./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/goblint-regression/28-race_reach_90-arrayloop2_racing.i --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_693b630c-c941-46aa-b3e8-204297812dc3/bin/uautomizer-verify-BQ2R08f2Ya/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_693b630c-c941-46aa-b3e8-204297812dc3/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_693b630c-c941-46aa-b3e8-204297812dc3/bin/uautomizer-verify-BQ2R08f2Ya/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_693b630c-c941-46aa-b3e8-204297812dc3/bin/uautomizer-verify-BQ2R08f2Ya/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/goblint-regression/28-race_reach_90-arrayloop2_racing.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_693b630c-c941-46aa-b3e8-204297812dc3/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_693b630c-c941-46aa-b3e8-204297812dc3/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 f41f3c018db74ffccd5759d166eb9816a1bf73b1747e3e539ecb5bf51feb56af --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-29 04:31:56,531 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-29 04:31:56,607 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_693b630c-c941-46aa-b3e8-204297812dc3/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2023-11-29 04:31:56,613 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-29 04:31:56,613 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-29 04:31:56,643 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-29 04:31:56,644 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-29 04:31:56,645 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-29 04:31:56,645 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-29 04:31:56,646 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-29 04:31:56,646 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-29 04:31:56,647 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-29 04:31:56,648 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-29 04:31:56,648 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-29 04:31:56,649 INFO L153 SettingsManager]: * Use SBE=true [2023-11-29 04:31:56,650 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-29 04:31:56,650 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-29 04:31:56,651 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-29 04:31:56,651 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-29 04:31:56,652 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-29 04:31:56,652 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-29 04:31:56,653 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-29 04:31:56,654 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-29 04:31:56,654 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-29 04:31:56,655 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-29 04:31:56,655 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-29 04:31:56,655 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-29 04:31:56,656 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-29 04:31:56,656 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-29 04:31:56,657 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-29 04:31:56,657 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-29 04:31:56,658 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-29 04:31:56,658 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 04:31:56,659 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-29 04:31:56,659 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-29 04:31:56,659 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-29 04:31:56,659 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-29 04:31:56,660 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-29 04:31:56,660 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-29 04:31:56,660 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-29 04:31:56,660 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-29 04:31:56,661 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_693b630c-c941-46aa-b3e8-204297812dc3/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_693b630c-c941-46aa-b3e8-204297812dc3/bin/uautomizer-verify-BQ2R08f2Ya Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f41f3c018db74ffccd5759d166eb9816a1bf73b1747e3e539ecb5bf51feb56af [2023-11-29 04:31:56,923 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-29 04:31:56,947 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-29 04:31:56,951 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-29 04:31:56,952 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-29 04:31:56,952 INFO L274 PluginConnector]: CDTParser initialized [2023-11-29 04:31:56,954 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_693b630c-c941-46aa-b3e8-204297812dc3/bin/uautomizer-verify-BQ2R08f2Ya/../../sv-benchmarks/c/goblint-regression/28-race_reach_90-arrayloop2_racing.i [2023-11-29 04:31:59,974 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-29 04:32:00,245 INFO L384 CDTParser]: Found 1 translation units. [2023-11-29 04:32:00,246 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_693b630c-c941-46aa-b3e8-204297812dc3/sv-benchmarks/c/goblint-regression/28-race_reach_90-arrayloop2_racing.i [2023-11-29 04:32:00,265 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_693b630c-c941-46aa-b3e8-204297812dc3/bin/uautomizer-verify-BQ2R08f2Ya/data/f5800b030/05f72a5f4e0441ca9dd185c13dec73a9/FLAG938b1d9f7 [2023-11-29 04:32:00,282 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_693b630c-c941-46aa-b3e8-204297812dc3/bin/uautomizer-verify-BQ2R08f2Ya/data/f5800b030/05f72a5f4e0441ca9dd185c13dec73a9 [2023-11-29 04:32:00,284 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-29 04:32:00,286 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-29 04:32:00,288 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-29 04:32:00,288 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-29 04:32:00,293 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-29 04:32:00,294 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 04:32:00" (1/1) ... [2023-11-29 04:32:00,295 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6c35b905 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:32:00, skipping insertion in model container [2023-11-29 04:32:00,295 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 04:32:00" (1/1) ... [2023-11-29 04:32:00,353 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-29 04:32:00,919 WARN L1590 CHandler]: Possible shadowing of function new [2023-11-29 04:32:00,920 WARN L1590 CHandler]: Possible shadowing of function new [2023-11-29 04:32:00,920 WARN L1590 CHandler]: Possible shadowing of function new [2023-11-29 04:32:00,921 WARN L1590 CHandler]: Possible shadowing of function new [2023-11-29 04:32:00,962 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 04:32:00,989 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 04:32:00,990 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@452e238c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:32:00, skipping insertion in model container [2023-11-29 04:32:00,990 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-29 04:32:00,991 INFO L186 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2023-11-29 04:32:00,993 INFO L158 Benchmark]: Toolchain (without parser) took 706.04ms. Allocated memory is still 142.6MB. Free memory was 96.4MB in the beginning and 79.6MB in the end (delta: 16.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2023-11-29 04:32:00,994 INFO L158 Benchmark]: CDTParser took 0.24ms. Allocated memory is still 142.6MB. Free memory is still 113.1MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-29 04:32:00,995 INFO L158 Benchmark]: CACSL2BoogieTranslator took 703.24ms. Allocated memory is still 142.6MB. Free memory was 96.4MB in the beginning and 79.6MB in the end (delta: 16.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2023-11-29 04:32:00,996 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24ms. Allocated memory is still 142.6MB. Free memory is still 113.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 703.24ms. Allocated memory is still 142.6MB. Free memory was 96.4MB in the beginning and 79.6MB in the end (delta: 16.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 1044]: 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_693b630c-c941-46aa-b3e8-204297812dc3/bin/uautomizer-verify-BQ2R08f2Ya/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_693b630c-c941-46aa-b3e8-204297812dc3/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_693b630c-c941-46aa-b3e8-204297812dc3/bin/uautomizer-verify-BQ2R08f2Ya/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_693b630c-c941-46aa-b3e8-204297812dc3/bin/uautomizer-verify-BQ2R08f2Ya/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/goblint-regression/28-race_reach_90-arrayloop2_racing.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_693b630c-c941-46aa-b3e8-204297812dc3/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_693b630c-c941-46aa-b3e8-204297812dc3/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 f41f3c018db74ffccd5759d166eb9816a1bf73b1747e3e539ecb5bf51feb56af --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-29 04:32:03,020 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-29 04:32:03,097 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_693b630c-c941-46aa-b3e8-204297812dc3/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2023-11-29 04:32:03,114 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-29 04:32:03,115 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-29 04:32:03,148 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-29 04:32:03,149 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-29 04:32:03,150 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-29 04:32:03,150 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-29 04:32:03,151 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-29 04:32:03,152 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-29 04:32:03,152 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-29 04:32:03,153 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-29 04:32:03,154 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-29 04:32:03,154 INFO L153 SettingsManager]: * Use SBE=true [2023-11-29 04:32:03,155 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-29 04:32:03,156 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-29 04:32:03,156 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-29 04:32:03,157 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-29 04:32:03,157 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-29 04:32:03,158 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-29 04:32:03,160 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-29 04:32:03,160 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-29 04:32:03,161 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-29 04:32:03,161 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-29 04:32:03,162 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-11-29 04:32:03,162 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-11-29 04:32:03,163 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-29 04:32:03,163 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-29 04:32:03,164 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-29 04:32:03,164 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-29 04:32:03,165 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-29 04:32:03,165 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-29 04:32:03,165 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-29 04:32:03,166 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 04:32:03,166 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-29 04:32:03,166 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-29 04:32:03,166 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-11-29 04:32:03,167 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-11-29 04:32:03,167 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-29 04:32:03,167 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-29 04:32:03,168 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-29 04:32:03,168 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-29 04:32:03,168 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-11-29 04:32:03,168 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_693b630c-c941-46aa-b3e8-204297812dc3/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_693b630c-c941-46aa-b3e8-204297812dc3/bin/uautomizer-verify-BQ2R08f2Ya Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f41f3c018db74ffccd5759d166eb9816a1bf73b1747e3e539ecb5bf51feb56af [2023-11-29 04:32:03,501 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-29 04:32:03,524 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-29 04:32:03,526 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-29 04:32:03,528 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-29 04:32:03,528 INFO L274 PluginConnector]: CDTParser initialized [2023-11-29 04:32:03,529 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_693b630c-c941-46aa-b3e8-204297812dc3/bin/uautomizer-verify-BQ2R08f2Ya/../../sv-benchmarks/c/goblint-regression/28-race_reach_90-arrayloop2_racing.i [2023-11-29 04:32:06,518 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-29 04:32:06,806 INFO L384 CDTParser]: Found 1 translation units. [2023-11-29 04:32:06,806 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_693b630c-c941-46aa-b3e8-204297812dc3/sv-benchmarks/c/goblint-regression/28-race_reach_90-arrayloop2_racing.i [2023-11-29 04:32:06,827 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_693b630c-c941-46aa-b3e8-204297812dc3/bin/uautomizer-verify-BQ2R08f2Ya/data/537c96eab/d269d02abf1a41bb8279be3648c71b62/FLAGe38ac1a12 [2023-11-29 04:32:06,844 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_693b630c-c941-46aa-b3e8-204297812dc3/bin/uautomizer-verify-BQ2R08f2Ya/data/537c96eab/d269d02abf1a41bb8279be3648c71b62 [2023-11-29 04:32:06,847 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-29 04:32:06,848 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-29 04:32:06,850 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-29 04:32:06,850 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-29 04:32:06,856 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-29 04:32:06,857 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 04:32:06" (1/1) ... [2023-11-29 04:32:06,858 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@210afb39 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:32:06, skipping insertion in model container [2023-11-29 04:32:06,858 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 04:32:06" (1/1) ... [2023-11-29 04:32:06,925 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-29 04:32:07,537 WARN L1590 CHandler]: Possible shadowing of function new [2023-11-29 04:32:07,537 WARN L1590 CHandler]: Possible shadowing of function new [2023-11-29 04:32:07,538 WARN L1590 CHandler]: Possible shadowing of function new [2023-11-29 04:32:07,539 WARN L1590 CHandler]: Possible shadowing of function new [2023-11-29 04:32:07,576 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 04:32:07,605 INFO L199 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2023-11-29 04:32:07,625 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-29 04:32:07,658 WARN L1590 CHandler]: Possible shadowing of function new [2023-11-29 04:32:07,659 WARN L1590 CHandler]: Possible shadowing of function new [2023-11-29 04:32:07,659 WARN L1590 CHandler]: Possible shadowing of function new [2023-11-29 04:32:07,660 WARN L1590 CHandler]: Possible shadowing of function new [2023-11-29 04:32:07,680 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 04:32:07,690 INFO L202 MainTranslator]: Completed pre-run [2023-11-29 04:32:07,731 WARN L1590 CHandler]: Possible shadowing of function new [2023-11-29 04:32:07,731 WARN L1590 CHandler]: Possible shadowing of function new [2023-11-29 04:32:07,732 WARN L1590 CHandler]: Possible shadowing of function new [2023-11-29 04:32:07,732 WARN L1590 CHandler]: Possible shadowing of function new [2023-11-29 04:32:07,751 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 04:32:07,849 INFO L206 MainTranslator]: Completed translation [2023-11-29 04:32:07,849 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:32:07 WrapperNode [2023-11-29 04:32:07,849 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-29 04:32:07,851 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-29 04:32:07,851 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-29 04:32:07,851 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-29 04:32:07,859 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:32:07" (1/1) ... [2023-11-29 04:32:07,887 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:32:07" (1/1) ... [2023-11-29 04:32:07,931 INFO L138 Inliner]: procedures = 283, calls = 73, calls flagged for inlining = 11, calls inlined = 12, statements flattened = 336 [2023-11-29 04:32:07,932 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-29 04:32:07,933 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-29 04:32:07,933 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-29 04:32:07,933 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-29 04:32:07,945 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:32:07" (1/1) ... [2023-11-29 04:32:07,945 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:32:07" (1/1) ... [2023-11-29 04:32:07,951 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:32:07" (1/1) ... [2023-11-29 04:32:07,980 INFO L175 MemorySlicer]: Split 37 memory accesses to 5 slices as follows [2, 5, 2, 26, 2]. 70 percent of accesses are in the largest equivalence class. The 7 initializations are split as follows [2, 5, 0, 0, 0]. The 17 writes are split as follows [0, 0, 1, 15, 1]. [2023-11-29 04:32:07,980 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:32:07" (1/1) ... [2023-11-29 04:32:07,981 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:32:07" (1/1) ... [2023-11-29 04:32:08,004 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:32:07" (1/1) ... [2023-11-29 04:32:08,011 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:32:07" (1/1) ... [2023-11-29 04:32:08,016 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:32:07" (1/1) ... [2023-11-29 04:32:08,021 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:32:07" (1/1) ... [2023-11-29 04:32:08,028 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-29 04:32:08,029 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-29 04:32:08,029 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-29 04:32:08,029 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-29 04:32:08,030 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:32:07" (1/1) ... [2023-11-29 04:32:08,037 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 04:32:08,050 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_693b630c-c941-46aa-b3e8-204297812dc3/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 04:32:08,064 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_693b630c-c941-46aa-b3e8-204297812dc3/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-29 04:32:08,068 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_693b630c-c941-46aa-b3e8-204297812dc3/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-29 04:32:08,105 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#0 [2023-11-29 04:32:08,105 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#1 [2023-11-29 04:32:08,105 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#2 [2023-11-29 04:32:08,106 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#3 [2023-11-29 04:32:08,106 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#4 [2023-11-29 04:32:08,106 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-29 04:32:08,106 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2023-11-29 04:32:08,106 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2023-11-29 04:32:08,106 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2023-11-29 04:32:08,107 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#3 [2023-11-29 04:32:08,107 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#4 [2023-11-29 04:32:08,107 INFO L130 BoogieDeclarations]: Found specification of procedure t1_fun [2023-11-29 04:32:08,107 INFO L138 BoogieDeclarations]: Found implementation of procedure t1_fun [2023-11-29 04:32:08,107 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-29 04:32:08,107 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#0 [2023-11-29 04:32:08,108 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#1 [2023-11-29 04:32:08,108 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#2 [2023-11-29 04:32:08,108 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#3 [2023-11-29 04:32:08,108 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#4 [2023-11-29 04:32:08,108 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2023-11-29 04:32:08,108 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#1 [2023-11-29 04:32:08,109 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#2 [2023-11-29 04:32:08,109 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#3 [2023-11-29 04:32:08,109 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#4 [2023-11-29 04:32:08,109 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4#0 [2023-11-29 04:32:08,109 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4#1 [2023-11-29 04:32:08,109 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4#2 [2023-11-29 04:32:08,110 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4#3 [2023-11-29 04:32:08,110 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4#4 [2023-11-29 04:32:08,110 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2023-11-29 04:32:08,110 INFO L130 BoogieDeclarations]: Found specification of procedure t2_fun [2023-11-29 04:32:08,110 INFO L138 BoogieDeclarations]: Found implementation of procedure t2_fun [2023-11-29 04:32:08,110 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-11-29 04:32:08,111 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-29 04:32:08,111 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-29 04:32:08,111 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2023-11-29 04:32:08,111 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2023-11-29 04:32:08,111 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2023-11-29 04:32:08,111 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#3 [2023-11-29 04:32:08,111 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#4 [2023-11-29 04:32:08,112 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-29 04:32:08,112 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-29 04:32:08,114 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 04:32:08,327 INFO L241 CfgBuilder]: Building ICFG [2023-11-29 04:32:08,330 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-29 04:32:09,353 INFO L282 CfgBuilder]: Performing block encoding [2023-11-29 04:32:09,702 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-29 04:32:09,702 INFO L309 CfgBuilder]: Removed 30 assume(true) statements. [2023-11-29 04:32:09,703 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 04:32:09 BoogieIcfgContainer [2023-11-29 04:32:09,703 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-29 04:32:09,706 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-29 04:32:09,706 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-29 04:32:09,709 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-29 04:32:09,709 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 04:32:06" (1/3) ... [2023-11-29 04:32:09,710 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6173f99b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 04:32:09, skipping insertion in model container [2023-11-29 04:32:09,710 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:32:07" (2/3) ... [2023-11-29 04:32:09,710 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6173f99b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 04:32:09, skipping insertion in model container [2023-11-29 04:32:09,710 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 04:32:09" (3/3) ... [2023-11-29 04:32:09,712 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_90-arrayloop2_racing.i [2023-11-29 04:32:09,730 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-29 04:32:09,730 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 59 error locations. [2023-11-29 04:32:09,730 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-29 04:32:09,851 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2023-11-29 04:32:09,907 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 176 places, 207 transitions, 434 flow [2023-11-29 04:32:10,006 INFO L124 PetriNetUnfolderBase]: 55/343 cut-off events. [2023-11-29 04:32:10,006 INFO L125 PetriNetUnfolderBase]: For 8/8 co-relation queries the response was YES. [2023-11-29 04:32:10,013 INFO L83 FinitePrefix]: Finished finitePrefix Result has 360 conditions, 343 events. 