. [2023-11-29 05:09:20,527 INFO L125 PetriNetUnfolderBase]: For 222/226 co-relation queries the response was YES. [2023-11-29 05:09:20,528 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1806 conditions, 852 events. 395/852 cut-off events. For 222/226 co-relation queries the response was YES. Maximal size of possible extension queue 64. Compared 4994 event pairs, 253 based on Foata normal form. 6/680 useless extension candidates. Maximal degree in co-relation 1787. Up to 663 conditions per place. [2023-11-29 05:09:20,531 INFO L140 encePairwiseOnDemand]: 45/50 looper letters, 21 selfloop transitions, 31 changer transitions 0/62 dead transitions. [2023-11-29 05:09:20,531 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 62 transitions, 414 flow [2023-11-29 05:09:20,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-11-29 05:09:20,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2023-11-29 05:09:20,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 542 transitions. [2023-11-29 05:09:20,536 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49272727272727274 [2023-11-29 05:09:20,536 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 542 transitions. [2023-11-29 05:09:20,536 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 542 transitions. [2023-11-29 05:09:20,536 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 05:09:20,536 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 542 transitions. [2023-11-29 05:09:20,538 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 24.636363636363637) internal successors, (542), 22 states have internal predecessors, (542), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:09:20,541 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 50.0) internal successors, (1150), 23 states have internal predecessors, (1150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:09:20,542 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 50.0) internal successors, (1150), 23 states have internal predecessors, (1150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:09:20,542 INFO L175 Difference]: Start difference. First operand has 63 places, 44 transitions, 196 flow. Second operand 22 states and 542 transitions. [2023-11-29 05:09:20,542 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 62 transitions, 414 flow [2023-11-29 05:09:20,544 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 62 transitions, 403 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-11-29 05:09:20,546 INFO L231 Difference]: Finished difference. Result has 86 places, 62 transitions, 391 flow [2023-11-29 05:09:20,546 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=185, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=391, PETRI_PLACES=86, PETRI_TRANSITIONS=62} [2023-11-29 05:09:20,546 INFO L281 CegarLoopForPetriNet]: 49 programPoint places, 37 predicate places. [2023-11-29 05:09:20,547 INFO L495 AbstractCegarLoop]: Abstraction has has 86 places, 62 transitions, 391 flow [2023-11-29 05:09:20,547 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 23.571428571428573) internal successors, (330), 14 states have internal predecessors, (330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:09:20,547 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 05:09:20,547 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:09:20,549 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_142851d4-eb66-4ad4-9584-482841cac750/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Ended with exit code 0 [2023-11-29 05:09:20,747 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_142851d4-eb66-4ad4-9584-482841cac750/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 05:09:20,748 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-11-29 05:09:20,748 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:09:20,748 INFO L85 PathProgramCache]: Analyzing trace with hash 1124133522, now seen corresponding path program 2 times [2023-11-29 05:09:20,748 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 05:09:20,749 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [180635548] [2023-11-29 05:09:20,749 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 05:09:20,749 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 05:09:20,749 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_142851d4-eb66-4ad4-9584-482841cac750/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 05:09:20,750 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_142851d4-eb66-4ad4-9584-482841cac750/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-29 05:09:20,751 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_142851d4-eb66-4ad4-9584-482841cac750/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2023-11-29 05:09:20,828 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-29 05:09:20,828 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 05:09:20,830 INFO L262 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-29 05:09:20,832 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:09:20,840 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2023-11-29 05:09:20,850 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 05:09:20,851 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-29 05:09:20,859 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 05:09:20,860 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 [2023-11-29 05:09:20,875 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 05:09:20,875 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1 [2023-11-29 05:09:20,883 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 05:09:20,883 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-29 05:09:20,889 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 05:09:20,889 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-29 05:09:21,037 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-11-29 05:09:21,037 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 05:09:21,037 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 05:09:21,037 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [180635548] [2023-11-29 05:09:21,037 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [180635548] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:09:21,037 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:09:21,037 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 05:09:21,037 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1028741275] [2023-11-29 05:09:21,038 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:09:21,038 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 05:09:21,038 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 05:09:21,038 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 05:09:21,038 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 05:09:21,126 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 50 [2023-11-29 05:09:21,126 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 62 transitions, 391 flow. Second operand has 4 states, 4 states have (on average 24.75) internal successors, (99), 4 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:09:21,126 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 05:09:21,127 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 50 [2023-11-29 05:09:21,127 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 05:09:21,334 INFO L124 PetriNetUnfolderBase]: 356/787 cut-off events. [2023-11-29 05:09:21,334 INFO L125 PetriNetUnfolderBase]: For 224/228 co-relation queries the response was YES. [2023-11-29 05:09:21,336 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1642 conditions, 787 events. 356/787 cut-off events. For 224/228 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 4599 event pairs, 222 based on Foata normal form. 22/640 useless extension candidates. Maximal degree in co-relation 1616. Up to 594 conditions per place. [2023-11-29 05:09:21,340 INFO L140 encePairwiseOnDemand]: 46/50 looper letters, 37 selfloop transitions, 12 changer transitions 0/60 dead transitions. [2023-11-29 05:09:21,340 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 60 transitions, 473 flow [2023-11-29 05:09:21,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 05:09:21,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-29 05:09:21,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 113 transitions. [2023-11-29 05:09:21,341 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.565 [2023-11-29 05:09:21,341 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 113 transitions. [2023-11-29 05:09:21,342 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 113 transitions. [2023-11-29 05:09:21,342 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 05:09:21,342 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 113 transitions. [2023-11-29 05:09:21,342 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 28.25) internal successors, (113), 4 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:09:21,343 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 50.0) internal successors, (250), 5 states have internal predecessors, (250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:09:21,343 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 50.0) internal successors, (250), 5 states have internal predecessors, (250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:09:21,343 INFO L175 Difference]: Start difference. First operand has 86 places, 62 transitions, 391 flow. Second operand 4 states and 113 transitions. [2023-11-29 05:09:21,343 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 60 transitions, 473 flow [2023-11-29 05:09:21,346 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 60 transitions, 390 flow, removed 27 selfloop flow, removed 11 redundant places. [2023-11-29 05:09:21,348 INFO L231 Difference]: Finished difference. Result has 76 places, 60 transitions, 316 flow [2023-11-29 05:09:21,348 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=292, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=316, PETRI_PLACES=76, PETRI_TRANSITIONS=60} [2023-11-29 05:09:21,349 INFO L281 CegarLoopForPetriNet]: 49 programPoint places, 27 predicate places. [2023-11-29 05:09:21,349 INFO L495 AbstractCegarLoop]: Abstraction has has 76 places, 60 transitions, 316 flow [2023-11-29 05:09:21,349 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.75) internal successors, (99), 4 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:09:21,349 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 05:09:21,349 INFO L208 CegarLoopForPetriNet]: trace histogram [11, 10, 1, 1] [2023-11-29 05:09:21,351 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_142851d4-eb66-4ad4-9584-482841cac750/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Ended with exit code 0 [2023-11-29 05:09:21,551 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_142851d4-eb66-4ad4-9584-482841cac750/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 05:09:21,552 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-11-29 05:09:21,552 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:09:21,552 INFO L85 PathProgramCache]: Analyzing trace with hash -122480457, now seen corresponding path program 3 times [2023-11-29 05:09:21,552 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 05:09:21,553 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1304935801] [2023-11-29 05:09:21,553 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-29 05:09:21,553 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 05:09:21,553 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_142851d4-eb66-4ad4-9584-482841cac750/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 05:09:21,554 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_142851d4-eb66-4ad4-9584-482841cac750/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-29 05:09:21,555 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_142851d4-eb66-4ad4-9584-482841cac750/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2023-11-29 05:09:21,824 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2023-11-29 05:09:21,824 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 05:09:21,830 INFO L262 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 18 conjunts are in the unsatisfiable core [2023-11-29 05:09:21,832 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:09:21,842 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 7 [2023-11-29 05:09:21,862 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 05:09:21,863 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1 [2023-11-29 05:09:21,872 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 05:09:21,872 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-29 05:09:21,878 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 05:09:21,878 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-29 05:09:21,888 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 05:09:21,888 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-29 05:09:21,894 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 05:09:21,894 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-29 05:09:22,475 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 0 proven. 110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 05:09:22,475 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 05:09:25,197 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 0 proven. 110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 05:09:25,198 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 05:09:25,198 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1304935801] [2023-11-29 05:09:25,198 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1304935801] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 05:09:25,198 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 05:09:25,198 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 24 [2023-11-29 05:09:25,198 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [559363855] [2023-11-29 05:09:25,198 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 05:09:25,199 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-11-29 05:09:25,199 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 05:09:25,200 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-11-29 05:09:25,200 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=173, Invalid=477, Unknown=0, NotChecked=0, Total=650 [2023-11-29 05:09:31,549 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 50 [2023-11-29 05:09:31,551 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 60 transitions, 316 flow. Second operand has 26 states, 26 states have (on average 23.76923076923077) internal successors, (618), 26 states have internal predecessors, (618), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:09:31,551 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 05:09:31,551 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 50 [2023-11-29 05:09:31,551 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 05:10:01,062 INFO L124 PetriNetUnfolderBase]: 368/823 cut-off events. [2023-11-29 05:10:01,062 INFO L125 PetriNetUnfolderBase]: For 653/657 co-relation queries the response was YES. [2023-11-29 05:10:01,063 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1781 conditions, 823 events. 368/823 cut-off events. For 653/657 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 4666 event pairs, 222 based on Foata normal form. 12/666 useless extension candidates. Maximal degree in co-relation 1757. Up to 611 conditions per place. [2023-11-29 05:10:01,066 INFO L140 encePairwiseOnDemand]: 45/50 looper letters, 19 selfloop transitions, 67 changer transitions 0/96 dead transitions. [2023-11-29 05:10:01,066 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 121 places, 96 transitions, 740 flow [2023-11-29 05:10:01,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2023-11-29 05:10:01,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2023-11-29 05:10:01,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 1110 transitions. [2023-11-29 05:10:01,073 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4826086956521739 [2023-11-29 05:10:01,073 INFO L72 ComplementDD]: Start complementDD. Operand 46 states and 1110 transitions. [2023-11-29 05:10:01,073 INFO L73 IsDeterministic]: Start isDeterministic. Operand 46 states and 1110 transitions. [2023-11-29 05:10:01,074 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 05:10:01,074 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 46 states and 1110 transitions. [2023-11-29 05:10:01,078 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 47 states, 46 states have (on average 24.130434782608695) internal successors, (1110), 46 states have internal predecessors, (1110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:10:01,082 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 47 states, 47 states have (on average 50.0) internal successors, (2350), 47 states have internal predecessors, (2350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:10:01,082 INFO L81 ComplementDD]: Finished complementDD. Result has 47 states, 47 states have (on average 50.0) internal successors, (2350), 47 states have internal predecessors, (2350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:10:01,082 INFO L175 Difference]: Start difference. First operand has 76 places, 60 transitions, 316 flow. Second operand 46 states and 1110 transitions. [2023-11-29 05:10:01,083 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 121 places, 96 transitions, 740 flow [2023-11-29 05:10:01,085 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 119 places, 96 transitions, 715 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-29 05:10:01,087 INFO L231 Difference]: Finished difference. Result has 131 places, 96 transitions, 731 flow [2023-11-29 05:10:01,088 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=303, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=46, PETRI_FLOW=731, PETRI_PLACES=131, PETRI_TRANSITIONS=96} [2023-11-29 05:10:01,088 INFO L281 CegarLoopForPetriNet]: 49 programPoint places, 82 predicate places. [2023-11-29 05:10:01,088 INFO L495 AbstractCegarLoop]: Abstraction has has 131 places, 96 transitions, 731 flow [2023-11-29 05:10:01,089 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 23.76923076923077) internal successors, (618), 26 states have internal predecessors, (618), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:10:01,089 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 05:10:01,089 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:10:01,092 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_142851d4-eb66-4ad4-9584-482841cac750/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Ended with exit code 0 [2023-11-29 05:10:01,289 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_142851d4-eb66-4ad4-9584-482841cac750/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 05:10:01,290 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-11-29 05:10:01,290 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:10:01,290 INFO L85 PathProgramCache]: Analyzing trace with hash -318310730, now seen corresponding path program 1 times [2023-11-29 05:10:01,290 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 05:10:01,290 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1876700089] [2023-11-29 05:10:01,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:10:01,290 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 05:10:01,291 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_142851d4-eb66-4ad4-9584-482841cac750/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 05:10:01,291 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_142851d4-eb66-4ad4-9584-482841cac750/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-29 05:10:01,292 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_142851d4-eb66-4ad4-9584-482841cac750/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2023-11-29 05:10:01,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:10:01,362 INFO L262 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-29 05:10:01,363 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:10:01,394 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 05:10:01,394 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 05:10:01,395 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 05:10:01,395 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1876700089] [2023-11-29 05:10:01,395 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1876700089] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:10:01,395 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:10:01,395 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 05:10:01,395 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [91536168] [2023-11-29 05:10:01,395 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:10:01,396 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 05:10:01,396 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 05:10:01,396 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 05:10:01,396 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 05:10:01,397 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 50 [2023-11-29 05:10:01,397 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 131 places, 96 transitions, 731 flow. Second operand has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:10:01,397 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 05:10:01,397 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 50 [2023-11-29 05:10:01,397 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 05:10:01,601 INFO L124 PetriNetUnfolderBase]: 527/1100 cut-off events. [2023-11-29 05:10:01,601 INFO L125 PetriNetUnfolderBase]: For 326/330 co-relation queries the response was YES. [2023-11-29 05:10:01,603 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2485 conditions, 1100 events. 