./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/goblint-regression/06-symbeq_15-list_entry_nr.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 527bcce2 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c30d3746-f3dd-47f2-86d5-cba23d99ec03/bin/uautomizer-verify-bycVGegfSx/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c30d3746-f3dd-47f2-86d5-cba23d99ec03/bin/uautomizer-verify-bycVGegfSx/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c30d3746-f3dd-47f2-86d5-cba23d99ec03/bin/uautomizer-verify-bycVGegfSx/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c30d3746-f3dd-47f2-86d5-cba23d99ec03/bin/uautomizer-verify-bycVGegfSx/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/goblint-regression/06-symbeq_15-list_entry_nr.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c30d3746-f3dd-47f2-86d5-cba23d99ec03/bin/uautomizer-verify-bycVGegfSx/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c30d3746-f3dd-47f2-86d5-cba23d99ec03/bin/uautomizer-verify-bycVGegfSx --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 23d465ba9caf460ed15aca3aec6b262b1ee2c4f0003cc0e5fbc446c20cfe164a --- Real Ultimate output --- This is Ultimate 0.2.3-dev-527bcce [2023-11-21 22:24:48,439 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-21 22:24:48,580 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c30d3746-f3dd-47f2-86d5-cba23d99ec03/bin/uautomizer-verify-bycVGegfSx/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2023-11-21 22:24:48,585 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-21 22:24:48,586 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-21 22:24:48,639 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-21 22:24:48,639 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-21 22:24:48,641 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-21 22:24:48,642 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-21 22:24:48,648 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-21 22:24:48,649 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-21 22:24:48,650 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-21 22:24:48,650 INFO L153 SettingsManager]: * Use SBE=true [2023-11-21 22:24:48,652 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-21 22:24:48,653 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-21 22:24:48,653 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-21 22:24:48,654 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-21 22:24:48,654 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-21 22:24:48,655 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-21 22:24:48,655 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-21 22:24:48,656 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-21 22:24:48,657 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-21 22:24:48,657 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-21 22:24:48,658 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-21 22:24:48,658 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-21 22:24:48,659 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-21 22:24:48,660 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-21 22:24:48,661 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-21 22:24:48,661 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-21 22:24:48,662 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-21 22:24:48,663 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-21 22:24:48,663 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-21 22:24:48,664 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-21 22:24:48,664 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-21 22:24:48,664 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-21 22:24:48,664 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-21 22:24:48,664 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-21 22:24:48,665 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-21 22:24:48,665 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-21 22:24:48,665 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_c30d3746-f3dd-47f2-86d5-cba23d99ec03/bin/uautomizer-verify-bycVGegfSx/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c30d3746-f3dd-47f2-86d5-cba23d99ec03/bin/uautomizer-verify-bycVGegfSx Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 23d465ba9caf460ed15aca3aec6b262b1ee2c4f0003cc0e5fbc446c20cfe164a [2023-11-21 22:24:48,995 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-21 22:24:49,031 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-21 22:24:49,035 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-21 22:24:49,037 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-21 22:24:49,037 INFO L274 PluginConnector]: CDTParser initialized [2023-11-21 22:24:49,039 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c30d3746-f3dd-47f2-86d5-cba23d99ec03/bin/uautomizer-verify-bycVGegfSx/../../sv-benchmarks/c/goblint-regression/06-symbeq_15-list_entry_nr.i [2023-11-21 22:24:52,376 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-21 22:24:52,830 INFO L384 CDTParser]: Found 1 translation units. [2023-11-21 22:24:52,831 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c30d3746-f3dd-47f2-86d5-cba23d99ec03/sv-benchmarks/c/goblint-regression/06-symbeq_15-list_entry_nr.i [2023-11-21 22:24:52,867 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c30d3746-f3dd-47f2-86d5-cba23d99ec03/bin/uautomizer-verify-bycVGegfSx/data/1a1907181/3683a0cac70e4297b11ba73f9fc7ce07/FLAG05f8a308d [2023-11-21 22:24:52,883 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c30d3746-f3dd-47f2-86d5-cba23d99ec03/bin/uautomizer-verify-bycVGegfSx/data/1a1907181/3683a0cac70e4297b11ba73f9fc7ce07 [2023-11-21 22:24:52,886 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-21 22:24:52,888 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-21 22:24:52,891 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-21 22:24:52,891 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-21 22:24:52,898 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-21 22:24:52,899 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 10:24:52" (1/1) ... [2023-11-21 22:24:52,900 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@c27af90 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:24:52, skipping insertion in model container [2023-11-21 22:24:52,900 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 10:24:52" (1/1) ... [2023-11-21 22:24:52,981 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-21 22:24:53,910 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-21 22:24:53,929 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) [2023-11-21 22:24:53,930 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@6d164300 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:24:53, skipping insertion in model container [2023-11-21 22:24:53,931 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-21 22:24:53,931 INFO L186 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2023-11-21 22:24:53,934 INFO L158 Benchmark]: Toolchain (without parser) took 1044.22ms. Allocated memory is still 161.5MB. Free memory was 120.9MB in the beginning and 105.2MB in the end (delta: 15.6MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2023-11-21 22:24:53,934 INFO L158 Benchmark]: CDTParser took 0.60ms. Allocated memory is still 127.9MB. Free memory is still 74.0MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-21 22:24:53,936 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1040.61ms. Allocated memory is still 161.5MB. Free memory was 120.9MB in the beginning and 105.7MB in the end (delta: 15.1MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2023-11-21 22:24:53,938 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.60ms. Allocated memory is still 127.9MB. Free memory is still 74.0MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1040.61ms. Allocated memory is still 161.5MB. Free memory was 120.9MB in the beginning and 105.7MB in the end (delta: 15.1MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 1233]: Unsupported Syntax Found a cast between two array/pointer types of different sizes while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c30d3746-f3dd-47f2-86d5-cba23d99ec03/bin/uautomizer-verify-bycVGegfSx/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c30d3746-f3dd-47f2-86d5-cba23d99ec03/bin/uautomizer-verify-bycVGegfSx/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c30d3746-f3dd-47f2-86d5-cba23d99ec03/bin/uautomizer-verify-bycVGegfSx/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c30d3746-f3dd-47f2-86d5-cba23d99ec03/bin/uautomizer-verify-bycVGegfSx/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/goblint-regression/06-symbeq_15-list_entry_nr.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c30d3746-f3dd-47f2-86d5-cba23d99ec03/bin/uautomizer-verify-bycVGegfSx/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c30d3746-f3dd-47f2-86d5-cba23d99ec03/bin/uautomizer-verify-bycVGegfSx --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 23d465ba9caf460ed15aca3aec6b262b1ee2c4f0003cc0e5fbc446c20cfe164a --- Real Ultimate output --- This is Ultimate 0.2.3-dev-527bcce [2023-11-21 22:24:56,804 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-21 22:24:56,915 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c30d3746-f3dd-47f2-86d5-cba23d99ec03/bin/uautomizer-verify-bycVGegfSx/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2023-11-21 22:24:56,924 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-21 22:24:56,925 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-21 22:24:56,995 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-21 22:24:56,997 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-21 22:24:56,997 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-21 22:24:56,999 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-21 22:24:57,005 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-21 22:24:57,006 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-21 22:24:57,007 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-21 22:24:57,008 INFO L153 SettingsManager]: * Use SBE=true [2023-11-21 22:24:57,010 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-21 22:24:57,010 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-21 22:24:57,011 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-21 22:24:57,012 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-21 22:24:57,012 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-21 22:24:57,013 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-21 22:24:57,014 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-21 