./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/busybox-1.22.0/whoami-incomplete-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_b1b3f1ff-3b50-492c-9aec-eeafafafee49/bin/uautomizer-verify-VRDe98Ueme/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1b3f1ff-3b50-492c-9aec-eeafafafee49/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_b1b3f1ff-3b50-492c-9aec-eeafafafee49/bin/uautomizer-verify-VRDe98Ueme/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1b3f1ff-3b50-492c-9aec-eeafafafee49/bin/uautomizer-verify-VRDe98Ueme/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/busybox-1.22.0/whoami-incomplete-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1b3f1ff-3b50-492c-9aec-eeafafafee49/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_b1b3f1ff-3b50-492c-9aec-eeafafafee49/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 73081b3fa7e8ac6772d35cbb49ddbf2b46d162637b371c81319141218fe98c6a --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-26 10:41:48,408 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-26 10:41:48,558 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1b3f1ff-3b50-492c-9aec-eeafafafee49/bin/uautomizer-verify-VRDe98Ueme/config/svcomp-DerefFreeMemtrack-64bit-Automizer_Default.epf [2023-11-26 10:41:48,564 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-26 10:41:48,565 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-26 10:41:48,610 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-26 10:41:48,611 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-26 10:41:48,612 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-26 10:41:48,613 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-26 10:41:48,614 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-26 10:41:48,615 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-26 10:41:48,615 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-26 10:41:48,617 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-26 10:41:48,617 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-26 10:41:48,618 INFO L153 SettingsManager]: * Use SBE=true [2023-11-26 10:41:48,619 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-26 10:41:48,619 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-26 10:41:48,620 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-26 10:41:48,621 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-26 10:41:48,621 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-26 10:41:48,622 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-26 10:41:48,623 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-26 10:41:48,623 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-26 10:41:48,624 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-26 10:41:48,624 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-26 10:41:48,625 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-26 10:41:48,625 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-26 10:41:48,626 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-26 10:41:48,627 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-26 10:41:48,627 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-26 10:41:48,628 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-26 10:41:48,628 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-26 10:41:48,629 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-26 10:41:48,629 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-26 10:41:48,630 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-26 10:41:48,631 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-26 10:41:48,631 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-26 10:41:48,632 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-26 10:41:48,632 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_b1b3f1ff-3b50-492c-9aec-eeafafafee49/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1b3f1ff-3b50-492c-9aec-eeafafafee49/bin/uautomizer-verify-VRDe98Ueme Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 73081b3fa7e8ac6772d35cbb49ddbf2b46d162637b371c81319141218fe98c6a [2023-11-26 10:41:49,010 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-26 10:41:49,036 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-26 10:41:49,040 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-26 10:41:49,041 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-26 10:41:49,042 INFO L274 PluginConnector]: CDTParser initialized [2023-11-26 10:41:49,044 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1b3f1ff-3b50-492c-9aec-eeafafafee49/bin/uautomizer-verify-VRDe98Ueme/../../sv-benchmarks/c/busybox-1.22.0/whoami-incomplete-2.i [2023-11-26 10:41:52,280 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-26 10:41:52,919 INFO L384 CDTParser]: Found 1 translation units. [2023-11-26 10:41:52,919 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1b3f1ff-3b50-492c-9aec-eeafafafee49/sv-benchmarks/c/busybox-1.22.0/whoami-incomplete-2.i [2023-11-26 10:41:52,976 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1b3f1ff-3b50-492c-9aec-eeafafafee49/bin/uautomizer-verify-VRDe98Ueme/data/313b59995/34042b43ec50486aa5e9143fe5b6b19f/FLAG5c2eae6f2 [2023-11-26 10:41:52,999 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1b3f1ff-3b50-492c-9aec-eeafafafee49/bin/uautomizer-verify-VRDe98Ueme/data/313b59995/34042b43ec50486aa5e9143fe5b6b19f [2023-11-26 10:41:53,008 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-26 10:41:53,012 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-26 10:41:53,014 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-26 10:41:53,015 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-26 10:41:53,022 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-26 10:41:53,023 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 10:41:53" (1/1) ... [2023-11-26 10:41:53,025 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@69fcb3e6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:41:53, skipping insertion in model container [2023-11-26 10:41:53,025 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 10:41:53" (1/1) ... [2023-11-26 10:41:53,126 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-26 10:41:54,731 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-26 10:41:54,778 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 10:41:54,779 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@7b6a9924 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:41:54, skipping insertion in model container [2023-11-26 10:41:54,779 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-26 10:41:54,780 INFO L186 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2023-11-26 10:41:54,782 INFO L158 Benchmark]: Toolchain (without parser) took 1768.95ms. Allocated memory is still 153.1MB. Free memory was 119.0MB in the beginning and 91.7MB in the end (delta: 27.3MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. [2023-11-26 10:41:54,783 INFO L158 Benchmark]: CDTParser took 0.37ms. Allocated memory is still 119.5MB. Free memory is still 92.6MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-26 10:41:54,784 