527/1100 cut-off events. For 326/330 co-relation queries the response was YES. Maximal size of possible extension queue 78. Compared 6455 event pairs, 201 based on Foata normal form. 4/887 useless extension candidates. Maximal degree in co-relation 2449. Up to 535 conditions per place. [2023-11-29 05:10:01,606 INFO L140 encePairwiseOnDemand]: 47/50 looper letters, 90 selfloop transitions, 2 changer transitions 4/107 dead transitions. [2023-11-29 05:10:01,607 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 133 places, 107 transitions, 951 flow [2023-11-29 05:10:01,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 05:10:01,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-29 05:10:01,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 100 transitions. [2023-11-29 05:10:01,608 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6666666666666666 [2023-11-29 05:10:01,608 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 100 transitions. [2023-11-29 05:10:01,608 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 100 transitions. [2023-11-29 05:10:01,608 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 05:10:01,608 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 100 transitions. [2023-11-29 05:10:01,608 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 33.333333333333336) internal successors, (100), 3 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:10:01,609 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 50.0) internal successors, (200), 4 states have internal predecessors, (200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:10:01,609 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 50.0) internal successors, (200), 4 states have internal predecessors, (200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:10:01,609 INFO L175 Difference]: Start difference. First operand has 131 places, 96 transitions, 731 flow. Second operand 3 states and 100 transitions. [2023-11-29 05:10:01,609 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 133 places, 107 transitions, 951 flow [2023-11-29 05:10:01,615 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 112 places, 107 transitions, 787 flow, removed 51 selfloop flow, removed 21 redundant places. [2023-11-29 05:10:01,616 INFO L231 Difference]: Finished difference. Result has 113 places, 96 transitions, 572 flow [2023-11-29 05:10:01,617 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=567, PETRI_DIFFERENCE_MINUEND_PLACES=110, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=96, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=94, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=572, PETRI_PLACES=113, PETRI_TRANSITIONS=96} [2023-11-29 05:10:01,617 INFO L281 CegarLoopForPetriNet]: 49 programPoint places, 64 predicate places. [2023-11-29 05:10:01,617 INFO L495 AbstractCegarLoop]: Abstraction has has 113 places, 96 transitions, 572 flow [2023-11-29 05:10:01,617 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:10:01,617 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 05:10:01,618 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:10:01,620 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_142851d4-eb66-4ad4-9584-482841cac750/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Ended with exit code 0 [2023-11-29 05:10:01,818 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_142851d4-eb66-4ad4-9584-482841cac750/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 05:10:01,818 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-11-29 05:10:01,818 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:10:01,818 INFO L85 PathProgramCache]: Analyzing trace with hash 1885110870, now seen corresponding path program 1 times [2023-11-29 05:10:01,819 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 05:10:01,819 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [900902692] [2023-11-29 05:10:01,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:10:01,819 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 05:10:01,819 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_142851d4-eb66-4ad4-9584-482841cac750/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 05:10:01,820 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_142851d4-eb66-4ad4-9584-482841cac750/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-29 05:10:01,821 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_142851d4-eb66-4ad4-9584-482841cac750/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2023-11-29 05:10:01,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:10:01,906 INFO L262 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-29 05:10:01,908 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:10:01,946 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 05:10:01,946 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 05:10:01,947 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 05:10:01,947 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [900902692] [2023-11-29 05:10:01,947 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [900902692] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:10:01,947 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:10:01,947 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 05:10:01,947 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1597252483] [2023-11-29 05:10:01,947 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:10:01,947 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 05:10:01,947 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 05:10:01,948 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 05:10:01,948 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 05:10:01,948 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 50 [2023-11-29 05:10:01,948 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 96 transitions, 572 flow. Second operand has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:10:01,948 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 05:10:01,948 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 50 [2023-11-29 05:10:01,948 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 05:10:02,154 INFO L124 PetriNetUnfolderBase]: 512/1141 cut-off events. [2023-11-29 05:10:02,154 INFO L125 PetriNetUnfolderBase]: For 474/477 co-relation queries the response was YES. [2023-11-29 05:10:02,156 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2570 conditions, 1141 events. 512/1141 cut-off events. For 474/477 co-relation queries the response was YES. Maximal size of possible extension queue 74. Compared 6998 event pairs, 210 based on Foata normal form. 27/982 useless extension candidates. Maximal degree in co-relation 2533. Up to 616 conditions per place. [2023-11-29 05:10:02,159 INFO L140 encePairwiseOnDemand]: 47/50 looper letters, 89 selfloop transitions, 2 changer transitions 6/108 dead transitions. [2023-11-29 05:10:02,159 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 113 places, 108 transitions, 795 flow [2023-11-29 05:10:02,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 05:10:02,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-29 05:10:02,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 101 transitions. [2023-11-29 05:10:02,160 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6733333333333333 [2023-11-29 05:10:02,160 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 101 transitions. [2023-11-29 05:10:02,160 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 101 transitions. [2023-11-29 05:10:02,160 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 05:10:02,160 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 101 transitions. [2023-11-29 05:10:02,161 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 33.666666666666664) internal successors, (101), 3 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:10:02,161 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 50.0) internal successors, (200), 4 states have internal predecessors, (200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:10:02,161 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 50.0) internal successors, (200), 4 states have internal predecessors, (200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:10:02,161 INFO L175 Difference]: Start difference. First operand has 113 places, 96 transitions, 572 flow. Second operand 3 states and 101 transitions. [2023-11-29 05:10:02,161 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 113 places, 108 transitions, 795 flow [2023-11-29 05:10:02,166 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 112 places, 108 transitions, 793 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-29 05:10:02,168 INFO L231 Difference]: Finished difference. Result has 113 places, 97 transitions, 584 flow [2023-11-29 05:10:02,168 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=570, PETRI_DIFFERENCE_MINUEND_PLACES=110, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=96, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=94, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=584, PETRI_PLACES=113, PETRI_TRANSITIONS=97} [2023-11-29 05:10:02,169 INFO L281 CegarLoopForPetriNet]: 49 programPoint places, 64 predicate places. [2023-11-29 05:10:02,169 INFO L495 AbstractCegarLoop]: Abstraction has has 113 places, 97 transitions, 584 flow [2023-11-29 05:10:02,169 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:10:02,169 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 05:10:02,169 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:10:02,172 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_142851d4-eb66-4ad4-9584-482841cac750/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2023-11-29 05:10:02,371 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_142851d4-eb66-4ad4-9584-482841cac750/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 05:10:02,371 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-11-29 05:10:02,372 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:10:02,372 INFO L85 PathProgramCache]: Analyzing trace with hash -1836741660, now seen corresponding path program 1 times [2023-11-29 05:10:02,372 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 05:10:02,372 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1420953828] [2023-11-29 05:10:02,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:10:02,372 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 05:10:02,372 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_142851d4-eb66-4ad4-9584-482841cac750/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 05:10:02,373 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_142851d4-eb66-4ad4-9584-482841cac750/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-29 05:10:02,374 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_142851d4-eb66-4ad4-9584-482841cac750/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2023-11-29 05:10:02,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:10:02,474 INFO L262 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-29 05:10:02,476 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:10:02,595 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 05:10:02,595 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 05:10:02,724 INFO L349 Elim1Store]: treesize reduction 210, result has 3.2 percent of original size [2023-11-29 05:10:02,724 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 90 treesize of output 27 [2023-11-29 05:10:02,796 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 05:10:02,796 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 05:10:02,796 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1420953828] [2023-11-29 05:10:02,796 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1420953828] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 05:10:02,796 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 05:10:02,796 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 5 [2023-11-29 05:10:02,796 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1043802415] [2023-11-29 05:10:02,796 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 05:10:02,797 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-29 05:10:02,797 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 05:10:02,797 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-29 05:10:02,798 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-29 05:10:02,798 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 50 [2023-11-29 05:10:02,798 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 97 transitions, 584 flow. Second operand has 6 states, 6 states have (on average 28.0) internal successors, (168), 6 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:10:02,798 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 05:10:02,798 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 50 [2023-11-29 05:10:02,798 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 05:10:03,218 INFO L124 PetriNetUnfolderBase]: 668/1414 cut-off events. [2023-11-29 05:10:03,218 INFO L125 PetriNetUnfolderBase]: For 687/690 co-relation queries the response was YES. [2023-11-29 05:10:03,221 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3328 conditions, 1414 events. 668/1414 cut-off events. For 687/690 co-relation queries the response was YES. Maximal size of possible extension queue 79. Compared 8727 event pairs, 126 based on Foata normal form. 3/1180 useless extension candidates. Maximal degree in co-relation 3289. Up to 330 conditions per place. [2023-11-29 05:10:03,225 INFO L140 encePairwiseOnDemand]: 46/50 looper letters, 102 selfloop transitions, 4 changer transitions 12/129 dead transitions. [2023-11-29 05:10:03,225 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 117 places, 129 transitions, 903 flow [2023-11-29 05:10:03,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 05:10:03,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-29 05:10:03,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 169 transitions. [2023-11-29 05:10:03,226 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.676 [2023-11-29 05:10:03,226 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 169 transitions. [2023-11-29 05:10:03,226 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 169 transitions. [2023-11-29 05:10:03,226 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 05:10:03,227 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 169 transitions. [2023-11-29 05:10:03,227 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 33.8) internal successors, (169), 5 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:10:03,228 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 50.0) internal successors, (300), 6 states have internal predecessors, (300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:10:03,228 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 50.0) internal successors, (300), 6 states have internal predecessors, (300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:10:03,228 INFO L175 Difference]: Start difference. First operand has 113 places, 97 transitions, 584 flow. Second operand 5 states and 169 transitions. [2023-11-29 05:10:03,228 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 117 places, 129 transitions, 903 flow [2023-11-29 05:10:03,235 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 116 places, 129 transitions, 899 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-11-29 05:10:03,238 INFO L231 Difference]: Finished difference. Result has 117 places, 98 transitions, 600 flow [2023-11-29 05:10:03,238 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=580, PETRI_DIFFERENCE_MINUEND_PLACES=112, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=97, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=93, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=600, PETRI_PLACES=117, PETRI_TRANSITIONS=98} [2023-11-29 05:10:03,239 INFO L281 CegarLoopForPetriNet]: 49 programPoint places, 68 predicate places. [2023-11-29 05:10:03,239 INFO L495 AbstractCegarLoop]: Abstraction has has 117 places, 98 transitions, 600 flow [2023-11-29 05:10:03,239 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 28.0) internal successors, (168), 6 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:10:03,239 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 05:10:03,239 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:10:03,243 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_142851d4-eb66-4ad4-9584-482841cac750/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (17)] Ended with exit code 0 [2023-11-29 05:10:03,440 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_142851d4-eb66-4ad4-9584-482841cac750/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 05:10:03,440 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-11-29 05:10:03,440 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:10:03,440 INFO L85 PathProgramCache]: Analyzing trace with hash 715823635, now seen corresponding path program 2 times [2023-11-29 05:10:03,440 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 05:10:03,441 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1515665828] [2023-11-29 05:10:03,441 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 05:10:03,441 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 05:10:03,441 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_142851d4-eb66-4ad4-9584-482841cac750/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 05:10:03,442 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_142851d4-eb66-4ad4-9584-482841cac750/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-29 05:10:03,442 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_142851d4-eb66-4ad4-9584-482841cac750/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2023-11-29 05:10:03,577 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-29 05:10:03,578 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 05:10:03,582 INFO L262 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 10 conjunts are in the unsatisfiable core [2023-11-29 05:10:03,583 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:10:03,840 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 05:10:03,841 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 05:10:04,377 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 05:10:04,377 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 05:10:04,377 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1515665828] [2023-11-29 05:10:04,377 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1515665828] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 05:10:04,377 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 05:10:04,377 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2023-11-29 05:10:04,377 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1500128343] [2023-11-29 05:10:04,378 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 05:10:04,378 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-29 05:10:04,378 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 05:10:04,378 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-29 05:10:04,378 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2023-11-29 05:10:04,447 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 50 [2023-11-29 05:10:04,447 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 117 places, 98 transitions, 600 flow. Second operand has 12 states, 12 states have (on average 26.166666666666668) internal successors, (314), 12 states have internal predecessors, (314), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:10:04,447 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 05:10:04,447 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 50 [2023-11-29 05:10:04,448 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 05:10:05,106 INFO L124 PetriNetUnfolderBase]: 642/1403 cut-off events. [2023-11-29 05:10:05,106 INFO L125 PetriNetUnfolderBase]: For 1068/1073 co-relation queries the response was YES. [2023-11-29 05:10:05,109 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3292 conditions, 1403 events. 