22:24:57,015 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-21 22:24:57,015 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-21 22:24:57,016 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-21 22:24:57,016 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-11-21 22:24:57,016 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-11-21 22:24:57,017 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-21 22:24:57,017 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-21 22:24:57,018 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-21 22:24:57,018 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-21 22:24:57,019 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-21 22:24:57,019 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-21 22:24:57,020 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-21 22:24:57,020 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-21 22:24:57,020 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-21 22:24:57,021 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-21 22:24:57,021 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-11-21 22:24:57,021 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-11-21 22:24:57,022 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-21 22:24:57,022 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-21 22:24:57,022 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-21 22:24:57,022 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-21 22:24:57,025 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-11-21 22:24:57,026 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_c30d3746-f3dd-47f2-86d5-cba23d99ec03/bin/uautomizer-verify-bycVGegfSx/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c30d3746-f3dd-47f2-86d5-cba23d99ec03/bin/uautomizer-verify-bycVGegfSx Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 23d465ba9caf460ed15aca3aec6b262b1ee2c4f0003cc0e5fbc446c20cfe164a [2023-11-21 22:24:57,481 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-21 22:24:57,518 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-21 22:24:57,522 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-21 22:24:57,524 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-21 22:24:57,525 INFO L274 PluginConnector]: CDTParser initialized [2023-11-21 22:24:57,527 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c30d3746-f3dd-47f2-86d5-cba23d99ec03/bin/uautomizer-verify-bycVGegfSx/../../sv-benchmarks/c/goblint-regression/06-symbeq_15-list_entry_nr.i [2023-11-21 22:25:01,281 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-21 22:25:01,739 INFO L384 CDTParser]: Found 1 translation units. [2023-11-21 22:25:01,748 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c30d3746-f3dd-47f2-86d5-cba23d99ec03/sv-benchmarks/c/goblint-regression/06-symbeq_15-list_entry_nr.i [2023-11-21 22:25:01,776 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c30d3746-f3dd-47f2-86d5-cba23d99ec03/bin/uautomizer-verify-bycVGegfSx/data/440f2ea8f/89ae0196e62e485f9102db072cfd759f/FLAG3c9fd83b0 [2023-11-21 22:25:01,796 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c30d3746-f3dd-47f2-86d5-cba23d99ec03/bin/uautomizer-verify-bycVGegfSx/data/440f2ea8f/89ae0196e62e485f9102db072cfd759f [2023-11-21 22:25:01,799 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-21 22:25:01,801 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-21 22:25:01,803 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-21 22:25:01,804 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-21 22:25:01,817 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-21 22:25:01,818 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 10:25:01" (1/1) ... [2023-11-21 22:25:01,819 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3945bb87 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:25:01, skipping insertion in model container [2023-11-21 22:25:01,820 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 10:25:01" (1/1) ... [2023-11-21 22:25:01,918 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-21 22:25:02,906 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-21 22:25:02,925 INFO L199 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2023-11-21 22:25:02,943 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-21 22:25:02,999 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-21 22:25:03,007 INFO L202 MainTranslator]: Completed pre-run [2023-11-21 22:25:03,064 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-21 22:25:03,175 INFO L206 MainTranslator]: Completed translation [2023-11-21 22:25:03,176 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:25:03 WrapperNode [2023-11-21 22:25:03,176 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-21 22:25:03,177 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-21 22:25:03,177 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-21 22:25:03,177 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-21 22:25:03,185 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:25:03" (1/1) ... [2023-11-21 22:25:03,209 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:25:03" (1/1) ... [2023-11-21 22:25:03,235 INFO L138 Inliner]: procedures = 367, calls = 16, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 58 [2023-11-21 22:25:03,235 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-21 22:25:03,236 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-21 22:25:03,236 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-21 22:25:03,237 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-21 22:25:03,246 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:25:03" (1/1) ... [2023-11-21 22:25:03,246 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:25:03" (1/1) ... [2023-11-21 22:25:03,251 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:25:03" (1/1) ... [2023-11-21 22:25:03,251 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:25:03" (1/1) ... [2023-11-21 22:25:03,262 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:25:03" (1/1) ... [2023-11-21 22:25:03,264 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:25:03" (1/1) ... [2023-11-21 22:25:03,266 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:25:03" (1/1) ... [2023-11-21 22:25:03,268 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:25:03" (1/1) ... [2023-11-21 22:25:03,272 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-21 22:25:03,273 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-21 22:25:03,273 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-21 22:25:03,274 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-21 22:25:03,274 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:25:03" (1/1) ... [2023-11-21 22:25:03,280 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-21 22:25:03,304 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c30d3746-f3dd-47f2-86d5-cba23d99ec03/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 22:25:03,331 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c30d3746-f3dd-47f2-86d5-cba23d99ec03/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-21 22:25:03,369 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c30d3746-f3dd-47f2-86d5-cba23d99ec03/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-21 22:25:03,381 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2023-11-21 22:25:03,382 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-21 22:25:03,382 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-21 22:25:03,382 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2023-11-21 22:25:03,382 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2023-11-21 22:25:03,383 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-11-21 22:25:03,383 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-21 22:25:03,383 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2023-11-21 22:25:03,384 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2023-11-21 22:25:03,384 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-21 22:25:03,385 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-21 22:25:03,387 WARN L212 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-21 22:25:03,625 INFO L240 CfgBuilder]: Building ICFG [2023-11-21 22:25:03,628 INFO L266 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-21 22:25:04,018 INFO L281 CfgBuilder]: Performing block encoding [2023-11-21 22:25:04,215 INFO L303 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-21 22:25:04,216 INFO L308 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-21 22:25:04,218 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 10:25:04 BoogieIcfgContainer [2023-11-21 22:25:04,218 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-21 22:25:04,222 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-21 22:25:04,223 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-21 22:25:04,228 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-21 22:25:04,228 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.11 10:25:01" (1/3) ... [2023-11-21 22:25:04,229 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@165d0ae1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 10:25:04, skipping insertion in model container [2023-11-21 22:25:04,229 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:25:03" (2/3) ... [2023-11-21 22:25:04,231 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@165d0ae1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 10:25:04, skipping insertion in model container [2023-11-21 22:25:04,233 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 10:25:04" (3/3) ... [2023-11-21 22:25:04,234 INFO L112 eAbstractionObserver]: Analyzing ICFG 06-symbeq_15-list_entry_nr.i [2023-11-21 22:25:04,256 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-21 22:25:04,257 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 13 error locations. [2023-11-21 22:25:04,257 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-21 22:25:04,308 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-21 22:25:04,346 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 37 places, 33 transitions, 70 flow [2023-11-21 22:25:04,386 INFO L124 PetriNetUnfolderBase]: 0/32 cut-off events. [2023-11-21 22:25:04,386 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-21 22:25:04,389 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36 conditions, 32 events. 