55/343 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1969 event pairs, 0 based on Foata normal form. 0/185 useless extension candidates. Maximal degree in co-relation 189. Up to 8 conditions per place. [2023-11-29 04:32:10,013 INFO L82 GeneralOperation]: Start removeDead. Operand has 176 places, 207 transitions, 434 flow [2023-11-29 04:32:10,024 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 176 places, 207 transitions, 434 flow [2023-11-29 04:32:10,036 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-29 04:32:10,043 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;@1cce8bf4, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-29 04:32:10,043 INFO L358 AbstractCegarLoop]: Starting to check reachability of 91 error locations. [2023-11-29 04:32:10,046 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-29 04:32:10,046 INFO L124 PetriNetUnfolderBase]: 0/4 cut-off events. [2023-11-29 04:32:10,046 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-29 04:32:10,047 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 04:32:10,047 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-11-29 04:32:10,048 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [t2_funErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, t2_funErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, t2_funErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 88 more)] === [2023-11-29 04:32:10,053 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:32:10,053 INFO L85 PathProgramCache]: Analyzing trace with hash 908279, now seen corresponding path program 1 times [2023-11-29 04:32:10,065 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 04:32:10,065 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1957130604] [2023-11-29 04:32:10,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:32:10,066 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 04:32:10,066 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_693b630c-c941-46aa-b3e8-204297812dc3/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 04:32:10,067 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_693b630c-c941-46aa-b3e8-204297812dc3/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 04:32:10,101 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_693b630c-c941-46aa-b3e8-204297812dc3/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 04:32:10,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:32:10,235 INFO L262 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-29 04:32:10,240 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:32:10,314 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 04:32:10,314 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 04:32:10,315 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 04:32:10,315 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1957130604] [2023-11-29 04:32:10,316 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1957130604] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:32:10,316 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:32:10,316 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 04:32:10,318 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [942539821] [2023-11-29 04:32:10,319 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:32:10,326 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 04:32:10,330 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 04:32:10,380 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 04:32:10,381 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 04:32:10,949 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 102 out of 207 [2023-11-29 04:32:10,953 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 176 places, 207 transitions, 434 flow. Second operand has 4 states, 4 states have (on average 102.75) internal successors, (411), 4 states have internal predecessors, (411), 0 states have call successors, (0), 0 states 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 04:32:10,953 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 04:32:10,953 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 102 of 207 [2023-11-29 04:32:10,955 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 04:32:14,151 INFO L124 PetriNetUnfolderBase]: 7529/16637 cut-off events. [2023-11-29 04:32:14,151 INFO L125 PetriNetUnfolderBase]: For 261/263 co-relation queries the response was YES. [2023-11-29 04:32:14,202 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28060 conditions, 16637 events. 7529/16637 cut-off events. For 261/263 co-relation queries the response was YES. Maximal size of possible extension queue 542. Compared 156072 event pairs, 4501 based on Foata normal form. 2886/17302 useless extension candidates. Maximal degree in co-relation 26788. Up to 7851 conditions per place. [2023-11-29 04:32:14,331 INFO L140 encePairwiseOnDemand]: 175/207 looper letters, 119 selfloop transitions, 4 changer transitions 0/225 dead transitions. [2023-11-29 04:32:14,331 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 175 places, 225 transitions, 716 flow [2023-11-29 04:32:14,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 04:32:14,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-29 04:32:14,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 583 transitions. [2023-11-29 04:32:14,352 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7041062801932367 [2023-11-29 04:32:14,352 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 583 transitions. [2023-11-29 04:32:14,353 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 583 transitions. [2023-11-29 04:32:14,356 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 04:32:14,359 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 583 transitions. [2023-11-29 04:32:14,365 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 145.75) internal successors, (583), 4 states have internal predecessors, (583), 0 states have call successors, (0), 0 states 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 04:32:14,372 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 207.0) internal successors, (1035), 5 states have internal predecessors, (1035), 0 states have call successors, (0), 0 states 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 04:32:14,373 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 207.0) internal successors, (1035), 5 states have internal predecessors, (1035), 0 states have call successors, (0), 0 states 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 04:32:14,375 INFO L175 Difference]: Start difference. First operand has 176 places, 207 transitions, 434 flow. Second operand 4 states and 583 transitions. [2023-11-29 04:32:14,376 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 175 places, 225 transitions, 716 flow [2023-11-29 04:32:14,383 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 175 places, 225 transitions, 716 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-29 04:32:14,389 INFO L231 Difference]: Finished difference. Result has 176 places, 179 transitions, 394 flow [2023-11-29 04:32:14,392 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=207, PETRI_DIFFERENCE_MINUEND_FLOW=378, PETRI_DIFFERENCE_MINUEND_PLACES=172, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=179, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=175, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=394, PETRI_PLACES=176, PETRI_TRANSITIONS=179} [2023-11-29 04:32:14,396 INFO L281 CegarLoopForPetriNet]: 176 programPoint places, 0 predicate places. [2023-11-29 04:32:14,396 INFO L495 AbstractCegarLoop]: Abstraction has has 176 places, 179 transitions, 394 flow [2023-11-29 04:32:14,397 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 102.75) internal successors, (411), 4 states have internal predecessors, (411), 0 states have call successors, (0), 0 states 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 04:32:14,397 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 04:32:14,397 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-11-29 04:32:14,401 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_693b630c-c941-46aa-b3e8-204297812dc3/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 04:32:14,599 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_693b630c-c941-46aa-b3e8-204297812dc3/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 04:32:14,599 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [t2_funErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, t2_funErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, t2_funErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 88 more)] === [2023-11-29 04:32:14,600 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:32:14,600 INFO L85 PathProgramCache]: Analyzing trace with hash 908280, now seen corresponding path program 1 times [2023-11-29 04:32:14,600 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 04:32:14,600 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [31310194] [2023-11-29 04:32:14,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:32:14,601 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 04:32:14,601 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_693b630c-c941-46aa-b3e8-204297812dc3/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 04:32:14,602 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_693b630c-c941-46aa-b3e8-204297812dc3/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 04:32:14,604 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_693b630c-c941-46aa-b3e8-204297812dc3/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 04:32:14,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:32:14,708 INFO L262 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-29 04:32:14,709 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:32:14,779 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 04:32:14,780 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 04:32:14,780 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 04:32:14,780 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [31310194] [2023-11-29 04:32:14,780 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [31310194] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:32:14,781 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:32:14,781 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 04:32:14,781 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1669226614] [2023-11-29 04:32:14,781 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:32:14,782 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 04:32:14,782 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 04:32:14,783 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 04:32:14,783 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 04:32:15,365 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 104 out of 207 [2023-11-29 04:32:15,366 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 176 places, 179 transitions, 394 flow. Second operand has 4 states, 4 states have (on average 104.75) internal successors, (419), 4 states have internal predecessors, (419), 0 states have call successors, (0), 0 states 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 04:32:15,366 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 04:32:15,366 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 104 of 207 [2023-11-29 04:32:15,366 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 04:32:17,862 INFO L124 PetriNetUnfolderBase]: 7464/17559 cut-off events. [2023-11-29 04:32:17,862 INFO L125 PetriNetUnfolderBase]: For 778/780 co-relation queries the response was YES. [2023-11-29 04:32:17,898 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29834 conditions, 17559 events. 7464/17559 cut-off events. For 778/780 co-relation queries the response was YES. Maximal size of possible extension queue 557. Compared 170757 event pairs, 6385 based on Foata normal form. 3/15149 useless extension candidates. Maximal degree in co-relation 28468. Up to 11048 conditions per place. [2023-11-29 04:32:17,971 INFO L140 encePairwiseOnDemand]: 199/207 looper letters, 76 selfloop transitions, 5 changer transitions 0/183 dead transitions. [2023-11-29 04:32:17,972 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 179 places, 183 transitions, 570 flow [2023-11-29 04:32:17,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 04:32:17,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-29 04:32:17,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 500 transitions. [2023-11-29 04:32:17,976 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6038647342995169 [2023-11-29 04:32:17,976 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 500 transitions. [2023-11-29 04:32:17,976 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 500 transitions. [2023-11-29 04:32:17,977 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 04:32:17,977 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 500 transitions. [2023-11-29 04:32:17,979 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 125.0) internal successors, (500), 4 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 04:32:17,982 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 207.0) internal successors, (1035), 5 states have internal predecessors, (1035), 0 states have call successors, (0), 0 states 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 04:32:17,983 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 207.0) internal successors, (1035), 5 states have internal predecessors, (1035), 0 states have call successors, (0), 0 states 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 04:32:17,983 INFO L175 Difference]: Start difference. First operand has 176 places, 179 transitions, 394 flow. Second operand 4 states and 500 transitions. [2023-11-29 04:32:17,984 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 179 places, 183 transitions, 570 flow [2023-11-29 04:32:17,993 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 176 places, 183 transitions, 558 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-11-29 04:32:17,998 INFO L231 Difference]: Finished difference. Result has 178 places, 183 transitions, 427 flow [2023-11-29 04:32:17,998 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=207, PETRI_DIFFERENCE_MINUEND_FLOW=386, PETRI_DIFFERENCE_MINUEND_PLACES=173, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=179, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=174, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=427, PETRI_PLACES=178, PETRI_TRANSITIONS=183} [2023-11-29 04:32:17,999 INFO L281 CegarLoopForPetriNet]: 176 programPoint places, 2 predicate places. [2023-11-29 04:32:18,000 INFO L495 AbstractCegarLoop]: Abstraction has has 178 places, 183 transitions, 427 flow [2023-11-29 04:32:18,000 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 104.75) internal successors, (419), 4 states have internal predecessors, (419), 0 states have call successors, (0), 0 states 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 04:32:18,001 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 04:32:18,001 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-11-29 04:32:18,003 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_693b630c-c941-46aa-b3e8-204297812dc3/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 04:32:18,202 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_693b630c-c941-46aa-b3e8-204297812dc3/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 04:32:18,202 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [t2_funErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, t2_funErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, t2_funErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 88 more)] === [2023-11-29 04:32:18,203 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:32:18,203 INFO L85 PathProgramCache]: Analyzing trace with hash 1289630874, now seen corresponding path program 1 times [2023-11-29 04:32:18,204 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 04:32:18,204 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2021995360] [2023-11-29 04:32:18,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:32:18,204 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 04:32:18,205 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_693b630c-c941-46aa-b3e8-204297812dc3/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 04:32:18,206 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_693b630c-c941-46aa-b3e8-204297812dc3/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 04:32:18,208 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_693b630c-c941-46aa-b3e8-204297812dc3/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 04:32:18,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:32:18,354 INFO L262 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-29 04:32:18,356 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:32:18,395 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 6 treesize of output 7 [2023-11-29 04:32:18,408 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 04:32:18,408 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 04:32:18,409 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 04:32:18,409 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2021995360] [2023-11-29 04:32:18,409 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2021995360] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:32:18,410 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:32:18,410 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 04:32:18,410 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [248432328] [2023-11-29 04:32:18,410 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:32:18,411 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 04:32:18,411 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 04:32:18,412 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 04:32:18,412 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 04:32:18,686 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 207 [2023-11-29 04:32:18,687 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 178 places, 183 transitions, 427 flow. Second operand has 3 states, 3 states have (on average 108.66666666666667) internal successors, (326), 3 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 04:32:18,687 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 04:32:18,687 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 207 [2023-11-29 04:32:18,687 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 04:32:20,808 INFO L124 PetriNetUnfolderBase]: 7464/17558 cut-off events. [2023-11-29 04:32:20,808 INFO L125 PetriNetUnfolderBase]: For 271/273 co-relation queries the response was YES. [2023-11-29 04:32:20,851 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29313 conditions, 17558 events. 