642/1403 cut-off events. For 1068/1073 co-relation queries the response was YES. Maximal size of possible extension queue 84. Compared 8963 event pairs, 404 based on Foata normal form. 26/1194 useless extension candidates. Maximal degree in co-relation 3251. Up to 806 conditions per place. [2023-11-29 05:10:05,112 INFO L140 encePairwiseOnDemand]: 44/50 looper letters, 41 selfloop transitions, 45 changer transitions 46/143 dead transitions. [2023-11-29 05:10:05,112 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 125 places, 143 transitions, 986 flow [2023-11-29 05:10:05,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-29 05:10:05,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-11-29 05:10:05,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 279 transitions. [2023-11-29 05:10:05,114 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.62 [2023-11-29 05:10:05,114 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 279 transitions. [2023-11-29 05:10:05,114 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 279 transitions. [2023-11-29 05:10:05,114 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 05:10:05,115 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 279 transitions. [2023-11-29 05:10:05,115 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 31.0) internal successors, (279), 9 states have internal predecessors, (279), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:10:05,116 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 50.0) internal successors, (500), 10 states have internal predecessors, (500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:10:05,116 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 50.0) internal successors, (500), 10 states have internal predecessors, (500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:10:05,116 INFO L175 Difference]: Start difference. First operand has 117 places, 98 transitions, 600 flow. Second operand 9 states and 279 transitions. [2023-11-29 05:10:05,116 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 125 places, 143 transitions, 986 flow [2023-11-29 05:10:05,122 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 122 places, 143 transitions, 976 flow, removed 1 selfloop flow, removed 3 redundant places. [2023-11-29 05:10:05,123 INFO L231 Difference]: Finished difference. Result has 126 places, 97 transitions, 687 flow [2023-11-29 05:10:05,124 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=592, PETRI_DIFFERENCE_MINUEND_PLACES=114, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=98, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=687, PETRI_PLACES=126, PETRI_TRANSITIONS=97} [2023-11-29 05:10:05,124 INFO L281 CegarLoopForPetriNet]: 49 programPoint places, 77 predicate places. [2023-11-29 05:10:05,124 INFO L495 AbstractCegarLoop]: Abstraction has has 126 places, 97 transitions, 687 flow [2023-11-29 05:10:05,124 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 26.166666666666668) internal successors, (314), 12 states have internal predecessors, (314), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:10:05,124 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 05:10:05,124 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:10:05,128 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_142851d4-eb66-4ad4-9584-482841cac750/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2023-11-29 05:10:05,325 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_142851d4-eb66-4ad4-9584-482841cac750/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 05:10:05,325 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-11-29 05:10:05,325 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:10:05,325 INFO L85 PathProgramCache]: Analyzing trace with hash -1113547666, now seen corresponding path program 3 times [2023-11-29 05:10:05,325 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 05:10:05,326 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [653080853] [2023-11-29 05:10:05,326 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-29 05:10:05,326 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 05:10:05,326 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_142851d4-eb66-4ad4-9584-482841cac750/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 05:10:05,327 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_142851d4-eb66-4ad4-9584-482841cac750/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-29 05:10:05,327 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_142851d4-eb66-4ad4-9584-482841cac750/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2023-11-29 05:10:05,449 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-11-29 05:10:05,449 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 05:10:05,453 INFO L262 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-29 05:10:05,455 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:10:05,586 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 4 proven. 3 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-29 05:10:05,586 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 05:10:06,030 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-29 05:10:06,030 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 05:10:06,030 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [653080853] [2023-11-29 05:10:06,030 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [653080853] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 05:10:06,031 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 05:10:06,031 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 4] total 6 [2023-11-29 05:10:06,031 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1633936504] [2023-11-29 05:10:06,031 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 05:10:06,031 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 05:10:06,032 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 05:10:06,032 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 05:10:06,032 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-11-29 05:10:06,032 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 50 [2023-11-29 05:10:06,033 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 126 places, 97 transitions, 687 flow. Second operand has 7 states, 7 states have (on average 28.285714285714285) internal successors, (198), 7 states have internal predecessors, (198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:10:06,033 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 05:10:06,033 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 50 [2023-11-29 05:10:06,033 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 05:10:06,537 INFO L124 PetriNetUnfolderBase]: 952/2031 cut-off events. [2023-11-29 05:10:06,537 INFO L125 PetriNetUnfolderBase]: For 2425/2429 co-relation queries the response was YES. [2023-11-29 05:10:06,541 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5107 conditions, 2031 events. 952/2031 cut-off events. For 2425/2429 co-relation queries the response was YES. Maximal size of possible extension queue 101. Compared 13541 event pairs, 344 based on Foata normal form. 36/1733 useless extension candidates. Maximal degree in co-relation 5063. Up to 621 conditions per place. [2023-11-29 05:10:06,547 INFO L140 encePairwiseOnDemand]: 47/50 looper letters, 108 selfloop transitions, 7 changer transitions 0/126 dead transitions. [2023-11-29 05:10:06,548 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 124 places, 126 transitions, 1029 flow [2023-11-29 05:10:06,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 05:10:06,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-29 05:10:06,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 139 transitions. [2023-11-29 05:10:06,549 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.695 [2023-11-29 05:10:06,549 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 139 transitions. [2023-11-29 05:10:06,549 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 139 transitions. [2023-11-29 05:10:06,549 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 05:10:06,549 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 139 transitions. [2023-11-29 05:10:06,550 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 34.75) internal successors, (139), 4 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:10:06,550 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 50.0) internal successors, (250), 5 states have internal predecessors, (250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:10:06,550 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 50.0) internal successors, (250), 5 states have internal predecessors, (250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:10:06,550 INFO L175 Difference]: Start difference. First operand has 126 places, 97 transitions, 687 flow. Second operand 4 states and 139 transitions. [2023-11-29 05:10:06,550 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 124 places, 126 transitions, 1029 flow [2023-11-29 05:10:06,558 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 117 places, 126 transitions, 955 flow, removed 13 selfloop flow, removed 7 redundant places. [2023-11-29 05:10:06,559 INFO L231 Difference]: Finished difference. Result has 119 places, 102 transitions, 701 flow [2023-11-29 05:10:06,560 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=627, PETRI_DIFFERENCE_MINUEND_PLACES=114, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=97, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=91, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=701, PETRI_PLACES=119, PETRI_TRANSITIONS=102} [2023-11-29 05:10:06,560 INFO L281 CegarLoopForPetriNet]: 49 programPoint places, 70 predicate places. [2023-11-29 05:10:06,560 INFO L495 AbstractCegarLoop]: Abstraction has has 119 places, 102 transitions, 701 flow [2023-11-29 05:10:06,560 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 28.285714285714285) internal successors, (198), 7 states have internal predecessors, (198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:10:06,560 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 05:10:06,560 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:10:06,574 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_142851d4-eb66-4ad4-9584-482841cac750/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (19)] Ended with exit code 0 [2023-11-29 05:10:06,761 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_142851d4-eb66-4ad4-9584-482841cac750/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 05:10:06,761 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-11-29 05:10:06,761 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:10:06,761 INFO L85 PathProgramCache]: Analyzing trace with hash -676262624, now seen corresponding path program 4 times [2023-11-29 05:10:06,762 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 05:10:06,762 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [979812417] [2023-11-29 05:10:06,762 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-11-29 05:10:06,762 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 05:10:06,762 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_142851d4-eb66-4ad4-9584-482841cac750/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 05:10:06,763 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_142851d4-eb66-4ad4-9584-482841cac750/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-29 05:10:06,764 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_142851d4-eb66-4ad4-9584-482841cac750/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2023-11-29 05:10:06,865 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-11-29 05:10:06,865 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 05:10:06,871 INFO L262 TraceCheckSpWp]: Trace formula consists of 169 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-29 05:10:06,872 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:10:06,997 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-11-29 05:10:06,998 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 05:10:07,103 INFO L349 Elim1Store]: treesize reduction 210, result has 3.2 percent of original size [2023-11-29 05:10:07,103 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 90 treesize of output 27 [2023-11-29 05:10:07,240 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-11-29 05:10:07,240 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 05:10:07,240 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [979812417] [2023-11-29 05:10:07,241 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [979812417] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 05:10:07,241 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 05:10:07,241 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2023-11-29 05:10:07,241 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [952605123] [2023-11-29 05:10:07,241 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 05:10:07,242 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-29 05:10:07,242 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 05:10:07,242 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-29 05:10:07,242 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2023-11-29 05:10:07,243 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 50 [2023-11-29 05:10:07,243 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 119 places, 102 transitions, 701 flow. Second operand has 8 states, 8 states have (on average 27.25) internal successors, (218), 8 states have internal predecessors, (218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:10:07,243 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 05:10:07,243 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 50 [2023-11-29 05:10:07,244 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 05:10:08,007 INFO L124 PetriNetUnfolderBase]: 1264/2625 cut-off events. [2023-11-29 05:10:08,007 INFO L125 PetriNetUnfolderBase]: For 2967/2971 co-relation queries the response was YES. [2023-11-29 05:10:08,013 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6652 conditions, 2625 events. 1264/2625 cut-off events. For 2967/2971 co-relation queries the response was YES. Maximal size of possible extension queue 122. Compared 17931 event pairs, 232 based on Foata normal form. 8/2197 useless extension candidates. Maximal degree in co-relation 6610. Up to 584 conditions per place. [2023-11-29 05:10:08,020 INFO L140 encePairwiseOnDemand]: 46/50 looper letters, 106 selfloop transitions, 12 changer transitions 18/147 dead transitions. [2023-11-29 05:10:08,020 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 124 places, 147 transitions, 1113 flow [2023-11-29 05:10:08,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-29 05:10:08,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-29 05:10:08,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 208 transitions. [2023-11-29 05:10:08,022 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6933333333333334 [2023-11-29 05:10:08,022 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 208 transitions. [2023-11-29 05:10:08,022 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 208 transitions. [2023-11-29 05:10:08,022 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 05:10:08,022 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 208 transitions. [2023-11-29 05:10:08,023 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 34.666666666666664) internal successors, (208), 6 states have internal predecessors, (208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:10:08,024 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 50.0) internal successors, (350), 7 states have internal predecessors, (350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:10:08,024 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 50.0) internal successors, (350), 7 states have internal predecessors, (350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:10:08,024 INFO L175 Difference]: Start difference. First operand has 119 places, 102 transitions, 701 flow. Second operand 6 states and 208 transitions. [2023-11-29 05:10:08,024 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 124 places, 147 transitions, 1113 flow [2023-11-29 05:10:08,034 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 124 places, 147 transitions, 1099 flow, removed 7 selfloop flow, removed 0 redundant places. [2023-11-29 05:10:08,037 INFO L231 Difference]: Finished difference. Result has 128 places, 105 transitions, 776 flow [2023-11-29 05:10:08,038 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=687, PETRI_DIFFERENCE_MINUEND_PLACES=119, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=102, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=92, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=776, PETRI_PLACES=128, PETRI_TRANSITIONS=105} [2023-11-29 05:10:08,038 INFO L281 CegarLoopForPetriNet]: 49 programPoint places, 79 predicate places. [2023-11-29 05:10:08,038 INFO L495 AbstractCegarLoop]: Abstraction has has 128 places, 105 transitions, 776 flow [2023-11-29 05:10:08,039 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 27.25) internal successors, (218), 8 states have internal predecessors, (218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:10:08,039 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 05:10:08,039 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:10:08,042 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_142851d4-eb66-4ad4-9584-482841cac750/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (20)] Ended with exit code 0 [2023-11-29 05:10:08,239 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_142851d4-eb66-4ad4-9584-482841cac750/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 05:10:08,239 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-11-29 05:10:08,240 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:10:08,240 INFO L85 PathProgramCache]: Analyzing trace with hash 149304762, now seen corresponding path program 5 times [2023-11-29 05:10:08,240 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 05:10:08,240 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [314602300] [2023-11-29 05:10:08,240 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-11-29 05:10:08,240 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 05:10:08,240 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_142851d4-eb66-4ad4-9584-482841cac750/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 05:10:08,241 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_142851d4-eb66-4ad4-9584-482841cac750/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-29 05:10:08,242 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_142851d4-eb66-4ad4-9584-482841cac750/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2023-11-29 05:10:08,446 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2023-11-29 05:10:08,446 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 05:10:08,454 INFO L262 TraceCheckSpWp]: Trace formula consists of 169 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-29 05:10:08,455 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:10:08,694 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-29 05:10:08,694 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 05:10:08,858 INFO L349 Elim1Store]: treesize reduction 216, result has 4.0 percent of original size [2023-11-29 05:10:08,858 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 91 treesize of output 29 [2023-11-29 05:10:08,978 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-29 05:10:08,978 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 05:10:08,978 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [314602300] [2023-11-29 05:10:08,978 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [314602300] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 05:10:08,978 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 05:10:08,979 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 8 [2023-11-29 05:10:08,979 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [489996639] [2023-11-29 05:10:08,979 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 05:10:08,979 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-29 05:10:08,979 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 05:10:08,980 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-29 05:10:08,980 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2023-11-29 05:10:08,980 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 50 [2023-11-29 05:10:08,980 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 128 places, 105 transitions, 776 flow. Second operand has 9 states, 9 states have (on average 27.0) internal successors, (243), 9 states have internal predecessors, (243), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:10:08,980 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 05:10:08,980 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 50 [2023-11-29 05:10:08,980 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 05:10:13,158 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-29 05:10:17,627 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-29 05:10:18,261 INFO L124 PetriNetUnfolderBase]: 1368/2803 cut-off events. [2023-11-29 05:10:18,261 INFO L125 PetriNetUnfolderBase]: For 4753/4755 co-relation queries the response was YES. [2023-11-29 05:10:18,268 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7484 conditions, 2803 events. 