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1765.17ms. Allocated memory is still 153.1MB. Free memory was 118.3MB in the beginning and 91.7MB in the end (delta: 26.6MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. [2023-11-26 10:41:54,786 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.37ms. Allocated memory is still 119.5MB. Free memory is still 92.6MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1765.17ms. Allocated memory is still 153.1MB. Free memory was 118.3MB in the beginning and 91.7MB in the end (delta: 26.6MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 2372]: 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_b1b3f1ff-3b50-492c-9aec-eeafafafee49/bin/uautomizer-verify-VRDe98Ueme/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1b3f1ff-3b50-492c-9aec-eeafafafee49/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_b1b3f1ff-3b50-492c-9aec-eeafafafee49/bin/uautomizer-verify-VRDe98Ueme/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1b3f1ff-3b50-492c-9aec-eeafafafee49/bin/uautomizer-verify-VRDe98Ueme/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/busybox-1.22.0/whoami-incomplete-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1b3f1ff-3b50-492c-9aec-eeafafafee49/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_b1b3f1ff-3b50-492c-9aec-eeafafafee49/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 73081b3fa7e8ac6772d35cbb49ddbf2b46d162637b371c81319141218fe98c6a --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-26 10:41:57,805 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-26 10:41:57,961 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1b3f1ff-3b50-492c-9aec-eeafafafee49/bin/uautomizer-verify-VRDe98Ueme/config/svcomp-DerefFreeMemtrack-64bit-Automizer_Bitvector.epf [2023-11-26 10:41:57,971 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-26 10:41:57,972 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-26 10:41:58,041 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-26 10:41:58,043 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-26 10:41:58,044 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-26 10:41:58,045 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-26 10:41:58,051 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-26 10:41:58,052 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-26 10:41:58,053 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-26 10:41:58,054 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-26 10:41:58,056 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-26 10:41:58,056 INFO L153 SettingsManager]: * Use SBE=true [2023-11-26 10:41:58,057 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-26 10:41:58,057 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-26 10:41:58,058 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-26 10:41:58,059 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-26 10:41:58,060 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-26 10:41:58,061 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-26 10:41:58,061 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-26 10:41:58,062 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-26 10:41:58,062 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-11-26 10:41:58,063 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-11-26 10:41:58,063 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-26 10:41:58,064 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-26 10:41:58,065 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-26 10:41:58,066 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-26 10:41:58,066 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-26 10:41:58,068 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-26 10:41:58,069 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-26 10:41:58,069 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-26 10:41:58,070 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-26 10:41:58,070 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-11-26 10:41:58,070 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-11-26 10:41:58,072 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-26 10:41:58,072 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-26 10:41:58,072 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-26 10:41:58,073 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-26 10:41:58,073 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-11-26 10:41:58,073 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_b1b3f1ff-3b50-492c-9aec-eeafafafee49/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1b3f1ff-3b50-492c-9aec-eeafafafee49/bin/uautomizer-verify-VRDe98Ueme Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 73081b3fa7e8ac6772d35cbb49ddbf2b46d162637b371c81319141218fe98c6a [2023-11-26 10:41:58,579 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-26 10:41:58,620 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-26 10:41:58,624 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-26 10:41:58,626 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-26 10:41:58,626 INFO L274 PluginConnector]: CDTParser initialized [2023-11-26 10:41:58,628 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1b3f1ff-3b50-492c-9aec-eeafafafee49/bin/uautomizer-verify-VRDe98Ueme/../../sv-benchmarks/c/busybox-1.22.0/whoami-incomplete-2.i [2023-11-26 10:42:02,209 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-26 10:42:02,818 INFO L384 CDTParser]: Found 1 translation units. [2023-11-26 10:42:02,819 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1b3f1ff-3b50-492c-9aec-eeafafafee49/sv-benchmarks/c/busybox-1.22.0/whoami-incomplete-2.i [2023-11-26 10:42:02,866 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1b3f1ff-3b50-492c-9aec-eeafafafee49/bin/uautomizer-verify-VRDe98Ueme/data/bb5fd0080/c3cbb421c57e447e87538d5bc2d86fdc/FLAGb04fcc96c [2023-11-26 10:42:02,892 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1b3f1ff-3b50-492c-9aec-eeafafafee49/bin/uautomizer-verify-VRDe98Ueme/data/bb5fd0080/c3cbb421c57e447e87538d5bc2d86fdc [2023-11-26 10:42:02,898 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-26 10:42:02,900 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-26 10:42:02,905 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-26 10:42:02,905 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-26 10:42:02,912 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-26 10:42:02,913 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 10:42:02" (1/1) ... [2023-11-26 10:42:02,914 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7326a5e7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:42:02, skipping insertion in model container [2023-11-26 10:42:02,915 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 10:42:02" (1/1) ... [2023-11-26 10:42:03,046 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-26 10:42:04,694 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-26 10:42:04,750 INFO L199 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2023-11-26 10:42:04,776 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-26 10:42:04,972 