7464/17558 cut-off events. For 271/273 co-relation queries the response was YES. Maximal size of possible extension queue 556. Compared 170707 event pairs, 6385 based on Foata normal form. 0/15144 useless extension candidates. Maximal degree in co-relation 29279. Up to 11044 conditions per place. [2023-11-29 04:32:20,921 INFO L140 encePairwiseOnDemand]: 204/207 looper letters, 74 selfloop transitions, 3 changer transitions 0/182 dead transitions. [2023-11-29 04:32:20,921 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 179 places, 182 transitions, 579 flow [2023-11-29 04:32:20,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 04:32:20,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-29 04:32:20,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 395 transitions. [2023-11-29 04:32:20,923 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6360708534621579 [2023-11-29 04:32:20,924 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 395 transitions. [2023-11-29 04:32:20,924 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 395 transitions. [2023-11-29 04:32:20,924 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 04:32:20,924 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 395 transitions. [2023-11-29 04:32:20,926 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 131.66666666666666) internal successors, (395), 3 states have internal predecessors, (395), 0 states have call successors, (0), 0 states 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 04:32:20,928 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 207.0) internal successors, (828), 4 states have internal predecessors, (828), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:32:20,929 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 207.0) internal successors, (828), 4 states have internal predecessors, (828), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:32:20,929 INFO L175 Difference]: Start difference. First operand has 178 places, 183 transitions, 427 flow. Second operand 3 states and 395 transitions. [2023-11-29 04:32:20,929 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 179 places, 182 transitions, 579 flow [2023-11-29 04:32:20,933 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 178 places, 182 transitions, 576 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-29 04:32:20,938 INFO L231 Difference]: Finished difference. Result has 178 places, 182 transitions, 428 flow [2023-11-29 04:32:20,939 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=207, PETRI_DIFFERENCE_MINUEND_FLOW=422, PETRI_DIFFERENCE_MINUEND_PLACES=176, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=182, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=179, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=428, PETRI_PLACES=178, PETRI_TRANSITIONS=182} [2023-11-29 04:32:20,940 INFO L281 CegarLoopForPetriNet]: 176 programPoint places, 2 predicate places. [2023-11-29 04:32:20,940 INFO L495 AbstractCegarLoop]: Abstraction has has 178 places, 182 transitions, 428 flow [2023-11-29 04:32:20,940 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 108.66666666666667) internal successors, (326), 3 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 04:32:20,941 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 04:32:20,941 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-11-29 04:32:20,944 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_693b630c-c941-46aa-b3e8-204297812dc3/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 04:32:21,141 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_693b630c-c941-46aa-b3e8-204297812dc3/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 04:32:21,142 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [t2_funErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, t2_funErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, t2_funErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 88 more)] === [2023-11-29 04:32:21,142 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:32:21,143 INFO L85 PathProgramCache]: Analyzing trace with hash 1289630875, now seen corresponding path program 1 times [2023-11-29 04:32:21,143 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 04:32:21,143 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1279335828] [2023-11-29 04:32:21,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:32:21,144 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 04:32:21,144 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_693b630c-c941-46aa-b3e8-204297812dc3/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 04:32:21,145 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_693b630c-c941-46aa-b3e8-204297812dc3/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 04:32:21,148 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_693b630c-c941-46aa-b3e8-204297812dc3/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 04:32:21,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:32:21,289 INFO L262 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-29 04:32:21,291 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:32:21,303 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 6 treesize of output 5 [2023-11-29 04:32:21,315 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 04:32:21,315 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 04:32:21,315 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 04:32:21,316 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1279335828] [2023-11-29 04:32:21,316 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1279335828] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:32:21,316 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:32:21,317 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 04:32:21,317 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1297999065] [2023-11-29 04:32:21,317 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:32:21,318 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 04:32:21,318 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 04:32:21,319 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 04:32:21,319 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 04:32:21,633 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 207 [2023-11-29 04:32:21,634 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 178 places, 182 transitions, 428 flow. Second operand has 3 states, 3 states have (on average 108.66666666666667) internal successors, (326), 3 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 04:32:21,634 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 04:32:21,634 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 207 [2023-11-29 04:32:21,634 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 04:32:23,697 INFO L124 PetriNetUnfolderBase]: 7464/17557 cut-off events. [2023-11-29 04:32:23,697 INFO L125 PetriNetUnfolderBase]: For 273/275 co-relation queries the response was YES. [2023-11-29 04:32:23,742 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29313 conditions, 17557 events. 7464/17557 cut-off events. For 273/275 co-relation queries the response was YES. Maximal size of possible extension queue 556. Compared 170799 event pairs, 6385 based on Foata normal form. 0/15145 useless extension candidates. Maximal degree in co-relation 29278. Up to 11044 conditions per place. [2023-11-29 04:32:23,836 INFO L140 encePairwiseOnDemand]: 204/207 looper letters, 74 selfloop transitions, 3 changer transitions 0/181 dead transitions. [2023-11-29 04:32:23,837 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 179 places, 181 transitions, 580 flow [2023-11-29 04:32:23,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 04:32:23,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-29 04:32:23,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 395 transitions. [2023-11-29 04:32:23,840 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6360708534621579 [2023-11-29 04:32:23,840 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 395 transitions. [2023-11-29 04:32:23,840 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 395 transitions. [2023-11-29 04:32:23,841 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 04:32:23,841 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 395 transitions. [2023-11-29 04:32:23,843 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 131.66666666666666) internal successors, (395), 3 states have internal predecessors, (395), 0 states have call successors, (0), 0 states 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 04:32:23,846 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 207.0) internal successors, (828), 4 states have internal predecessors, (828), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:32:23,847 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 207.0) internal successors, (828), 4 states have internal predecessors, (828), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:32:23,847 INFO L175 Difference]: Start difference. First operand has 178 places, 182 transitions, 428 flow. Second operand 3 states and 395 transitions. [2023-11-29 04:32:23,847 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 179 places, 181 transitions, 580 flow [2023-11-29 04:32:23,851 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 177 places, 181 transitions, 574 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-29 04:32:23,855 INFO L231 Difference]: Finished difference. Result has 177 places, 181 transitions, 426 flow [2023-11-29 04:32:23,856 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=207, PETRI_DIFFERENCE_MINUEND_FLOW=420, PETRI_DIFFERENCE_MINUEND_PLACES=175, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=181, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=178, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=426, PETRI_PLACES=177, PETRI_TRANSITIONS=181} [2023-11-29 04:32:23,856 INFO L281 CegarLoopForPetriNet]: 176 programPoint places, 1 predicate places. [2023-11-29 04:32:23,857 INFO L495 AbstractCegarLoop]: Abstraction has has 177 places, 181 transitions, 426 flow [2023-11-29 04:32:23,857 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 108.66666666666667) internal successors, (326), 3 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 04:32:23,857 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 04:32:23,858 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1] [2023-11-29 04:32:23,860 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_693b630c-c941-46aa-b3e8-204297812dc3/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 04:32:24,058 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_693b630c-c941-46aa-b3e8-204297812dc3/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 04:32:24,059 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [t2_funErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, t2_funErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, t2_funErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 88 more)] === [2023-11-29 04:32:24,059 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:32:24,059 INFO L85 PathProgramCache]: Analyzing trace with hash 1323854727, now seen corresponding path program 1 times [2023-11-29 04:32:24,060 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 04:32:24,060 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [280270063] [2023-11-29 04:32:24,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:32:24,060 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 04:32:24,060 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_693b630c-c941-46aa-b3e8-204297812dc3/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 04:32:24,061 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_693b630c-c941-46aa-b3e8-204297812dc3/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 04:32:24,063 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_693b630c-c941-46aa-b3e8-204297812dc3/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 04:32:24,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:32:24,186 INFO L262 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-29 04:32:24,187 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:32:24,195 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:32:24,195 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 04:32:24,196 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 04:32:24,196 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [280270063] [2023-11-29 04:32:24,196 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [280270063] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:32:24,196 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:32:24,196 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 04:32:24,197 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [487273096] [2023-11-29 04:32:24,197 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:32:24,197 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 04:32:24,197 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 04:32:24,198 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 04:32:24,198 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 04:32:24,199 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 108 out of 207 [2023-11-29 04:32:24,200 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 177 places, 181 transitions, 426 flow. Second operand has 3 states, 3 states have (on average 109.66666666666667) internal successors, (329), 3 states have internal predecessors, (329), 0 states have call successors, (0), 0 states 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 04:32:24,200 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 04:32:24,200 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 108 of 207 [2023-11-29 04:32:24,200 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 04:32:26,060 INFO L124 PetriNetUnfolderBase]: 7463/17579 cut-off events. [2023-11-29 04:32:26,060 INFO L125 PetriNetUnfolderBase]: For 275/277 co-relation queries the response was YES. [2023-11-29 04:32:26,105 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29341 conditions, 17579 events. 7463/17579 cut-off events. For 275/277 co-relation queries the response was YES. Maximal size of possible extension queue 556. Compared 170788 event pairs, 6385 based on Foata normal form. 2/15158 useless extension candidates. Maximal degree in co-relation 29309. Up to 11044 conditions per place. [2023-11-29 04:32:26,293 INFO L140 encePairwiseOnDemand]: 204/207 looper letters, 78 selfloop transitions, 3 changer transitions 0/185 dead transitions. [2023-11-29 04:32:26,293 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 179 places, 185 transitions, 600 flow [2023-11-29 04:32:26,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 04:32:26,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-29 04:32:26,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 403 transitions. [2023-11-29 04:32:26,296 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6489533011272142 [2023-11-29 04:32:26,296 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 403 transitions. [2023-11-29 04:32:26,296 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 403 transitions. [2023-11-29 04:32:26,296 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 04:32:26,296 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 403 transitions. [2023-11-29 04:32:26,297 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 134.33333333333334) internal successors, (403), 3 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 04:32:26,299 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 207.0) internal successors, (828), 4 states have internal predecessors, (828), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:32:26,299 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 207.0) internal successors, (828), 4 states have internal predecessors, (828), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:32:26,300 INFO L175 Difference]: Start difference. First operand has 177 places, 181 transitions, 426 flow. Second operand 3 states and 403 transitions. [2023-11-29 04:32:26,300 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 179 places, 185 transitions, 600 flow [2023-11-29 04:32:26,302 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 177 places, 185 transitions, 590 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-29 04:32:26,305 INFO L231 Difference]: Finished difference. Result has 178 places, 181 transitions, 431 flow [2023-11-29 04:32:26,306 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=207, PETRI_DIFFERENCE_MINUEND_FLOW=416, PETRI_DIFFERENCE_MINUEND_PLACES=175, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=180, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=177, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=431, PETRI_PLACES=178, PETRI_TRANSITIONS=181} [2023-11-29 04:32:26,307 INFO L281 CegarLoopForPetriNet]: 176 programPoint places, 2 predicate places. [2023-11-29 04:32:26,307 INFO L495 AbstractCegarLoop]: Abstraction has has 178 places, 181 transitions, 431 flow [2023-11-29 04:32:26,307 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 109.66666666666667) internal successors, (329), 3 states have internal predecessors, (329), 0 states have call successors, (0), 0 states 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 04:32:26,308 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 04:32:26,308 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:32:26,311 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_693b630c-c941-46aa-b3e8-204297812dc3/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 04:32:26,508 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_693b630c-c941-46aa-b3e8-204297812dc3/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 04:32:26,508 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [t2_funErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, t2_funErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, t2_funErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 88 more)] === [2023-11-29 04:32:26,509 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:32:26,509 INFO L85 PathProgramCache]: Analyzing trace with hash 1323852372, now seen corresponding path program 1 times [2023-11-29 04:32:26,509 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 04:32:26,510 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1104773242] [2023-11-29 04:32:26,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:32:26,510 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 04:32:26,510 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_693b630c-c941-46aa-b3e8-204297812dc3/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 04:32:26,511 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_693b630c-c941-46aa-b3e8-204297812dc3/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 04:32:26,512 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_693b630c-c941-46aa-b3e8-204297812dc3/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 04:32:26,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:32:26,653 INFO L262 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-29 04:32:26,654 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:32:26,665 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 6 treesize of output 5 [2023-11-29 04:32:26,700 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 04:32:26,700 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 04:32:26,700 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 04:32:26,700 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1104773242] [2023-11-29 04:32:26,700 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1104773242] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:32:26,701 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:32:26,701 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 04:32:26,701 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2082329150] [2023-11-29 04:32:26,701 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:32:26,701 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 04:32:26,702 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 04:32:26,702 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 04:32:26,702 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 04:32:27,184 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 207 [2023-11-29 04:32:27,185 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 178 places, 181 transitions, 431 flow. Second operand has 4 states, 4 states have (on average 104.5) internal successors, (418), 4 states have internal predecessors, (418), 0 states have call successors, (0), 0 states 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 04:32:27,186 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 04:32:27,186 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 207 [2023-11-29 04:32:27,186 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 04:32:29,425 INFO L124 PetriNetUnfolderBase]: 7463/17575 cut-off events. [2023-11-29 04:32:29,426 INFO L125 PetriNetUnfolderBase]: For 290/292 co-relation queries the response was YES. [2023-11-29 04:32:29,471 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29341 conditions, 17575 events. 