1368/2803 cut-off events. For 4753/4755 co-relation queries the response was YES. Maximal size of possible extension queue 131. Compared 18998 event pairs, 168 based on Foata normal form. 2/2337 useless extension candidates. Maximal degree in co-relation 7436. Up to 416 conditions per place. [2023-11-29 05:10:18,279 INFO L140 encePairwiseOnDemand]: 46/50 looper letters, 126 selfloop transitions, 14 changer transitions 36/187 dead transitions. [2023-11-29 05:10:18,279 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 137 places, 187 transitions, 1353 flow [2023-11-29 05:10:18,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-29 05:10:18,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-11-29 05:10:18,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 340 transitions. [2023-11-29 05:10:18,280 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.68 [2023-11-29 05:10:18,281 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 340 transitions. [2023-11-29 05:10:18,281 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 340 transitions. [2023-11-29 05:10:18,281 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 05:10:18,281 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 340 transitions. [2023-11-29 05:10:18,282 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 34.0) internal successors, (340), 10 states have internal predecessors, (340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:10:18,282 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 50.0) internal successors, (550), 11 states have internal predecessors, (550), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:10:18,283 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 50.0) internal successors, (550), 11 states have internal predecessors, (550), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:10:18,283 INFO L175 Difference]: Start difference. First operand has 128 places, 105 transitions, 776 flow. Second operand 10 states and 340 transitions. [2023-11-29 05:10:18,283 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 137 places, 187 transitions, 1353 flow [2023-11-29 05:10:18,293 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 133 places, 187 transitions, 1299 flow, removed 14 selfloop flow, removed 4 redundant places. [2023-11-29 05:10:18,295 INFO L231 Difference]: Finished difference. Result has 134 places, 107 transitions, 780 flow [2023-11-29 05:10:18,295 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=728, PETRI_DIFFERENCE_MINUEND_PLACES=124, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=105, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=92, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=780, PETRI_PLACES=134, PETRI_TRANSITIONS=107} [2023-11-29 05:10:18,295 INFO L281 CegarLoopForPetriNet]: 49 programPoint places, 85 predicate places. [2023-11-29 05:10:18,296 INFO L495 AbstractCegarLoop]: Abstraction has has 134 places, 107 transitions, 780 flow [2023-11-29 05:10:18,296 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 27.0) internal successors, (243), 9 states have internal predecessors, (243), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:10:18,296 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 05:10:18,296 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:10:18,301 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_142851d4-eb66-4ad4-9584-482841cac750/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (21)] Ended with exit code 0 [2023-11-29 05:10:18,496 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_142851d4-eb66-4ad4-9584-482841cac750/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 05:10:18,497 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-11-29 05:10:18,497 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:10:18,497 INFO L85 PathProgramCache]: Analyzing trace with hash 899152145, now seen corresponding path program 6 times [2023-11-29 05:10:18,497 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 05:10:18,497 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2139899851] [2023-11-29 05:10:18,497 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-11-29 05:10:18,498 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 05:10:18,498 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_142851d4-eb66-4ad4-9584-482841cac750/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 05:10:18,499 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_142851d4-eb66-4ad4-9584-482841cac750/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-29 05:10:18,500 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_142851d4-eb66-4ad4-9584-482841cac750/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2023-11-29 05:10:18,690 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2023-11-29 05:10:18,690 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 05:10:18,697 INFO L262 TraceCheckSpWp]: Trace formula consists of 178 conjuncts, 15 conjunts are in the unsatisfiable core [2023-11-29 05:10:18,698 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:10:19,440 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 8 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 05:10:19,440 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 05:10:20,622 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 6 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 05:10:20,622 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 05:10:20,622 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2139899851] [2023-11-29 05:10:20,622 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2139899851] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 05:10:20,622 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 05:10:20,622 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 17 [2023-11-29 05:10:20,622 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1949601316] [2023-11-29 05:10:20,623 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 05:10:20,623 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-11-29 05:10:20,623 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 05:10:20,623 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-11-29 05:10:20,623 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=208, Unknown=0, NotChecked=0, Total=306 [2023-11-29 05:10:20,776 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 50 [2023-11-29 05:10:20,777 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 134 places, 107 transitions, 780 flow. Second operand has 18 states, 18 states have (on average 25.77777777777778) internal successors, (464), 18 states have internal predecessors, (464), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:10:20,777 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 05:10:20,777 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 50 [2023-11-29 05:10:20,777 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 05:10:25,438 INFO L124 PetriNetUnfolderBase]: 3574/7292 cut-off events. [2023-11-29 05:10:25,438 INFO L125 PetriNetUnfolderBase]: For 10599/10607 co-relation queries the response was YES. [2023-11-29 05:10:25,455 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18481 conditions, 7292 events. 3574/7292 cut-off events. For 10599/10607 co-relation queries the response was YES. Maximal size of possible extension queue 318. Compared 58518 event pairs, 782 based on Foata normal form. 95/6157 useless extension candidates. Maximal degree in co-relation 18433. Up to 1397 conditions per place. [2023-11-29 05:10:25,468 INFO L140 encePairwiseOnDemand]: 45/50 looper letters, 140 selfloop transitions, 30 changer transitions 65/246 dead transitions. [2023-11-29 05:10:25,468 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 148 places, 246 transitions, 1919 flow [2023-11-29 05:10:25,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-29 05:10:25,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2023-11-29 05:10:25,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 498 transitions. [2023-11-29 05:10:25,470 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.664 [2023-11-29 05:10:25,470 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 498 transitions. [2023-11-29 05:10:25,470 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 498 transitions. [2023-11-29 05:10:25,471 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 05:10:25,471 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 498 transitions. [2023-11-29 05:10:25,471 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 33.2) internal successors, (498), 15 states have internal predecessors, (498), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:10:25,472 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 50.0) internal successors, (800), 16 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:10:25,473 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 50.0) internal successors, (800), 16 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:10:25,473 INFO L175 Difference]: Start difference. First operand has 134 places, 107 transitions, 780 flow. Second operand 15 states and 498 transitions. [2023-11-29 05:10:25,473 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 148 places, 246 transitions, 1919 flow [2023-11-29 05:10:25,491 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 141 places, 246 transitions, 1811 flow, removed 19 selfloop flow, removed 7 redundant places. [2023-11-29 05:10:25,494 INFO L231 Difference]: Finished difference. Result has 143 places, 125 transitions, 1008 flow [2023-11-29 05:10:25,494 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=738, PETRI_DIFFERENCE_MINUEND_PLACES=127, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=107, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=1008, PETRI_PLACES=143, PETRI_TRANSITIONS=125} [2023-11-29 05:10:25,495 INFO L281 CegarLoopForPetriNet]: 49 programPoint places, 94 predicate places. [2023-11-29 05:10:25,495 INFO L495 AbstractCegarLoop]: Abstraction has has 143 places, 125 transitions, 1008 flow [2023-11-29 05:10:25,495 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 25.77777777777778) internal successors, (464), 18 states have internal predecessors, (464), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:10:25,495 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 05:10:25,495 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:10:25,499 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_142851d4-eb66-4ad4-9584-482841cac750/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (22)] Forceful destruction successful, exit code 0 [2023-11-29 05:10:25,696 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_142851d4-eb66-4ad4-9584-482841cac750/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 05:10:25,696 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-11-29 05:10:25,696 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:10:25,696 INFO L85 PathProgramCache]: Analyzing trace with hash -86542782, now seen corresponding path program 7 times [2023-11-29 05:10:25,696 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 05:10:25,697 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1877554116] [2023-11-29 05:10:25,697 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-11-29 05:10:25,697 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 05:10:25,697 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_142851d4-eb66-4ad4-9584-482841cac750/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 05:10:25,698 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_142851d4-eb66-4ad4-9584-482841cac750/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-29 05:10:25,699 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_142851d4-eb66-4ad4-9584-482841cac750/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (23)] Waiting until timeout for monitored process [2023-11-29 05:10:25,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:10:25,830 INFO L262 TraceCheckSpWp]: Trace formula consists of 199 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-29 05:10:25,832 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:10:26,057 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 29 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-11-29 05:10:26,057 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 05:10:26,203 INFO L349 Elim1Store]: treesize reduction 216, result has 4.0 percent of original size [2023-11-29 05:10:26,203 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 91 treesize of output 29 [2023-11-29 05:10:26,398 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 29 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-11-29 05:10:26,398 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 05:10:26,398 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1877554116] [2023-11-29 05:10:26,398 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1877554116] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 05:10:26,398 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 05:10:26,398 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 10 [2023-11-29 05:10:26,399 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1715308152] [2023-11-29 05:10:26,399 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 05:10:26,399 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-29 05:10:26,399 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 05:10:26,400 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-29 05:10:26,400 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2023-11-29 05:10:26,400 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 50 [2023-11-29 05:10:26,401 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 143 places, 125 transitions, 1008 flow. Second operand has 11 states, 11 states have (on average 26.818181818181817) internal successors, (295), 11 states have internal predecessors, (295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:10:26,401 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 05:10:26,401 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 50 [2023-11-29 05:10:26,401 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 05:10:30,602 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-29 05:10:35,163 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-29 05:10:37,648 INFO L124 PetriNetUnfolderBase]: 4865/9836 cut-off events. [2023-11-29 05:10:37,648 INFO L125 PetriNetUnfolderBase]: For 16917/16923 co-relation queries the response was YES. [2023-11-29 05:10:37,676 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26074 conditions, 9836 events. 4865/9836 cut-off events. For 16917/16923 co-relation queries the response was YES. Maximal size of possible extension queue 439. Compared 82420 event pairs, 484 based on Foata normal form. 36/8240 useless extension candidates. Maximal degree in co-relation 26025. Up to 1504 conditions per place. [2023-11-29 05:10:37,722 INFO L140 encePairwiseOnDemand]: 46/50 looper letters, 219 selfloop transitions, 55 changer transitions 36/321 dead transitions. [2023-11-29 05:10:37,722 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 156 places, 321 transitions, 2452 flow [2023-11-29 05:10:37,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-11-29 05:10:37,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2023-11-29 05:10:37,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 665 transitions. [2023-11-29 05:10:37,725 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7 [2023-11-29 05:10:37,725 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 665 transitions. [2023-11-29 05:10:37,725 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 665 transitions. [2023-11-29 05:10:37,725 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 05:10:37,726 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 665 transitions. [2023-11-29 05:10:37,727 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 35.0) internal successors, (665), 19 states have internal predecessors, (665), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:10:37,729 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 50.0) internal successors, (1000), 20 states have internal predecessors, (1000), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:10:37,729 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 50.0) internal successors, (1000), 20 states have internal predecessors, (1000), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:10:37,729 INFO L175 Difference]: Start difference. First operand has 143 places, 125 transitions, 1008 flow. Second operand 19 states and 665 transitions. [2023-11-29 05:10:37,729 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 156 places, 321 transitions, 2452 flow [2023-11-29 05:10:37,758 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 152 places, 321 transitions, 2334 flow, removed 56 selfloop flow, removed 4 redundant places. [2023-11-29 05:10:37,761 INFO L231 Difference]: Finished difference. Result has 161 places, 147 transitions, 1359 flow [2023-11-29 05:10:37,761 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=930, PETRI_DIFFERENCE_MINUEND_PLACES=134, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=124, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=91, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=1359, PETRI_PLACES=161, PETRI_TRANSITIONS=147} [2023-11-29 05:10:37,762 INFO L281 CegarLoopForPetriNet]: 49 programPoint places, 112 predicate places. [2023-11-29 05:10:37,762 INFO L495 AbstractCegarLoop]: Abstraction has has 161 places, 147 transitions, 1359 flow [2023-11-29 05:10:37,762 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 26.818181818181817) internal successors, (295), 11 states have internal predecessors, (295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:10:37,762 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 05:10:37,762 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:10:37,765 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_142851d4-eb66-4ad4-9584-482841cac750/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (23)] Ended with exit code 0 [2023-11-29 05:10:37,962 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_142851d4-eb66-4ad4-9584-482841cac750/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 05:10:37,963 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-11-29 05:10:37,963 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:10:37,963 INFO L85 PathProgramCache]: Analyzing trace with hash -371693502, now seen corresponding path program 8 times [2023-11-29 05:10:37,963 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 05:10:37,963 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [705222566] [2023-11-29 05:10:37,964 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 05:10:37,964 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 05:10:37,964 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_142851d4-eb66-4ad4-9584-482841cac750/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 05:10:37,965 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_142851d4-eb66-4ad4-9584-482841cac750/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-29 05:10:37,966 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_142851d4-eb66-4ad4-9584-482841cac750/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (24)] Waiting until timeout for monitored process [2023-11-29 05:10:38,121 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-29 05:10:38,122 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 05:10:38,128 INFO L262 TraceCheckSpWp]: Trace formula consists of 199 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-29 05:10:38,129 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:10:38,309 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-11-29 05:10:38,309 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 05:10:38,441 INFO L349 Elim1Store]: treesize reduction 210, result has 3.2 percent of original size [2023-11-29 05:10:38,441 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 90 treesize of output 27 [2023-11-29 05:10:38,602 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-11-29 05:10:38,602 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 05:10:38,603 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [705222566] [2023-11-29 05:10:38,603 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [705222566] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 05:10:38,603 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 05:10:38,603 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 9 [2023-11-29 05:10:38,603 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1845633243] [2023-11-29 05:10:38,603 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 05:10:38,603 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-29 05:10:38,603 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 05:10:38,604 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-29 05:10:38,604 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2023-11-29 05:10:38,604 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 50 [2023-11-29 05:10:38,604 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 161 places, 147 transitions, 1359 flow. Second operand has 10 states, 10 states have (on average 27.2) internal successors, (272), 10 states have internal predecessors, (272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:10:38,604 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 05:10:38,604 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 50 [2023-11-29 05:10:38,604 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 05:10:40,838 INFO L124 PetriNetUnfolderBase]: 4865/9778 cut-off events. [2023-11-29 05:10:40,838 INFO L125 PetriNetUnfolderBase]: For 20091/20097 co-relation queries the response was YES. [2023-11-29 05:10:40,867 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26011 conditions, 9778 events. 