./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/busybox-1.22.0/usleep-2.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 0e0057cc 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_5ec37dfe-0b32-477f-82c3-86ba483f8af8/bin/uautomizer-verify-VRDe98Ueme/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ec37dfe-0b32-477f-82c3-86ba483f8af8/bin/uautomizer-verify-VRDe98Ueme/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ec37dfe-0b32-477f-82c3-86ba483f8af8/bin/uautomizer-verify-VRDe98Ueme/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ec37dfe-0b32-477f-82c3-86ba483f8af8/bin/uautomizer-verify-VRDe98Ueme/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/busybox-1.22.0/usleep-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ec37dfe-0b32-477f-82c3-86ba483f8af8/bin/uautomizer-verify-VRDe98Ueme/config/svcomp-DerefFreeMemtrack-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ec37dfe-0b32-477f-82c3-86ba483f8af8/bin/uautomizer-verify-VRDe98Ueme --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 64bit --witnessprinter.graph.data.programhash ddb26eab16f240735f9d1465e4eb4848a506b7f6f359090de5f9df37aee37107 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-26 11:55:35,464 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-26 11:55:35,541 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ec37dfe-0b32-477f-82c3-86ba483f8af8/bin/uautomizer-verify-VRDe98Ueme/config/svcomp-DerefFreeMemtrack-64bit-Automizer_Default.epf [2023-11-26 11:55:35,547 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-26 11:55:35,548 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-26 11:55:35,577 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-26 11:55:35,578 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-26 11:55:35,579 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-26 11:55:35,580 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-26 11:55:35,581 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-26 11:55:35,582 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-26 11:55:35,582 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-26 11:55:35,583 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-26 11:55:35,584 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-26 11:55:35,585 INFO L153 SettingsManager]: * Use SBE=true [2023-11-26 11:55:35,586 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-26 11:55:35,586 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-26 11:55:35,587 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-26 11:55:35,588 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-26 11:55:35,588 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-26 11:55:35,589 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-26 11:55:35,590 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-26 11:55:35,591 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-26 11:55:35,591 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-26 11:55:35,592 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-26 11:55:35,593 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-26 11:55:35,593 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-26 11:55:35,594 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-26 11:55:35,595 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-26 11:55:35,596 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-26 11:55:35,596 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-26 11:55:35,597 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-26 11:55:35,598 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-26 11:55:35,599 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-26 11:55:35,599 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-26 11:55:35,600 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-26 11:55:35,600 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-26 11:55:35,601 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-26 11:55:35,602 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_5ec37dfe-0b32-477f-82c3-86ba483f8af8/bin/uautomizer-verify-VRDe98Ueme/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ec37dfe-0b32-477f-82c3-86ba483f8af8/bin/uautomizer-verify-VRDe98Ueme Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ddb26eab16f240735f9d1465e4eb4848a506b7f6f359090de5f9df37aee37107 [2023-11-26 11:55:35,896 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-26 11:55:35,924 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-26 11:55:35,927 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-26 11:55:35,929 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-26 11:55:35,930 INFO L274 PluginConnector]: CDTParser initialized [2023-11-26 11:55:35,932 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ec37dfe-0b32-477f-82c3-86ba483f8af8/bin/uautomizer-verify-VRDe98Ueme/../../sv-benchmarks/c/busybox-1.22.0/usleep-2.i [2023-11-26 11:55:39,120 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-26 11:55:39,675 INFO L384 CDTParser]: Found 1 translation units. [2023-11-26 11:55:39,676 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ec37dfe-0b32-477f-82c3-86ba483f8af8/sv-benchmarks/c/busybox-1.22.0/usleep-2.i [2023-11-26 11:55:39,715 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ec37dfe-0b32-477f-82c3-86ba483f8af8/bin/uautomizer-verify-VRDe98Ueme/data/23055a037/1e0e1403fb2a484ba529de26eab0ca30/FLAGb68889b65 [2023-11-26 11:55:39,736 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ec37dfe-0b32-477f-82c3-86ba483f8af8/bin/uautomizer-verify-VRDe98Ueme/data/23055a037/1e0e1403fb2a484ba529de26eab0ca30 [2023-11-26 11:55:39,743 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-26 11:55:39,748 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-26 11:55:39,752 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-26 11:55:39,752 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-26 11:55:39,757 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-26 11:55:39,760 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 11:55:39" (1/1) ... [2023-11-26 11:55:39,761 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@21d122bf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:55:39, skipping insertion in model container [2023-11-26 11:55:39,761 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 11:55:39" (1/1) ... [2023-11-26 11:55:39,846 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-26 11:55:41,191 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-26 11:55:41,217 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) [2023-11-26 11:55:41,218 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@2a0966f2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:55:41, skipping insertion in model container [2023-11-26 11:55:41,218 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-26 11:55:41,219 INFO L186 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2023-11-26 11:55:41,221 INFO L158 Benchmark]: Toolchain (without parser) took 1472.31ms. Allocated memory is still 148.9MB. Free memory was 115.3MB in the beginning and 87.7MB in the end (delta: 27.6MB). Peak memory consumption was 27.3MB. Max. memory is 16.1GB. [2023-11-26 11:55:41,222 INFO L158 Benchmark]: CDTParser took 0.30ms. Allocated memory is still 111.1MB. Free memory is still 60.1MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-26 11:55:41,223 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1467.14ms. Allocated memory is still 148.9MB. Free memory was 115.3MB in the beginning and 87.7MB in the end (delta: 27.6MB). Peak memory consumption was 27.3MB. Max. memory is 16.1GB. [2023-11-26 11:55:41,224 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30ms. Allocated memory is still 111.1MB. Free memory is still 60.