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-26 10:42:04,988 INFO L202 MainTranslator]: Completed pre-run [2023-11-26 10:42:05,122 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-26 10:42:05,344 WARN L675 CHandler]: The function fflush is called, but not defined or handled by StandardFunctionHandler. [2023-11-26 10:42:05,344 WARN L675 CHandler]: The function puts is called, but not defined or handled by StandardFunctionHandler. [2023-11-26 10:42:05,352 INFO L206 MainTranslator]: Completed translation [2023-11-26 10:42:05,352 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:42:05 WrapperNode [2023-11-26 10:42:05,352 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-26 10:42:05,353 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-26 10:42:05,353 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-26 10:42:05,353 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-26 10:42:05,359 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:42:05" (1/1) ... [2023-11-26 10:42:05,416 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:42:05" (1/1) ... [2023-11-26 10:42:05,473 INFO L138 Inliner]: procedures = 627, calls = 174, calls flagged for inlining = 19, calls inlined = 17, statements flattened = 511 [2023-11-26 10:42:05,474 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-26 10:42:05,474 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-26 10:42:05,475 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-26 10:42:05,475 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-26 10:42:05,500 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:42:05" (1/1) ... [2023-11-26 10:42:05,501 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:42:05" (1/1) ... [2023-11-26 10:42:05,525 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:42:05" (1/1) ... [2023-11-26 10:42:05,560 WARN L109 MemorySlicer]: Omit memory slicing because it failed with the following exception: Unsupported: Memory array in LHS [2023-11-26 10:42:05,562 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:42:05" (1/1) ... [2023-11-26 10:42:05,563 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:42:05" (1/1) ... [2023-11-26 10:42:05,626 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:42:05" (1/1) ... [2023-11-26 10:42:05,645 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:42:05" (1/1) ... [2023-11-26 10:42:05,657 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:42:05" (1/1) ... [2023-11-26 10:42:05,679 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:42:05" (1/1) ... [2023-11-26 10:42:05,691 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-26 10:42:05,692 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-26 10:42:05,693 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-26 10:42:05,693 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-26 10:42:05,694 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:42:05" (1/1) ... [2023-11-26 10:42:05,705 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-26 10:42:05,719 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1b3f1ff-3b50-492c-9aec-eeafafafee49/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 10:42:05,737 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1b3f1ff-3b50-492c-9aec-eeafafafee49/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-26 10:42:05,745 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1b3f1ff-3b50-492c-9aec-eeafafafee49/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-26 10:42:05,788 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-26 10:42:05,789 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2023-11-26 10:42:05,789 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2023-11-26 10:42:05,789 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-26 10:42:05,789 INFO L130 BoogieDeclarations]: Found specification of procedure fflush [2023-11-26 10:42:05,789 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-26 10:42:05,789 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-26 10:42:05,791 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE8 [2023-11-26 10:42:05,792 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE2 [2023-11-26 10:42:05,792 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE4 [2023-11-26 10:42:05,792 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE1 [2023-11-26 10:42:05,793 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-26 10:42:05,793 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-26 10:42:05,793 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2023-11-26 10:42:05,793 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_strcpy [2023-11-26 10:42:05,793 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_strcpy [2023-11-26 10:42:05,794 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2023-11-26 10:42:05,795 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2023-11-26 10:42:05,795 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2023-11-26 10:42:05,795 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-26 10:42:05,795 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-26 10:42:05,795 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-26 10:42:05,796 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-26 10:42:05,797 INFO L130 BoogieDeclarations]: Found specification of procedure fflush_all [2023-11-26 10:42:05,797 INFO L138 BoogieDeclarations]: Found implementation of procedure fflush_all [2023-11-26 10:42:05,797 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2023-11-26 10:42:05,797 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2023-11-26 10:42:05,798 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-11-26 10:42:05,798 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE4 [2023-11-26 10:42:05,798 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE2 [2023-11-26 10:42:05,799 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE1 [2023-11-26 10:42:05,799 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE8 [2023-11-26 10:42:05,799 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2023-11-26 10:42:06,274 INFO L241 CfgBuilder]: Building ICFG [2023-11-26 10:42:06,279 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-26 10:42:13,159 INFO L282 CfgBuilder]: Performing block encoding [2023-11-26 10:42:13,300 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-26 10:42:13,300 INFO L309 CfgBuilder]: Removed 9 assume(true) statements. [2023-11-26 10:42:13,301 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 10:42:13 BoogieIcfgContainer [2023-11-26 10:42:13,301 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-26 10:42:13,303 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-26 10:42:13,303 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-26 10:42:13,306 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-26 10:42:13,307 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.11 10:42:02" (1/3) ... [2023-11-26 10:42:13,307 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2651744 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 10:42:13, skipping insertion in model container [2023-11-26 10:42:13,308 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:42:05" (2/3) ... [2023-11-26 10:42:13,308 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2651744 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 10:42:13, skipping insertion in model container [2023-11-26 10:42:13,308 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 10:42:13" (3/3) ... [2023-11-26 10:42:13,310 INFO L112 eAbstractionObserver]: Analyzing ICFG whoami-incomplete-2.i [2023-11-26 10:42:13,329 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-26 10:42:13,330 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 147 error locations. [2023-11-26 10:42:13,398 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-26 10:42:13,405 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;@4ba9b2da, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-26 10:42:13,405 INFO L358 AbstractCegarLoop]: Starting to check reachability of 147 error locations. [2023-11-26 10:42:13,415 INFO L276 IsEmpty]: Start isEmpty. Operand has 317 states, 157 states have (on average 2.1974522292993632) internal successors, (345), 304 states have internal predecessors, (345), 9 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2023-11-26 10:42:13,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2023-11-26 10:42:13,432 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 10:42:13,433 INFO L195 NwaCegarLoop]: trace histogram [1, 1] [2023-11-26 10:42:13,433 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 144 more)] === [2023-11-26 10:42:13,440 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:42:13,440 INFO L85 PathProgramCache]: Analyzing trace with hash 20871, now seen corresponding path program 1 times [2023-11-26 10:42:13,460 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-26 10:42:13,465 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1102168631] [2023-11-26 10:42:13,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:42:13,467 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 10:42:13,467 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1b3f1ff-3b50-492c-9aec-eeafafafee49/bin/uautomizer-verify-VRDe98Ueme/mathsat [2023-11-26 10:42:13,473 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1b3f1ff-3b50-492c-9aec-eeafafafee49/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 10:42:13,496 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1b3f1ff-3b50-492c-9aec-eeafafafee49/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 10:42:13,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:42:13,736 INFO L262 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-26 10:42:13,741 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 10:42:13,808 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 10:42:13,834 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 10:42:13,834 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 10:42:13,835 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-26 10:42:13,835 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1102168631] [2023-11-26 10:42:13,836 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1102168631] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:42:13,836 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 10:42:13,836 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-26 10:42:13,838 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1249977049] [2023-11-26 10:42:13,839 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:42:13,843 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 10:42:13,843 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-26 10:42:13,874 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 10:42:13,876 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 10:42:13,882 INFO L87 Difference]: Start difference. First operand has 317 states, 157 states have (on average 2.1974522292993632) internal successors, (345), 304 states have internal predecessors, (345), 9 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) 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 10:42:15,642 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 10:42:15,643 INFO L93 Difference]: Finished difference Result 435 states and 488 transitions. [2023-11-26 10:42:15,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 10:42:15,654 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 10:42:15,654 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 10:42:15,668 INFO L225 Difference]: With dead ends: 435 [2023-11-26 10:42:15,668 INFO L226 Difference]: Without dead ends: 434 [2023-11-26 10:42:15,669 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 10:42:15,673 INFO L413 NwaCegarLoop]: 233 mSDtfsCounter, 279 mSDsluCounter, 99 mSDsCounter, 0 mSdLazyCounter, 244 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 288 SdHoareTripleChecker+Valid, 332 SdHoareTripleChecker+Invalid, 252 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 244 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2023-11-26 10:42:15,674 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [288 Valid, 332 Invalid, 252 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 244 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2023-11-26 10:42:15,691 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 434 states. [2023-11-26 10:42:15,728 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 434 to 313. [2023-11-26 10:42:15,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 313 states, 157 states have (on average 2.1019108280254777) internal successors, (330), 300 states have internal predecessors, (330), 9 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2023-11-26 10:42:15,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 313 states to 313 states and 348 transitions. [2023-11-26 10:42:15,736 INFO L78 Accepts]: Start accepts. Automaton has 313 states and 348 transitions. Word has length 2 [2023-11-26 10:42:15,736 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 10:42:15,736 INFO L495 AbstractCegarLoop]: Abstraction has 313 states and 348 transitions. [2023-11-26 10:42:15,737 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 10:42:15,737 INFO L276 IsEmpty]: Start isEmpty. Operand 313 states and 348 transitions. [2023-11-26 10:42:15,737 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2023-11-26 10:42:15,737 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 10:42:15,738 INFO L195 NwaCegarLoop]: trace histogram [1, 1] [2023-11-26 10:42:15,745 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1b3f1ff-3b50-492c-9aec-eeafafafee49/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 10:42:15,939 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1b3f1ff-3b50-492c-9aec-eeafafafee49/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 10:42:15,940 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 144 more)] === [2023-11-26 10:42:15,940 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:42:15,941 INFO L85 PathProgramCache]: Analyzing trace with hash 20872, now seen corresponding path program 1 times [2023-11-26 10:42:15,941 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-26 10:42:15,941 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [223061814] [2023-11-26 10:42:15,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:42:15,942 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 10:42:15,942 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1b3f1ff-3b50-492c-9aec-eeafafafee49/bin/uautomizer-verify-VRDe98Ueme/mathsat [2023-11-26 10:42:15,943 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1b3f1ff-3b50-492c-9aec-eeafafafee49/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 10:42:15,952 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1b3f1ff-3b50-492c-9aec-eeafafafee49/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 10:42:16,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:42:16,157 INFO L262 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-26 10:42:16,159 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 10:42:16,172 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 10:42:16,199 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 10:42:16,200 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 10:42:16,200 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-26 10:42:16,200 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [223061814] [2023-11-26 10:42:16,200 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [223061814] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:42:16,201 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 10:42:16,201 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-26 10:42:16,201 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1323170948] [2023-11-26 10:42:16,201 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:42:16,202 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 10:42:16,203 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-26 10:42:16,203 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 10:42:16,203 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 10:42:16,204 INFO L87 Difference]: Start difference. First operand 313 states and 348 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 10:42:18,279 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 10:42:18,279 INFO L93 Difference]: Finished difference Result 312 states and 347 transitions. [2023-11-26 10:42:18,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 10:42:18,282 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 10:42:18,282 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 10:42:18,284 INFO L225 Difference]: With dead ends: 312 [2023-11-26 10:42:18,284 INFO L226 Difference]: Without dead ends: 312 [2023-11-26 10:42:18,285 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 10:42:18,286 INFO L413 NwaCegarLoop]: 299 mSDtfsCounter, 9 mSDsluCounter, 189 mSDsCounter, 0 mSdLazyCounter, 195 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 488 SdHoareTripleChecker+Invalid, 195 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 195 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2023-11-26 10:42:18,286 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 488 Invalid, 195 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 195 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2023-11-26 10:42:18,288 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 312 states. [2023-11-26 10:42:18,302 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 312 to 312. [2023-11-26 10:42:18,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 312 states, 157 states have (on average 2.0955414012738856) internal successors, (329), 299 states have internal predecessors, (329), 9 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2023-11-26 10:42:18,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 312 states to 312 states and 347 transitions. [2023-11-26 10:42:18,306 INFO L78 Accepts]: Start accepts. Automaton has 312 states and 347 transitions. Word has length 2 [2023-11-26 10:42:18,306 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 10:42:18,306 INFO L495 AbstractCegarLoop]: Abstraction has 312 states and 347 transitions. [2023-11-26 10:42:18,306 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 10:42:18,306 INFO L276 IsEmpty]: Start isEmpty. Operand 312 states and 347 transitions. [2023-11-26 10:42:18,307 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2023-11-26 10:42:18,307 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 10:42:18,307 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2023-11-26 10:42:18,320 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1b3f1ff-3b50-492c-9aec-eeafafafee49/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)] Forceful destruction successful, exit code 0 [2023-11-26 10:42:18,517 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1b3f1ff-3b50-492c-9aec-eeafafafee49/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 10:42:18,517 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 144 more)] === [2023-11-26 10:42:18,518 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:42:18,518 INFO L85 PathProgramCache]: Analyzing trace with hash 20609255, now seen corresponding path program 1 times [2023-11-26 10:42:18,519 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-26 10:42:18,519 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1734970091] [2023-11-26 10:42:18,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:42:18,519 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 10:42:18,519 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1b3f1ff-3b50-492c-9aec-eeafafafee49/bin/uautomizer-verify-VRDe98Ueme/mathsat [2023-11-26 10:42:18,520 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1b3f1ff-3b50-492c-9aec-eeafafafee49/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 10:42:18,522 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1b3f1ff-3b50-492c-9aec-eeafafafee49/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 10:42:18,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:42:18,784 INFO L262 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-26 10:42:18,786 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 10:42:18,803 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 10:42:18,903 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 10:42:18,903 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 10:42:18,904 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-26 10:42:18,904 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1734970091] [2023-11-26 10:42:18,904 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1734970091] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:42:18,904 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 10:42:18,904 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-26 10:42:18,905 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [56766182] [2023-11-26 10:42:18,905 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:42:18,905 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-26 10:42:18,905 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-26 10:42:18,906 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-26 10:42:18,906 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-26 10:42:18,906 INFO L87 Difference]: Start difference. First operand 312 states and 347 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 10:42:21,353 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 10:42:21,353 INFO L93 Difference]: Finished difference Result 314 states and 349 transitions. [2023-11-26 10:42:21,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-26 10:42:21,356 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 10:42:21,356 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 10:42:21,358 INFO L225 Difference]: With dead ends: 314 [2023-11-26 10:42:21,358 INFO L226 Difference]: Without dead ends: 314 [2023-11-26 10:42:21,358 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 10:42:21,360 INFO L413 NwaCegarLoop]: 298 mSDtfsCounter, 9 mSDsluCounter, 190 mSDsCounter, 0 mSdLazyCounter, 205 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 488 SdHoareTripleChecker+Invalid, 206 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 205 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2023-11-26 10:42:21,360 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 488 Invalid, 206 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 205 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2023-11-26 10:42:21,362 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 314 states. [2023-11-26 10:42:21,375 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 314 to 314. [2023-11-26 10:42:21,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 314 states, 159 states have (on average 2.0817610062893084) internal successors, (331), 301 states have internal predecessors, (331), 9 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2023-11-26 10:42:21,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 314 states to 314 states and 349 transitions. [2023-11-26 10:42:21,379 INFO L78 Accepts]: Start accepts. Automaton has 314 states and 349 transitions. Word has length 4 [2023-11-26 10:42:21,379 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 10:42:21,379 INFO L495 AbstractCegarLoop]: Abstraction has 314 states and 349 transitions. [2023-11-26 10:42:21,379 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 10:42:21,380 INFO L276 IsEmpty]: Start isEmpty. Operand 314 states and 349 transitions. [2023-11-26 10:42:21,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2023-11-26 10:42:21,380 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 10:42:21,380 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1] [2023-11-26 10:42:21,390 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1b3f1ff-3b50-492c-9aec-eeafafafee49/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 10:42:21,585 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1b3f1ff-3b50-492c-9aec-eeafafafee49/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 10:42:21,586 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 144 more)] === [2023-11-26 10:42:21,586 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:42:21,586 INFO L85 PathProgramCache]: Analyzing trace with hash -1668800772, now seen corresponding path program 1 times [2023-11-26 10:42:21,587 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-26 10:42:21,588 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [245508526] [2023-11-26 10:42:21,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:42:21,588 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 10:42:21,588 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1b3f1ff-3b50-492c-9aec-eeafafafee49/bin/uautomizer-verify-VRDe98Ueme/mathsat [2023-11-26 10:42:21,589 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1b3f1ff-3b50-492c-9aec-eeafafafee49/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 10:42:21,601 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1b3f1ff-3b50-492c-9aec-eeafafafee49/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 10:42:21,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:42:21,820 INFO L262 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-26 10:42:21,822 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 10:42:21,838 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 10:42:22,009 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 10:42:22,009 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 10:42:22,851 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 10:42:22,852 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-26 10:42:22,852 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [245508526] [2023-11-26 10:42:22,852 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [245508526] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-26 10:42:22,852 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-26 10:42:22,853 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 6 [2023-11-26 10:42:22,853 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1456504940] [2023-11-26 10:42:22,853 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-26 10:42:22,853 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-26 10:42:22,854 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-26 10:42:22,854 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-26 10:42:22,855 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-11-26 10:42:22,855 INFO L87 Difference]: Start difference. First operand 314 states and 349 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 10:42:35,568 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 10:42:35,568 INFO L93 Difference]: Finished difference Result 316 states and 351 transitions. [2023-11-26 10:42:35,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-26 10:42:35,571 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 10:42:35,572 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 10:42:35,574 INFO L225 Difference]: With dead ends: 316 [2023-11-26 10:42:35,574 INFO L226 Difference]: Without dead ends: 316 [2023-11-26 10:42:35,575 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 10:42:35,576 INFO L413 NwaCegarLoop]: 297 mSDtfsCounter, 10 mSDsluCounter, 758 mSDsCounter, 0 mSdLazyCounter, 657 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 1055 SdHoareTripleChecker+Invalid, 661 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 657 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.5s IncrementalHoareTripleChecker+Time [2023-11-26 10:42:35,577 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 1055 Invalid, 661 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 657 Invalid, 0 Unknown, 0 Unchecked, 12.5s Time] [2023-11-26 10:42:35,583 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 316 states. [2023-11-26 10:42:35,594 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 316 to 316. [2023-11-26 10:42:35,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 316 states, 162 states have (on average 2.0555555555555554) internal successors, (333), 303 states have internal predecessors, (333), 9 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2023-11-26 10:42:35,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 316 states to 316 states and 351 transitions. [2023-11-26 10:42:35,598 INFO L78 Accepts]: Start accepts. Automaton has 316 states and 351 transitions. Word has length 6 [2023-11-26 10:42:35,599 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 10:42:35,599 INFO L495 AbstractCegarLoop]: Abstraction has 316 states and 351 transitions. [2023-11-26 10:42:35,599 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 10:42:35,600 INFO L276 IsEmpty]: Start isEmpty. Operand 316 states and 351 transitions. [2023-11-26 10:42:35,600 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2023-11-26 10:42:35,600 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 10:42:35,601 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1] [2023-11-26 10:42:35,614 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1b3f1ff-3b50-492c-9aec-eeafafafee49/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 10:42:35,808 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1b3f1ff-3b50-492c-9aec-eeafafafee49/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 10:42:35,808 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 144 more)] === [2023-11-26 10:42:35,809 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:42:35,809 INFO L85 PathProgramCache]: Analyzing trace with hash -1699889426, now seen corresponding path program 1 times [2023-11-26 10:42:35,810 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-26 10:42:35,810 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1480006054] [2023-11-26 10:42:35,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:42:35,811 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 10:42:35,811 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1b3f1ff-3b50-492c-9aec-eeafafafee49/bin/uautomizer-verify-VRDe98Ueme/mathsat [2023-11-26 10:42:35,812 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1b3f1ff-3b50-492c-9aec-eeafafafee49/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 10:42:35,817 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1b3f1ff-3b50-492c-9aec-eeafafafee49/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 10:42:36,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:42:36,092 INFO L262 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-26 10:42:36,094 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 10:42:36,203 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 10:42:36,203 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 10:42:36,387 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 10:42:36,388 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-26 10:42:36,388 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1480006054] [2023-11-26 10:42:36,388 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1480006054] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-26 10:42:36,388 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-26 10:42:36,388 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2023-11-26 10:42:36,389 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1905774052] [2023-11-26 10:42:36,389 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-26 10:42:36,389 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-26 10:42:36,389 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-26 10:42:36,390 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-26 10:42:36,390 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2023-11-26 10:42:36,390 INFO L87 Difference]: Start difference. First operand 316 states and 351 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 10:42:38,782 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 10:42:38,782 INFO L93 Difference]: Finished difference Result 326 states and 361 transitions. [2023-11-26 10:42:38,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-26 10:42:38,785 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 10:42:38,785 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 10:42:38,788 INFO L225 Difference]: With dead ends: 326 [2023-11-26 10:42:38,788 INFO L226 Difference]: Without dead ends: 326 [2023-11-26 10:42:38,789 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 10:42:38,790 INFO L413 NwaCegarLoop]: 301 mSDtfsCounter, 6 mSDsluCounter, 1196 mSDsCounter, 0 mSdLazyCounter, 262 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 1497 SdHoareTripleChecker+Invalid, 264 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 262 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2023-11-26 10:42:38,790 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 1497 Invalid, 264 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 262 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2023-11-26 10:42:38,792 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 326 states. [2023-11-26 10:42:38,800 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 326 to 326. [2023-11-26 10:42:38,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 326 states, 172 states have (on average 1.994186046511628) internal successors, (343), 313 states have internal predecessors, (343), 9 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2023-11-26 10:42:38,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 326 states to 326 states and 361 transitions. [2023-11-26 10:42:38,805 INFO L78 Accepts]: Start accepts. Automaton has 326 states and 361 transitions. Word has length 11 [2023-11-26 10:42:38,805 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 10:42:38,805 INFO L495 AbstractCegarLoop]: Abstraction has 326 states and 361 transitions. [2023-11-26 10:42:38,806 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 10:42:38,806 INFO L276 IsEmpty]: Start isEmpty. Operand 326 states and 361 transitions. [2023-11-26 10:42:38,807 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2023-11-26 10:42:38,807 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 10:42:38,807 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 1, 1, 1, 1, 1] [2023-11-26 10:42:38,821 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1b3f1ff-3b50-492c-9aec-eeafafafee49/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 10:42:39,014 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1b3f1ff-3b50-492c-9aec-eeafafafee49/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 10:42:39,015 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 144 more)] === [2023-11-26 10:42:39,015 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:42:39,015 INFO L85 PathProgramCache]: Analyzing trace with hash 1259406565, now seen corresponding path program 2 times [2023-11-26 10:42:39,016 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-26 10:42:39,016 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1711298549] [2023-11-26 10:42:39,016 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-26 10:42:39,017 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 10:42:39,017 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1b3f1ff-3b50-492c-9aec-eeafafafee49/bin/uautomizer-verify-VRDe98Ueme/mathsat [2023-11-26 10:42:39,019 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1b3f1ff-3b50-492c-9aec-eeafafafee49/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 10:42:39,056 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1b3f1ff-3b50-492c-9aec-eeafafafee49/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 10:42:39,287 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-26 10:42:39,288 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-26 10:42:39,292 INFO L262 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-26 10:42:39,294 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 10:42:39,342 INFO L349 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2023-11-26 10:42:39,343 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 10:42:39,844 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 10:42:39,844 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 10:42:39,845 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-26 10:42:39,845 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1711298549] [2023-11-26 10:42:39,845 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1711298549] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:42:39,845 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 10:42:39,845 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-26 10:42:39,845 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1545837424] [2023-11-26 10:42:39,845 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:42:39,846 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 10:42:39,846 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-26 10:42:39,846 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 10:42:39,847 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 10:42:39,847 INFO L87 Difference]: Start difference. First operand 326 states and 361 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 10:42:42,918 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 10:42:42,918 INFO L93 Difference]: Finished difference Result 467 states and 518 transitions. [2023-11-26 10:42:42,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 10:42:42,921 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 10:42:42,921 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 10:42:42,924 INFO L225 Difference]: With dead ends: 467 [2023-11-26 10:42:42,925 INFO L226 Difference]: Without dead ends: 467 [2023-11-26 10:42:42,925 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 10:42:42,926 INFO L413 NwaCegarLoop]: 252 mSDtfsCounter, 308 mSDsluCounter, 104 mSDsCounter, 0 mSdLazyCounter, 238 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 308 SdHoareTripleChecker+Valid, 356 SdHoareTripleChecker+Invalid, 245 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 238 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2023-11-26 10:42:42,926 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [308 Valid, 356 Invalid, 245 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 238 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2023-11-26 10:42:42,928 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 467 states. [2023-11-26 10:42:42,940 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 467 to 386. [2023-11-26 10:42:42,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 386 states, 225 states have (on average 2.017777777777778) internal successors, (454), 365 states have internal predecessors, (454), 14 states have call successors, (14), 6 states have call predecessors, (14), 6 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2023-11-26 10:42:42,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 386 states to 386 states and 482 transitions. [2023-11-26 10:42:42,947 INFO L78 Accepts]: Start accepts. Automaton has 386 states and 482 transitions. Word has length 21 [2023-11-26 10:42:42,948 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 10:42:42,948 INFO L495 AbstractCegarLoop]: Abstraction has 386 states and 482 transitions. [2023-11-26 10:42:42,948 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 10:42:42,949 INFO L276 IsEmpty]: Start isEmpty. Operand 386 states and 482 transitions. [2023-11-26 10:42:42,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2023-11-26 10:42:42,949 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 10:42:42,950 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 1, 1, 1, 1, 1] [2023-11-26 10:42:42,962 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1b3f1ff-3b50-492c-9aec-eeafafafee49/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)] Forceful destruction successful, exit code 0 [2023-11-26 10:42:43,156 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1b3f1ff-3b50-492c-9aec-eeafafafee49/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 10:42:43,156 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 144 more)] === [2023-11-26 10:42:43,157 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:42:43,157 INFO L85 PathProgramCache]: Analyzing trace with hash 1259406566, now seen corresponding path program 1 times [2023-11-26 10:42:43,158 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-26 10:42:43,158 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [490649847] [2023-11-26 10:42:43,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:42:43,158 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 10:42:43,158 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1b3f1ff-3b50-492c-9aec-eeafafafee49/bin/uautomizer-verify-VRDe98Ueme/mathsat [2023-11-26 10:42:43,160 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1b3f1ff-3b50-492c-9aec-eeafafafee49/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 10:42:43,196 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1b3f1ff-3b50-492c-9aec-eeafafafee49/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 10:42:43,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:42:43,539 INFO L262 TraceCheckSpWp]: Trace formula consists of 237 conjuncts, 10 conjunts are in the unsatisfiable core [2023-11-26 10:42:43,542 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 10:42:43,854 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 10:42:43,854 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 10:42:44,455 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 10:42:44,456 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-26 10:42:44,456 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [490649847] [2023-11-26 10:42:44,456 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [490649847] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-26 10:42:44,456 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-26 10:42:44,456 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 20 [2023-11-26 10:42:44,456 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1122537021] [2023-11-26 10:42:44,456 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-26 10:42:44,457 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-11-26 10:42:44,457 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-26 10:42:44,457 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-11-26 10:42:44,458 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=290, Unknown=0, NotChecked=0, Total=380 [2023-11-26 10:42:44,458 INFO L87 Difference]: Start difference. First operand 386 states and 482 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)