4865/9778 cut-off events. For 20091/20097 co-relation queries the response was YES. Maximal size of possible extension queue 432. Compared 81516 event pairs, 614 based on Foata normal form. 16/8162 useless extension candidates. Maximal degree in co-relation 25953. Up to 1504 conditions per place. [2023-11-29 05:10:40,883 INFO L140 encePairwiseOnDemand]: 46/50 looper letters, 144 selfloop transitions, 50 changer transitions 69/274 dead transitions. [2023-11-29 05:10:40,883 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 175 places, 274 transitions, 2193 flow [2023-11-29 05:10:40,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-29 05:10:40,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2023-11-29 05:10:40,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 518 transitions. [2023-11-29 05:10:40,885 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6906666666666667 [2023-11-29 05:10:40,885 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 518 transitions. [2023-11-29 05:10:40,885 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 518 transitions. [2023-11-29 05:10:40,886 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 05:10:40,886 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 518 transitions. [2023-11-29 05:10:40,887 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 34.53333333333333) internal successors, (518), 15 states have internal predecessors, (518), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:10:40,888 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 50.0) internal successors, (800), 16 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:10:40,888 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 50.0) internal successors, (800), 16 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:10:40,888 INFO L175 Difference]: Start difference. First operand has 161 places, 147 transitions, 1359 flow. Second operand 15 states and 518 transitions. [2023-11-29 05:10:40,888 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 175 places, 274 transitions, 2193 flow [2023-11-29 05:10:40,945 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 169 places, 274 transitions, 2029 flow, removed 36 selfloop flow, removed 6 redundant places. [2023-11-29 05:10:40,949 INFO L231 Difference]: Finished difference. Result has 176 places, 148 transitions, 1381 flow [2023-11-29 05:10:40,950 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=1197, PETRI_DIFFERENCE_MINUEND_PLACES=155, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=147, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=98, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=1381, PETRI_PLACES=176, PETRI_TRANSITIONS=148} [2023-11-29 05:10:40,950 INFO L281 CegarLoopForPetriNet]: 49 programPoint places, 127 predicate places. [2023-11-29 05:10:40,950 INFO L495 AbstractCegarLoop]: Abstraction has has 176 places, 148 transitions, 1381 flow [2023-11-29 05:10:40,950 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 27.2) internal successors, (272), 10 states have internal predecessors, (272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:10:40,950 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 05:10:40,950 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:10:40,954 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_142851d4-eb66-4ad4-9584-482841cac750/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (24)] Ended with exit code 0 [2023-11-29 05:10:41,151 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_142851d4-eb66-4ad4-9584-482841cac750/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 05:10:41,151 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-11-29 05:10:41,151 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:10:41,151 INFO L85 PathProgramCache]: Analyzing trace with hash 701190092, now seen corresponding path program 9 times [2023-11-29 05:10:41,152 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 05:10:41,152 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [529810314] [2023-11-29 05:10:41,152 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-29 05:10:41,152 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 05:10:41,152 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_142851d4-eb66-4ad4-9584-482841cac750/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 05:10:41,153 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_142851d4-eb66-4ad4-9584-482841cac750/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-29 05:10:41,154 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_142851d4-eb66-4ad4-9584-482841cac750/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (25)] Waiting until timeout for monitored process [2023-11-29 05:10:41,382 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2023-11-29 05:10:41,382 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 05:10:41,390 INFO L262 TraceCheckSpWp]: Trace formula consists of 199 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-29 05:10:41,392 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:10:41,697 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-11-29 05:10:41,697 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 05:10:41,871 INFO L349 Elim1Store]: treesize reduction 216, result has 4.0 percent of original size [2023-11-29 05:10:41,872 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 91 treesize of output 29 [2023-11-29 05:10:42,094 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-11-29 05:10:42,094 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 05:10:42,094 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [529810314] [2023-11-29 05:10:42,094 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [529810314] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 05:10:42,095 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 05:10:42,095 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 11 [2023-11-29 05:10:42,095 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1027439091] [2023-11-29 05:10:42,095 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 05:10:42,095 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-29 05:10:42,096 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 05:10:42,096 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-29 05:10:42,096 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2023-11-29 05:10:42,097 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 50 [2023-11-29 05:10:42,097 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 176 places, 148 transitions, 1381 flow. Second operand has 12 states, 12 states have (on average 26.5) internal successors, (318), 12 states have internal predecessors, (318), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:10:42,097 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 05:10:42,097 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 50 [2023-11-29 05:10:42,097 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 05:10:46,369 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-29 05:10:50,529 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-29 05:10:55,201 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-29 05:10:59,337 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-29 05:11:01,397 INFO L124 PetriNetUnfolderBase]: 4969/9970 cut-off events. [2023-11-29 05:11:01,397 INFO L125 PetriNetUnfolderBase]: For 19019/19021 co-relation queries the response was YES. [2023-11-29 05:11:01,430 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26660 conditions, 9970 events. 4969/9970 cut-off events. For 19019/19021 co-relation queries the response was YES. Maximal size of possible extension queue 456. Compared 83120 event pairs, 546 based on Foata normal form. 2/8310 useless extension candidates. Maximal degree in co-relation 26595. Up to 1760 conditions per place. [2023-11-29 05:11:01,444 INFO L140 encePairwiseOnDemand]: 46/50 looper letters, 140 selfloop transitions, 57 changer transitions 51/259 dead transitions. [2023-11-29 05:11:01,445 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 188 places, 259 transitions, 2166 flow [2023-11-29 05:11:01,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-29 05:11:01,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-11-29 05:11:01,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 444 transitions. [2023-11-29 05:11:01,447 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.683076923076923 [2023-11-29 05:11:01,447 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 444 transitions. [2023-11-29 05:11:01,447 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 444 transitions. [2023-11-29 05:11:01,447 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 05:11:01,447 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 444 transitions. [2023-11-29 05:11:01,448 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 34.15384615384615) internal successors, (444), 13 states have internal predecessors, (444), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:11:01,449 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 50.0) internal successors, (700), 14 states have internal predecessors, (700), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:11:01,449 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 50.0) internal successors, (700), 14 states have internal predecessors, (700), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:11:01,449 INFO L175 Difference]: Start difference. First operand has 176 places, 148 transitions, 1381 flow. Second operand 13 states and 444 transitions. [2023-11-29 05:11:01,449 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 188 places, 259 transitions, 2166 flow [2023-11-29 05:11:01,514 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 177 places, 259 transitions, 2056 flow, removed 11 selfloop flow, removed 11 redundant places. [2023-11-29 05:11:01,517 INFO L231 Difference]: Finished difference. Result has 178 places, 149 transitions, 1406 flow [2023-11-29 05:11:01,517 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=1271, PETRI_DIFFERENCE_MINUEND_PLACES=165, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=148, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=56, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=91, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=1406, PETRI_PLACES=178, PETRI_TRANSITIONS=149} [2023-11-29 05:11:01,518 INFO L281 CegarLoopForPetriNet]: 49 programPoint places, 129 predicate places. [2023-11-29 05:11:01,518 INFO L495 AbstractCegarLoop]: Abstraction has has 178 places, 149 transitions, 1406 flow [2023-11-29 05:11:01,518 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 26.5) internal successors, (318), 12 states have internal predecessors, (318), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:11:01,518 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 05:11:01,518 INFO L208 CegarLoopForPetriNet]: trace histogram [23, 22, 1, 1] [2023-11-29 05:11:01,522 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_142851d4-eb66-4ad4-9584-482841cac750/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (25)] Ended with exit code 0 [2023-11-29 05:11:01,718 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_142851d4-eb66-4ad4-9584-482841cac750/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 05:11:01,719 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-11-29 05:11:01,719 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:11:01,719 INFO L85 PathProgramCache]: Analyzing trace with hash 1547708851, now seen corresponding path program 4 times [2023-11-29 05:11:01,719 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 05:11:01,719 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2084398252] [2023-11-29 05:11:01,720 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-11-29 05:11:01,720 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 05:11:01,720 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_142851d4-eb66-4ad4-9584-482841cac750/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 05:11:01,721 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_142851d4-eb66-4ad4-9584-482841cac750/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-29 05:11:01,722 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_142851d4-eb66-4ad4-9584-482841cac750/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (26)] Waiting until timeout for monitored process [2023-11-29 05:11:01,892 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-11-29 05:11:01,892 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 05:11:01,902 INFO L262 TraceCheckSpWp]: Trace formula consists of 306 conjuncts, 32 conjunts are in the unsatisfiable core [2023-11-29 05:11:01,904 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:11:01,918 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 7 [2023-11-29 05:11:01,927 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 05:11:01,927 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-29 05:11:01,945 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 05:11:01,946 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1 [2023-11-29 05:11:01,954 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 05:11:01,955 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-29 05:11:01,964 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 05:11:01,965 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-29 05:11:01,970 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 05:11:01,971 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-29 05:11:03,520 INFO L134 CoverageAnalysis]: Checked inductivity of 506 backedges. 0 proven. 506 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 05:11:03,520 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 05:11:15,542 INFO L134 CoverageAnalysis]: Checked inductivity of 506 backedges. 0 proven. 506 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 05:11:15,542 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 05:11:15,542 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2084398252] [2023-11-29 05:11:15,542 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2084398252] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 05:11:15,542 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 05:11:15,542 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24] total 48 [2023-11-29 05:11:15,543 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1838570883] [2023-11-29 05:11:15,543 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 05:11:15,543 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 50 states [2023-11-29 05:11:15,543 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 05:11:15,544 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2023-11-29 05:11:15,545 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=629, Invalid=1821, Unknown=0, NotChecked=0, Total=2450 [2023-11-29 05:11:49,063 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 50 [2023-11-29 05:11:49,064 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 178 places, 149 transitions, 1406 flow. Second operand has 50 states, 50 states have (on average 23.88) internal successors, (1194), 50 states have internal predecessors, (1194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:11:49,064 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 05:11:49,064 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 50 [2023-11-29 05:11:49,064 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 05:12:18,137 WARN L293 SmtUtils]: Spent 17.91s on a formula simplification that was a NOOP. DAG size: 254 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-11-29 05:13:04,672 WARN L293 SmtUtils]: Spent 45.28s on a formula simplification. DAG size of input: 250 DAG size of output: 249 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-11-29 05:13:28,929 WARN L293 SmtUtils]: Spent 22.31s on a formula simplification that was a NOOP. DAG size: 243 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-11-29 05:14:13,720 WARN L293 SmtUtils]: Spent 43.28s on a formula simplification. DAG size of input: 239 DAG size of output: 238 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-11-29 05:14:29,702 WARN L293 SmtUtils]: Spent 14.22s on a formula simplification that was a NOOP. DAG size: 232 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-11-29 05:15:05,603 WARN L293 SmtUtils]: Spent 34.33s on a formula simplification. DAG size of input: 228 DAG size of output: 227 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-11-29 05:15:27,866 WARN L293 SmtUtils]: Spent 20.66s on a formula simplification that was a NOOP. DAG size: 222 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-11-29 05:16:03,327 WARN L293 SmtUtils]: Spent 33.75s on a formula simplification. DAG size of input: 218 DAG size of output: 217 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-11-29 05:16:14,099 WARN L293 SmtUtils]: Spent 9.19s on a formula simplification that was a NOOP. DAG size: 211 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-11-29 05:16:41,414 WARN L293 SmtUtils]: Spent 25.70s on a formula simplification. DAG size of input: 207 DAG size of output: 206 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-11-29 05:16:54,301 WARN L293 SmtUtils]: Spent 11.38s on a formula simplification that was a NOOP. DAG size: 200 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-11-29 05:17:17,466 WARN L293 SmtUtils]: Spent 21.51s on a formula simplification. DAG size of input: 196 DAG size of output: 195 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-11-29 05:17:28,321 WARN L293 SmtUtils]: Spent 9.48s on a formula simplification that was a NOOP. DAG size: 189 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-11-29 05:17:50,092 WARN L293 SmtUtils]: Spent 19.99s on a formula simplification. DAG size of input: 185 DAG size of output: 184 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-11-29 05:17:58,625 WARN L293 SmtUtils]: Spent 7.03s on a formula simplification that was a NOOP. DAG size: 179 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-11-29 05:18:18,965 WARN L293 SmtUtils]: Spent 18.59s on a formula simplification. DAG size of input: 175 DAG size of output: 174 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-11-29 05:18:28,838 WARN L293 SmtUtils]: Spent 8.37s on a formula simplification that was a NOOP. DAG size: 168 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-11-29 05:18:43,790 WARN L293 SmtUtils]: Spent 13.28s on a formula simplification. DAG size of input: 164 DAG size of output: 163 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-11-29 05:18:51,282 WARN L293 SmtUtils]: Spent 6.06s on a formula simplification that was a NOOP. DAG size: 157 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-11-29 05:19:05,623 WARN L293 SmtUtils]: Spent 12.71s on a formula simplification. DAG size of input: 153 DAG size of output: 152 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-11-29 05:19:20,620 WARN L293 SmtUtils]: Spent 7.52s on a formula simplification. DAG size of input: 142 DAG size of output: 141 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-11-29 05:19:35,368 WARN L293 SmtUtils]: Spent 6.84s on a formula simplification. DAG size of input: 132 DAG size of output: 131 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-11-29 05:20:22,337 INFO L124 PetriNetUnfolderBase]: 4993/10026 cut-off events. [2023-11-29 05:20:22,337 INFO L125 PetriNetUnfolderBase]: For 24573/24577 co-relation queries the response was YES. [2023-11-29 05:20:22,374 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27072 conditions, 10026 events. 4993/10026 cut-off events. For 24573/24577 co-relation queries the response was YES. Maximal size of possible extension queue 454. Compared 84597 event pairs, 4212 based on Foata normal form. 24/8386 useless extension candidates. Maximal degree in co-relation 27008. Up to 8617 conditions per place. [2023-11-29 05:20:22,388 INFO L140 encePairwiseOnDemand]: 45/50 looper letters, 75 selfloop transitions, 136 changer transitions 0/221 dead transitions. [2023-11-29 05:20:22,389 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 271 places, 221 transitions, 2356 flow [2023-11-29 05:20:22,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 94 states. [2023-11-29 05:20:22,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 94 states. [2023-11-29 05:20:22,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 2247 transitions. [2023-11-29 05:20:22,396 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47808510638297874 [2023-11-29 05:20:22,396 INFO L72 ComplementDD]: Start complementDD. Operand 94 states and 2247 transitions. [2023-11-29 05:20:22,396 INFO L73 IsDeterministic]: Start isDeterministic. Operand 94 states and 2247 transitions. [2023-11-29 05:20:22,398 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 05:20:22,398 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 94 states and 2247 transitions. [2023-11-29 05:20:22,403 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 95 states, 94 states have (on average 23.904255319148938) internal successors, (2247), 94 states have internal predecessors, (2247), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:20:22,411 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 95 states, 95 states have (on average 50.0) internal successors, (4750), 95 states have internal predecessors, (4750), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:20:22,413 INFO L81 ComplementDD]: Finished complementDD. Result has 95 states, 95 states have (on average 50.0) internal successors, (4750), 95 states have internal predecessors, (4750), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:20:22,413 INFO L175 Difference]: Start difference. First operand has 178 places, 149 transitions, 1406 flow. Second operand 94 states and 2247 transitions. [2023-11-29 05:20:22,413 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 271 places, 221 transitions, 2356 flow [2023-11-29 05:20:22,491 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 257 places, 221 transitions, 2212 flow, removed 4 selfloop flow, removed 14 redundant places. [2023-11-29 05:20:22,496 INFO L231 Difference]: Finished difference. Result has 281 places, 221 transitions, 2164 flow [2023-11-29 05:20:22,496 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=1262, PETRI_DIFFERENCE_MINUEND_PLACES=164, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=149, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=67, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=94, PETRI_FLOW=2164, PETRI_PLACES=281, PETRI_TRANSITIONS=221} [2023-11-29 05:20:22,497 INFO L281 CegarLoopForPetriNet]: 49 programPoint places, 232 predicate places. [2023-11-29 05:20:22,497 INFO L495 AbstractCegarLoop]: Abstraction has has 281 places, 221 transitions, 2164 flow [2023-11-29 05:20:22,498 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 50 states, 50 states have (on average 23.88) internal successors, (1194), 50 states have internal predecessors, (1194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:20:22,498 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 05:20:22,498 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 4, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:20:22,503 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_142851d4-eb66-4ad4-9584-482841cac750/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (26)] Ended with exit code 0 [2023-11-29 05:20:22,698 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_142851d4-eb66-4ad4-9584-482841cac750/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 05:20:22,698 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-11-29 05:20:22,699 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:20:22,699 INFO L85 PathProgramCache]: Analyzing trace with hash 52826467, now seen corresponding path program 10 times [2023-11-29 05:20:22,699 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 05:20:22,699 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2137279311] [2023-11-29 05:20:22,699 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-11-29 05:20:22,699 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 05:20:22,699 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_142851d4-eb66-4ad4-9584-482841cac750/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 05:20:22,700 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_142851d4-eb66-4ad4-9584-482841cac750/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-29 05:20:22,701 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_142851d4-eb66-4ad4-9584-482841cac750/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (27)] Waiting until timeout for monitored process [2023-11-29 05:20:22,872 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-11-29 05:20:22,872 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 05:20:22,880 INFO L262 TraceCheckSpWp]: Trace formula consists of 208 conjuncts, 20 conjunts are in the unsatisfiable core [2023-11-29 05:20:22,881 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:20:24,119 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 10 proven. 