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1467.14ms. Allocated memory is still 148.9MB. Free memory was 115.3MB in the beginning and 87.7MB in the end (delta: 27.6MB). Peak memory consumption was 27.3MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 2351]: 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_5ec37dfe-0b32-477f-82c3-86ba483f8af8/bin/uautomizer-verify-VRDe98Ueme/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ec37dfe-0b32-477f-82c3-86ba483f8af8/bin/uautomizer-verify-VRDe98Ueme/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ec37dfe-0b32-477f-82c3-86ba483f8af8/bin/uautomizer-verify-VRDe98Ueme/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ec37dfe-0b32-477f-82c3-86ba483f8af8/bin/uautomizer-verify-VRDe98Ueme/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/busybox-1.22.0/usleep-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ec37dfe-0b32-477f-82c3-86ba483f8af8/bin/uautomizer-verify-VRDe98Ueme/config/svcomp-DerefFreeMemtrack-64bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ec37dfe-0b32-477f-82c3-86ba483f8af8/bin/uautomizer-verify-VRDe98Ueme --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 64bit --witnessprinter.graph.data.programhash ddb26eab16f240735f9d1465e4eb4848a506b7f6f359090de5f9df37aee37107 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-26 11:55:43,815 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-26 11:55:43,964 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ec37dfe-0b32-477f-82c3-86ba483f8af8/bin/uautomizer-verify-VRDe98Ueme/config/svcomp-DerefFreeMemtrack-64bit-Automizer_Bitvector.epf [2023-11-26 11:55:43,973 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-26 11:55:43,974 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-26 11:55:44,024 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-26 11:55:44,025 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-26 11:55:44,026 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-26 11:55:44,027 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-26 11:55:44,033 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-26 11:55:44,033 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-26 11:55:44,034 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-26 11:55:44,035 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-26 11:55:44,037 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-26 11:55:44,038 INFO L153 SettingsManager]: * Use SBE=true [2023-11-26 11:55:44,038 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-26 11:55:44,039 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-26 11:55:44,039 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-26 11:55:44,040 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-26 11:55:44,041 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-26 11:55:44,042 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-26 11:55:44,042 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-26 11:55:44,043 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-26 11:55:44,043 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-11-26 11:55:44,044 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-11-26 11:55:44,044 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-26 11:55:44,045 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-26 11:55:44,046 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-26 11:55:44,047 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-26 11:55:44,047 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-26 11:55:44,049 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-26 11:55:44,049 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-26 11:55:44,050 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-26 11:55:44,050 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-26 11:55:44,050 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-11-26 11:55:44,050 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-11-26 11:55:44,052 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-26 11:55:44,052 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-26 11:55:44,052 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-26 11:55:44,053 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-26 11:55:44,053 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-11-26 11:55:44,053 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_5ec37dfe-0b32-477f-82c3-86ba483f8af8/bin/uautomizer-verify-VRDe98Ueme/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ec37dfe-0b32-477f-82c3-86ba483f8af8/bin/uautomizer-verify-VRDe98Ueme Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ddb26eab16f240735f9d1465e4eb4848a506b7f6f359090de5f9df37aee37107 [2023-11-26 11:55:44,523 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-26 11:55:44,561 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-26 11:55:44,564 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-26 11:55:44,566 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-26 11:55:44,566 INFO L274 PluginConnector]: CDTParser initialized [2023-11-26 11:55:44,568 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ec37dfe-0b32-477f-82c3-86ba483f8af8/bin/uautomizer-verify-VRDe98Ueme/../../sv-benchmarks/c/busybox-1.22.0/usleep-2.i [2023-11-26 11:55:47,983 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-26 11:55:48,514 INFO L384 CDTParser]: Found 1 translation units. [2023-11-26 11:55:48,515 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ec37dfe-0b32-477f-82c3-86ba483f8af8/sv-benchmarks/c/busybox-1.22.0/usleep-2.i [2023-11-26 11:55:48,551 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ec37dfe-0b32-477f-82c3-86ba483f8af8/bin/uautomizer-verify-VRDe98Ueme/data/a8063b1df/62b130598492424f81f734658a954692/FLAGbe0adfdfa [2023-11-26 11:55:48,568 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ec37dfe-0b32-477f-82c3-86ba483f8af8/bin/uautomizer-verify-VRDe98Ueme/data/a8063b1df/62b130598492424f81f734658a954692 [2023-11-26 11:55:48,571 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-26 11:55:48,573 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-26 11:55:48,574 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-26 11:55:48,575 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-26 11:55:48,581 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-26 11:55:48,582 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 11:55:48" (1/1) ... [2023-11-26 11:55:48,583 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3f97028 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:55:48, skipping insertion in model container [2023-11-26 11:55:48,583 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 11:55:48" (1/1) ... [2023-11-26 11:55:48,714 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-26 11:55:50,308 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-26 11:55:50,341 INFO L199 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2023-11-26 11:55:50,366 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-26 11:55:50,502 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-26 11:55:50,513 INFO L202 MainTranslator]: Completed pre-run [2023-11-26 11:55:50,646 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-26 11:55:50,967 WARN L675 CHandler]: The function fflush is called, but not defined or handled by StandardFunctionHandler. [2023-11-26 11:55:50,968 WARN L675 CHandler]: The function strtoul is called, but not defined or handled by StandardFunctionHandler. [2023-11-26 11:55:50,976 INFO L206 MainTranslator]: Completed translation [2023-11-26 11:55:50,978 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:55:50 WrapperNode [2023-11-26 11:55:50,978 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-26 