7463/17575 cut-off events. For 290/292 co-relation queries the response was YES. Maximal size of possible extension queue 556. Compared 170746 event pairs, 6385 based on Foata normal form. 2/15158 useless extension candidates. Maximal degree in co-relation 29305. Up to 11048 conditions per place. [2023-11-29 04:32:29,536 INFO L140 encePairwiseOnDemand]: 202/207 looper letters, 75 selfloop transitions, 4 changer transitions 0/179 dead transitions. [2023-11-29 04:32:29,536 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 179 places, 179 transitions, 585 flow [2023-11-29 04:32:29,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 04:32:29,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-29 04:32:29,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 489 transitions. [2023-11-29 04:32:29,540 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5905797101449275 [2023-11-29 04:32:29,540 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 489 transitions. [2023-11-29 04:32:29,540 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 489 transitions. [2023-11-29 04:32:29,541 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 04:32:29,541 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 489 transitions. [2023-11-29 04:32:29,542 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 122.25) internal successors, (489), 4 states have internal predecessors, (489), 0 states have call successors, (0), 0 states 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 04:32:29,545 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 207.0) internal successors, (1035), 5 states have internal predecessors, (1035), 0 states have call successors, (0), 0 states 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 04:32:29,545 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 207.0) internal successors, (1035), 5 states have internal predecessors, (1035), 0 states have call successors, (0), 0 states 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 04:32:29,546 INFO L175 Difference]: Start difference. First operand has 178 places, 181 transitions, 431 flow. Second operand 4 states and 489 transitions. [2023-11-29 04:32:29,546 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 179 places, 179 transitions, 585 flow [2023-11-29 04:32:29,548 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 178 places, 179 transitions, 582 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-29 04:32:29,551 INFO L231 Difference]: Finished difference. Result has 178 places, 179 transitions, 432 flow [2023-11-29 04:32:29,552 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=207, PETRI_DIFFERENCE_MINUEND_FLOW=424, PETRI_DIFFERENCE_MINUEND_PLACES=175, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=179, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=175, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=432, PETRI_PLACES=178, PETRI_TRANSITIONS=179} [2023-11-29 04:32:29,552 INFO L281 CegarLoopForPetriNet]: 176 programPoint places, 2 predicate places. [2023-11-29 04:32:29,553 INFO L495 AbstractCegarLoop]: Abstraction has has 178 places, 179 transitions, 432 flow [2023-11-29 04:32:29,553 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 104.5) internal successors, (418), 4 states have internal predecessors, (418), 0 states have call successors, (0), 0 states 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 04:32:29,553 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 04:32:29,553 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:32:29,556 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_693b630c-c941-46aa-b3e8-204297812dc3/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)] Ended with exit code 0 [2023-11-29 04:32:29,753 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_693b630c-c941-46aa-b3e8-204297812dc3/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 04:32:29,754 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [t2_funErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, t2_funErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, t2_funErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 88 more)] === [2023-11-29 04:32:29,754 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:32:29,755 INFO L85 PathProgramCache]: Analyzing trace with hash 1323852371, now seen corresponding path program 1 times [2023-11-29 04:32:29,755 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 04:32:29,755 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [162220533] [2023-11-29 04:32:29,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:32:29,755 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 04:32:29,756 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_693b630c-c941-46aa-b3e8-204297812dc3/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 04:32:29,757 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_693b630c-c941-46aa-b3e8-204297812dc3/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 04:32:29,758 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_693b630c-c941-46aa-b3e8-204297812dc3/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 04:32:29,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:32:29,895 INFO L262 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-29 04:32:29,897 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:32:29,903 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 6 treesize of output 7 [2023-11-29 04:32:29,924 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 04:32:29,924 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 04:32:29,924 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 04:32:29,925 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [162220533] [2023-11-29 04:32:29,925 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [162220533] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:32:29,925 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:32:29,925 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 04:32:29,925 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1647216160] [2023-11-29 04:32:29,926 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:32:29,926 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 04:32:29,926 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 04:32:29,927 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 04:32:29,927 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 04:32:30,228 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 101 out of 207 [2023-11-29 04:32:30,229 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 178 places, 179 transitions, 432 flow. Second operand has 4 states, 4 states have (on average 102.75) internal successors, (411), 4 states have internal predecessors, (411), 0 states have call successors, (0), 0 states 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 04:32:30,229 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 04:32:30,229 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 101 of 207 [2023-11-29 04:32:30,229 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 04:32:32,600 INFO L124 PetriNetUnfolderBase]: 7463/17571 cut-off events. [2023-11-29 04:32:32,600 INFO L125 PetriNetUnfolderBase]: For 275/277 co-relation queries the response was YES. [2023-11-29 04:32:32,642 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29345 conditions, 17571 events. 7463/17571 cut-off events. For 275/277 co-relation queries the response was YES. Maximal size of possible extension queue 556. Compared 170704 event pairs, 6385 based on Foata normal form. 2/15156 useless extension candidates. Maximal degree in co-relation 29309. Up to 11046 conditions per place. [2023-11-29 04:32:32,696 INFO L140 encePairwiseOnDemand]: 200/207 looper letters, 72 selfloop transitions, 7 changer transitions 0/177 dead transitions. [2023-11-29 04:32:32,696 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 180 places, 177 transitions, 586 flow [2023-11-29 04:32:32,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 04:32:32,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-29 04:32:32,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 582 transitions. [2023-11-29 04:32:32,700 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5623188405797102 [2023-11-29 04:32:32,700 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 582 transitions. [2023-11-29 04:32:32,700 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 582 transitions. [2023-11-29 04:32:32,701 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 04:32:32,701 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 582 transitions. [2023-11-29 04:32:32,703 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 116.4) internal successors, (582), 5 states have internal predecessors, (582), 0 states have call successors, (0), 0 states 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 04:32:32,706 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 207.0) internal successors, (1242), 6 states have internal predecessors, (1242), 0 states have call successors, (0), 0 states 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 04:32:32,707 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 207.0) internal successors, (1242), 6 states have internal predecessors, (1242), 0 states have call successors, (0), 0 states 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 04:32:32,707 INFO L175 Difference]: Start difference. First operand has 178 places, 179 transitions, 432 flow. Second operand 5 states and 582 transitions. [2023-11-29 04:32:32,707 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 180 places, 177 transitions, 586 flow [2023-11-29 04:32:32,710 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 177 places, 177 transitions, 578 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-11-29 04:32:32,713 INFO L231 Difference]: Finished difference. Result has 177 places, 177 transitions, 434 flow [2023-11-29 04:32:32,713 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=207, PETRI_DIFFERENCE_MINUEND_FLOW=420, PETRI_DIFFERENCE_MINUEND_PLACES=173, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=177, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=170, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=434, PETRI_PLACES=177, PETRI_TRANSITIONS=177} [2023-11-29 04:32:32,714 INFO L281 CegarLoopForPetriNet]: 176 programPoint places, 1 predicate places. [2023-11-29 04:32:32,714 INFO L495 AbstractCegarLoop]: Abstraction has has 177 places, 177 transitions, 434 flow [2023-11-29 04:32:32,714 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 102.75) internal successors, (411), 4 states have internal predecessors, (411), 0 states have call successors, (0), 0 states 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 04:32:32,714 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 04:32:32,714 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:32:32,717 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_693b630c-c941-46aa-b3e8-204297812dc3/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)] Ended with exit code 0 [2023-11-29 04:32:32,915 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_693b630c-c941-46aa-b3e8-204297812dc3/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 04:32:32,915 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [t2_funErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, t2_funErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, t2_funErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 88 more)] === [2023-11-29 04:32:32,915 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:32:32,915 INFO L85 PathProgramCache]: Analyzing trace with hash 911840466, now seen corresponding path program 1 times [2023-11-29 04:32:32,916 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 04:32:32,916 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1687239757] [2023-11-29 04:32:32,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:32:32,916 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 04:32:32,917 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_693b630c-c941-46aa-b3e8-204297812dc3/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 04:32:32,918 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_693b630c-c941-46aa-b3e8-204297812dc3/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 04:32:32,919 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_693b630c-c941-46aa-b3e8-204297812dc3/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 04:32:33,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:32:33,165 INFO L262 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 10 conjunts are in the unsatisfiable core [2023-11-29 04:32:33,167 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:32:33,238 INFO L349 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2023-11-29 04:32:33,239 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 14 treesize of output 20 [2023-11-29 04:32:33,291 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 04:32:33,291 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 04:32:33,291 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 04:32:33,291 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1687239757] [2023-11-29 04:32:33,292 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1687239757] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:32:33,292 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:32:33,292 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 04:32:33,292 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [824035914] [2023-11-29 04:32:33,292 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:32:33,292 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 04:32:33,293 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 04:32:33,293 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 04:32:33,293 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 04:32:33,633 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 104 out of 207 [2023-11-29 04:32:33,634 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 177 places, 177 transitions, 434 flow. Second operand has 4 states, 4 states have (on average 105.75) internal successors, (423), 4 states have internal predecessors, (423), 0 states have call successors, (0), 0 states 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 04:32:33,634 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 04:32:33,634 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 104 of 207 [2023-11-29 04:32:33,635 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 04:32:35,732 INFO L124 PetriNetUnfolderBase]: 7529/16650 cut-off events. [2023-11-29 04:32:35,732 INFO L125 PetriNetUnfolderBase]: For 339/351 co-relation queries the response was YES. [2023-11-29 04:32:35,772 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28741 conditions, 16650 events. 7529/16650 cut-off events. For 339/351 co-relation queries the response was YES. Maximal size of possible extension queue 542. Compared 155844 event pairs, 4501 based on Foata normal form. 12/14538 useless extension candidates. Maximal degree in co-relation 28703. Up to 7854 conditions per place. [2023-11-29 04:32:35,829 INFO L140 encePairwiseOnDemand]: 201/207 looper letters, 120 selfloop transitions, 5 changer transitions 0/221 dead transitions. [2023-11-29 04:32:35,829 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 178 places, 221 transitions, 772 flow [2023-11-29 04:32:35,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 04:32:35,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-29 04:32:35,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 539 transitions. [2023-11-29 04:32:35,831 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6509661835748792 [2023-11-29 04:32:35,831 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 539 transitions. [2023-11-29 04:32:35,832 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 539 transitions. [2023-11-29 04:32:35,832 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 04:32:35,832 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 539 transitions. [2023-11-29 04:32:35,833 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 134.75) internal successors, (539), 4 states have internal predecessors, (539), 0 states have call successors, (0), 0 states 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 04:32:35,835 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 207.0) internal successors, (1035), 5 states have internal predecessors, (1035), 0 states have call successors, (0), 0 states 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 04:32:35,835 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 207.0) internal successors, (1035), 5 states have internal predecessors, (1035), 0 states have call successors, (0), 0 states 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 04:32:35,836 INFO L175 Difference]: Start difference. First operand has 177 places, 177 transitions, 434 flow. Second operand 4 states and 539 transitions. [2023-11-29 04:32:35,836 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 178 places, 221 transitions, 772 flow [2023-11-29 04:32:35,838 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 174 places, 221 transitions, 758 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-11-29 04:32:35,840 INFO L231 Difference]: Finished difference. Result has 174 places, 175 transitions, 426 flow [2023-11-29 04:32:35,841 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=207, PETRI_DIFFERENCE_MINUEND_FLOW=416, PETRI_DIFFERENCE_MINUEND_PLACES=171, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=175, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=170, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=426, PETRI_PLACES=174, PETRI_TRANSITIONS=175} [2023-11-29 04:32:35,842 INFO L281 CegarLoopForPetriNet]: 176 programPoint places, -2 predicate places. [2023-11-29 04:32:35,842 INFO L495 AbstractCegarLoop]: Abstraction has has 174 places, 175 transitions, 426 flow [2023-11-29 04:32:35,842 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 105.75) internal successors, (423), 4 states have internal predecessors, (423), 0 states have call successors, (0), 0 states 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 04:32:35,842 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 04:32:35,842 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:32:35,847 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_693b630c-c941-46aa-b3e8-204297812dc3/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)] Ended with exit code 0 [2023-11-29 04:32:36,043 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_693b630c-c941-46aa-b3e8-204297812dc3/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 04:32:36,043 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [t2_funErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, t2_funErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, t2_funErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 88 more)] === [2023-11-29 04:32:36,044 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:32:36,044 INFO L85 PathProgramCache]: Analyzing trace with hash 911840467, now seen corresponding path program 1 times [2023-11-29 04:32:36,044 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 04:32:36,044 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1518848009] [2023-11-29 04:32:36,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:32:36,044 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 04:32:36,045 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_693b630c-c941-46aa-b3e8-204297812dc3/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 04:32:36,046 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_693b630c-c941-46aa-b3e8-204297812dc3/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 04:32:36,047 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_693b630c-c941-46aa-b3e8-204297812dc3/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 04:32:36,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:32:36,324 INFO L262 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 14 conjunts are in the unsatisfiable core [2023-11-29 04:32:36,327 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:32:36,457 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 04:32:36,458 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 0 case distinctions, treesize of input 14 treesize of output 9 [2023-11-29 04:32:36,539 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 04:32:36,539 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 04:32:36,539 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 04:32:36,540 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1518848009] [2023-11-29 04:32:36,540 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1518848009] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:32:36,540 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:32:36,540 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 04:32:36,540 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1836947676] [2023-11-29 04:32:36,540 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:32:36,541 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 04:32:36,541 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 04:32:36,541 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 04:32:36,541 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-29 04:32:37,299 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 104 out of 207 [2023-11-29 04:32:37,300 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 174 places, 175 transitions, 426 flow. Second operand has 5 states, 5 states have (on average 105.4) internal successors, (527), 5 states have internal predecessors, (527), 0 states have call successors, (0), 0 states 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 04:32:37,301 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 04:32:37,301 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 104 of 207 [2023-11-29 04:32:37,301 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 04:32:39,465 INFO L124 PetriNetUnfolderBase]: 7608/17902 cut-off events. [2023-11-29 04:32:39,465 INFO L125 PetriNetUnfolderBase]: For 895/897 co-relation queries the response was YES. [2023-11-29 04:32:39,510 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30539 conditions, 17902 events. 7608/17902 cut-off events. For 895/897 co-relation queries the response was YES. Maximal size of possible extension queue 572. Compared 174774 event pairs, 6517 based on Foata normal form. 2/15447 useless extension candidates. Maximal degree in co-relation 30447. Up to 11287 conditions per place. [2023-11-29 04:32:39,569 INFO L140 encePairwiseOnDemand]: 201/207 looper letters, 83 selfloop transitions, 5 changer transitions 0/182 dead transitions. [2023-11-29 04:32:39,569 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 177 places, 182 transitions, 632 flow [2023-11-29 04:32:39,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 04:32:39,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-29 04:32:39,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 503 transitions. [2023-11-29 04:32:39,572 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.607487922705314 [2023-11-29 04:32:39,572 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 503 transitions. [2023-11-29 04:32:39,572 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 503 transitions. [2023-11-29 04:32:39,573 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 04:32:39,573 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 503 transitions. [2023-11-29 04:32:39,575 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 125.75) internal successors, (503), 4 states have internal predecessors, (503), 0 states have call successors, (0), 0 states 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 04:32:39,577 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 207.0) internal successors, (1035), 5 states have internal predecessors, (1035), 0 states have call successors, (0), 0 states 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 04:32:39,578 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 207.0) internal successors, (1035), 5 states have internal predecessors, (1035), 0 states have call successors, (0), 0 states 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 04:32:39,578 INFO L175 Difference]: Start difference. First operand has 174 places, 175 transitions, 426 flow. Second operand 4 states and 503 transitions. [2023-11-29 04:32:39,578 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 177 places, 182 transitions, 632 flow [2023-11-29 04:32:39,585 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 174 places, 182 transitions, 616 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-11-29 04:32:39,589 INFO L231 Difference]: Finished difference. Result has 176 places, 179 transitions, 462 flow [2023-11-29 04:32:39,589 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=207, PETRI_DIFFERENCE_MINUEND_FLOW=416, PETRI_DIFFERENCE_MINUEND_PLACES=171, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=175, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=170, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=462, PETRI_PLACES=176, PETRI_TRANSITIONS=179} [2023-11-29 04:32:39,590 INFO L281 CegarLoopForPetriNet]: 176 programPoint places, 0 predicate places. [2023-11-29 04:32:39,590 INFO L495 AbstractCegarLoop]: Abstraction has has 176 places, 179 transitions, 462 flow [2023-11-29 04:32:39,591 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 105.4) internal successors, (527), 5 states have internal predecessors, (527), 0 states have call successors, (0), 0 states 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 04:32:39,591 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 04:32:39,591 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:32:39,595 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_693b630c-c941-46aa-b3e8-204297812dc3/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 04:32:39,791 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_693b630c-c941-46aa-b3e8-204297812dc3/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 04:32:39,792 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr12REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [t2_funErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, t2_funErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, t2_funErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 88 more)] === [2023-11-29 04:32:39,792 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:32:39,792 INFO L85 PathProgramCache]: Analyzing trace with hash -1797715589, now seen corresponding path program 1 times [2023-11-29 04:32:39,793 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 04:32:39,793 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [497235772] [2023-11-29 04:32:39,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:32:39,793 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 04:32:39,793 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_693b630c-c941-46aa-b3e8-204297812dc3/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 04:32:39,794 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_693b630c-c941-46aa-b3e8-204297812dc3/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 04:32:39,795 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_693b630c-c941-46aa-b3e8-204297812dc3/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 04:32:40,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:32:40,074 INFO L262 TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 24 conjunts are in the unsatisfiable core [2023-11-29 04:32:40,078 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:32:40,182 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 11 treesize of output 7 [2023-11-29 04:32:40,262 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 0 case distinctions, treesize of input 28 treesize of output 27 [2023-11-29 04:32:40,365 INFO L349 Elim1Store]: treesize reduction 17, result has 19.0 percent of original size [2023-11-29 04:32:40,366 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 18 treesize of output 16 [2023-11-29 04:32:40,456 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 0 case distinctions, treesize of input 32 treesize of output 25 [2023-11-29 04:32:40,536 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 0 case distinctions, treesize of input 32 treesize of output 25 [2023-11-29 04:32:40,579 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 0 case distinctions, treesize of input 25 treesize of output 18 [2023-11-29 04:32:40,679 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 04:32:40,680 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 04:32:40,680 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 04:32:40,680 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [497235772] [2023-11-29 04:32:40,680 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [497235772] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:32:40,680 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:32:40,680 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-29 04:32:40,680 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [206323142] [2023-11-29 04:32:40,680 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:32:40,681 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-29 04:32:40,681 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 04:32:40,682 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-29 04:32:40,682 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2023-11-29 04:32:43,012 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 95 out of 207 [2023-11-29 04:32:43,014 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 176 places, 179 transitions, 462 flow. Second operand has 10 states, 10 states have (on average 96.0) internal successors, (960), 10 states have internal predecessors, (960), 0 states have call successors, (0), 0 states 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 04:32:43,014 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 04:32:43,014 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 95 of 207 [2023-11-29 04:32:43,014 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 04:32:46,707 INFO L124 PetriNetUnfolderBase]: 7530/16678 cut-off events. [2023-11-29 04:32:46,707 INFO L125 PetriNetUnfolderBase]: For 338/350 co-relation queries the response was YES. [2023-11-29 04:32:46,754 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28815 conditions, 16678 events. 7530/16678 cut-off events. For 338/350 co-relation queries the response was YES. Maximal size of possible extension queue 542. Compared 156444 event pairs, 4501 based on Foata normal form. 10/14566 useless extension candidates. Maximal degree in co-relation 28722. Up to 7866 conditions per place. [2023-11-29 04:32:46,813 INFO L140 encePairwiseOnDemand]: 195/207 looper letters, 128 selfloop transitions, 16 changer transitions 0/234 dead transitions. [2023-11-29 04:32:46,813 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 186 places, 234 transitions, 868 flow [2023-11-29 04:32:46,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-29 04:32:46,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-11-29 04:32:46,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1182 transitions. [2023-11-29 04:32:46,818 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5191040843214756 [2023-11-29 04:32:46,818 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1182 transitions. [2023-11-29 04:32:46,818 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1182 transitions. [2023-11-29 04:32:46,819 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 04:32:46,819 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1182 transitions. [2023-11-29 04:32:46,822 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 107.45454545454545) internal successors, (1182), 11 states have internal predecessors, (1182), 0 states have call successors, (0), 0 states 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 04:32:46,826 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 207.0) internal successors, (2484), 12 states have internal predecessors, (2484), 0 states have call successors, (0), 0 states 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 04:32:46,827 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 207.0) internal successors, (2484), 12 states have internal predecessors, (2484), 0 states have call successors, (0), 0 states 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 04:32:46,827 INFO L175 Difference]: Start difference. First operand has 176 places, 179 transitions, 462 flow. Second operand 11 states and 1182 transitions. [2023-11-29 04:32:46,827 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 186 places, 234 transitions, 868 flow [2023-11-29 04:32:46,829 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 185 places, 234 transitions, 866 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-29 04:32:46,832 INFO L231 Difference]: Finished difference. Result has 190 places, 185 transitions, 541 flow [2023-11-29 04:32:46,833 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=207, PETRI_DIFFERENCE_MINUEND_FLOW=460, PETRI_DIFFERENCE_MINUEND_PLACES=175, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=179, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=163, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=541, PETRI_PLACES=190, PETRI_TRANSITIONS=185} [2023-11-29 04:32:46,834 INFO L281 CegarLoopForPetriNet]: 176 programPoint places, 14 predicate places. [2023-11-29 04:32:46,834 INFO L495 AbstractCegarLoop]: Abstraction has has 190 places, 185 transitions, 541 flow [2023-11-29 04:32:46,835 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 96.0) internal successors, (960), 10 states have internal predecessors, (960), 0 states have call successors, (0), 0 states 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 04:32:46,835 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 04:32:46,835 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:32:46,839 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_693b630c-c941-46aa-b3e8-204297812dc3/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)] Forceful destruction successful, exit code 0 [2023-11-29 04:32:47,035 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_693b630c-c941-46aa-b3e8-204297812dc3/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 04:32:47,036 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [t2_funErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, t2_funErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, t2_funErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 88 more)] === [2023-11-29 04:32:47,036 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:32:47,036 INFO L85 PathProgramCache]: Analyzing trace with hash -1797715588, now seen corresponding path program 1 times [2023-11-29 04:32:47,037 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 04:32:47,037 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [727102344] [2023-11-29 04:32:47,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:32:47,037 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 04:32:47,037 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_693b630c-c941-46aa-b3e8-204297812dc3/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 04:32:47,038 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_693b630c-c941-46aa-b3e8-204297812dc3/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 04:32:47,039 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_693b630c-c941-46aa-b3e8-204297812dc3/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 04:32:47,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:32:47,252 INFO L262 TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 35 conjunts are in the unsatisfiable core [2023-11-29 04:32:47,255 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:32:47,379 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 11 treesize of output 7 [2023-11-29 04:32:47,403 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 11 treesize of output 7 [2023-11-29 04:32:47,490 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 0 case distinctions, treesize of input 19 treesize of output 18 [2023-11-29 04:32:47,512 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 0 case distinctions, treesize of input 19 treesize of output 18 [2023-11-29 04:32:47,629 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2023-11-29 04:32:47,629 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2023-11-29 04:32:47,642 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 0 case distinctions, treesize of input 14 treesize of output 9 [2023-11-29 04:32:47,752 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 0 case distinctions, treesize of input 23 treesize of output 16 [2023-11-29 04:32:47,769 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 0 case distinctions, treesize of input 23 treesize of output 16 [2023-11-29 04:32:47,860 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 0 case distinctions, treesize of input 23 treesize of output 16 [2023-11-29 04:32:47,880 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 0 case distinctions, treesize of input 23 treesize of output 16 [2023-11-29 04:32:47,940 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 0 case distinctions, treesize of input 23 treesize of output 16 [2023-11-29 04:32:47,946 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 0 case distinctions, treesize of input 23 treesize of output 16 [2023-11-29 04:32:48,055 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 04:32:48,056 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 04:32:48,056 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 04:32:48,056 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [727102344] [2023-11-29 04:32:48,056 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [727102344] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:32:48,056 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:32:48,056 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-29 04:32:48,057 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [92927124] [2023-11-29 04:32:48,057 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:32:48,057 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-29 04:32:48,057 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 04:32:48,058 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-29 04:32:48,058 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2023-11-29 04:32:51,387 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 207 [2023-11-29 04:32:51,388 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 190 places, 185 transitions, 541 flow. Second operand has 10 states, 10 states have (on average 90.0) internal successors, (900), 10 states have internal predecessors, (900), 0 states have call successors, (0), 0 states 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 04:32:51,389 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 04:32:51,389 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 207 [2023-11-29 04:32:51,389 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 04:32:54,965 INFO L124 PetriNetUnfolderBase]: 7608/17899 cut-off events. [2023-11-29 04:32:54,966 INFO L125 PetriNetUnfolderBase]: For 909/911 co-relation queries the response was YES. [2023-11-29 04:32:55,036 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30617 conditions, 17899 events. 7608/17899 cut-off events. For 909/911 co-relation queries the response was YES. Maximal size of possible extension queue 572. Compared 174698 event pairs, 6517 based on Foata normal form. 1/15462 useless extension candidates. Maximal degree in co-relation 30479. Up to 11300 conditions per place. [2023-11-29 04:32:55,101 INFO L140 encePairwiseOnDemand]: 195/207 looper letters, 103 selfloop transitions, 11 changer transitions 0/200 dead transitions. [2023-11-29 04:32:55,101 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 200 places, 200 transitions, 822 flow [2023-11-29 04:32:55,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-29 04:32:55,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-11-29 04:32:55,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1088 transitions. [2023-11-29 04:32:55,107 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47782169521299955 [2023-11-29 04:32:55,107 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1088 transitions. [2023-11-29 04:32:55,107 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1088 transitions. [2023-11-29 04:32:55,108 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 04:32:55,108 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1088 transitions. [2023-11-29 04:32:55,112 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 98.9090909090909) internal successors, (1088), 11 states have internal predecessors, (1088), 0 states have call successors, (0), 0 states 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 04:32:55,117 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 207.0) internal successors, (2484), 12 states have internal predecessors, (2484), 0 states have call successors, (0), 0 states 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 04:32:55,118 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 207.0) internal successors, (2484), 12 states have internal predecessors, (2484), 0 states have call successors, (0), 0 states 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 04:32:55,118 INFO L175 Difference]: Start difference. First operand has 190 places, 185 transitions, 541 flow. Second operand 11 states and 1088 transitions. [2023-11-29 04:32:55,118 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 200 places, 200 transitions, 822 flow [2023-11-29 04:32:55,126 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 195 places, 200 transitions, 802 flow, removed 0 selfloop flow, removed 5 redundant places. [2023-11-29 04:32:55,129 INFO L231 Difference]: Finished difference. Result has 199 places, 189 transitions, 582 flow [2023-11-29 04:32:55,130 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=207, PETRI_DIFFERENCE_MINUEND_FLOW=523, PETRI_DIFFERENCE_MINUEND_PLACES=185, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=185, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=174, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=582, PETRI_PLACES=199, PETRI_TRANSITIONS=189} [2023-11-29 04:32:55,130 INFO L281 CegarLoopForPetriNet]: 176 programPoint places, 23 predicate places. [2023-11-29 04:32:55,131 INFO L495 AbstractCegarLoop]: Abstraction has has 199 places, 189 transitions, 582 flow [2023-11-29 04:32:55,131 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 90.0) internal successors, (900), 10 states have internal predecessors, (900), 0 states have call successors, (0), 0 states 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 04:32:55,131 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 04:32:55,131 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:32:55,135 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_693b630c-c941-46aa-b3e8-204297812dc3/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 04:32:55,332 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_693b630c-c941-46aa-b3e8-204297812dc3/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 04:32:55,332 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr15REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [t2_funErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, t2_funErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, t2_funErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 88 more)] === [2023-11-29 04:32:55,332 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:32:55,332 INFO L85 PathProgramCache]: Analyzing trace with hash 105392512, now seen corresponding path program 1 times [2023-11-29 04:32:55,333 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 04:32:55,333 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1073369417] [2023-11-29 04:32:55,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:32:55,333 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 04:32:55,333 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_693b630c-c941-46aa-b3e8-204297812dc3/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 04:32:55,334 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_693b630c-c941-46aa-b3e8-204297812dc3/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 04:32:55,335 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_693b630c-c941-46aa-b3e8-204297812dc3/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 04:32:55,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:32:55,499 INFO L262 TraceCheckSpWp]: Trace formula consists of 177 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-29 04:32:55,501 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:32:55,507 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 6 treesize of output 5 [2023-11-29 04:32:55,552 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 04:32:55,553 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 04:32:55,553 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 04:32:55,553 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1073369417] [2023-11-29 04:32:55,553 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1073369417] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:32:55,553 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:32:55,553 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 04:32:55,553 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1027462164] [2023-11-29 04:32:55,553 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:32:55,554 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 04:32:55,554 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 04:32:55,554 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 04:32:55,554 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 04:32:55,878 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 105 out of 207 [2023-11-29 04:32:55,878 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 199 places, 189 transitions, 582 flow. Second operand has 4 states, 4 states have (on average 107.0) internal successors, (428), 4 states have internal predecessors, (428), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:32:55,878 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 04:32:55,879 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 105 of 207 [2023-11-29 04:32:55,879 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 04:32:58,094 INFO L124 PetriNetUnfolderBase]: 7464/17586 cut-off events. [2023-11-29 04:32:58,094 INFO L125 PetriNetUnfolderBase]: For 354/356 co-relation queries the response was YES. [2023-11-29 04:32:58,167 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29448 conditions, 17586 events. 7464/17586 cut-off events. For 354/356 co-relation queries the response was YES. Maximal size of possible extension queue 556. Compared 171037 event pairs, 6385 based on Foata normal form. 8/15183 useless extension candidates. Maximal degree in co-relation 29330. Up to 11045 conditions per place. [2023-11-29 04:32:58,219 INFO L140 encePairwiseOnDemand]: 202/207 looper letters, 77 selfloop transitions, 11 changer transitions 0/187 dead transitions. [2023-11-29 04:32:58,219 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 200 places, 187 transitions, 754 flow [2023-11-29 04:32:58,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 04:32:58,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-29 04:32:58,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 495 transitions. [2023-11-29 04:32:58,221 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5978260869565217 [2023-11-29 04:32:58,221 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 495 transitions. [2023-11-29 04:32:58,221 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 495 transitions. [2023-11-29 04:32:58,222 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 04:32:58,222 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 495 transitions. [2023-11-29 04:32:58,223 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 123.75) internal successors, (495), 4 states have internal predecessors, (495), 0 states have call successors, (0), 0 states 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 04:32:58,225 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 207.0) internal successors, (1035), 5 states have internal predecessors, (1035), 0 states have call successors, (0), 0 states 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 04:32:58,225 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 207.0) internal successors, (1035), 5 states have internal predecessors, (1035), 0 states have call successors, (0), 0 states 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 04:32:58,225 INFO L175 Difference]: Start difference. First operand has 199 places, 189 transitions, 582 flow. Second operand 4 states and 495 transitions. [2023-11-29 04:32:58,225 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 200 places, 187 transitions, 754 flow [2023-11-29 04:32:58,228 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 198 places, 187 transitions, 750 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-29 04:32:58,230 INFO L231 Difference]: Finished difference. Result has 198 places, 187 transitions, 596 flow [2023-11-29 04:32:58,231 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=207, PETRI_DIFFERENCE_MINUEND_FLOW=574, PETRI_DIFFERENCE_MINUEND_PLACES=195, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=187, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=176, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=596, PETRI_PLACES=198, PETRI_TRANSITIONS=187} [2023-11-29 04:32:58,231 INFO L281 CegarLoopForPetriNet]: 176 programPoint places, 22 predicate places. [2023-11-29 04:32:58,231 INFO L495 AbstractCegarLoop]: Abstraction has has 198 places, 187 transitions, 596 flow [2023-11-29 04:32:58,232 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 107.0) internal successors, (428), 4 states have internal predecessors, (428), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:32:58,232 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 04:32:58,232 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:32:58,235 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_693b630c-c941-46aa-b3e8-204297812dc3/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 04:32:58,432 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_693b630c-c941-46aa-b3e8-204297812dc3/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 04:32:58,433 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr14REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [t2_funErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, t2_funErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, t2_funErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 88 more)] === [2023-11-29 04:32:58,433 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:32:58,433 INFO L85 PathProgramCache]: Analyzing trace with hash 105392511, now seen corresponding path program 1 times [2023-11-29 04:32:58,433 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 04:32:58,433 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1124842895] [2023-11-29 04:32:58,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:32:58,434 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 04:32:58,434 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_693b630c-c941-46aa-b3e8-204297812dc3/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 04:32:58,435 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_693b630c-c941-46aa-b3e8-204297812dc3/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 04:32:58,436 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_693b630c-c941-46aa-b3e8-204297812dc3/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 04:32:58,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:32:58,583 INFO L262 TraceCheckSpWp]: Trace formula consists of 177 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-29 04:32:58,584 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:32:58,587 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 6 treesize of output 7 [2023-11-29 04:32:58,609 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 04:32:58,609 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 04:32:58,610 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 04:32:58,610 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1124842895] [2023-11-29 04:32:58,610 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1124842895] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:32:58,610 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:32:58,610 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 04:32:58,610 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2027024018] [2023-11-29 04:32:58,610 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:32:58,610 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 04:32:58,611 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 04:32:58,611 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 04:32:58,611 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 04:32:58,790 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 207 [2023-11-29 04:32:58,791 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 198 places, 187 transitions, 596 flow. Second operand has 4 states, 4 states have (on average 105.0) internal successors, (420), 4 states have internal predecessors, (420), 0 states have call successors, (0), 0 states 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 04:32:58,791 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 04:32:58,791 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 207 [2023-11-29 04:32:58,791 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 04:33:00,967 INFO L124 PetriNetUnfolderBase]: 7464/17578 cut-off events. [2023-11-29 04:33:00,968 INFO L125 PetriNetUnfolderBase]: For 371/373 co-relation queries the response was YES. [2023-11-29 04:33:01,055 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29458 conditions, 17578 events. 7464/17578 cut-off events. For 371/373 co-relation queries the response was YES. Maximal size of possible extension queue 556. Compared 170935 event pairs, 6385 based on Foata normal form. 0/15175 useless extension candidates. Maximal degree in co-relation 29334. Up to 11045 conditions per place. [2023-11-29 04:33:01,118 INFO L140 encePairwiseOnDemand]: 202/207 looper letters, 79 selfloop transitions, 11 changer transitions 0/185 dead transitions. [2023-11-29 04:33:01,118 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 199 places, 185 transitions, 772 flow [2023-11-29 04:33:01,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 04:33:01,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-29 04:33:01,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 489 transitions. [2023-11-29 04:33:01,121 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5905797101449275 [2023-11-29 04:33:01,121 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 489 transitions. [2023-11-29 04:33:01,121 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 489 transitions. [2023-11-29 04:33:01,121 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 04:33:01,121 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 489 transitions. [2023-11-29 04:33:01,123 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 122.25) internal successors, (489), 4 states have internal predecessors, (489), 0 states have call successors, (0), 0 states 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 04:33:01,124 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 207.0) internal successors, (1035), 5 states have internal predecessors, (1035), 0 states have call successors, (0), 0 states 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 04:33:01,125 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 207.0) internal successors, (1035), 5 states have internal predecessors, (1035), 0 states have call successors, (0), 0 states 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 04:33:01,125 INFO L175 Difference]: Start difference. First operand has 198 places, 187 transitions, 596 flow. Second operand 4 states and 489 transitions. [2023-11-29 04:33:01,125 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 199 places, 185 transitions, 772 flow [2023-11-29 04:33:01,128 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 196 places, 185 transitions, 750 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-11-29 04:33:01,130 INFO L231 Difference]: Finished difference. Result has 196 places, 185 transitions, 592 flow [2023-11-29 04:33:01,131 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=207, PETRI_DIFFERENCE_MINUEND_FLOW=570, PETRI_DIFFERENCE_MINUEND_PLACES=193, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=185, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=174, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=592, PETRI_PLACES=196, PETRI_TRANSITIONS=185} [2023-11-29 04:33:01,131 INFO L281 CegarLoopForPetriNet]: 176 programPoint places, 20 predicate places. [2023-11-29 04:33:01,131 INFO L495 AbstractCegarLoop]: Abstraction has has 196 places, 185 transitions, 592 flow [2023-11-29 04:33:01,132 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 105.0) internal successors, (420), 4 states have internal predecessors, (420), 0 states have call successors, (0), 0 states 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 04:33:01,132 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 04:33:01,132 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:33:01,136 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_693b630c-c941-46aa-b3e8-204297812dc3/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 04:33:01,332 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_693b630c-c941-46aa-b3e8-204297812dc3/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 04:33:01,333 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [t2_funErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, t2_funErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, t2_funErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 88 more)] === [2023-11-29 04:33:01,333 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:33:01,333 INFO L85 PathProgramCache]: Analyzing trace with hash -1401809193, now seen corresponding path program 1 times [2023-11-29 04:33:01,333 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 04:33:01,334 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [205371144] [2023-11-29 04:33:01,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:33:01,334 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 04:33:01,334 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_693b630c-c941-46aa-b3e8-204297812dc3/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 04:33:01,335 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_693b630c-c941-46aa-b3e8-204297812dc3/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 04:33:01,336 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_693b630c-c941-46aa-b3e8-204297812dc3/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 04:33:01,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:33:01,538 INFO L262 TraceCheckSpWp]: Trace formula consists of 224 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-29 04:33:01,539 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:33:01,561 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:33:01,561 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 04:33:01,605 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:33:01,605 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 04:33:01,605 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [205371144] [2023-11-29 04:33:01,605 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [205371144] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 04:33:01,605 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 04:33:01,606 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2023-11-29 04:33:01,606 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [806867476] [2023-11-29 04:33:01,606 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 04:33:01,606 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-29 04:33:01,606 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 04:33:01,607 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-29 04:33:01,607 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-11-29 04:33:01,608 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 108 out of 207 [2023-11-29 04:33:01,609 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 196 places, 185 transitions, 592 flow. Second operand has 6 states, 6 states have (on average 110.83333333333333) internal successors, (665), 6 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 04:33:01,609 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 04:33:01,609 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 108 of 207 [2023-11-29 04:33:01,609 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 04:33:04,253 INFO L124 PetriNetUnfolderBase]: 7464/17628 cut-off events. [2023-11-29 04:33:04,253 INFO L125 PetriNetUnfolderBase]: For 462/464 co-relation queries the response was YES. [2023-11-29 04:33:04,328 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29592 conditions, 17628 events. 7464/17628 cut-off events. For 462/464 co-relation queries the response was YES. Maximal size of possible extension queue 557. Compared 171419 event pairs, 6385 based on Foata normal form. 6/15227 useless extension candidates. Maximal degree in co-relation 29399. Up to 11041 conditions per place. [2023-11-29 04:33:04,382 INFO L140 encePairwiseOnDemand]: 203/207 looper letters, 92 selfloop transitions, 11 changer transitions 0/200 dead transitions. [2023-11-29 04:33:04,382 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 201 places, 200 transitions, 910 flow [2023-11-29 04:33:04,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-29 04:33:04,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-29 04:33:04,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 740 transitions. [2023-11-29 04:33:04,385 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5958132045088567 [2023-11-29 04:33:04,385 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 740 transitions. [2023-11-29 04:33:04,385 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 740 transitions. [2023-11-29 04:33:04,386 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 04:33:04,386 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 740 transitions. [2023-11-29 04:33:04,387 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 123.33333333333333) internal successors, (740), 6 states have internal predecessors, (740), 0 states have call successors, (0), 0 states 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 04:33:04,389 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 207.0) internal successors, (1449), 7 states have internal predecessors, (1449), 0 states have call successors, (0), 0 states 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 04:33:04,390 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 207.0) internal successors, (1449), 7 states have internal predecessors, (1449), 0 states have call successors, (0), 0 states 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 04:33:04,390 INFO L175 Difference]: Start difference. First operand has 196 places, 185 transitions, 592 flow. Second operand 6 states and 740 transitions. [2023-11-29 04:33:04,390 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 201 places, 200 transitions, 910 flow [2023-11-29 04:33:04,393 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 198 places, 200 transitions, 866 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-11-29 04:33:04,396 INFO L231 Difference]: Finished difference. Result has 202 places, 190 transitions, 658 flow [2023-11-29 04:33:04,396 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=207, PETRI_DIFFERENCE_MINUEND_FLOW=570, PETRI_DIFFERENCE_MINUEND_PLACES=193, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=185, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=178, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=658, PETRI_PLACES=202, PETRI_TRANSITIONS=190} [2023-11-29 04:33:04,397 INFO L281 CegarLoopForPetriNet]: 176 programPoint places, 26 predicate places. [2023-11-29 04:33:04,397 INFO L495 AbstractCegarLoop]: Abstraction has has 202 places, 190 transitions, 658 flow [2023-11-29 04:33:04,397 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 110.83333333333333) internal successors, (665), 6 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 04:33:04,397 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 04:33:04,397 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:33:04,403 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_693b630c-c941-46aa-b3e8-204297812dc3/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 04:33:04,598 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_693b630c-c941-46aa-b3e8-204297812dc3/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 04:33:04,598 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [t2_funErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, t2_funErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, t2_funErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 88 more)] === [2023-11-29 04:33:04,598 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:33:04,598 INFO L85 PathProgramCache]: Analyzing trace with hash -1399858132, now seen corresponding path program 1 times [2023-11-29 04:33:04,599 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 04:33:04,599 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1790546528] [2023-11-29 04:33:04,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:33:04,599 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 04:33:04,599 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_693b630c-c941-46aa-b3e8-204297812dc3/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 04:33:04,600 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_693b630c-c941-46aa-b3e8-204297812dc3/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 04:33:04,601 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_693b630c-c941-46aa-b3e8-204297812dc3/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 04:33:05,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:33:05,020 INFO L262 TraceCheckSpWp]: Trace formula consists of 298 conjuncts, 42 conjunts are in the unsatisfiable core [2023-11-29 04:33:05,024 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:33:05,030 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 6 treesize of output 5 [2023-11-29 04:33:05,186 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 15 treesize of output 11 [2023-11-29 04:33:05,199 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 23 treesize of output 1 [2023-11-29 04:33:05,248 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2023-11-29 04:33:05,248 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2023-11-29 04:33:05,277 INFO L349 Elim1Store]: treesize reduction 39, result has 25.0 percent of original size [2023-11-29 04:33:05,277 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 20 treesize of output 22 [2023-11-29 04:33:05,335 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 0 case distinctions, treesize of input 22 treesize of output 17 [2023-11-29 04:33:05,350 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 0 case distinctions, treesize of input 20 treesize of output 15 [2023-11-29 04:33:05,405 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 0 case distinctions, treesize of input 20 treesize of output 15 [2023-11-29 04:33:05,419 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 0 case distinctions, treesize of input 22 treesize of output 17 [2023-11-29 04:33:05,441 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 0 case distinctions, treesize of input 18 treesize of output 13 [2023-11-29 04:33:05,446 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 0 case distinctions, treesize of input 16 treesize of output 11 [2023-11-29 04:33:05,531 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 17 treesize of output 9 [2023-11-29 04:33:05,536 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 7 treesize of output 3 [2023-11-29 04:33:05,597 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:33:05,597 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 04:33:05,809 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse0 (bvadd |c_~#c~0.offset| (bvmul (_ bv8 32) |c_ULTIMATE.start_main_~i~0#1|)))) (and (forall ((v_ArrVal_621 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_622 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (select (select (store |c_#memory_$Pointer$#3.offset| |c_ULTIMATE.start_INIT_LIST_HEAD_~list#1.base| v_ArrVal_622) |c_~#c~0.base|) .cse0) (_ bv8 32)) (select |c_#length| (select (select (store |c_#memory_$Pointer$#3.base| |c_ULTIMATE.start_INIT_LIST_HEAD_~list#1.base| v_ArrVal_621) |c_~#c~0.base|) .cse0)))) (forall ((v_ArrVal_622 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse1 (select (select (store |c_#memory_$Pointer$#3.offset| |c_ULTIMATE.start_INIT_LIST_HEAD_~list#1.base| v_ArrVal_622) |c_~#c~0.base|) .cse0))) (bvule (bvadd .cse1 (_ bv4 32)) (bvadd .cse1 (_ bv8 32))))))) is different from false [2023-11-29 04:33:05,884 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse0 (bvadd |c_~#c~0.offset| (bvmul (_ bv8 32) |c_ULTIMATE.start_main_~i~0#1|)))) (and (forall ((v_ArrVal_621 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_622 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (select (select (store |c_#memory_$Pointer$#3.offset| |c_ULTIMATE.start_new_~p~0#1.base| v_ArrVal_622) |c_~#c~0.base|) .cse0) (_ bv8 32)) (select |c_#length| (select (select (store |c_#memory_$Pointer$#3.base| |c_ULTIMATE.start_new_~p~0#1.base| v_ArrVal_621) |c_~#c~0.base|) .cse0)))) (forall ((v_ArrVal_622 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse1 (select (select (store |c_#memory_$Pointer$#3.offset| |c_ULTIMATE.start_new_~p~0#1.base| v_ArrVal_622) |c_~#c~0.base|) .cse0))) (bvule (bvadd (_ bv4 32) .cse1) (bvadd .cse1 (_ bv8 32))))))) is different from false [2023-11-29 04:33:06,251 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 04:33:06,251 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 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 108 treesize of output 109 [2023-11-29 04:33:06,267 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 04:33:06,267 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 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 100 treesize of output 85 [2023-11-29 04:33:06,314 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 04:33:06,315 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 118 treesize of output 121 [2023-11-29 04:33:06,365 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 04:33:06,365 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 184 treesize of output 163 [2023-11-29 04:33:06,381 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 91 treesize of output 85 [2023-11-29 04:33:06,396 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 85 treesize of output 79 [2023-11-29 04:33:06,470 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 04:33:06,471 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 88 treesize of output 112 [2023-11-29 04:33:06,489 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 75 treesize of output 63 [2023-11-29 04:33:07,675 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 3 not checked. [2023-11-29 04:33:07,675 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 04:33:07,675 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1790546528] [2023-11-29 04:33:07,675 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1790546528] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 04:33:07,675 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 04:33:07,675 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2023-11-29 04:33:07,676 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1964941752] [2023-11-29 04:33:07,676 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 04:33:07,676 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-11-29 04:33:07,677 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 04:33:07,677 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-11-29 04:33:07,677 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=153, Unknown=3, NotChecked=50, Total=240 [2023-11-29 04:33:09,045 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 40 out of 207 [2023-11-29 04:33:09,046 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 202 places, 190 transitions, 658 flow. Second operand has 16 states, 16 states have (on average 42.125) internal successors, (674), 16 states have internal predecessors, (674), 0 states have call successors, (0), 0 states 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 04:33:09,046 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 04:33:09,046 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 40 of 207 [2023-11-29 04:33:09,046 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 04:33:23,277 INFO L124 PetriNetUnfolderBase]: 47994/84866 cut-off events. [2023-11-29 04:33:23,278 INFO L125 PetriNetUnfolderBase]: For 818/818 co-relation queries the response was YES. [2023-11-29 04:33:23,788 INFO L83 FinitePrefix]: Finished finitePrefix Result has 157860 conditions, 84866 events. 47994/84866 cut-off events. For 818/818 co-relation queries the response was YES. Maximal size of possible extension queue 2538. Compared 826651 event pairs, 43378 based on Foata normal form. 6/53320 useless extension candidates. Maximal degree in co-relation 157635. Up to 70881 conditions per place. [2023-11-29 04:33:24,053 INFO L140 encePairwiseOnDemand]: 198/207 looper letters, 132 selfloop transitions, 23 changer transitions 0/195 dead transitions. [2023-11-29 04:33:24,054 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 212 places, 195 transitions, 982 flow [2023-11-29 04:33:24,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-29 04:33:24,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-11-29 04:33:24,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 579 transitions. [2023-11-29 04:33:24,057 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.25428194993412384 [2023-11-29 04:33:24,057 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 579 transitions. [2023-11-29 04:33:24,057 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 579 transitions. [2023-11-29 04:33:24,057 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 04:33:24,058 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 579 transitions. [2023-11-29 04:33:24,059 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 52.63636363636363) internal successors, (579), 11 states have internal predecessors, (579), 0 states have call successors, (0), 0 states 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 04:33:24,062 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 207.0) internal successors, (2484), 12 states have internal predecessors, (2484), 0 states have call successors, (0), 0 states 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 04:33:24,062 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 207.0) internal successors, (2484), 12 states have internal predecessors, (2484), 0 states have call successors, (0), 0 states 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 04:33:24,062 INFO L175 Difference]: Start difference. First operand has 202 places, 190 transitions, 658 flow. Second operand 11 states and 579 transitions. [2023-11-29 04:33:24,063 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 212 places, 195 transitions, 982 flow [2023-11-29 04:33:24,066 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 211 places, 195 transitions, 964 flow, removed 7 selfloop flow, removed 1 redundant places. [2023-11-29 04:33:24,069 INFO L231 Difference]: Finished difference. Result has 212 places, 191 transitions, 694 flow [2023-11-29 04:33:24,069 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=207, PETRI_DIFFERENCE_MINUEND_FLOW=640, PETRI_DIFFERENCE_MINUEND_PLACES=201, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=190, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=167, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=694, PETRI_PLACES=212, PETRI_TRANSITIONS=191} [2023-11-29 04:33:24,070 INFO L281 CegarLoopForPetriNet]: 176 programPoint places, 36 predicate places. [2023-11-29 04:33:24,070 INFO L495 AbstractCegarLoop]: Abstraction has has 212 places, 191 transitions, 694 flow [2023-11-29 04:33:24,070 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 42.125) internal successors, (674), 16 states have internal predecessors, (674), 0 states have call successors, (0), 0 states 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 04:33:24,070 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 04:33:24,070 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:33:24,076 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_693b630c-c941-46aa-b3e8-204297812dc3/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)] Ended with exit code 0 [2023-11-29 04:33:24,270 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_693b630c-c941-46aa-b3e8-204297812dc3/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 04:33:24,271 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr12REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [t2_funErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, t2_funErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, t2_funErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 88 more)] === [2023-11-29 04:33:24,271 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:33:24,271 INFO L85 PathProgramCache]: Analyzing trace with hash -1399858133, now seen corresponding path program 1 times [2023-11-29 04:33:24,272 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 04:33:24,272 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2013640999] [2023-11-29 04:33:24,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:33:24,272 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 04:33:24,272 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_693b630c-c941-46aa-b3e8-204297812dc3/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 04:33:24,273 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_693b630c-c941-46aa-b3e8-204297812dc3/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 04:33:24,274 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_693b630c-c941-46aa-b3e8-204297812dc3/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 04:33:24,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:33:24,683 INFO L262 TraceCheckSpWp]: Trace formula consists of 298 conjuncts, 27 conjunts are in the unsatisfiable core [2023-11-29 04:33:24,687 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:33:24,690 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 6 treesize of output 7 [2023-11-29 04:33:24,798 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 23 treesize of output 1 [2023-11-29 04:33:24,873 INFO L349 Elim1Store]: treesize reduction 90, result has 30.2 percent of original size [2023-11-29 04:33:24,873 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 36 treesize of output 52 [2023-11-29 04:33:24,937 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 0 case distinctions, treesize of input 36 treesize of output 29 [2023-11-29 04:33:25,009 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 0 case distinctions, treesize of input 36 treesize of output 29 [2023-11-29 04:33:25,050 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 0 case distinctions, treesize of input 28 treesize of output 21 [2023-11-29 04:33:25,085 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 19 treesize of output 11 [2023-11-29 04:33:25,126 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:33:25,126 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 04:33:25,193 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_728 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (_ bv1 1) (select |c_#valid| (select (select (store |c_#memory_$Pointer$#3.base| |c_ULTIMATE.start_INIT_LIST_HEAD_~list#1.base| v_ArrVal_728) |c_~#c~0.base|) (bvadd |c_~#c~0.offset| (bvmul (_ bv8 32) |c_ULTIMATE.start_main_~i~0#1|))))))) is different from false [2023-11-29 04:33:25,380 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 04:33:25,380 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 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 29 treesize of output 30 [2023-11-29 04:33:25,398 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 04:33:25,398 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 52 treesize of output 55 [2023-11-29 04:33:25,406 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 20 treesize of output 14 [2023-11-29 04:33:26,960 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 2 not checked. [2023-11-29 04:33:26,960 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 04:33:26,960 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2013640999] [2023-11-29 04:33:26,960 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2013640999] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 04:33:26,960 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 04:33:26,960 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2023-11-29 04:33:26,961 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1450164855] [2023-11-29 04:33:26,961 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 04:33:26,961 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-11-29 04:33:26,961 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 04:33:26,962 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-11-29 04:33:26,962 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=161, Unknown=13, NotChecked=26, Total=240 [2023-11-29 04:33:27,839 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 56 out of 207 [2023-11-29 04:33:27,840 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 212 places, 191 transitions, 694 flow. Second operand has 16 states, 16 states have (on average 58.125) internal successors, (930), 16 states have internal predecessors, (930), 0 states have call successors, (0), 0 states 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 04:33:27,840 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 04:33:27,840 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 56 of 207 [2023-11-29 04:33:27,840 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 04:33:37,922 INFO L124 PetriNetUnfolderBase]: 27748/54514 cut-off events. [2023-11-29 04:33:37,922 INFO L125 PetriNetUnfolderBase]: For 725/725 co-relation queries the response was YES. [2023-11-29 04:33:38,200 INFO L83 FinitePrefix]: Finished finitePrefix Result has 97143 conditions, 54514 events. 27748/54514 cut-off events. For 725/725 co-relation queries the response was YES. Maximal size of possible extension queue 1603. Compared 552831 event pairs, 24779 based on Foata normal form. 0/40989 useless extension candidates. Maximal degree in co-relation 96901. Up to 40959 conditions per place. [2023-11-29 04:33:38,356 INFO L140 encePairwiseOnDemand]: 199/207 looper letters, 116 selfloop transitions, 22 changer transitions 0/194 dead transitions. [2023-11-29 04:33:38,356 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 220 places, 194 transitions, 978 flow [2023-11-29 04:33:38,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-29 04:33:38,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-11-29 04:33:38,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 682 transitions. [2023-11-29 04:33:38,359 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3294685990338164 [2023-11-29 04:33:38,359 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 682 transitions. [2023-11-29 04:33:38,359 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 682 transitions. [2023-11-29 04:33:38,359 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 04:33:38,359 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 682 transitions. [2023-11-29 04:33:38,361 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 68.2) internal successors, (682), 10 states have internal predecessors, (682), 0 states have call successors, (0), 0 states 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 04:33:38,363 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 207.0) internal successors, (2277), 11 states have internal predecessors, (2277), 0 states have call successors, (0), 0 states 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 04:33:38,364 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 207.0) internal successors, (2277), 11 states have internal predecessors, (2277), 0 states have call successors, (0), 0 states 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 04:33:38,364 INFO L175 Difference]: Start difference. First operand has 212 places, 191 transitions, 694 flow. Second operand 10 states and 682 transitions. [2023-11-29 04:33:38,364 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 220 places, 194 transitions, 978 flow [2023-11-29 04:33:38,369 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 209 places, 194 transitions, 897 flow, removed 11 selfloop flow, removed 11 redundant places. [2023-11-29 04:33:38,372 INFO L231 Difference]: Finished difference. Result has 209 places, 190 transitions, 653 flow [2023-11-29 04:33:38,373 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=207, PETRI_DIFFERENCE_MINUEND_FLOW=609, PETRI_DIFFERENCE_MINUEND_PLACES=200, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=190, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=168, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=653, PETRI_PLACES=209, PETRI_TRANSITIONS=190} [2023-11-29 04:33:38,373 INFO L281 CegarLoopForPetriNet]: 176 programPoint places, 33 predicate places. [2023-11-29 04:33:38,373 INFO L495 AbstractCegarLoop]: Abstraction has has 209 places, 190 transitions, 653 flow [2023-11-29 04:33:38,374 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 58.125) internal successors, (930), 16 states have internal predecessors, (930), 0 states have call successors, (0), 0 states 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 04:33:38,374 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 04:33:38,374 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 1, 1, 1, 1, 1] [2023-11-29 04:33:38,380 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_693b630c-c941-46aa-b3e8-204297812dc3/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)] Forceful destruction successful, exit code 0 [2023-11-29 04:33:38,574 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_693b630c-c941-46aa-b3e8-204297812dc3/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 04:33:38,575 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [t2_funErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, t2_funErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, t2_funErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 88 more)] === [2023-11-29 04:33:38,575 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:33:38,575 INFO L85 PathProgramCache]: Analyzing trace with hash -1233821817, now seen corresponding path program 2 times [2023-11-29 04:33:38,575 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 04:33:38,575 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [524440797] [2023-11-29 04:33:38,575 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 04:33:38,576 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 04:33:38,576 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_693b630c-c941-46aa-b3e8-204297812dc3/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 04:33:38,576 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_693b630c-c941-46aa-b3e8-204297812dc3/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 04:33:38,577 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_693b630c-c941-46aa-b3e8-204297812dc3/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 04:33:39,154 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-29 04:33:39,154 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 04:33:39,176 INFO L262 TraceCheckSpWp]: Trace formula consists of 626 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-29 04:33:39,179 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:33:39,248 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 2 proven. 58 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:33:39,248 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 04:33:39,419 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 2 proven. 58 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:33:39,419 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 04:33:39,419 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [524440797] [2023-11-29 04:33:39,420 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [524440797] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 04:33:39,420 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 04:33:39,420 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2023-11-29 04:33:39,420 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1002092270] [2023-11-29 04:33:39,420 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 04:33:39,420 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-29 04:33:39,420 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 04:33:39,421 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-29 04:33:39,421 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2023-11-29 04:33:39,423 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 108 out of 207 [2023-11-29 04:33:39,424 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 209 places, 190 transitions, 653 flow. Second operand has 12 states, 12 states have (on average 111.91666666666667) internal successors, (1343), 12 states have internal predecessors, (1343), 0 states have call successors, (0), 0 states 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 04:33:39,424 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 04:33:39,424 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 108 of 207 [2023-11-29 04:33:39,424 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 04:33:43,628 INFO L124 PetriNetUnfolderBase]: 7464/17736 cut-off events. [2023-11-29 04:33:43,628 INFO L125 PetriNetUnfolderBase]: For 750/752 co-relation queries the response was YES. [2023-11-29 04:33:43,689 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29999 conditions, 17736 events. 7464/17736 cut-off events. For 750/752 co-relation queries the response was YES. Maximal size of possible extension queue 557. Compared 171611 event pairs, 6385 based on Foata normal form. 12/15347 useless extension candidates. Maximal degree in co-relation 29596. Up to 11041 conditions per place. [2023-11-29 04:33:43,735 INFO L140 encePairwiseOnDemand]: 203/207 looper letters, 122 selfloop transitions, 23 changer transitions 0/242 dead transitions. [2023-11-29 04:33:43,735 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 220 places, 242 transitions, 1387 flow [2023-11-29 04:33:43,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-29 04:33:43,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-11-29 04:33:43,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1421 transitions. [2023-11-29 04:33:43,740 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.572061191626409 [2023-11-29 04:33:43,740 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1421 transitions. [2023-11-29 04:33:43,741 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1421 transitions. [2023-11-29 04:33:43,742 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 04:33:43,742 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1421 transitions. [2023-11-29 04:33:43,745 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 118.41666666666667) internal successors, (1421), 12 states have internal predecessors, (1421), 0 states have call successors, (0), 0 states 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 04:33:43,749 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 207.0) internal successors, (2691), 13 states have internal predecessors, (2691), 0 states have call successors, (0), 0 states 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 04:33:43,750 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 207.0) internal successors, (2691), 13 states have internal predecessors, (2691), 0 states have call successors, (0), 0 states 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 04:33:43,750 INFO L175 Difference]: Start difference. First operand has 209 places, 190 transitions, 653 flow. Second operand 12 states and 1421 transitions. [2023-11-29 04:33:43,750 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 220 places, 242 transitions, 1387 flow [2023-11-29 04:33:43,755 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 211 places, 242 transitions, 1239 flow, removed 0 selfloop flow, removed 9 redundant places. [2023-11-29 04:33:43,759 INFO L231 Difference]: Finished difference. Result has 218 places, 203 transitions, 837 flow [2023-11-29 04:33:43,759 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=207, PETRI_DIFFERENCE_MINUEND_FLOW=609, PETRI_DIFFERENCE_MINUEND_PLACES=200, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=190, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=179, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=837, PETRI_PLACES=218, PETRI_TRANSITIONS=203} [2023-11-29 04:33:43,760 INFO L281 CegarLoopForPetriNet]: 176 programPoint places, 42 predicate places. [2023-11-29 04:33:43,760 INFO L495 AbstractCegarLoop]: Abstraction has has 218 places, 203 transitions, 837 flow [2023-11-29 04:33:43,761 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 111.91666666666667) internal successors, (1343), 12 states have internal predecessors, (1343), 0 states have call successors, (0), 0 states 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 04:33:43,761 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 04:33:43,761 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 2, 1, 1, 1, 1, 1] [2023-11-29 04:33:43,771 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_693b630c-c941-46aa-b3e8-204297812dc3/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 04:33:43,961 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_693b630c-c941-46aa-b3e8-204297812dc3/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 04:33:43,961 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [t2_funErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, t2_funErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, t2_funErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 88 more)] === [2023-11-29 04:33:43,962 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:33:43,962 INFO L85 PathProgramCache]: Analyzing trace with hash -2012082809, now seen corresponding path program 3 times [2023-11-29 04:33:43,962 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 04:33:43,963 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2020286188] [2023-11-29 04:33:43,963 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-29 04:33:43,963 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 04:33:43,963 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_693b630c-c941-46aa-b3e8-204297812dc3/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 04:33:43,964 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_693b630c-c941-46aa-b3e8-204297812dc3/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 04:33:43,965 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_693b630c-c941-46aa-b3e8-204297812dc3/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 04:33:53,539 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 12 check-sat command(s) [2023-11-29 04:33:53,539 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 04:33:53,625 INFO L262 TraceCheckSpWp]: Trace formula consists of 1430 conjuncts, 13 conjunts are in the unsatisfiable core [2023-11-29 04:33:53,629 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:33:53,813 INFO L134 CoverageAnalysis]: Checked inductivity of 417 backedges. 2 proven. 415 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:33:53,813 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 04:33:54,875 INFO L134 CoverageAnalysis]: Checked inductivity of 417 backedges. 2 proven. 415 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:33:54,875 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 04:33:54,875 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2020286188] [2023-11-29 04:33:54,875 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2020286188] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 04:33:54,876 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 04:33:54,876 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 14] total 25 [2023-11-29 04:33:54,876 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1404500476] [2023-11-29 04:33:54,876 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 04:33:54,876 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2023-11-29 04:33:54,877 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 04:33:54,878 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2023-11-29 04:33:54,878 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=180, Invalid=420, Unknown=0, NotChecked=0, Total=600 [2023-11-29 04:33:54,882 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 108 out of 207 [2023-11-29 04:33:54,884 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 218 places, 203 transitions, 837 flow. Second operand has 25 states, 25 states have (on average 112.28) internal successors, (2807), 25 states have internal predecessors, (2807), 0 states have call successors, (0), 0 states 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 04:33:54,885 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 04:33:54,885 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 108 of 207 [2023-11-29 04:33:54,885 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 04:34:03,078 INFO L124 PetriNetUnfolderBase]: 7464/17976 cut-off events. [2023-11-29 04:34:03,078 INFO L125 PetriNetUnfolderBase]: For 1986/1988 co-relation queries the response was YES. [2023-11-29 04:34:03,143 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30759 conditions, 17976 events. 7464/17976 cut-off events. For 1986/1988 co-relation queries the response was YES. Maximal size of possible extension queue 557. Compared 171699 event pairs, 6385 based on Foata normal form. 24/15599 useless extension candidates. Maximal degree in co-relation 29961. Up to 11041 conditions per place. [2023-11-29 04:34:03,187 INFO L140 encePairwiseOnDemand]: 203/207 looper letters, 182 selfloop transitions, 47 changer transitions 0/326 dead transitions. [2023-11-29 04:34:03,187 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 241 places, 326 transitions, 2239 flow [2023-11-29 04:34:03,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-11-29 04:34:03,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2023-11-29 04:34:03,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 2783 transitions. [2023-11-29 04:34:03,192 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5601851851851852 [2023-11-29 04:34:03,192 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 2783 transitions. [2023-11-29 04:34:03,192 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 2783 transitions. [2023-11-29 04:34:03,192 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 04:34:03,192 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 2783 transitions. [2023-11-29 04:34:03,196 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 115.95833333333333) internal successors, (2783), 24 states have internal predecessors, (2783), 0 states have call successors, (0), 0 states 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 04:34:03,200 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 207.0) internal successors, (5175), 25 states have internal predecessors, (5175), 0 states have call successors, (0), 0 states 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 04:34:03,201 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 207.0) internal successors, (5175), 25 states have internal predecessors, (5175), 0 states have call successors, (0), 0 states 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 04:34:03,201 INFO L175 Difference]: Start difference. First operand has 218 places, 203 transitions, 837 flow. Second operand 24 states and 2783 transitions. [2023-11-29 04:34:03,201 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 241 places, 326 transitions, 2239 flow [2023-11-29 04:34:03,210 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 238 places, 326 transitions, 2227 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-11-29 04:34:03,215 INFO L231 Difference]: Finished difference. Result has 251 places, 228 transitions, 1369 flow [2023-11-29 04:34:03,215 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=207, PETRI_DIFFERENCE_MINUEND_FLOW=825, PETRI_DIFFERENCE_MINUEND_PLACES=215, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=203, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=180, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=1369, PETRI_PLACES=251, PETRI_TRANSITIONS=228} [2023-11-29 04:34:03,216 INFO L281 CegarLoopForPetriNet]: 176 programPoint places, 75 predicate places. [2023-11-29 04:34:03,216 INFO L495 AbstractCegarLoop]: Abstraction has has 251 places, 228 transitions, 1369 flow [2023-11-29 04:34:03,217 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 112.28) internal successors, (2807), 25 states have internal predecessors, (2807), 0 states have call successors, (0), 0 states 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 04:34:03,217 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 04:34:03,217 INFO L208 CegarLoopForPetriNet]: trace histogram [22, 22, 22, 22, 22, 22, 22, 22, 22, 2, 1, 1, 1, 1, 1] [2023-11-29 04:34:03,240 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_693b630c-c941-46aa-b3e8-204297812dc3/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 04:34:03,417 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_693b630c-c941-46aa-b3e8-204297812dc3/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 04:34:03,417 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [t2_funErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, t2_funErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, t2_funErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 88 more)] === [2023-11-29 04:34:03,418 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:34:03,418 INFO L85 PathProgramCache]: Analyzing trace with hash 637528455, now seen corresponding path program 4 times [2023-11-29 04:34:03,419 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 04:34:03,419 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1176472446] [2023-11-29 04:34:03,419 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-11-29 04:34:03,419 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 04:34:03,419 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_693b630c-c941-46aa-b3e8-204297812dc3/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 04:34:03,420 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_693b630c-c941-46aa-b3e8-204297812dc3/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 04:34:03,421 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_693b630c-c941-46aa-b3e8-204297812dc3/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 04:34:12,252 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-11-29 04:34:12,252 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 04:34:12,381 INFO L262 TraceCheckSpWp]: Trace formula consists of 3038 conjuncts, 24 conjunts are in the unsatisfiable core [2023-11-29 04:34:12,390 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:34:12,950 INFO L134 CoverageAnalysis]: Checked inductivity of 2103 backedges. 2 proven. 2101 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:34:12,950 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 04:34:14,502 INFO L134 CoverageAnalysis]: Checked inductivity of 2103 backedges. 2 proven. 2101 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:34:14,502 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 04:34:14,502 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1176472446] [2023-11-29 04:34:14,502 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1176472446] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 04:34:14,502 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 04:34:14,503 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25] total 48 [2023-11-29 04:34:14,503 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [230937464] [2023-11-29 04:34:14,503 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 04:34:14,504 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2023-11-29 04:34:14,505 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 04:34:14,506 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2023-11-29 04:34:14,507 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=502, Invalid=1754, Unknown=0, NotChecked=0, Total=2256 [2023-11-29 04:34:14,511 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 108 out of 207 [2023-11-29 04:34:14,514 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 251 places, 228 transitions, 1369 flow. Second operand has 48 states, 48 states have (on average 112.72916666666667) internal successors, (5411), 48 states have internal predecessors, (5411), 0 states have call successors, (0), 0 states 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 04:34:14,514 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 04:34:14,514 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 108 of 207 [2023-11-29 04:34:14,515 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 04:34:28,225 INFO L124 PetriNetUnfolderBase]: 7464/18136 cut-off events. [2023-11-29 04:34:28,225 INFO L125 PetriNetUnfolderBase]: For 5372/5374 co-relation queries the response was YES. [2023-11-29 04:34:28,358 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31482 conditions, 18136 events. 7464/18136 cut-off events. For 5372/5374 co-relation queries the response was YES. Maximal size of possible extension queue 557. Compared 171744 event pairs, 6385 based on Foata normal form. 16/15751 useless extension candidates. Maximal degree in co-relation 30308. Up to 11041 conditions per place. [2023-11-29 04:34:28,414 INFO L140 encePairwiseOnDemand]: 203/207 looper letters, 222 selfloop transitions, 63 changer transitions 0/382 dead transitions. [2023-11-29 04:34:28,414 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 282 places, 382 transitions, 3135 flow [2023-11-29 04:34:28,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2023-11-29 04:34:28,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2023-11-29 04:34:28,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 3683 transitions. [2023-11-29 04:34:28,419 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5560084541062802 [2023-11-29 04:34:28,419 INFO L72 ComplementDD]: Start complementDD. Operand 32 states and 3683 transitions. [2023-11-29 04:34:28,419 INFO L73 IsDeterministic]: Start isDeterministic. Operand 32 states and 3683 transitions. [2023-11-29 04:34:28,421 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 04:34:28,421 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 32 states and 3683 transitions. [2023-11-29 04:34:28,425 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 33 states, 32 states have (on average 115.09375) internal successors, (3683), 32 states have internal predecessors, (3683), 0 states have call successors, (0), 0 states 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 04:34:28,431 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 33 states, 33 states have (on average 207.0) internal successors, (6831), 33 states have internal predecessors, (6831), 0 states have call successors, (0), 0 states 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 04:34:28,432 INFO L81 ComplementDD]: Finished complementDD. Result has 33 states, 33 states have (on average 207.0) internal successors, (6831), 33 states have internal predecessors, (6831), 0 states have call successors, (0), 0 states 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 04:34:28,432 INFO L175 Difference]: Start difference. First operand has 251 places, 228 transitions, 1369 flow. Second operand 32 states and 3683 transitions. [2023-11-29 04:34:28,432 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 282 places, 382 transitions, 3135 flow [2023-11-29 04:34:28,447 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 273 places, 382 transitions, 3099 flow, removed 0 selfloop flow, removed 9 redundant places. [2023-11-29 04:34:28,451 INFO L231 Difference]: Finished difference. Result has 282 places, 245 transitions, 1833 flow [2023-11-29 04:34:28,452 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=207, PETRI_DIFFERENCE_MINUEND_FLOW=1333, PETRI_DIFFERENCE_MINUEND_PLACES=242, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=228, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=181, PETRI_DIFFERENCE_SUBTRAHEND_STATES=32, PETRI_FLOW=1833, PETRI_PLACES=282, PETRI_TRANSITIONS=245} [2023-11-29 04:34:28,452 INFO L281 CegarLoopForPetriNet]: 176 programPoint places, 106 predicate places. [2023-11-29 04:34:28,452 INFO L495 AbstractCegarLoop]: Abstraction has has 282 places, 245 transitions, 1833 flow [2023-11-29 04:34:28,453 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 48 states have (on average 112.72916666666667) internal successors, (5411), 48 states have internal predecessors, (5411), 0 states have call successors, (0), 0 states 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 04:34:28,454 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 04:34:28,454 INFO L208 CegarLoopForPetriNet]: trace histogram [30, 30, 30, 30, 30, 30, 30, 30, 30, 2, 1, 1, 1, 1, 1] [2023-11-29 04:34:28,487 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_693b630c-c941-46aa-b3e8-204297812dc3/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 04:34:28,654 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_693b630c-c941-46aa-b3e8-204297812dc3/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 04:34:28,654 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [t2_funErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, t2_funErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, t2_funErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 88 more)] === [2023-11-29 04:34:28,655 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:34:28,655 INFO L85 PathProgramCache]: Analyzing trace with hash -1318989433, now seen corresponding path program 5 times [2023-11-29 04:34:28,656 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 04:34:28,657 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [800004778] [2023-11-29 04:34:28,657 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-11-29 04:34:28,657 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 04:34:28,657 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_693b630c-c941-46aa-b3e8-204297812dc3/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 04:34:28,657 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_693b630c-c941-46aa-b3e8-204297812dc3/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 04:34:28,658 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_693b630c-c941-46aa-b3e8-204297812dc3/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