40 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 05:20:24,119 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 05:20:27,017 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 15 proven. 35 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 05:20:27,018 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 05:20:27,018 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2137279311] [2023-11-29 05:20:27,018 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2137279311] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 05:20:27,018 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 05:20:27,018 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 23 [2023-11-29 05:20:27,018 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1704093606] [2023-11-29 05:20:27,018 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 05:20:27,019 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-11-29 05:20:27,019 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 05:20:27,020 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-11-29 05:20:27,020 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=169, Invalid=383, Unknown=0, NotChecked=0, Total=552 [2023-11-29 05:20:27,216 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 50 [2023-11-29 05:20:27,217 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 281 places, 221 transitions, 2164 flow. Second operand has 24 states, 24 states have (on average 25.583333333333332) internal successors, (614), 24 states have internal predecessors, (614), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:20:27,217 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 05:20:27,217 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 50 [2023-11-29 05:20:27,217 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 05:20:36,558 INFO L124 PetriNetUnfolderBase]: 6848/13850 cut-off events. [2023-11-29 05:20:36,558 INFO L125 PetriNetUnfolderBase]: For 21475/21482 co-relation queries the response was YES. [2023-11-29 05:20:36,628 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35523 conditions, 13850 events. 6848/13850 cut-off events. For 21475/21482 co-relation queries the response was YES. Maximal size of possible extension queue 593. Compared 121753 event pairs, 1078 based on Foata normal form. 181/11703 useless extension candidates. Maximal degree in co-relation 35435. Up to 2160 conditions per place. [2023-11-29 05:20:36,645 INFO L140 encePairwiseOnDemand]: 45/50 looper letters, 245 selfloop transitions, 87 changer transitions 128/471 dead transitions. [2023-11-29 05:20:36,645 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 300 places, 471 transitions, 4896 flow [2023-11-29 05:20:36,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-11-29 05:20:36,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2023-11-29 05:20:36,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 665 transitions. [2023-11-29 05:20:36,648 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.665 [2023-11-29 05:20:36,648 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 665 transitions. [2023-11-29 05:20:36,648 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 665 transitions. [2023-11-29 05:20:36,648 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 05:20:36,648 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 665 transitions. [2023-11-29 05:20:36,650 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 33.25) internal successors, (665), 20 states have internal predecessors, (665), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:20:36,652 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 50.0) internal successors, (1050), 21 states have internal predecessors, (1050), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:20:36,652 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 50.0) internal successors, (1050), 21 states have internal predecessors, (1050), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:20:36,652 INFO L175 Difference]: Start difference. First operand has 281 places, 221 transitions, 2164 flow. Second operand 20 states and 665 transitions. [2023-11-29 05:20:36,652 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 300 places, 471 transitions, 4896 flow [2023-11-29 05:20:36,761 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 255 places, 471 transitions, 4570 flow, removed 99 selfloop flow, removed 45 redundant places. [2023-11-29 05:20:36,766 INFO L231 Difference]: Finished difference. Result has 257 places, 265 transitions, 2665 flow [2023-11-29 05:20:36,767 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=1838, PETRI_DIFFERENCE_MINUEND_PLACES=236, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=221, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=52, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=158, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=2665, PETRI_PLACES=257, PETRI_TRANSITIONS=265} [2023-11-29 05:20:36,767 INFO L281 CegarLoopForPetriNet]: 49 programPoint places, 208 predicate places. [2023-11-29 05:20:36,767 INFO L495 AbstractCegarLoop]: Abstraction has has 257 places, 265 transitions, 2665 flow [2023-11-29 05:20:36,767 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 25.583333333333332) internal successors, (614), 24 states have internal predecessors, (614), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:20:36,767 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 05:20:36,767 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:20:36,771 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_142851d4-eb66-4ad4-9584-482841cac750/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (27)] Ended with exit code 0 [2023-11-29 05:20:36,968 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_142851d4-eb66-4ad4-9584-482841cac750/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 05:20:36,968 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-11-29 05:20:36,968 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:20:36,968 INFO L85 PathProgramCache]: Analyzing trace with hash 70687740, now seen corresponding path program 11 times [2023-11-29 05:20:36,969 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 05:20:36,969 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1724513843] [2023-11-29 05:20:36,969 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-11-29 05:20:36,969 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 05:20:36,969 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_142851d4-eb66-4ad4-9584-482841cac750/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 05:20:36,970 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_142851d4-eb66-4ad4-9584-482841cac750/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-29 05:20:36,971 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_142851d4-eb66-4ad4-9584-482841cac750/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (28)] Waiting until timeout for monitored process [2023-11-29 05:20:37,249 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2023-11-29 05:20:37,249 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 05:20:37,258 INFO L262 TraceCheckSpWp]: Trace formula consists of 229 conjuncts, 10 conjunts are in the unsatisfiable core [2023-11-29 05:20:37,260 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:20:37,637 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 0 proven. 51 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2023-11-29 05:20:37,637 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 05:20:37,847 INFO L349 Elim1Store]: treesize reduction 216, result has 4.0 percent of original size [2023-11-29 05:20:37,848 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 91 treesize of output 29 [2023-11-29 05:20:38,223 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 0 proven. 51 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2023-11-29 05:20:38,224 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 05:20:38,224 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1724513843] [2023-11-29 05:20:38,224 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1724513843] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 05:20:38,224 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 05:20:38,224 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 13 [2023-11-29 05:20:38,224 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [958394038] [2023-11-29 05:20:38,224 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 05:20:38,225 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-11-29 05:20:38,225 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 05:20:38,225 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-11-29 05:20:38,225 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2023-11-29 05:20:38,226 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 50 [2023-11-29 05:20:38,226 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 257 places, 265 transitions, 2665 flow. Second operand has 14 states, 14 states have (on average 26.428571428571427) internal successors, (370), 14 states have internal predecessors, (370), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:20:38,226 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 05:20:38,226 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 50 [2023-11-29 05:20:38,226 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 05:20:42,531 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-29 05:20:46,724 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-29 05:20:51,569 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-29 05:20:55,815 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-29 05:21:01,119 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-29 05:21:07,404 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-29 05:21:12,239 INFO L124 PetriNetUnfolderBase]: 7898/15810 cut-off events. [2023-11-29 05:21:12,239 INFO L125 PetriNetUnfolderBase]: For 47950/47953 co-relation queries the response was YES. [2023-11-29 05:21:12,307 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44663 conditions, 15810 events. 7898/15810 cut-off events. For 47950/47953 co-relation queries the response was YES. Maximal size of possible extension queue 651. Compared 139838 event pairs, 683 based on Foata normal form. 30/13237 useless extension candidates. Maximal degree in co-relation 44573. Up to 2432 conditions per place. [2023-11-29 05:21:12,331 INFO L140 encePairwiseOnDemand]: 46/50 looper letters, 457 selfloop transitions, 184 changer transitions 69/721 dead transitions. [2023-11-29 05:21:12,331 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 287 places, 721 transitions, 7016 flow [2023-11-29 05:21:12,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2023-11-29 05:21:12,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2023-11-29 05:21:12,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 1367 transitions. [2023-11-29 05:21:12,334 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.701025641025641 [2023-11-29 05:21:12,334 INFO L72 ComplementDD]: Start complementDD. Operand 39 states and 1367 transitions. [2023-11-29 05:21:12,334 INFO L73 IsDeterministic]: Start isDeterministic. Operand 39 states and 1367 transitions. [2023-11-29 05:21:12,334 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 05:21:12,334 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 39 states and 1367 transitions. [2023-11-29 05:21:12,336 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 40 states, 39 states have (on average 35.05128205128205) internal successors, (1367), 39 states have internal predecessors, (1367), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:21:12,338 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 40 states, 40 states have (on average 50.0) internal successors, (2000), 40 states have internal predecessors, (2000), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:21:12,339 INFO L81 ComplementDD]: Finished complementDD. Result has 40 states, 40 states have (on average 50.0) internal successors, (2000), 40 states have internal predecessors, (2000), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:21:12,339 INFO L175 Difference]: Start difference. First operand has 257 places, 265 transitions, 2665 flow. Second operand 39 states and 1367 transitions. [2023-11-29 05:21:12,339 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 287 places, 721 transitions, 7016 flow [2023-11-29 05:21:12,473 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 282 places, 721 transitions, 6590 flow, removed 209 selfloop flow, removed 5 redundant places. [2023-11-29 05:21:12,480 INFO L231 Difference]: Finished difference. Result has 301 places, 347 transitions, 3962 flow [2023-11-29 05:21:12,480 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=2449, PETRI_DIFFERENCE_MINUEND_PLACES=244, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=264, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=102, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=162, PETRI_DIFFERENCE_SUBTRAHEND_STATES=39, PETRI_FLOW=3962, PETRI_PLACES=301, PETRI_TRANSITIONS=347} [2023-11-29 05:21:12,481 INFO L281 CegarLoopForPetriNet]: 49 programPoint places, 252 predicate places. [2023-11-29 05:21:12,481 INFO L495 AbstractCegarLoop]: Abstraction has has 301 places, 347 transitions, 3962 flow [2023-11-29 05:21:12,481 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 26.428571428571427) internal successors, (370), 14 states have internal predecessors, (370), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:21:12,481 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 05:21:12,481 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:21:12,485 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_142851d4-eb66-4ad4-9584-482841cac750/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (28)] Ended with exit code 0 [2023-11-29 05:21:12,681 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_142851d4-eb66-4ad4-9584-482841cac750/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 05:21:12,681 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-11-29 05:21:12,681 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:21:12,682 INFO L85 PathProgramCache]: Analyzing trace with hash -1614802692, now seen corresponding path program 12 times [2023-11-29 05:21:12,682 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 05:21:12,682 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2068639270] [2023-11-29 05:21:12,682 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-11-29 05:21:12,682 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 05:21:12,682 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_142851d4-eb66-4ad4-9584-482841cac750/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 05:21:12,683 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_142851d4-eb66-4ad4-9584-482841cac750/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-29 05:21:12,684 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_142851d4-eb66-4ad4-9584-482841cac750/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (29)] Waiting until timeout for monitored process [2023-11-29 05:21:13,017 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2023-11-29 05:21:13,017 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 05:21:13,025 INFO L262 TraceCheckSpWp]: Trace formula consists of 229 conjuncts, 10 conjunts are in the unsatisfiable core [2023-11-29 05:21:13,027 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:21:13,272 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 0 proven. 47 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2023-11-29 05:21:13,272 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 05:21:13,395 INFO L349 Elim1Store]: treesize reduction 210, result has 3.2 percent of original size [2023-11-29 05:21:13,396 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 90 treesize of output 27 [2023-11-29 05:21:13,649 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 0 proven. 47 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2023-11-29 05:21:13,649 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 05:21:13,649 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2068639270] [2023-11-29 05:21:13,649 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2068639270] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 05:21:13,649 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 05:21:13,649 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 11 [2023-11-29 05:21:13,650 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1416672627] [2023-11-29 05:21:13,650 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 05:21:13,650 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-29 05:21:13,650 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 05:21:13,651 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-29 05:21:13,651 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2023-11-29 05:21:13,651 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 50 [2023-11-29 05:21:13,652 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 301 places, 347 transitions, 3962 flow. Second operand has 12 states, 12 states have (on average 27.166666666666668) internal successors, (326), 12 states have internal predecessors, (326), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:21:13,652 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 05:21:13,652 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 50 [2023-11-29 05:21:13,652 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 05:21:19,243 INFO L124 PetriNetUnfolderBase]: 8981/17968 cut-off events. [2023-11-29 05:21:19,244 INFO L125 PetriNetUnfolderBase]: For 78052/78056 co-relation queries the response was YES. [2023-11-29 05:21:19,445 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51192 conditions, 17968 events. 8981/17968 cut-off events. For 78052/78056 co-relation queries the response was YES. Maximal size of possible extension queue 719. Compared 162212 event pairs, 1044 based on Foata normal form. 13/15020 useless extension candidates. Maximal degree in co-relation 51083. Up to 3659 conditions per place. [2023-11-29 05:21:19,485 INFO L140 encePairwiseOnDemand]: 46/50 looper letters, 328 selfloop transitions, 181 changer transitions 33/553 dead transitions. [2023-11-29 05:21:19,485 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 319 places, 553 transitions, 6574 flow [2023-11-29 05:21:19,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-11-29 05:21:19,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2023-11-29 05:21:19,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 666 transitions. [2023-11-29 05:21:19,488 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7010526315789474 [2023-11-29 05:21:19,488 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 666 transitions. [2023-11-29 05:21:19,488 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 666 transitions. [2023-11-29 05:21:19,488 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 05:21:19,489 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 666 transitions. [2023-11-29 05:21:19,490 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 35.05263157894737) internal successors, (666), 19 states have internal predecessors, (666), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:21:19,491 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 50.0) internal successors, (1000), 20 states have internal predecessors, (1000), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:21:19,491 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 50.0) internal successors, (1000), 20 states have internal predecessors, (1000), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:21:19,491 INFO L175 Difference]: Start difference. First operand has 301 places, 347 transitions, 3962 flow. Second operand 19 states and 666 transitions. [2023-11-29 05:21:19,492 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 319 places, 553 transitions, 6574 flow [2023-11-29 05:21:19,879 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 317 places, 553 transitions, 6262 flow, removed 85 selfloop flow, removed 2 redundant places. [2023-11-29 05:21:19,888 INFO L231 Difference]: Finished difference. Result has 327 places, 381 transitions, 4646 flow [2023-11-29 05:21:19,889 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=3690, PETRI_DIFFERENCE_MINUEND_PLACES=299, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=347, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=148, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=195, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=4646, PETRI_PLACES=327, PETRI_TRANSITIONS=381} [2023-11-29 05:21:19,889 INFO L281 CegarLoopForPetriNet]: 49 programPoint places, 278 predicate places. [2023-11-29 05:21:19,889 INFO L495 AbstractCegarLoop]: Abstraction has has 327 places, 381 transitions, 4646 flow [2023-11-29 05:21:19,889 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 27.166666666666668) internal successors, (326), 12 states have internal predecessors, (326), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:21:19,890 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 05:21:19,890 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:21:19,896 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_142851d4-eb66-4ad4-9584-482841cac750/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (29)] Ended with exit code 0 [2023-11-29 05:21:20,090 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_142851d4-eb66-4ad4-9584-482841cac750/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 05:21:20,090 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-11-29 05:21:20,091 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:21:20,091 INFO L85 PathProgramCache]: Analyzing trace with hash 1844081860, now seen corresponding path program 13 times [2023-11-29 05:21:20,091 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 05:21:20,091 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1736114568] [2023-11-29 05:21:20,091 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-11-29 05:21:20,091 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 05:21:20,092 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_142851d4-eb66-4ad4-9584-482841cac750/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 05:21:20,092 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_142851d4-eb66-4ad4-9584-482841cac750/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-29 05:21:20,093 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_142851d4-eb66-4ad4-9584-482841cac750/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (30)] Waiting until timeout for monitored process [2023-11-29 05:21:20,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:21:20,286 INFO L262 TraceCheckSpWp]: Trace formula consists of 229 conjuncts, 10 conjunts are in the unsatisfiable core [2023-11-29 05:21:20,288 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:21:20,814 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 0 proven. 