11:55:50,980 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-26 11:55:50,980 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-26 11:55:50,980 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-26 11:55:50,989 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:55:50" (1/1) ... [2023-11-26 11:55:51,078 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:55:50" (1/1) ... [2023-11-26 11:55:51,182 INFO L138 Inliner]: procedures = 612, calls = 177, calls flagged for inlining = 19, calls inlined = 17, statements flattened = 601 [2023-11-26 11:55:51,183 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-26 11:55:51,184 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-26 11:55:51,184 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-26 11:55:51,184 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-26 11:55:51,197 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:55:50" (1/1) ... [2023-11-26 11:55:51,197 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:55:50" (1/1) ... [2023-11-26 11:55:51,224 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:55:50" (1/1) ... [2023-11-26 11:55:51,254 WARN L109 MemorySlicer]: Omit memory slicing because it failed with the following exception: Unsupported: Memory array in LHS [2023-11-26 11:55:51,254 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:55:50" (1/1) ... [2023-11-26 11:55:51,255 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:55:50" (1/1) ... [2023-11-26 11:55:51,313 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:55:50" (1/1) ... [2023-11-26 11:55:51,327 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:55:50" (1/1) ... [2023-11-26 11:55:51,353 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:55:50" (1/1) ... [2023-11-26 11:55:51,360 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:55:50" (1/1) ... [2023-11-26 11:55:51,378 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-26 11:55:51,380 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-26 11:55:51,380 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-26 11:55:51,380 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-26 11:55:51,381 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:55:50" (1/1) ... [2023-11-26 11:55:51,387 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-26 11:55:51,399 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ec37dfe-0b32-477f-82c3-86ba483f8af8/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:55:51,415 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ec37dfe-0b32-477f-82c3-86ba483f8af8/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-26 11:55:51,417 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ec37dfe-0b32-477f-82c3-86ba483f8af8/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-26 11:55:51,446 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-26 11:55:51,446 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2023-11-26 11:55:51,446 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2023-11-26 11:55:51,447 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-26 11:55:51,447 INFO L130 BoogieDeclarations]: Found specification of procedure fflush [2023-11-26 11:55:51,447 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-26 11:55:51,447 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-26 11:55:51,447 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE8 [2023-11-26 11:55:51,448 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE2 [2023-11-26 11:55:51,448 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE4 [2023-11-26 11:55:51,448 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE1 [2023-11-26 11:55:51,448 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-26 11:55:51,448 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-26 11:55:51,449 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2023-11-26 11:55:51,449 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_strcpy [2023-11-26 11:55:51,449 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_strcpy [2023-11-26 11:55:51,449 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2023-11-26 11:55:51,451 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2023-11-26 11:55:51,452 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2023-11-26 11:55:51,452 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-26 11:55:51,452 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-26 11:55:51,452 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-26 11:55:51,452 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-26 11:55:51,454 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE8 [2023-11-26 11:55:51,454 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2023-11-26 11:55:51,455 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2023-11-26 11:55:51,455 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE4 [2023-11-26 11:55:51,455 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE2 [2023-11-26 11:55:51,455 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE1 [2023-11-26 11:55:51,455 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE8 [2023-11-26 11:55:51,456 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2023-11-26 11:55:51,456 INFO L130 BoogieDeclarations]: Found specification of procedure bb_error_msg_and_die [2023-11-26 11:55:51,456 INFO L138 BoogieDeclarations]: Found implementation of procedure bb_error_msg_and_die [2023-11-26 11:55:52,042 INFO L241 CfgBuilder]: Building ICFG [2023-11-26 11:55:52,053 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-26 11:55:59,694 INFO L282 CfgBuilder]: Performing block encoding [2023-11-26 11:55:59,825 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-26 11:55:59,826 INFO L309 CfgBuilder]: Removed 10 assume(true) statements. [2023-11-26 11:55:59,826 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 11:55:59 BoogieIcfgContainer [2023-11-26 11:55:59,826 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-26 11:55:59,829 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-26 11:55:59,829 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-26 11:55:59,832 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-26 11:55:59,833 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.11 11:55:48" (1/3) ... [2023-11-26 11:55:59,833 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@61dcf38a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 11:55:59, skipping insertion in model container [2023-11-26 11:55:59,833 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:55:50" (2/3) ... [2023-11-26 11:55:59,834 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@61dcf38a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 11:55:59, skipping insertion in model container [2023-11-26 11:55:59,834 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 11:55:59" (3/3) ... [2023-11-26 11:55:59,836 INFO L112 eAbstractionObserver]: Analyzing ICFG usleep-2.i [2023-11-26 11:55:59,857 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-26 11:55:59,857 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 177 error locations. [2023-11-26 11:55:59,936 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-26 11:55:59,948 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;@74b91cd8, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-26 11:55:59,948 INFO L358 AbstractCegarLoop]: Starting to check reachability of 177 error locations. [2023-11-26 11:55:59,957 INFO L276 IsEmpty]: Start isEmpty. Operand has 384 states, 193 states have (on average 2.1968911917098444) internal successors, (424), 370 states have internal predecessors, (424), 10 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2023-11-26 