0/32 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 62 event pairs, 0 based on Foata normal form. 0/19 useless extension candidates. Maximal degree in co-relation 0. Up to 1 conditions per place. [2023-11-21 22:25:04,390 INFO L82 GeneralOperation]: Start removeDead. Operand has 37 places, 33 transitions, 70 flow [2023-11-21 22:25:04,394 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 36 places, 32 transitions, 67 flow [2023-11-21 22:25:04,406 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-21 22:25:04,414 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;@28f432d4, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-21 22:25:04,414 INFO L358 AbstractCegarLoop]: Starting to check reachability of 18 error locations. [2023-11-21 22:25:04,417 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-21 22:25:04,417 INFO L124 PetriNetUnfolderBase]: 0/1 cut-off events. [2023-11-21 22:25:04,417 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-21 22:25:04,418 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 22:25:04,418 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-11-21 22:25:04,419 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2023-11-21 22:25:04,425 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:25:04,426 INFO L85 PathProgramCache]: Analyzing trace with hash 6536, now seen corresponding path program 1 times [2023-11-21 22:25:04,441 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-21 22:25:04,441 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1895227698] [2023-11-21 22:25:04,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:25:04,442 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 [2023-11-21 22:25:04,443 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c30d3746-f3dd-47f2-86d5-cba23d99ec03/bin/uautomizer-verify-bycVGegfSx/mathsat [2023-11-21 22:25:04,449 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c30d3746-f3dd-47f2-86d5-cba23d99ec03/bin/uautomizer-verify-bycVGegfSx/mathsat -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) [2023-11-21 22:25:04,501 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c30d3746-f3dd-47f2-86d5-cba23d99ec03/bin/uautomizer-verify-bycVGegfSx/mathsat -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 [2023-11-21 22:25:04,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:25:04,584 INFO L262 TraceCheckSpWp]: Trace formula consists of 27 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-21 22:25:04,589 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 22:25:04,688 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-11-21 22:25:04,710 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 22:25:04,711 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 1 [2023-11-21 22:25:04,721 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:25:04,721 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-21 22:25:04,723 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-21 22:25:04,724 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1895227698] [2023-11-21 22:25:04,725 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1895227698] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:25:04,725 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:25:04,725 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-21 22:25:04,727 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [245876876] [2023-11-21 22:25:04,728 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:25:04,736 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-21 22:25:04,743 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-21 22:25:04,777 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-21 22:25:04,778 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-21 22:25:04,819 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 33 [2023-11-21 22:25:04,823 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 32 transitions, 67 flow. Second operand has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:25:04,823 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-21 22:25:04,824 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 33 [2023-11-21 22:25:04,825 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-21 22:25:05,022 INFO L124 PetriNetUnfolderBase]: 42/141 cut-off events. [2023-11-21 22:25:05,023 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-11-21 22:25:05,027 INFO L83 FinitePrefix]: Finished finitePrefix Result has 246 conditions, 141 events. 42/141 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 531 event pairs, 42 based on Foata normal form. 0/126 useless extension candidates. Maximal degree in co-relation 231. Up to 100 conditions per place. [2023-11-21 22:25:05,031 INFO L140 encePairwiseOnDemand]: 30/33 looper letters, 14 selfloop transitions, 2 changer transitions 0/31 dead transitions. [2023-11-21 22:25:05,031 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 31 transitions, 97 flow [2023-11-21 22:25:05,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-21 22:25:05,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-21 22:25:05,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 65 transitions. [2023-11-21 22:25:05,044 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6565656565656566 [2023-11-21 22:25:05,045 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 65 transitions. [2023-11-21 22:25:05,045 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 65 transitions. [2023-11-21 22:25:05,046 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-21 22:25:05,049 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 65 transitions. [2023-11-21 22:25:05,051 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:25:05,054 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 33.0) internal successors, (132), 4 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:25:05,055 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 33.0) internal successors, (132), 4 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:25:05,057 INFO L175 Difference]: Start difference. First operand has 36 places, 32 transitions, 67 flow. Second operand 3 states and 65 transitions. [2023-11-21 22:25:05,059 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 31 transitions, 97 flow [2023-11-21 22:25:05,062 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 31 transitions, 96 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-21 22:25:05,065 INFO L231 Difference]: Finished difference. Result has 36 places, 31 transitions, 68 flow [2023-11-21 22:25:05,068 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=64, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=68, PETRI_PLACES=36, PETRI_TRANSITIONS=31} [2023-11-21 22:25:05,073 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 0 predicate places. [2023-11-21 22:25:05,074 INFO L495 AbstractCegarLoop]: Abstraction has has 36 places, 31 transitions, 68 flow [2023-11-21 22:25:05,075 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:25:05,075 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 22:25:05,075 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-11-21 22:25:05,083 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c30d3746-f3dd-47f2-86d5-cba23d99ec03/bin/uautomizer-verify-bycVGegfSx/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Ended with exit code 0 [2023-11-21 22:25:05,277 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c30d3746-f3dd-47f2-86d5-cba23d99ec03/bin/uautomizer-verify-bycVGegfSx/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-21 22:25:05,278 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2023-11-21 22:25:05,280 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:25:05,281 INFO L85 PathProgramCache]: Analyzing trace with hash 6537, now seen corresponding path program 1 times [2023-11-21 22:25:05,281 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-21 22:25:05,282 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [612703288] [2023-11-21 22:25:05,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:25:05,282 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 [2023-11-21 22:25:05,282 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c30d3746-f3dd-47f2-86d5-cba23d99ec03/bin/uautomizer-verify-bycVGegfSx/mathsat [2023-11-21 22:25:05,284 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c30d3746-f3dd-47f2-86d5-cba23d99ec03/bin/uautomizer-verify-bycVGegfSx/mathsat -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) [2023-11-21 22:25:05,298 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c30d3746-f3dd-47f2-86d5-cba23d99ec03/bin/uautomizer-verify-bycVGegfSx/mathsat -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 [2023-11-21 22:25:05,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:25:05,410 INFO L262 TraceCheckSpWp]: Trace formula consists of 27 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-21 22:25:05,411 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 22:25:05,448 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 [2023-11-21 22:25:05,478 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 22:25:05,483 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-21 22:25:05,497 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:25:05,497 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-21 22:25:05,497 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-21 22:25:05,497 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [612703288] [2023-11-21 22:25:05,498 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [612703288] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:25:05,498 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:25:05,498 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-21 22:25:05,499 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1566217409] [2023-11-21 22:25:05,499 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:25:05,502 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-21 22:25:05,502 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-21 22:25:05,503 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-21 22:25:05,504 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-21 22:25:05,567 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 33 [2023-11-21 22:25:05,567 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 31 transitions, 68 flow. Second operand has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:25:05,567 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-21 22:25:05,567 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 33 [2023-11-21 22:25:05,568 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-21 22:25:05,700 INFO L124 PetriNetUnfolderBase]: 42/140 cut-off events. [2023-11-21 22:25:05,700 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-21 22:25:05,702 INFO L83 FinitePrefix]: Finished finitePrefix Result has 247 conditions, 140 events. 42/140 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 530 event pairs, 42 based on Foata normal form. 1/126 useless extension candidates. Maximal degree in co-relation 238. Up to 100 conditions per place. [2023-11-21 22:25:05,704 INFO L140 encePairwiseOnDemand]: 30/33 looper letters, 14 selfloop transitions, 2 changer transitions 0/30 dead transitions. [2023-11-21 22:25:05,705 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 30 transitions, 98 flow [2023-11-21 22:25:05,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-21 22:25:05,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-21 22:25:05,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 65 transitions. [2023-11-21 22:25:05,716 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6565656565656566 [2023-11-21 22:25:05,716 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 65 transitions. [2023-11-21 22:25:05,716 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 65 transitions. [2023-11-21 22:25:05,718 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-21 22:25:05,718 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 65 transitions. [2023-11-21 22:25:05,721 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:25:05,722 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 33.0) internal successors, (132), 4 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:25:05,722 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 33.0) internal successors, (132), 4 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:25:05,722 INFO L175 Difference]: Start difference. First operand has 36 places, 31 transitions, 68 flow. Second operand 3 states and 65 transitions. [2023-11-21 22:25:05,723 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 30 transitions, 98 flow [2023-11-21 22:25:05,723 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 30 transitions, 94 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-21 22:25:05,724 INFO L231 Difference]: Finished difference. Result has 35 places, 30 transitions, 66 flow [2023-11-21 22:25:05,725 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=62, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=66, PETRI_PLACES=35, PETRI_TRANSITIONS=30} [2023-11-21 22:25:05,726 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, -1 predicate places. [2023-11-21 22:25:05,726 INFO L495 AbstractCegarLoop]: Abstraction has has 35 places, 30 transitions, 66 flow [2023-11-21 22:25:05,726 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:25:05,726 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 22:25:05,726 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-11-21 22:25:05,734 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c30d3746-f3dd-47f2-86d5-cba23d99ec03/bin/uautomizer-verify-bycVGegfSx/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2023-11-21 22:25:05,927 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c30d3746-f3dd-47f2-86d5-cba23d99ec03/bin/uautomizer-verify-bycVGegfSx/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-21 22:25:05,927 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2023-11-21 22:25:05,928 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:25:05,928 INFO L85 PathProgramCache]: Analyzing trace with hash 202836, now seen corresponding path program 1 times [2023-11-21 22:25:05,929 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-21 22:25:05,929 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1072764095] [2023-11-21 22:25:05,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:25:05,929 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 [2023-11-21 22:25:05,929 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c30d3746-f3dd-47f2-86d5-cba23d99ec03/bin/uautomizer-verify-bycVGegfSx/mathsat [2023-11-21 22:25:05,931 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c30d3746-f3dd-47f2-86d5-cba23d99ec03/bin/uautomizer-verify-bycVGegfSx/mathsat -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) [2023-11-21 22:25:05,957 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c30d3746-f3dd-47f2-86d5-cba23d99ec03/bin/uautomizer-verify-bycVGegfSx/mathsat -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 [2023-11-21 22:25:06,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:25:06,061 INFO L262 TraceCheckSpWp]: Trace formula consists of 42 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-21 22:25:06,063 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 22:25:06,103 INFO L349 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2023-11-21 22:25:06,104 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 9 treesize of output 15 [2023-11-21 22:25:06,153 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:25:06,154 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-21 22:25:06,154 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-21 22:25:06,155 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1072764095] [2023-11-21 22:25:06,155 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1072764095] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:25:06,160 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:25:06,160 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-21 22:25:06,161 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1630590931] [2023-11-21 22:25:06,161 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:25:06,162 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-21 22:25:06,163 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-21 22:25:06,163 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-21 22:25:06,163 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-21 22:25:06,223 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 33 [2023-11-21 22:25:06,224 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 30 transitions, 66 flow. Second operand has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:25:06,224 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-21 22:25:06,224 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 33 [2023-11-21 22:25:06,224 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-21 22:25:06,447 INFO L124 PetriNetUnfolderBase]: 42/139 cut-off events. [2023-11-21 22:25:06,447 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-21 22:25:06,448 INFO L83 FinitePrefix]: Finished finitePrefix Result has 247 conditions, 139 events. 42/139 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 526 event pairs, 30 based on Foata normal form. 0/126 useless extension candidates. Maximal degree in co-relation 238. Up to 75 conditions per place. [2023-11-21 22:25:06,449 INFO L140 encePairwiseOnDemand]: 30/33 looper letters, 21 selfloop transitions, 2 changer transitions 0/35 dead transitions. [2023-11-21 22:25:06,449 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 35 transitions, 122 flow [2023-11-21 22:25:06,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-21 22:25:06,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-21 22:25:06,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 69 transitions. [2023-11-21 22:25:06,452 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.696969696969697 [2023-11-21 22:25:06,452 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 69 transitions. [2023-11-21 22:25:06,452 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 69 transitions. [2023-11-21 22:25:06,452 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-21 22:25:06,452 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 69 transitions. [2023-11-21 22:25:06,453 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:25:06,454 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 33.0) internal successors, (132), 4 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:25:06,455 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 33.0) internal successors, (132), 4 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:25:06,455 INFO L175 Difference]: Start difference. First operand has 35 places, 30 transitions, 66 flow. Second operand 3 states and 69 transitions. [2023-11-21 22:25:06,455 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 35 transitions, 122 flow [2023-11-21 22:25:06,456 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 35 transitions, 118 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-21 22:25:06,458 INFO L231 Difference]: Finished difference. Result has 34 places, 29 transitions, 64 flow [2023-11-21 22:25:06,458 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=60, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=64, PETRI_PLACES=34, PETRI_TRANSITIONS=29} [2023-11-21 22:25:06,459 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, -2 predicate places. [2023-11-21 22:25:06,459 INFO L495 AbstractCegarLoop]: Abstraction has has 34 places, 29 transitions, 64 flow [2023-11-21 22:25:06,459 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:25:06,460 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 22:25:06,460 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-11-21 22:25:06,475 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c30d3746-f3dd-47f2-86d5-cba23d99ec03/bin/uautomizer-verify-bycVGegfSx/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2023-11-21 22:25:06,666 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c30d3746-f3dd-47f2-86d5-cba23d99ec03/bin/uautomizer-verify-bycVGegfSx/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-21 22:25:06,666 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2023-11-21 22:25:06,667 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:25:06,667 INFO L85 PathProgramCache]: Analyzing trace with hash 202837, now seen corresponding path program 1 times [2023-11-21 22:25:06,667 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-21 22:25:06,668 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1742421359] [2023-11-21 22:25:06,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:25:06,668 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 [2023-11-21 22:25:06,668 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c30d3746-f3dd-47f2-86d5-cba23d99ec03/bin/uautomizer-verify-bycVGegfSx/mathsat [2023-11-21 22:25:06,670 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c30d3746-f3dd-47f2-86d5-cba23d99ec03/bin/uautomizer-verify-bycVGegfSx/mathsat -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) [2023-11-21 22:25:06,686 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c30d3746-f3dd-47f2-86d5-cba23d99ec03/bin/uautomizer-verify-bycVGegfSx/mathsat -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 [2023-11-21 22:25:06,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:25:06,761 INFO L262 TraceCheckSpWp]: Trace formula consists of 42 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-21 22:25:06,762 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 22:25:06,782 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 22:25:06,784 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 5 [2023-11-21 22:25:06,792 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2023-11-21 22:25:06,818 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:25:06,818 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-21 22:25:06,819 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-21 22:25:06,819 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1742421359] [2023-11-21 22:25:06,819 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1742421359] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:25:06,819 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:25:06,820 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-21 22:25:06,820 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1332437714] [2023-11-21 22:25:06,820 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:25:06,820 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-21 22:25:06,821 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-21 22:25:06,821 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-21 22:25:06,822 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-21 22:25:06,882 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 33 [2023-11-21 22:25:06,883 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 29 transitions, 64 flow. Second operand has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:25:06,883 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-21 22:25:06,883 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 33 [2023-11-21 22:25:06,883 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-21 22:25:07,020 INFO L124 PetriNetUnfolderBase]: 42/138 cut-off events. [2023-11-21 22:25:07,020 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-11-21 22:25:07,025 INFO L83 FinitePrefix]: Finished finitePrefix Result has 251 conditions, 138 events. 42/138 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 525 event pairs, 30 based on Foata normal form. 1/126 useless extension candidates. Maximal degree in co-relation 238. Up to 74 conditions per place. [2023-11-21 22:25:07,027 INFO L140 encePairwiseOnDemand]: 30/33 looper letters, 20 selfloop transitions, 2 changer transitions 0/34 dead transitions. [2023-11-21 22:25:07,027 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 34 transitions, 118 flow [2023-11-21 22:25:07,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-21 22:25:07,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-21 22:25:07,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 71 transitions. [2023-11-21 22:25:07,036 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7171717171717171 [2023-11-21 22:25:07,037 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 71 transitions. [2023-11-21 22:25:07,038 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 71 transitions. [2023-11-21 22:25:07,044 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-21 22:25:07,045 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 71 transitions. [2023-11-21 22:25:07,046 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:25:07,049 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 33.0) internal successors, (132), 4 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:25:07,051 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 33.0) internal successors, (132), 4 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:25:07,051 INFO L175 Difference]: Start difference. First operand has 34 places, 29 transitions, 64 flow. Second operand 3 states and 71 transitions. [2023-11-21 22:25:07,051 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 34 transitions, 118 flow [2023-11-21 22:25:07,052 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 34 transitions, 114 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-21 22:25:07,055 INFO L231 Difference]: Finished difference. Result has 33 places, 28 transitions, 62 flow [2023-11-21 22:25:07,057 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=58, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=62, PETRI_PLACES=33, PETRI_TRANSITIONS=28} [2023-11-21 22:25:07,065 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, -3 predicate places. [2023-11-21 22:25:07,065 INFO L495 AbstractCegarLoop]: Abstraction has has 33 places, 28 transitions, 62 flow [2023-11-21 22:25:07,066 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:25:07,066 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 22:25:07,066 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 22:25:07,070 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c30d3746-f3dd-47f2-86d5-cba23d99ec03/bin/uautomizer-verify-bycVGegfSx/mathsat -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 [2023-11-21 22:25:07,266 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c30d3746-f3dd-47f2-86d5-cba23d99ec03/bin/uautomizer-verify-bycVGegfSx/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-21 22:25:07,267 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting t_funErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2023-11-21 22:25:07,267 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:25:07,267 INFO L85 PathProgramCache]: Analyzing trace with hash 379962766, now seen corresponding path program 1 times [2023-11-21 22:25:07,268 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-21 22:25:07,268 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1113714344] [2023-11-21 22:25:07,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:25:07,268 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 [2023-11-21 22:25:07,269 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c30d3746-f3dd-47f2-86d5-cba23d99ec03/bin/uautomizer-verify-bycVGegfSx/mathsat [2023-11-21 22:25:07,270 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c30d3746-f3dd-47f2-86d5-cba23d99ec03/bin/uautomizer-verify-bycVGegfSx/mathsat -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) [2023-11-21 22:25:07,271 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c30d3746-f3dd-47f2-86d5-cba23d99ec03/bin/uautomizer-verify-bycVGegfSx/mathsat -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 [2023-11-21 22:25:07,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:25:07,383 INFO L262 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-21 22:25:07,385 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 22:25:07,399 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-11-21 22:25:07,408 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 22:25:07,409 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 1 [2023-11-21 22:25:07,450 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:25:07,450 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-21 22:25:07,450 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-21 22:25:07,451 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1113714344] [2023-11-21 22:25:07,451 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1113714344] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:25:07,451 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:25:07,451 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-21 22:25:07,452 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [862705235] [2023-11-21 22:25:07,452 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:25:07,452 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-21 22:25:07,453 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-21 22:25:07,454 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-21 22:25:07,454 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-21 22:25:07,536 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 33 [2023-11-21 22:25:07,536 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 28 transitions, 62 flow. Second operand has 4 states, 4 states have (on average 16.5) internal successors, (66), 4 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:25:07,536 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-21 22:25:07,536 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 33 [2023-11-21 22:25:07,537 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-21 22:25:07,714 INFO L124 PetriNetUnfolderBase]: 47/153 cut-off events. [2023-11-21 22:25:07,715 INFO L125 PetriNetUnfolderBase]: For 5/5 co-relation queries the response was YES. [2023-11-21 22:25:07,715 INFO L83 FinitePrefix]: Finished finitePrefix Result has 281 conditions, 153 events. 47/153 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 618 event pairs, 7 based on Foata normal form. 0/145 useless extension candidates. Maximal degree in co-relation 268. Up to 55 conditions per place. [2023-11-21 22:25:07,717 INFO L140 encePairwiseOnDemand]: 25/33 looper letters, 26 selfloop transitions, 8 changer transitions 0/44 dead transitions. [2023-11-21 22:25:07,717 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 44 transitions, 164 flow [2023-11-21 22:25:07,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-21 22:25:07,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-21 22:25:07,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 112 transitions. [2023-11-21 22:25:07,719 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6787878787878788 [2023-11-21 22:25:07,720 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 112 transitions. [2023-11-21 22:25:07,720 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 112 transitions. [2023-11-21 22:25:07,720 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-21 22:25:07,720 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 112 transitions. [2023-11-21 22:25:07,721 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 22.4) internal successors, (112), 5 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:25:07,723 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 33.0) internal successors, (198), 6 states have internal predecessors, (198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:25:07,723 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 33.0) internal successors, (198), 6 states have internal predecessors, (198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:25:07,724 INFO L175 Difference]: Start difference. First operand has 33 places, 28 transitions, 62 flow. Second operand 5 states and 112 transitions. [2023-11-21 22:25:07,724 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 44 transitions, 164 flow [2023-11-21 22:25:07,725 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 44 transitions, 158 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-21 22:25:07,727 INFO L231 Difference]: Finished difference. Result has 39 places, 34 transitions, 116 flow [2023-11-21 22:25:07,727 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=58, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=116, PETRI_PLACES=39, PETRI_TRANSITIONS=34} [2023-11-21 22:25:07,728 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 3 predicate places. [2023-11-21 22:25:07,728 INFO L495 AbstractCegarLoop]: Abstraction has has 39 places, 34 transitions, 116 flow [2023-11-21 22:25:07,729 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.5) internal successors, (66), 4 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:25:07,729 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 22:25:07,729 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 22:25:07,738 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c30d3746-f3dd-47f2-86d5-cba23d99ec03/bin/uautomizer-verify-bycVGegfSx/mathsat -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 [2023-11-21 22:25:07,932 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c30d3746-f3dd-47f2-86d5-cba23d99ec03/bin/uautomizer-verify-bycVGegfSx/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-21 22:25:07,933 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting t_funErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2023-11-21 22:25:07,933 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:25:07,933 INFO L85 PathProgramCache]: Analyzing trace with hash 379962767, now seen corresponding path program 1 times [2023-11-21 22:25:07,934 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-21 22:25:07,934 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [165168608] [2023-11-21 22:25:07,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:25:07,934 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 [2023-11-21 22:25:07,934 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c30d3746-f3dd-47f2-86d5-cba23d99ec03/bin/uautomizer-verify-bycVGegfSx/mathsat [2023-11-21 22:25:07,938 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c30d3746-f3dd-47f2-86d5-cba23d99ec03/bin/uautomizer-verify-bycVGegfSx/mathsat -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) [2023-11-21 22:25:07,939 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c30d3746-f3dd-47f2-86d5-cba23d99ec03/bin/uautomizer-verify-bycVGegfSx/mathsat -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 [2023-11-21 22:25:08,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:25:08,055 INFO L262 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-21 22:25:08,057 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 22:25:08,085 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 5 [2023-11-21 22:25:08,096 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 22:25:08,096 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 1 [2023-11-21 22:25:08,204 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:25:08,205 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-21 22:25:08,205 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-21 22:25:08,205 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [165168608] [2023-11-21 22:25:08,206 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [165168608] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:25:08,206 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:25:08,206 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-21 22:25:08,206 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1447856804] [2023-11-21 22:25:08,207 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:25:08,207 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-21 22:25:08,207 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-21 22:25:08,208 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-21 22:25:08,208 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-21 22:25:08,288 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 33 [2023-11-21 22:25:08,288 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 34 transitions, 116 flow. Second operand has 4 states, 4 states have (on average 16.5) internal successors, (66), 4 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:25:08,288 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-21 22:25:08,288 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 33 [2023-11-21 22:25:08,288 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-21 22:25:08,453 INFO L124 PetriNetUnfolderBase]: 45/135 cut-off events. [2023-11-21 22:25:08,453 INFO L125 PetriNetUnfolderBase]: For 52/52 co-relation queries the response was YES. [2023-11-21 22:25:08,455 INFO L83 FinitePrefix]: Finished finitePrefix Result has 325 conditions, 135 events. 45/135 cut-off events. For 52/52 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 486 event pairs, 12 based on Foata normal form. 18/149 useless extension candidates. Maximal degree in co-relation 308. Up to 82 conditions per place. [2023-11-21 22:25:08,456 INFO L140 encePairwiseOnDemand]: 28/33 looper letters, 22 selfloop transitions, 6 changer transitions 0/38 dead transitions. [2023-11-21 22:25:08,457 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 38 transitions, 180 flow [2023-11-21 22:25:08,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-21 22:25:08,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-21 22:25:08,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 85 transitions. [2023-11-21 22:25:08,463 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6439393939393939 [2023-11-21 22:25:08,464 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 85 transitions. [2023-11-21 22:25:08,464 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 85 transitions. [2023-11-21 22:25:08,464 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-21 22:25:08,464 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 85 transitions. [2023-11-21 22:25:08,465 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 21.25) internal successors, (85), 4 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:25:08,467 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 33.0) internal successors, (165), 5 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:25:08,467 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 33.0) internal successors, (165), 5 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:25:08,468 INFO L175 Difference]: Start difference. First operand has 39 places, 34 transitions, 116 flow. Second operand 4 states and 85 transitions. [2023-11-21 22:25:08,468 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 38 transitions, 180 flow [2023-11-21 22:25:08,473 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 38 transitions, 180 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-21 22:25:08,475 INFO L231 Difference]: Finished difference. Result has 40 places, 32 transitions, 124 flow [2023-11-21 22:25:08,475 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=112, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=124, PETRI_PLACES=40, PETRI_TRANSITIONS=32} [2023-11-21 22:25:08,481 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 4 predicate places. [2023-11-21 22:25:08,481 INFO L495 AbstractCegarLoop]: Abstraction has has 40 places, 32 transitions, 124 flow [2023-11-21 22:25:08,481 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.5) internal successors, (66), 4 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:25:08,482 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 22:25:08,487 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 22:25:08,491 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c30d3746-f3dd-47f2-86d5-cba23d99ec03/bin/uautomizer-verify-bycVGegfSx/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2023-11-21 22:25:08,690 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c30d3746-f3dd-47f2-86d5-cba23d99ec03/bin/uautomizer-verify-bycVGegfSx/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-21 22:25:08,691 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2023-11-21 22:25:08,691 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:25:08,691 INFO L85 PathProgramCache]: Analyzing trace with hash 379749900, now seen corresponding path program 1 times [2023-11-21 22:25:08,692 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-21 22:25:08,692 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [253739330] [2023-11-21 22:25:08,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:25:08,692 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 [2023-11-21 22:25:08,692 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c30d3746-f3dd-47f2-86d5-cba23d99ec03/bin/uautomizer-verify-bycVGegfSx/mathsat [2023-11-21 22:25:08,694 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c30d3746-f3dd-47f2-86d5-cba23d99ec03/bin/uautomizer-verify-bycVGegfSx/mathsat -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) [2023-11-21 22:25:08,696 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c30d3746-f3dd-47f2-86d5-cba23d99ec03/bin/uautomizer-verify-bycVGegfSx/mathsat -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 [2023-11-21 22:25:08,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:25:08,817 INFO L262 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-21 22:25:08,819 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 22:25:08,836 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 [2023-11-21 22:25:08,852 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 22:25:08,857 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-21 22:25:08,971 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:25:08,972 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-21 22:25:08,972 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-21 22:25:08,972 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [253739330] [2023-11-21 22:25:08,973 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [253739330] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:25:08,973 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:25:08,973 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-21 22:25:08,973 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1724870387] [2023-11-21 22:25:08,974 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:25:08,974 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-21 22:25:08,974 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-21 22:25:08,975 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-21 22:25:08,975 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-21 22:25:09,065 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 33 [2023-11-21 22:25:09,065 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 32 transitions, 124 flow. Second operand has 4 states, 4 states have (on average 16.5) internal successors, (66), 4 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:25:09,065 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-21 22:25:09,065 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 33 [2023-11-21 22:25:09,065 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-21 22:25:09,225 INFO L124 PetriNetUnfolderBase]: 45/140 cut-off events. [2023-11-21 22:25:09,225 INFO L125 PetriNetUnfolderBase]: For 110/110 co-relation queries the response was YES. [2023-11-21 22:25:09,226 INFO L83 FinitePrefix]: Finished finitePrefix Result has 350 conditions, 140 events. 45/140 cut-off events. For 110/110 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 525 event pairs, 7 based on Foata normal form. 0/140 useless extension candidates. Maximal degree in co-relation 331. Up to 65 conditions per place. [2023-11-21 22:25:09,228 INFO L140 encePairwiseOnDemand]: 28/33 looper letters, 24 selfloop transitions, 4 changer transitions 0/36 dead transitions. [2023-11-21 22:25:09,228 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 36 transitions, 204 flow [2023-11-21 22:25:09,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-21 22:25:09,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-21 22:25:09,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 84 transitions. [2023-11-21 22:25:09,230 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6363636363636364 [2023-11-21 22:25:09,230 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 84 transitions. [2023-11-21 22:25:09,230 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 84 transitions. [2023-11-21 22:25:09,231 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-21 22:25:09,231 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 84 transitions. [2023-11-21 22:25:09,232 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 21.0) internal successors, (84), 4 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:25:09,233 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 33.0) internal successors, (165), 5 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:25:09,233 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 33.0) internal successors, (165), 5 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:25:09,234 INFO L175 Difference]: Start difference. First operand has 40 places, 32 transitions, 124 flow. Second operand 4 states and 84 transitions. [2023-11-21 22:25:09,234 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 36 transitions, 204 flow [2023-11-21 22:25:09,236 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 36 transitions, 188 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-11-21 22:25:09,238 INFO L231 Difference]: Finished difference. Result has 38 places, 30 transitions, 116 flow [2023-11-21 22:25:09,238 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=108, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=116, PETRI_PLACES=38, PETRI_TRANSITIONS=30} [2023-11-21 22:25:09,239 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 2 predicate places. [2023-11-21 22:25:09,239 INFO L495 AbstractCegarLoop]: Abstraction has has 38 places, 30 transitions, 116 flow [2023-11-21 22:25:09,239 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.5) internal successors, (66), 4 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:25:09,240 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 22:25:09,240 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 22:25:09,245 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c30d3746-f3dd-47f2-86d5-cba23d99ec03/bin/uautomizer-verify-bycVGegfSx/mathsat -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 [2023-11-21 22:25:09,443 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c30d3746-f3dd-47f2-86d5-cba23d99ec03/bin/uautomizer-verify-bycVGegfSx/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-21 22:25:09,443 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2023-11-21 22:25:09,444 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:25:09,444 INFO L85 PathProgramCache]: Analyzing trace with hash 379749899, now seen corresponding path program 1 times [2023-11-21 22:25:09,444 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-21 22:25:09,444 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2137001446] [2023-11-21 22:25:09,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:25:09,444 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 [2023-11-21 22:25:09,444 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c30d3746-f3dd-47f2-86d5-cba23d99ec03/bin/uautomizer-verify-bycVGegfSx/mathsat [2023-11-21 22:25:09,445 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c30d3746-f3dd-47f2-86d5-cba23d99ec03/bin/uautomizer-verify-bycVGegfSx/mathsat -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) [2023-11-21 22:25:09,448 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c30d3746-f3dd-47f2-86d5-cba23d99ec03/bin/uautomizer-verify-bycVGegfSx/mathsat -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 [2023-11-21 22:25:09,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:25:09,550 INFO L262 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-21 22:25:09,552 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 22:25:09,561 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 [2023-11-21 22:25:09,571 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 22:25:09,572 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-21 22:25:09,603 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:25:09,603 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-21 22:25:09,603 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-21 22:25:09,603 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2137001446] [2023-11-21 22:25:09,604 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2137001446] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:25:09,604 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:25:09,604 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-21 22:25:09,604 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1598440211] [2023-11-21 22:25:09,604 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:25:09,605 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-21 22:25:09,605 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-21 22:25:09,606 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-21 22:25:09,606 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-21 22:25:09,672 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 33 [2023-11-21 22:25:09,673 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 30 transitions, 116 flow. Second operand has 4 states, 4 states have (on average 16.5) internal successors, (66), 4 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:25:09,673 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-21 22:25:09,673 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 33 [2023-11-21 22:25:09,673 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-21 22:25:09,816 INFO L124 PetriNetUnfolderBase]: 45/123 cut-off events. [2023-11-21 22:25:09,816 INFO L125 PetriNetUnfolderBase]: For 73/73 co-relation queries the response was YES. [2023-11-21 22:25:09,817 INFO L83 FinitePrefix]: Finished finitePrefix Result has 329 conditions, 123 events. 45/123 cut-off events. For 73/73 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 389 event pairs, 19 based on Foata normal form. 0/123 useless extension candidates. Maximal degree in co-relation 310. Up to 65 conditions per place. [2023-11-21 22:25:09,818 INFO L140 encePairwiseOnDemand]: 28/33 looper letters, 27 selfloop transitions, 4 changer transitions 0/37 dead transitions. [2023-11-21 22:25:09,819 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 37 transitions, 206 flow [2023-11-21 22:25:09,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-21 22:25:09,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-21 22:25:09,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 90 transitions. [2023-11-21 22:25:09,820 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6818181818181818 [2023-11-21 22:25:09,820 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 90 transitions. [2023-11-21 22:25:09,821 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 90 transitions. [2023-11-21 22:25:09,821 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-21 22:25:09,821 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 90 transitions. [2023-11-21 22:25:09,822 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 22.5) internal successors, (90), 4 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:25:09,823 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 33.0) internal successors, (165), 5 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:25:09,823 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 33.0) internal successors, (165), 5 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:25:09,824 INFO L175 Difference]: Start difference. First operand has 38 places, 30 transitions, 116 flow. Second operand 4 states and 90 transitions. [2023-11-21 22:25:09,824 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 37 transitions, 206 flow [2023-11-21 22:25:09,826 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 37 transitions, 198 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-11-21 22:25:09,827 INFO L231 Difference]: Finished difference. Result has 36 places, 28 transitions, 112 flow [2023-11-21 22:25:09,828 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=104, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=112, PETRI_PLACES=36, PETRI_TRANSITIONS=28} [2023-11-21 22:25:09,829 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 0 predicate places. [2023-11-21 22:25:09,829 INFO L495 AbstractCegarLoop]: Abstraction has has 36 places, 28 transitions, 112 flow [2023-11-21 22:25:09,829 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.5) internal successors, (66), 4 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:25:09,829 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 22:25:09,830 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 22:25:09,838 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c30d3746-f3dd-47f2-86d5-cba23d99ec03/bin/uautomizer-verify-bycVGegfSx/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2023-11-21 22:25:10,033 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c30d3746-f3dd-47f2-86d5-cba23d99ec03/bin/uautomizer-verify-bycVGegfSx/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-21 22:25:10,034 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2023-11-21 22:25:10,034 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:25:10,034 INFO L85 PathProgramCache]: Analyzing trace with hash 1458576829, now seen corresponding path program 1 times [2023-11-21 22:25:10,035 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-21 22:25:10,035 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [211790935] [2023-11-21 22:25:10,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:25:10,035 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 [2023-11-21 22:25:10,036 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c30d3746-f3dd-47f2-86d5-cba23d99ec03/bin/uautomizer-verify-bycVGegfSx/mathsat [2023-11-21 22:25:10,037 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c30d3746-f3dd-47f2-86d5-cba23d99ec03/bin/uautomizer-verify-bycVGegfSx/mathsat -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) [2023-11-21 22:25:10,041 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c30d3746-f3dd-47f2-86d5-cba23d99ec03/bin/uautomizer-verify-bycVGegfSx/mathsat -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 [2023-11-21 22:25:10,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-21 22:25:10,206 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-21 22:25:10,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-21 22:25:10,354 INFO L130 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2023-11-21 22:25:10,354 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-21 22:25:10,355 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK (17 of 18 remaining) [2023-11-21 22:25:10,358 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (16 of 18 remaining) [2023-11-21 22:25:10,358 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (15 of 18 remaining) [2023-11-21 22:25:10,358 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (14 of 18 remaining) [2023-11-21 22:25:10,359 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (13 of 18 remaining) [2023-11-21 22:25:10,359 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (12 of 18 remaining) [2023-11-21 22:25:10,359 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (11 of 18 remaining) [2023-11-21 22:25:10,359 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (10 of 18 remaining) [2023-11-21 22:25:10,360 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 18 remaining) [2023-11-21 22:25:10,360 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (8 of 18 remaining) [2023-11-21 22:25:10,360 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 18 remaining) [2023-11-21 22:25:10,360 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 18 remaining) [2023-11-21 22:25:10,361 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 18 remaining) [2023-11-21 22:25:10,361 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 18 remaining) [2023-11-21 22:25:10,361 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 18 remaining) [2023-11-21 22:25:10,361 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (2 of 18 remaining) [2023-11-21 22:25:10,362 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (1 of 18 remaining) [2023-11-21 22:25:10,362 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (0 of 18 remaining) [2023-11-21 22:25:10,374 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c30d3746-f3dd-47f2-86d5-cba23d99ec03/bin/uautomizer-verify-bycVGegfSx/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2023-11-21 22:25:10,566 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c30d3746-f3dd-47f2-86d5-cba23d99ec03/bin/uautomizer-verify-bycVGegfSx/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-21 22:25:10,566 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 22:25:10,574 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-11-21 22:25:10,574 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-21 22:25:10,602 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~pre35 could not be translated [2023-11-21 22:25:10,615 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.11 10:25:10 BasicIcfg [2023-11-21 22:25:10,615 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-21 22:25:10,616 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-21 22:25:10,616 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-21 22:25:10,617 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-21 22:25:10,617 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 10:25:04" (3/4) ... [2023-11-21 22:25:10,619 INFO L140 WitnessPrinter]: No result that supports witness generation found [2023-11-21 22:25:10,621 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-21 22:25:10,623 INFO L158 Benchmark]: Toolchain (without parser) took 8820.20ms. Allocated memory was 81.8MB in the beginning and 98.6MB in the end (delta: 16.8MB). Free memory was 56.0MB in the beginning and 68.3MB in the end (delta: -12.3MB). Peak memory consumption was 6.8MB. Max. memory is 16.1GB. [2023-11-21 22:25:10,624 INFO L158 Benchmark]: CDTParser took 0.40ms. Allocated memory is still 58.7MB. Free memory was 35.2MB in the beginning and 35.1MB in the end (delta: 92.4kB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-21 22:25:10,624 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1373.00ms. Allocated memory is still 81.8MB. Free memory was 55.8MB in the beginning and 50.9MB in the end (delta: 4.9MB). Peak memory consumption was 26.2MB. Max. memory is 16.1GB. [2023-11-21 22:25:10,625 INFO L158 Benchmark]: Boogie Procedure Inliner took 58.58ms. Allocated memory is still 81.8MB. Free memory was 50.9MB in the beginning and 48.2MB in the end (delta: 2.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-21 22:25:10,625 INFO L158 Benchmark]: Boogie Preprocessor took 36.26ms. Allocated memory is still 81.8MB. Free memory was 48.2MB in the beginning and 46.5MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-21 22:25:10,626 INFO L158 Benchmark]: RCFGBuilder took 945.48ms. Allocated memory is still 81.8MB. Free memory was 46.1MB in the beginning and 40.6MB in the end (delta: 5.5MB). Peak memory consumption was 16.1MB. Max. memory is 16.1GB. [2023-11-21 22:25:10,627 INFO L158 Benchmark]: TraceAbstraction took 6393.65ms. Allocated memory was 81.8MB in the beginning and 98.6MB in the end (delta: 16.8MB). Free memory was 40.0MB in the beginning and 68.3MB in the end (delta: -28.3MB). Peak memory consumption was 33.7MB. Max. memory is 16.1GB. [2023-11-21 22:25:10,627 INFO L158 Benchmark]: Witness Printer took 4.69ms. Allocated memory is still 98.6MB. Free memory is still 68.3MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-21 22:25:10,630 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.40ms. Allocated memory is still 58.7MB. Free memory was 35.2MB in the beginning and 35.1MB in the end (delta: 92.4kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1373.00ms. Allocated memory is still 81.8MB. Free memory was 55.8MB in the beginning and 50.9MB in the end (delta: 4.9MB). Peak memory consumption was 26.2MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 58.58ms. Allocated memory is still 81.8MB. Free memory was 50.9MB in the beginning and 48.2MB in the end (delta: 2.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 36.26ms. Allocated memory is still 81.8MB. Free memory was 48.2MB in the beginning and 46.5MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 945.48ms. Allocated memory is still 81.8MB. Free memory was 46.1MB in the beginning and 40.6MB in the end (delta: 5.5MB). Peak memory consumption was 16.1MB. Max. memory is 16.1GB. * TraceAbstraction took 6393.65ms. Allocated memory was 81.8MB in the beginning and 98.6MB in the end (delta: 16.8MB). Free memory was 40.0MB in the beginning and 68.3MB in the end (delta: -28.3MB). Peak memory consumption was 33.7MB. Max. memory is 16.1GB. * Witness Printer took 4.69ms. Allocated memory is still 98.6MB. Free memory is still 68.3MB. There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~pre35 could not be translated - GenericResult: Unfinished Backtranslation The program execution was not completely translated back. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 1242]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: overapproximation of memtrack at line 1242. Possible FailurePath: [L1223-L1227] 0 struct s { int datum; pthread_mutex_t mutex; int list; } *A; [L1243] 0 pthread_t t1; [L1244] 0 A = malloc(sizeof(struct s)) [L1245] CALL 0 init(A,666) [L1229] 0 p->datum = x [L1245] RET 0 init(A,666) [L1246] FCALL, FORK 0 pthread_create(&t1, ((void *)0), t_fun, ((void *)0)) VAL [A={-2147483648:0}, t1={-2147483646:0}] [L1247] CALL 0 update(&A->list) [L1233] 0 struct s *s = ((struct s *)((char *)(p)-(unsigned long)(&((struct s *)0)->list))); VAL [A={-2147483648:0}, p={-2147483648:28}, p={-2147483648:28}, s={-2147483648:0}] [L1235] EXPR 0 s->datum [L1235] 0 s->datum++ [L1247] RET 0 update(&A->list) [L1248] 0 return 0; [L1248] 0 return 0; VAL [A={-2147483648:0}, \result=0] - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1246]: Unable to prove that petrification did provide enough thread instances (tool internal message) Unable to prove that petrification did provide enough thread instances (tool internal message) Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 3 procedures, 47 locations, 18 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 6.2s, OverallIterations: 9, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 2.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 338 SdHoareTripleChecker+Valid, 1.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 207 mSDsluCounter, 39 SdHoareTripleChecker+Invalid, 1.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 8 mSDsCounter, 10 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 468 IncrementalHoareTripleChecker+Invalid, 478 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 10 mSolverCounterUnsat, 31 mSDtfsCounter, 468 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 38 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=124occurred in iteration=6, InterpolantAutomatonStates: 29, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 0.8s InterpolantComputationTime, 54 NumberOfCodeBlocks, 54 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 34 ConstructedInterpolants, 2 QuantifiedInterpolants, 290 SizeOfPredicates, 42 NumberOfNonLiveVariables, 414 ConjunctsInSsa, 65 ConjunctsInUnsatCore, 8 InterpolantComputations, 8 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2023-11-21 22:25:10,686 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c30d3746-f3dd-47f2-86d5-cba23d99ec03/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: UNKNOWN: Overapproximated counterexample