52 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-11-29 05:21:20,814 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 05:21:21,041 INFO L349 Elim1Store]: treesize reduction 216, result has 4.0 percent of original size [2023-11-29 05:21:21,041 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 91 treesize of output 29 [2023-11-29 05:21:21,451 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 0 proven. 52 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-11-29 05:21:21,452 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 05:21:21,452 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1736114568] [2023-11-29 05:21:21,452 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1736114568] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 05:21:21,452 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 05:21:21,452 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 14 [2023-11-29 05:21:21,452 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1504845452] [2023-11-29 05:21:21,452 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 05:21:21,452 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-11-29 05:21:21,453 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 05:21:21,453 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-11-29 05:21:21,453 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=179, Unknown=0, NotChecked=0, Total=210 [2023-11-29 05:21:21,454 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 50 [2023-11-29 05:21:21,454 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 327 places, 381 transitions, 4646 flow. Second operand has 15 states, 15 states have (on average 26.2) internal successors, (393), 15 states have internal predecessors, (393), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:21:21,454 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 05:21:21,454 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 50 [2023-11-29 05:21:21,454 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 05:21:25,859 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-29 05:21:30,078 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-29 05:21:34,372 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-29 05:21:38,945 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-29 05:21:43,375 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-29 05:21:47,527 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-29 05:21:52,764 INFO L124 PetriNetUnfolderBase]: 9033/18078 cut-off events. [2023-11-29 05:21:52,765 INFO L125 PetriNetUnfolderBase]: For 85441/85442 co-relation queries the response was YES. [2023-11-29 05:21:53,102 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52928 conditions, 18078 events. 9033/18078 cut-off events. For 85441/85442 co-relation queries the response was YES. Maximal size of possible extension queue 746. Compared 163202 event pairs, 1029 based on Foata normal form. 1/15104 useless extension candidates. Maximal degree in co-relation 52808. Up to 3276 conditions per place. [2023-11-29 05:21:53,146 INFO L140 encePairwiseOnDemand]: 46/50 looper letters, 266 selfloop transitions, 219 changer transitions 33/529 dead transitions. [2023-11-29 05:21:53,146 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 342 places, 529 transitions, 6774 flow [2023-11-29 05:21:53,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-11-29 05:21:53,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2023-11-29 05:21:53,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 555 transitions. [2023-11-29 05:21:53,149 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.69375 [2023-11-29 05:21:53,149 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 555 transitions. [2023-11-29 05:21:53,149 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 555 transitions. [2023-11-29 05:21:53,149 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 05:21:53,149 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 555 transitions. [2023-11-29 05:21:53,150 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 34.6875) internal successors, (555), 16 states have internal predecessors, (555), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:21:53,151 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 50.0) internal successors, (850), 17 states have internal predecessors, (850), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:21:53,151 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 50.0) internal successors, (850), 17 states have internal predecessors, (850), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:21:53,151 INFO L175 Difference]: Start difference. First operand has 327 places, 381 transitions, 4646 flow. Second operand 16 states and 555 transitions. [2023-11-29 05:21:53,152 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 342 places, 529 transitions, 6774 flow [2023-11-29 05:21:53,729 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 337 places, 529 transitions, 6584 flow, removed 73 selfloop flow, removed 5 redundant places. [2023-11-29 05:21:53,737 INFO L231 Difference]: Finished difference. Result has 338 places, 382 transitions, 4989 flow [2023-11-29 05:21:53,738 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=4526, PETRI_DIFFERENCE_MINUEND_PLACES=322, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=381, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=218, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=162, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=4989, PETRI_PLACES=338, PETRI_TRANSITIONS=382} [2023-11-29 05:21:53,738 INFO L281 CegarLoopForPetriNet]: 49 programPoint places, 289 predicate places. [2023-11-29 05:21:53,738 INFO L495 AbstractCegarLoop]: Abstraction has has 338 places, 382 transitions, 4989 flow [2023-11-29 05:21:53,739 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 26.2) internal successors, (393), 15 states have internal predecessors, (393), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:21:53,739 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 05:21:53,739 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:21:53,743 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_142851d4-eb66-4ad4-9584-482841cac750/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (30)] Ended with exit code 0 [2023-11-29 05:21:53,939 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_142851d4-eb66-4ad4-9584-482841cac750/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 05:21:53,939 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-11-29 05:21:53,940 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:21:53,940 INFO L85 PathProgramCache]: Analyzing trace with hash -1205350880, now seen corresponding path program 14 times [2023-11-29 05:21:53,940 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 05:21:53,940 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [503493907] [2023-11-29 05:21:53,940 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 05:21:53,940 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 05:21:53,941 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_142851d4-eb66-4ad4-9584-482841cac750/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 05:21:53,941 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_142851d4-eb66-4ad4-9584-482841cac750/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-29 05:21:53,942 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_142851d4-eb66-4ad4-9584-482841cac750/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (31)] Waiting until timeout for monitored process [2023-11-29 05:21:54,111 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-29 05:21:54,111 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 05:21:54,119 INFO L262 TraceCheckSpWp]: Trace formula consists of 229 conjuncts, 10 conjunts are in the unsatisfiable core [2023-11-29 05:21:54,121 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:21:54,424 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 0 proven. 51 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2023-11-29 05:21:54,424 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 05:21:54,557 INFO L349 Elim1Store]: treesize reduction 216, result has 4.0 percent of original size [2023-11-29 05:21:54,558 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 91 treesize of output 29 [2023-11-29 05:21:54,881 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 0 proven. 51 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2023-11-29 05:21:54,881 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 05:21:54,881 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [503493907] [2023-11-29 05:21:54,881 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [503493907] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 05:21:54,882 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 05:21:54,882 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 12 [2023-11-29 05:21:54,882 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1453705381] [2023-11-29 05:21:54,882 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 05:21:54,882 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-11-29 05:21:54,883 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 05:21:54,883 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-11-29 05:21:54,883 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2023-11-29 05:21:54,884 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 50 [2023-11-29 05:21:54,884 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 338 places, 382 transitions, 4989 flow. Second operand has 13 states, 13 states have (on average 27.0) internal successors, (351), 13 states have internal predecessors, (351), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:21:54,884 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 05:21:54,884 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 50 [2023-11-29 05:21:54,884 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 05:21:59,136 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-29 05:22:03,966 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-29 05:22:11,285 INFO L124 PetriNetUnfolderBase]: 9033/18015 cut-off events. [2023-11-29 05:22:11,285 INFO L125 PetriNetUnfolderBase]: For 88527/88532 co-relation queries the response was YES. [2023-11-29 05:22:11,428 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53392 conditions, 18015 events. 9033/18015 cut-off events. For 88527/88532 co-relation queries the response was YES. Maximal size of possible extension queue 724. Compared 162441 event pairs, 827 based on Foata normal form. 25/15061 useless extension candidates. Maximal degree in co-relation 53274. Up to 2784 conditions per place. [2023-11-29 05:22:11,453 INFO L140 encePairwiseOnDemand]: 46/50 looper letters, 284 selfloop transitions, 210 changer transitions 153/658 dead transitions. [2023-11-29 05:22:11,454 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 368 places, 658 transitions, 6953 flow [2023-11-29 05:22:11,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2023-11-29 05:22:11,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2023-11-29 05:22:11,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 1072 transitions. [2023-11-29 05:22:11,456 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6916129032258065 [2023-11-29 05:22:11,456 INFO L72 ComplementDD]: Start complementDD. Operand 31 states and 1072 transitions. [2023-11-29 05:22:11,456 INFO L73 IsDeterministic]: Start isDeterministic. Operand 31 states and 1072 transitions. [2023-11-29 05:22:11,456 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 05:22:11,456 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 31 states and 1072 transitions. [2023-11-29 05:22:11,457 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 32 states, 31 states have (on average 34.58064516129032) internal successors, (1072), 31 states have internal predecessors, (1072), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:22:11,459 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 32 states, 32 states have (on average 50.0) internal successors, (1600), 32 states have internal predecessors, (1600), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:22:11,460 INFO L81 ComplementDD]: Finished complementDD. Result has 32 states, 32 states have (on average 50.0) internal successors, (1600), 32 states have internal predecessors, (1600), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:22:11,460 INFO L175 Difference]: Start difference. First operand has 338 places, 382 transitions, 4989 flow. Second operand 31 states and 1072 transitions. [2023-11-29 05:22:11,460 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 368 places, 658 transitions, 6953 flow [2023-11-29 05:22:11,829 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 356 places, 658 transitions, 6404 flow, removed 83 selfloop flow, removed 12 redundant places. [2023-11-29 05:22:11,836 INFO L231 Difference]: Finished difference. Result has 371 places, 382 transitions, 5086 flow [2023-11-29 05:22:11,837 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=4440, PETRI_DIFFERENCE_MINUEND_PLACES=326, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=382, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=210, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=172, PETRI_DIFFERENCE_SUBTRAHEND_STATES=31, PETRI_FLOW=5086, PETRI_PLACES=371, PETRI_TRANSITIONS=382} [2023-11-29 05:22:11,837 INFO L281 CegarLoopForPetriNet]: 49 programPoint places, 322 predicate places. [2023-11-29 05:22:11,837 INFO L495 AbstractCegarLoop]: Abstraction has has 371 places, 382 transitions, 5086 flow [2023-11-29 05:22:11,838 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 27.0) internal successors, (351), 13 states have internal predecessors, (351), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:22:11,838 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 05:22:11,838 INFO L208 CegarLoopForPetriNet]: trace histogram [6, 5, 5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:22:11,841 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_142851d4-eb66-4ad4-9584-482841cac750/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (31)] Ended with exit code 0 [2023-11-29 05:22:12,038 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_142851d4-eb66-4ad4-9584-482841cac750/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 05:22:12,038 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-11-29 05:22:12,039 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:22:12,039 INFO L85 PathProgramCache]: Analyzing trace with hash 1760369933, now seen corresponding path program 15 times [2023-11-29 05:22:12,039 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 05:22:12,039 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [213992452] [2023-11-29 05:22:12,039 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-29 05:22:12,039 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 05:22:12,039 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_142851d4-eb66-4ad4-9584-482841cac750/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 05:22:12,040 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_142851d4-eb66-4ad4-9584-482841cac750/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-29 05:22:12,041 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_142851d4-eb66-4ad4-9584-482841cac750/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (32)] Waiting until timeout for monitored process [2023-11-29 05:22:12,377 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2023-11-29 05:22:12,377 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 05:22:12,387 INFO L262 TraceCheckSpWp]: Trace formula consists of 238 conjuncts, 13 conjunts are in the unsatisfiable core [2023-11-29 05:22:12,388 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:22:12,695 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 10 proven. 54 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-11-29 05:22:12,695 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 05:22:14,576 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 10 proven. 56 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-11-29 05:22:14,576 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 05:22:14,576 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [213992452] [2023-11-29 05:22:14,576 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [213992452] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 05:22:14,576 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 05:22:14,576 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 10] total 15 [2023-11-29 05:22:14,576 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1449918700] [2023-11-29 05:22:14,576 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 05:22:14,577 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-11-29 05:22:14,577 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 05:22:14,577 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-11-29 05:22:14,577 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=186, Unknown=0, NotChecked=0, Total=240 [2023-11-29 05:22:14,578 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 50 [2023-11-29 05:22:14,578 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 371 places, 382 transitions, 5086 flow. Second operand has 16 states, 16 states have (on average 26.8125) internal successors, (429), 16 states have internal predecessors, (429), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:22:14,578 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 05:22:14,578 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 50 [2023-11-29 05:22:14,578 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 05:22:21,936 INFO L124 PetriNetUnfolderBase]: 14171/28357 cut-off events. [2023-11-29 05:22:21,936 INFO L125 PetriNetUnfolderBase]: For 116516/116524 co-relation queries the response was YES. [2023-11-29 05:22:22,278 INFO L83 FinitePrefix]: Finished finitePrefix Result has 84167 conditions, 28357 events. 