11:55:59,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2023-11-26 11:55:59,964 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:55:59,965 INFO L195 NwaCegarLoop]: trace histogram [1, 1] [2023-11-26 11:55:59,966 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [#Ultimate.C_strcpyErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE, #Ultimate.C_strcpyErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, #Ultimate.C_strcpyErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 174 more)] === [2023-11-26 11:55:59,972 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:55:59,973 INFO L85 PathProgramCache]: Analyzing trace with hash 25398, now seen corresponding path program 1 times [2023-11-26 11:55:59,989 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-26 11:55:59,989 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1411773065] [2023-11-26 11:55:59,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:55:59,990 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 [2023-11-26 11:55:59,991 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ec37dfe-0b32-477f-82c3-86ba483f8af8/bin/uautomizer-verify-VRDe98Ueme/mathsat [2023-11-26 11:55:59,998 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ec37dfe-0b32-477f-82c3-86ba483f8af8/bin/uautomizer-verify-VRDe98Ueme/mathsat -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) [2023-11-26 11:56:00,050 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ec37dfe-0b32-477f-82c3-86ba483f8af8/bin/uautomizer-verify-VRDe98Ueme/mathsat -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 [2023-11-26 11:56:00,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:56:00,234 INFO L262 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-26 11:56:00,239 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:56:00,310 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 [2023-11-26 11:56:00,331 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:56:00,331 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 11:56:00,332 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-26 11:56:00,332 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1411773065] [2023-11-26 11:56:00,334 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1411773065] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:56:00,335 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:56:00,335 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-26 11:56:00,338 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [689107831] [2023-11-26 11:56:00,339 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:56:00,346 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 11:56:00,346 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-26 11:56:00,376 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 11:56:00,377 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 11:56:00,381 INFO L87 Difference]: Start difference. First operand has 384 states, 193 states have (on average 2.1968911917098444) internal successors, (424), 370 states have internal predecessors, (424), 10 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) Second operand has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:56:02,294 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:56:02,295 INFO L93 Difference]: Finished difference Result 396 states and 444 transitions. [2023-11-26 11:56:02,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 11:56:02,299 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 2 [2023-11-26 11:56:02,300 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:56:02,314 INFO L225 Difference]: With dead ends: 396 [2023-11-26 11:56:02,315 INFO L226 Difference]: Without dead ends: 395 [2023-11-26 11:56:02,316 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 11:56:02,320 INFO L413 NwaCegarLoop]: 317 mSDtfsCounter, 157 mSDsluCounter, 154 mSDsCounter, 0 mSdLazyCounter, 232 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 158 SdHoareTripleChecker+Valid, 471 SdHoareTripleChecker+Invalid, 238 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 232 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2023-11-26 11:56:02,321 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [158 Valid, 471 Invalid, 238 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 232 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2023-11-26 11:56:02,338 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 395 states. [2023-11-26 11:56:02,384 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 395 to 377. [2023-11-26 11:56:02,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 377 states, 191 states have (on average 2.1256544502617802) internal successors, (406), 365 states have internal predecessors, (406), 10 states have call successors, (10), 3 states have call predecessors, (10), 2 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2023-11-26 11:56:02,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 377 states to 377 states and 424 transitions. [2023-11-26 11:56:02,393 INFO L78 Accepts]: Start accepts. Automaton has 377 states and 424 transitions. Word has length 2 [2023-11-26 11:56:02,393 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:56:02,393 INFO L495 AbstractCegarLoop]: Abstraction has 377 states and 424 transitions. [2023-11-26 11:56:02,394 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:56:02,394 INFO L276 IsEmpty]: Start isEmpty. Operand 377 states and 424 transitions. [2023-11-26 11:56:02,394 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2023-11-26 11:56:02,395 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:56:02,395 INFO L195 NwaCegarLoop]: trace histogram [1, 1] [2023-11-26 11:56:02,403 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ec37dfe-0b32-477f-82c3-86ba483f8af8/bin/uautomizer-verify-VRDe98Ueme/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2023-11-26 11:56:02,603 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ec37dfe-0b32-477f-82c3-86ba483f8af8/bin/uautomizer-verify-VRDe98Ueme/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-26 11:56:02,603 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [#Ultimate.C_strcpyErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE, #Ultimate.C_strcpyErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, #Ultimate.C_strcpyErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 174 more)] === [2023-11-26 11:56:02,604 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:56:02,604 INFO L85 PathProgramCache]: Analyzing trace with hash 25399, now seen corresponding path program 1 times [2023-11-26 11:56:02,604 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-26 11:56:02,605 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [112654197] [2023-11-26 11:56:02,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:56:02,605 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 [2023-11-26 11:56:02,605 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ec37dfe-0b32-477f-82c3-86ba483f8af8/bin/uautomizer-verify-VRDe98Ueme/mathsat [2023-11-26 11:56:02,611 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ec37dfe-0b32-477f-82c3-86ba483f8af8/bin/uautomizer-verify-VRDe98Ueme/mathsat -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) [2023-11-26 11:56:02,631 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ec37dfe-0b32-477f-82c3-86ba483f8af8/bin/uautomizer-verify-VRDe98Ueme/mathsat -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 [2023-11-26 11:56:02,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:56:02,829 INFO L262 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-26 11:56:02,830 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:56:02,847 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 [2023-11-26 11:56:02,873 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:56:02,873 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 11:56:02,874 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-26 11:56:02,874 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [112654197] [2023-11-26 11:56:02,874 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [112654197] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:56:02,875 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:56:02,875 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-26 11:56:02,875 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1454959830] [2023-11-26 11:56:02,875 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:56:02,876 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 11:56:02,877 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-26 11:56:02,878 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 11:56:02,878 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 11:56:02,878 INFO L87 Difference]: Start difference. First operand 377 states and 424 transitions. Second operand has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:56:05,583 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:56:05,584 INFO L93 Difference]: Finished difference Result 376 states and 423 transitions. [2023-11-26 11:56:05,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 11:56:05,586 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 2 [2023-11-26 11:56:05,586 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:56:05,588 INFO L225 Difference]: With dead ends: 376 [2023-11-26 11:56:05,589 INFO L226 Difference]: Without dead ends: 376 [2023-11-26 11:56:05,589 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 11:56:05,590 INFO L413 NwaCegarLoop]: 375 mSDtfsCounter, 9 mSDsluCounter, 235 mSDsCounter, 0 mSdLazyCounter, 225 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 610 SdHoareTripleChecker+Invalid, 225 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 225 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2023-11-26 11:56:05,591 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 610 Invalid, 225 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 225 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2023-11-26 11:56:05,593 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 376 states. [2023-11-26 11:56:05,611 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 376 to 376. [2023-11-26 11:56:05,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 376 states, 191 states have (on average 2.1204188481675392) internal successors, (405), 364 states have internal predecessors, (405), 10 states have call successors, (10), 3 states have call predecessors, (10), 2 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2023-11-26 11:56:05,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 376 states to 376 states and 423 transitions. [2023-11-26 11:56:05,616 INFO L78 Accepts]: Start accepts. Automaton has 376 states and 423 transitions. Word has length 2 [2023-11-26 11:56:05,616 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:56:05,616 INFO L495 AbstractCegarLoop]: Abstraction has 376 states and 423 transitions. [2023-11-26 11:56:05,616 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:56:05,617 INFO L276 IsEmpty]: Start isEmpty. Operand 376 states and 423 transitions. [2023-11-26 11:56:05,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2023-11-26 11:56:05,617 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:56:05,617 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2023-11-26 11:56:05,627 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ec37dfe-0b32-477f-82c3-86ba483f8af8/bin/uautomizer-verify-VRDe98Ueme/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Ended with exit code 0 [2023-11-26 11:56:05,822 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ec37dfe-0b32-477f-82c3-86ba483f8af8/bin/uautomizer-verify-VRDe98Ueme/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-26 11:56:05,822 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [#Ultimate.C_strcpyErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE, #Ultimate.C_strcpyErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, #Ultimate.C_strcpyErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 174 more)] === [2023-11-26 11:56:05,823 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:56:05,823 INFO L85 PathProgramCache]: Analyzing trace with hash 24790939, now seen corresponding path program 1 times [2023-11-26 11:56:05,824 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-26 11:56:05,825 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1596657600] [2023-11-26 11:56:05,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:56:05,825 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 [2023-11-26 11:56:05,826 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ec37dfe-0b32-477f-82c3-86ba483f8af8/bin/uautomizer-verify-VRDe98Ueme/mathsat [2023-11-26 11:56:05,827 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ec37dfe-0b32-477f-82c3-86ba483f8af8/bin/uautomizer-verify-VRDe98Ueme/mathsat -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) [2023-11-26 11:56:05,831 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ec37dfe-0b32-477f-82c3-86ba483f8af8/bin/uautomizer-verify-VRDe98Ueme/mathsat -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 [2023-11-26 11:56:06,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:56:06,033 INFO L262 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-26 11:56:06,035 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:56:06,049 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 [2023-11-26 11:56:06,156 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:56:06,157 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 11:56:06,157 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-26 11:56:06,157 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1596657600] [2023-11-26 11:56:06,157 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1596657600] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:56:06,157 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:56:06,157 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-26 11:56:06,158 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [254942642] [2023-11-26 11:56:06,158 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:56:06,158 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-26 11:56:06,158 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-26 11:56:06,159 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-26 11:56:06,159 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-26 11:56:06,159 INFO L87 Difference]: Start difference. First operand 376 states and 423 transitions. Second operand has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:56:09,657 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:56:09,657 INFO L93 Difference]: Finished difference Result 378 states and 425 transitions. [2023-11-26 11:56:09,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-26 11:56:09,660 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2023-11-26 11:56:09,660 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:56:09,663 INFO L225 Difference]: With dead ends: 378 [2023-11-26 11:56:09,663 INFO L226 Difference]: Without dead ends: 378 [2023-11-26 11:56:09,663 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-26 11:56:09,665 INFO L413 NwaCegarLoop]: 374 mSDtfsCounter, 9 mSDsluCounter, 471 mSDsCounter, 0 mSdLazyCounter, 412 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 845 SdHoareTripleChecker+Invalid, 413 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 412 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2023-11-26 11:56:09,665 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 845 Invalid, 413 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 412 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time] [2023-11-26 11:56:09,667 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 378 states. [2023-11-26 11:56:09,684 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 378 to 378. [2023-11-26 11:56:09,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 378 states, 193 states have (on average 2.1088082901554404) internal successors, (407), 366 states have internal predecessors, (407), 10 states have call successors, (10), 3 states have call predecessors, (10), 2 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2023-11-26 11:56:09,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 378 states to 378 states and 425 transitions. [2023-11-26 11:56:09,689 INFO L78 Accepts]: Start accepts. Automaton has 378 states and 425 transitions. Word has length 4 [2023-11-26 11:56:09,689 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:56:09,690 INFO L495 AbstractCegarLoop]: Abstraction has 378 states and 425 transitions. [2023-11-26 11:56:09,690 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:56:09,690 INFO L276 IsEmpty]: Start isEmpty. Operand 378 states and 425 transitions. [2023-11-26 11:56:09,691 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2023-11-26 11:56:09,691 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:56:09,691 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1] [2023-11-26 11:56:09,700 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ec37dfe-0b32-477f-82c3-86ba483f8af8/bin/uautomizer-verify-VRDe98Ueme/mathsat -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 [2023-11-26 11:56:09,896 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ec37dfe-0b32-477f-82c3-86ba483f8af8/bin/uautomizer-verify-VRDe98Ueme/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-26 11:56:09,897 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [#Ultimate.C_strcpyErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE, #Ultimate.C_strcpyErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, #Ultimate.C_strcpyErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 174 more)] === [2023-11-26 11:56:09,897 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:56:09,897 INFO L85 PathProgramCache]: Analyzing trace with hash -1945335624, now seen corresponding path program 1 times [2023-11-26 11:56:09,898 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-26 11:56:09,899 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [367691362] [2023-11-26 11:56:09,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:56:09,899 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 [2023-11-26 11:56:09,899 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ec37dfe-0b32-477f-82c3-86ba483f8af8/bin/uautomizer-verify-VRDe98Ueme/mathsat [2023-11-26 11:56:09,901 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ec37dfe-0b32-477f-82c3-86ba483f8af8/bin/uautomizer-verify-VRDe98Ueme/mathsat -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) [2023-11-26 11:56:09,936 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ec37dfe-0b32-477f-82c3-86ba483f8af8/bin/uautomizer-verify-VRDe98Ueme/mathsat -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 [2023-11-26 11:56:10,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:56:10,122 INFO L262 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-26 11:56:10,124 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:56:10,142 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 [2023-11-26 11:56:10,346 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:56:10,346 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 11:56:11,259 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:56:11,259 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-26 11:56:11,259 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [367691362] [2023-11-26 11:56:11,259 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [367691362] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-26 11:56:11,259 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-26 11:56:11,260 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 6 [2023-11-26 11:56:11,260 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [756331171] [2023-11-26 11:56:11,260 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-26 11:56:11,260 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-26 11:56:11,261 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-26 11:56:11,261 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-26 11:56:11,261 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-11-26 11:56:11,262 INFO L87 Difference]: Start difference. First operand 378 states and 425 transitions. Second operand has 8 states, 7 states have (on average 1.7142857142857142) internal successors, (12), 7 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:56:24,148 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:56:24,149 INFO L93 Difference]: Finished difference Result 380 states and 427 transitions. [2023-11-26 11:56:24,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-26 11:56:24,153 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 1.7142857142857142) internal successors, (12), 7 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2023-11-26 11:56:24,153 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:56:24,156 INFO L225 Difference]: With dead ends: 380 [2023-11-26 11:56:24,156 INFO L226 Difference]: Without dead ends: 380 [2023-11-26 11:56:24,156 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2023-11-26 11:56:24,157 INFO L413 NwaCegarLoop]: 373 mSDtfsCounter, 10 mSDsluCounter, 942 mSDsCounter, 0 mSdLazyCounter, 777 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 1315 SdHoareTripleChecker+Invalid, 781 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 777 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.7s IncrementalHoareTripleChecker+Time [2023-11-26 11:56:24,158 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 1315 Invalid, 781 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 777 Invalid, 0 Unknown, 0 Unchecked, 12.7s Time] [2023-11-26 11:56:24,160 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 380 states. [2023-11-26 11:56:24,171 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 380 to 380. [2023-11-26 11:56:24,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 380 states, 196 states have (on average 2.086734693877551) internal successors, (409), 368 states have internal predecessors, (409), 10 states have call successors, (10), 3 states have call predecessors, (10), 2 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2023-11-26 11:56:24,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 380 states to 380 states and 427 transitions. [2023-11-26 11:56:24,176 INFO L78 Accepts]: Start accepts. Automaton has 380 states and 427 transitions. Word has length 6 [2023-11-26 11:56:24,176 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:56:24,176 INFO L495 AbstractCegarLoop]: Abstraction has 380 states and 427 transitions. [2023-11-26 11:56:24,176 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 1.7142857142857142) internal successors, (12), 7 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:56:24,177 INFO L276 IsEmpty]: Start isEmpty. Operand 380 states and 427 transitions. [2023-11-26 11:56:24,177 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2023-11-26 11:56:24,177 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:56:24,177 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1] [2023-11-26 11:56:24,191 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ec37dfe-0b32-477f-82c3-86ba483f8af8/bin/uautomizer-verify-VRDe98Ueme/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2023-11-26 11:56:24,384 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ec37dfe-0b32-477f-82c3-86ba483f8af8/bin/uautomizer-verify-VRDe98Ueme/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-26 11:56:24,384 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [#Ultimate.C_strcpyErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE, #Ultimate.C_strcpyErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, #Ultimate.C_strcpyErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 174 more)] === [2023-11-26 11:56:24,385 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:56:24,385 INFO L85 PathProgramCache]: Analyzing trace with hash 74891256, now seen corresponding path program 1 times [2023-11-26 11:56:24,386 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-26 11:56:24,386 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1252348597] [2023-11-26 11:56:24,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:56:24,386 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 [2023-11-26 11:56:24,386 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ec37dfe-0b32-477f-82c3-86ba483f8af8/bin/uautomizer-verify-VRDe98Ueme/mathsat [2023-11-26 11:56:24,389 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ec37dfe-0b32-477f-82c3-86ba483f8af8/bin/uautomizer-verify-VRDe98Ueme/mathsat -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) [2023-11-26 11:56:24,394 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ec37dfe-0b32-477f-82c3-86ba483f8af8/bin/uautomizer-verify-VRDe98Ueme/mathsat -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 [2023-11-26 11:56:24,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:56:24,628 INFO L262 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-26 11:56:24,629 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:56:24,743 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:56:24,744 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 11:56:24,942 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:56:24,943 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-26 11:56:24,943 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1252348597] [2023-11-26 11:56:24,943 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1252348597] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-26 11:56:24,943 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-26 11:56:24,943 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2023-11-26 11:56:24,944 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [326091285] [2023-11-26 11:56:24,944 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-26 11:56:24,944 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-26 11:56:24,944 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-26 11:56:24,945 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-26 11:56:24,945 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2023-11-26 11:56:24,945 INFO L87 Difference]: Start difference. First operand 380 states and 427 transitions. Second operand has 10 states, 10 states have (on average 1.9) internal successors, (19), 10 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:56:27,234 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:56:27,234 INFO L93 Difference]: Finished difference Result 390 states and 437 transitions. [2023-11-26 11:56:27,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-26 11:56:27,244 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 1.9) internal successors, (19), 10 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2023-11-26 11:56:27,245 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:56:27,247 INFO L225 Difference]: With dead ends: 390 [2023-11-26 11:56:27,247 INFO L226 Difference]: Without dead ends: 390 [2023-11-26 11:56:27,248 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=63, Invalid=93, Unknown=0, NotChecked=0, Total=156 [2023-11-26 11:56:27,249 INFO L413 NwaCegarLoop]: 377 mSDtfsCounter, 5 mSDsluCounter, 1500 mSDsCounter, 0 mSdLazyCounter, 262 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 1877 SdHoareTripleChecker+Invalid, 264 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 262 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2023-11-26 11:56:27,249 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 1877 Invalid, 264 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 262 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2023-11-26 11:56:27,251 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 390 states. [2023-11-26 11:56:27,259 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 390 to 390. [2023-11-26 11:56:27,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 390 states, 206 states have (on average 2.033980582524272) internal successors, (419), 378 states have internal predecessors, (419), 10 states have call successors, (10), 3 states have call predecessors, (10), 2 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2023-11-26 11:56:27,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 390 states to 390 states and 437 transitions. [2023-11-26 11:56:27,264 INFO L78 Accepts]: Start accepts. Automaton has 390 states and 437 transitions. Word has length 11 [2023-11-26 11:56:27,264 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:56:27,264 INFO L495 AbstractCegarLoop]: Abstraction has 390 states and 437 transitions. [2023-11-26 11:56:27,265 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 1.9) internal successors, (19), 10 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:56:27,265 INFO L276 IsEmpty]: Start isEmpty. Operand 390 states and 437 transitions. [2023-11-26 11:56:27,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2023-11-26 11:56:27,266 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:56:27,266 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 1, 1, 1, 1, 1] [2023-11-26 11:56:27,276 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ec37dfe-0b32-477f-82c3-86ba483f8af8/bin/uautomizer-verify-VRDe98Ueme/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2023-11-26 11:56:27,472 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ec37dfe-0b32-477f-82c3-86ba483f8af8/bin/uautomizer-verify-VRDe98Ueme/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-26 11:56:27,472 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [#Ultimate.C_strcpyErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE, #Ultimate.C_strcpyErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, #Ultimate.C_strcpyErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 174 more)] === [2023-11-26 11:56:27,473 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:56:27,473 INFO L85 PathProgramCache]: Analyzing trace with hash -1114114617, now seen corresponding path program 2 times [2023-11-26 11:56:27,484 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-26 11:56:27,484 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [612110073] [2023-11-26 11:56:27,485 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-26 11:56:27,485 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 [2023-11-26 11:56:27,485 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ec37dfe-0b32-477f-82c3-86ba483f8af8/bin/uautomizer-verify-VRDe98Ueme/mathsat [2023-11-26 11:56:27,486 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ec37dfe-0b32-477f-82c3-86ba483f8af8/bin/uautomizer-verify-VRDe98Ueme/mathsat -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) [2023-11-26 11:56:27,499 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ec37dfe-0b32-477f-82c3-86ba483f8af8/bin/uautomizer-verify-VRDe98Ueme/mathsat -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 [2023-11-26 11:56:27,751 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-26 11:56:27,751 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-26 11:56:27,755 INFO L262 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-26 11:56:27,758 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:56:27,831 INFO L349 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2023-11-26 11:56:27,831 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 20 [2023-11-26 11:56:28,416 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2023-11-26 11:56:28,416 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 11:56:28,416 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-26 11:56:28,416 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [612110073] [2023-11-26 11:56:28,416 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [612110073] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:56:28,416 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:56:28,417 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-26 11:56:28,417 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1390561793] [2023-11-26 11:56:28,417 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:56:28,417 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 11:56:28,417 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-26 11:56:28,418 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 11:56:28,418 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 11:56:28,418 INFO L87 Difference]: Start difference. First operand 390 states and 437 transitions. Second operand has 3 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:56:31,582 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:56:31,582 INFO L93 Difference]: Finished difference Result 528 states and 591 transitions. [2023-11-26 11:56:31,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 11:56:31,585 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2023-11-26 11:56:31,585 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:56:31,593 INFO L225 Difference]: With dead ends: 528 [2023-11-26 11:56:31,594 INFO L226 Difference]: Without dead ends: 528 [2023-11-26 11:56:31,594 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 11:56:31,597 INFO L413 NwaCegarLoop]: 280 mSDtfsCounter, 368 mSDsluCounter, 109 mSDsCounter, 0 mSdLazyCounter, 267 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 368 SdHoareTripleChecker+Valid, 389 SdHoareTripleChecker+Invalid, 276 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 267 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2023-11-26 11:56:31,599 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [368 Valid, 389 Invalid, 276 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 267 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2023-11-26 11:56:31,602 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 528 states. [2023-11-26 11:56:31,617 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 528 to 446. [2023-11-26 11:56:31,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 446 states, 257 states have (on average 2.054474708171206) internal successors, (528), 428 states have internal predecessors, (528), 14 states have call successors, (14), 5 states have call predecessors, (14), 4 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2023-11-26 11:56:31,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 446 states to 446 states and 554 transitions. [2023-11-26 11:56:31,622 INFO L78 Accepts]: Start accepts. Automaton has 446 states and 554 transitions. Word has length 21 [2023-11-26 11:56:31,622 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:56:31,622 INFO L495 AbstractCegarLoop]: Abstraction has 446 states and 554 transitions. [2023-11-26 11:56:31,623 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:56:31,640 INFO L276 IsEmpty]: Start isEmpty. Operand 446 states and 554 transitions. [2023-11-26 11:56:31,641 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2023-11-26 11:56:31,641 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:56:31,641 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 1, 1, 1, 1, 1] [2023-11-26 11:56:31,653 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ec37dfe-0b32-477f-82c3-86ba483f8af8/bin/uautomizer-verify-VRDe98Ueme/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Ended with exit code 0 [2023-11-26 11:56:31,846 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ec37dfe-0b32-477f-82c3-86ba483f8af8/bin/uautomizer-verify-VRDe98Ueme/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-26 11:56:31,846 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [#Ultimate.C_strcpyErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE, #Ultimate.C_strcpyErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, #Ultimate.C_strcpyErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 174 more)] === [2023-11-26 11:56:31,847 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:56:31,847 INFO L85 PathProgramCache]: Analyzing trace with hash -1114114616, now seen corresponding path program 1 times [2023-11-26 11:56:31,848 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-26 11:56:31,848 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [741735575] [2023-11-26 11:56:31,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:56:31,848 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 [2023-11-26 11:56:31,848 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ec37dfe-0b32-477f-82c3-86ba483f8af8/bin/uautomizer-verify-VRDe98Ueme/mathsat [2023-11-26 11:56:31,850 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ec37dfe-0b32-477f-82c3-86ba483f8af8/bin/uautomizer-verify-VRDe98Ueme/mathsat -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) [2023-11-26 11:56:31,852 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ec37dfe-0b32-477f-82c3-86ba483f8af8/bin/uautomizer-verify-VRDe98Ueme/mathsat -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 [2023-11-26 11:56:32,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:56:32,168 INFO L262 TraceCheckSpWp]: Trace formula consists of 202 conjuncts, 10 conjunts are in the unsatisfiable core [2023-11-26 11:56:32,170 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:56:32,516 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:56:32,516 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 11:56:33,138 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:56:33,138 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-26 11:56:33,139 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [741735575] [2023-11-26 11:56:33,139 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [741735575] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-26 11:56:33,139 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-26 11:56:33,139 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 20 [2023-11-26 11:56:33,139 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2087904354] [2023-11-26 11:56:33,139 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-26 11:56:33,140 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-11-26 11:56:33,140 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-26 11:56:33,141 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-11-26 11:56:33,142 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=290, Unknown=0, NotChecked=0, Total=380 [2023-11-26 11:56:33,142 INFO L87 Difference]: Start difference. First operand 446 states and 554 transitions. Second operand has 20 states, 20 states have (on average 1.95) internal successors, (39), 20 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)