14171/28357 cut-off events. For 116516/116524 co-relation queries the response was YES. Maximal size of possible extension queue 1145. Compared 275496 event pairs, 2180 based on Foata normal form. 18/23708 useless extension candidates. Maximal degree in co-relation 84034. Up to 5937 conditions per place. [2023-11-29 05:22:22,320 INFO L140 encePairwiseOnDemand]: 47/50 looper letters, 272 selfloop transitions, 261 changer transitions 0/544 dead transitions. [2023-11-29 05:22:22,321 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 377 places, 544 transitions, 8824 flow [2023-11-29 05:22:22,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-29 05:22:22,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-29 05:22:22,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 250 transitions. [2023-11-29 05:22:22,322 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7142857142857143 [2023-11-29 05:22:22,322 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 250 transitions. [2023-11-29 05:22:22,322 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 250 transitions. [2023-11-29 05:22:22,322 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 05:22:22,322 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 250 transitions. [2023-11-29 05:22:22,323 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 35.714285714285715) internal successors, (250), 7 states have internal predecessors, (250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:22:22,323 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 50.0) internal successors, (400), 8 states have internal predecessors, (400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:22:22,323 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 50.0) internal successors, (400), 8 states have internal predecessors, (400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:22:22,323 INFO L175 Difference]: Start difference. First operand has 371 places, 382 transitions, 5086 flow. Second operand 7 states and 250 transitions. [2023-11-29 05:22:22,324 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 377 places, 544 transitions, 8824 flow [2023-11-29 05:22:22,964 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 362 places, 544 transitions, 8380 flow, removed 48 selfloop flow, removed 15 redundant places. [2023-11-29 05:22:22,972 INFO L231 Difference]: Finished difference. Result has 363 places, 484 transitions, 7342 flow [2023-11-29 05:22:22,973 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=4833, PETRI_DIFFERENCE_MINUEND_PLACES=356, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=382, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=183, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=161, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=7342, PETRI_PLACES=363, PETRI_TRANSITIONS=484} [2023-11-29 05:22:22,973 INFO L281 CegarLoopForPetriNet]: 49 programPoint places, 314 predicate places. [2023-11-29 05:22:22,973 INFO L495 AbstractCegarLoop]: Abstraction has has 363 places, 484 transitions, 7342 flow [2023-11-29 05:22:22,973 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 26.8125) internal successors, (429), 16 states have internal predecessors, (429), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:22:22,973 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 05:22:22,974 INFO L208 CegarLoopForPetriNet]: trace histogram [6, 6, 5, 5, 5, 5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:22:22,978 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_142851d4-eb66-4ad4-9584-482841cac750/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (32)] Forceful destruction successful, exit code 0 [2023-11-29 05:22:23,174 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_142851d4-eb66-4ad4-9584-482841cac750/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 05:22:23,174 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-11-29 05:22:23,174 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:22:23,174 INFO L85 PathProgramCache]: Analyzing trace with hash -2019749833, now seen corresponding path program 16 times [2023-11-29 05:22:23,175 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 05:22:23,175 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1431344681] [2023-11-29 05:22:23,175 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-11-29 05:22:23,175 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 05:22:23,175 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_142851d4-eb66-4ad4-9584-482841cac750/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 05:22:23,176 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_142851d4-eb66-4ad4-9584-482841cac750/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-29 05:22:23,177 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_142851d4-eb66-4ad4-9584-482841cac750/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (33)] Waiting until timeout for monitored process [2023-11-29 05:22:23,370 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-11-29 05:22:23,370 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 05:22:23,378 INFO L262 TraceCheckSpWp]: Trace formula consists of 247 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-29 05:22:23,379 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:22:23,632 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 0 proven. 75 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2023-11-29 05:22:23,633 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 05:22:23,731 INFO L349 Elim1Store]: treesize reduction 210, result has 3.2 percent of original size [2023-11-29 05:22:23,732 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 90 treesize of output 27 [2023-11-29 05:22:24,107 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 0 proven. 75 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2023-11-29 05:22:24,107 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 05:22:24,107 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1431344681] [2023-11-29 05:22:24,107 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1431344681] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 05:22:24,107 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 05:22:24,108 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 13 [2023-11-29 05:22:24,108 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1016557581] [2023-11-29 05:22:24,108 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 05:22:24,108 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-11-29 05:22:24,108 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 05:22:24,109 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-11-29 05:22:24,109 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2023-11-29 05:22:24,109 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 50 [2023-11-29 05:22:24,109 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 363 places, 484 transitions, 7342 flow. Second operand has 14 states, 14 states have (on average 27.142857142857142) internal successors, (380), 14 states have internal predecessors, (380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:22:24,110 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 05:22:24,110 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 50 [2023-11-29 05:22:24,110 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 05:22:34,035 INFO L124 PetriNetUnfolderBase]: 15254/30472 cut-off events. [2023-11-29 05:22:34,035 INFO L125 PetriNetUnfolderBase]: For 163881/163886 co-relation queries the response was YES. [2023-11-29 05:22:34,385 INFO L83 FinitePrefix]: Finished finitePrefix Result has 94175 conditions, 30472 events. 15254/30472 cut-off events. For 163881/163886 co-relation queries the response was YES. Maximal size of possible extension queue 1210. Compared 296175 event pairs, 1389 based on Foata normal form. 11/25462 useless extension candidates. Maximal degree in co-relation 94047. Up to 4704 conditions per place. [2023-11-29 05:22:34,442 INFO L140 encePairwiseOnDemand]: 46/50 looper letters, 363 selfloop transitions, 316 changer transitions 39/729 dead transitions. [2023-11-29 05:22:34,442 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 385 places, 729 transitions, 10955 flow [2023-11-29 05:22:34,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2023-11-29 05:22:34,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2023-11-29 05:22:34,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 808 transitions. [2023-11-29 05:22:34,445 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7026086956521739 [2023-11-29 05:22:34,445 INFO L72 ComplementDD]: Start complementDD. Operand 23 states and 808 transitions. [2023-11-29 05:22:34,445 INFO L73 IsDeterministic]: Start isDeterministic. Operand 23 states and 808 transitions. [2023-11-29 05:22:34,445 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 05:22:34,445 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 23 states and 808 transitions. [2023-11-29 05:22:34,447 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 24 states, 23 states have (on average 35.130434782608695) internal successors, (808), 23 states have internal predecessors, (808), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:22:34,448 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 24 states, 24 states have (on average 50.0) internal successors, (1200), 24 states have internal predecessors, (1200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:22:34,448 INFO L81 ComplementDD]: Finished complementDD. Result has 24 states, 24 states have (on average 50.0) internal successors, (1200), 24 states have internal predecessors, (1200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:22:34,448 INFO L175 Difference]: Start difference. First operand has 363 places, 484 transitions, 7342 flow. Second operand 23 states and 808 transitions. [2023-11-29 05:22:34,448 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 385 places, 729 transitions, 10955 flow [2023-11-29 05:22:35,630 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 385 places, 729 transitions, 10349 flow, removed 303 selfloop flow, removed 0 redundant places. [2023-11-29 05:22:35,643 INFO L231 Difference]: Finished difference. Result has 397 places, 517 transitions, 8165 flow [2023-11-29 05:22:35,643 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=6860, PETRI_DIFFERENCE_MINUEND_PLACES=363, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=484, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=284, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=199, PETRI_DIFFERENCE_SUBTRAHEND_STATES=23, PETRI_FLOW=8165, PETRI_PLACES=397, PETRI_TRANSITIONS=517} [2023-11-29 05:22:35,644 INFO L281 CegarLoopForPetriNet]: 49 programPoint places, 348 predicate places. [2023-11-29 05:22:35,644 INFO L495 AbstractCegarLoop]: Abstraction has has 397 places, 517 transitions, 8165 flow [2023-11-29 05:22:35,644 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 27.142857142857142) internal successors, (380), 14 states have internal predecessors, (380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:22:35,644 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 05:22:35,644 INFO L208 CegarLoopForPetriNet]: trace histogram [6, 6, 5, 5, 5, 5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:22:35,648 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_142851d4-eb66-4ad4-9584-482841cac750/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (33)] Forceful destruction successful, exit code 0 [2023-11-29 05:22:35,844 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_142851d4-eb66-4ad4-9584-482841cac750/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 05:22:35,845 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-11-29 05:22:35,845 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:22:35,845 INFO L85 PathProgramCache]: Analyzing trace with hash -1016541279, now seen corresponding path program 17 times [2023-11-29 05:22:35,845 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 05:22:35,845 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1474632237] [2023-11-29 05:22:35,846 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-11-29 05:22:35,846 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 05:22:35,846 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_142851d4-eb66-4ad4-9584-482841cac750/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 05:22:35,847 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_142851d4-eb66-4ad4-9584-482841cac750/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-29 05:22:35,848 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_142851d4-eb66-4ad4-9584-482841cac750/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (34)] Waiting until timeout for monitored process [2023-11-29 05:22:36,252 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2023-11-29 05:22:36,252 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 05:22:36,265 INFO L262 TraceCheckSpWp]: Trace formula consists of 247 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-29 05:22:36,267 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:22:36,907 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 0 proven. 80 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-11-29 05:22:36,907 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 05:22:37,135 INFO L349 Elim1Store]: treesize reduction 216, result has 4.0 percent of original size [2023-11-29 05:22:37,135 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 91 treesize of output 29 [2023-11-29 05:22:37,616 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 0 proven. 80 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-11-29 05:22:37,616 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 05:22:37,616 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1474632237] [2023-11-29 05:22:37,616 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1474632237] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 05:22:37,616 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 05:22:37,616 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 17 [2023-11-29 05:22:37,616 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2096200268] [2023-11-29 05:22:37,617 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 05:22:37,617 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-11-29 05:22:37,617 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 05:22:37,618 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-11-29 05:22:37,618 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=268, Unknown=0, NotChecked=0, Total=306 [2023-11-29 05:22:37,618 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 50 [2023-11-29 05:22:37,619 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 397 places, 517 transitions, 8165 flow. Second operand has 18 states, 18 states have (on average 26.0) internal successors, (468), 18 states have internal predecessors, (468), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:22:37,619 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 05:22:37,619 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 50 [2023-11-29 05:22:37,619 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 05:22:42,132 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-29 05:22:46,357 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-29 05:22:50,677 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-29 05:22:55,066 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-29 05:22:59,256 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-29 05:23:03,796 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-29 05:23:08,245 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-29 05:23:12,519 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-29 05:23:22,730 INFO L124 PetriNetUnfolderBase]: 17386/34674 cut-off events. [2023-11-29 05:23:22,730 INFO L125 PetriNetUnfolderBase]: For 196379/196380 co-relation queries the response was YES. [2023-11-29 05:23:23,176 INFO L83 FinitePrefix]: Finished finitePrefix Result has 107435 conditions, 34674 events. 17386/34674 cut-off events. For 196379/196380 co-relation queries the response was YES. Maximal size of possible extension queue 1384. Compared 343212 event pairs, 1764 based on Foata normal form. 1/28961 useless extension candidates. Maximal degree in co-relation 107293. Up to 5634 conditions per place. [2023-11-29 05:23:23,235 INFO L140 encePairwiseOnDemand]: 46/50 looper letters, 296 selfloop transitions, 396 changer transitions 36/739 dead transitions. [2023-11-29 05:23:23,235 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 415 places, 739 transitions, 12247 flow [2023-11-29 05:23:23,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-11-29 05:23:23,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2023-11-29 05:23:23,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 662 transitions. [2023-11-29 05:23:23,237 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6968421052631579 [2023-11-29 05:23:23,237 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 662 transitions. [2023-11-29 05:23:23,237 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 662 transitions. [2023-11-29 05:23:23,237 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 05:23:23,237 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 662 transitions. [2023-11-29 05:23:23,238 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 34.8421052631579) internal successors, (662), 19 states have internal predecessors, (662), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:23:23,239 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 50.0) internal successors, (1000), 20 states have internal predecessors, (1000), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:23:23,239 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 50.0) internal successors, (1000), 20 states have internal predecessors, (1000), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:23:23,239 INFO L175 Difference]: Start difference. First operand has 397 places, 517 transitions, 8165 flow. Second operand 19 states and 662 transitions. [2023-11-29 05:23:23,239 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 415 places, 739 transitions, 12247 flow [2023-11-29 05:23:24,484 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 403 places, 739 transitions, 11299 flow, removed 135 selfloop flow, removed 12 redundant places. [2023-11-29 05:23:24,494 INFO L231 Difference]: Finished difference. Result has 404 places, 559 transitions, 8973 flow [2023-11-29 05:23:24,495 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=7366, PETRI_DIFFERENCE_MINUEND_PLACES=385, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=517, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=355, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=162, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=8973, PETRI_PLACES=404, PETRI_TRANSITIONS=559} [2023-11-29 05:23:24,495 INFO L281 CegarLoopForPetriNet]: 49 programPoint places, 355 predicate places. [2023-11-29 05:23:24,495 INFO L495 AbstractCegarLoop]: Abstraction has has 404 places, 559 transitions, 8973 flow [2023-11-29 05:23:24,495 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 26.0) internal successors, (468), 18 states have internal predecessors, (468), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:23:24,495 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 05:23:24,495 INFO L208 CegarLoopForPetriNet]: trace histogram [6, 6, 5, 5, 5, 5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:23:24,500 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_142851d4-eb66-4ad4-9584-482841cac750/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (34)] Ended with exit code 0 [2023-11-29 05:23:24,696 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_142851d4-eb66-4ad4-9584-482841cac750/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 05:23:24,696 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-11-29 05:23:24,696 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:23:24,696 INFO L85 PathProgramCache]: Analyzing trace with hash -1565542343, now seen corresponding path program 18 times [2023-11-29 05:23:24,696 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 05:23:24,697 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1483388180] [2023-11-29 05:23:24,697 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-11-29 05:23:24,697 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 05:23:24,697 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_142851d4-eb66-4ad4-9584-482841cac750/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 05:23:24,697 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_142851d4-eb66-4ad4-9584-482841cac750/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-29 05:23:24,698 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_142851d4-eb66-4ad4-9584-482841cac750/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (35)] Waiting until timeout for monitored process [2023-11-29 05:23:25,084 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 8 check-sat command(s) [2023-11-29 05:23:25,084 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 05:23:25,094 INFO L262 TraceCheckSpWp]: Trace formula consists of 247 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-29 05:23:25,096 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:23:25,405 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 0 proven. 77 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2023-11-29 05:23:25,406 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 05:23:25,549 INFO L349 Elim1Store]: treesize reduction 216, result has 4.0 percent of original size [2023-11-29 05:23:25,549 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 91 treesize of output 29 [2023-11-29 05:23:25,888 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 0 proven. 77 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2023-11-29 05:23:25,889 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 05:23:25,889 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1483388180] [2023-11-29 05:23:25,889 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1483388180] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 05:23:25,889 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 05:23:25,889 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 14 [2023-11-29 05:23:25,889 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [90855775] [2023-11-29 05:23:25,889 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 05:23:25,889 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-11-29 05:23:25,890 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 05:23:25,890 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-11-29 05:23:25,890 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=178, Unknown=0, NotChecked=0, Total=210 [2023-11-29 05:23:25,891 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 50 [2023-11-29 05:23:25,891 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 404 places, 559 transitions, 8973 flow. Second operand has 15 states, 15 states have (on average 26.866666666666667) internal successors, (403), 15 states have internal predecessors, (403), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:23:25,891 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 05:23:25,891 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 50 [2023-11-29 05:23:25,891 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 05:23:30,154 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-29 05:23:35,081 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers []