./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/ldv-memsafety/memleaks_test13.i --full-output --architecture 32bit -------------------------------------------------------------------------------- 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_ed35a62b-1f6a-4515-80c2-77e5756653fd/bin/uautomizer-verify-NlZe1sFDwI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed35a62b-1f6a-4515-80c2-77e5756653fd/bin/uautomizer-verify-NlZe1sFDwI/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed35a62b-1f6a-4515-80c2-77e5756653fd/bin/uautomizer-verify-NlZe1sFDwI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed35a62b-1f6a-4515-80c2-77e5756653fd/bin/uautomizer-verify-NlZe1sFDwI/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/ldv-memsafety/memleaks_test13.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed35a62b-1f6a-4515-80c2-77e5756653fd/bin/uautomizer-verify-NlZe1sFDwI/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed35a62b-1f6a-4515-80c2-77e5756653fd/bin/uautomizer-verify-NlZe1sFDwI --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash e403b28035008257649d82a96310933a0e656461d578ec0892b41718c92e86af --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-24 21:59:06,830 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-24 21:59:06,952 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed35a62b-1f6a-4515-80c2-77e5756653fd/bin/uautomizer-verify-NlZe1sFDwI/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2023-11-24 21:59:06,957 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-24 21:59:06,958 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-24 21:59:06,981 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-24 21:59:06,982 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-24 21:59:06,983 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-24 21:59:06,984 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-24 21:59:06,984 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-24 21:59:06,985 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-24 21:59:06,986 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-24 21:59:06,986 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-24 21:59:06,987 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-24 21:59:06,988 INFO L153 SettingsManager]: * Use SBE=true [2023-11-24 21:59:06,988 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-24 21:59:06,989 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-24 21:59:06,989 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-24 21:59:06,990 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-24 21:59:06,990 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-24 21:59:06,991 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-24 21:59:06,992 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-24 21:59:06,992 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-24 21:59:06,993 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-24 21:59:06,993 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-24 21:59:06,993 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-24 21:59:06,994 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-24 21:59:06,994 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-24 21:59:06,995 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-24 21:59:06,995 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-24 21:59:06,996 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-24 21:59:06,996 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-24 21:59:06,996 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-24 21:59:06,997 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-24 21:59:06,997 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-24 21:59:06,997 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-24 21:59:06,998 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-24 21:59:06,998 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-24 21:59:06,998 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-24 21:59:06,998 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-24 21:59:06,999 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-24 21:59:06,999 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_ed35a62b-1f6a-4515-80c2-77e5756653fd/bin/uautomizer-verify-NlZe1sFDwI/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed35a62b-1f6a-4515-80c2-77e5756653fd/bin/uautomizer-verify-NlZe1sFDwI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e403b28035008257649d82a96310933a0e656461d578ec0892b41718c92e86af [2023-11-24 21:59:07,324 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-24 21:59:07,359 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-24 21:59:07,361 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-24 21:59:07,363 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-24 21:59:07,363 INFO L274 PluginConnector]: CDTParser initialized [2023-11-24 21:59:07,365 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed35a62b-1f6a-4515-80c2-77e5756653fd/bin/uautomizer-verify-NlZe1sFDwI/../../sv-benchmarks/c/ldv-memsafety/memleaks_test13.i [2023-11-24 21:59:10,614 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-24 21:59:10,946 INFO L384 CDTParser]: Found 1 translation units. [2023-11-24 21:59:10,947 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed35a62b-1f6a-4515-80c2-77e5756653fd/sv-benchmarks/c/ldv-memsafety/memleaks_test13.i [2023-11-24 21:59:10,971 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed35a62b-1f6a-4515-80c2-77e5756653fd/bin/uautomizer-verify-NlZe1sFDwI/data/155e84d86/633887200389489698f9b68ef77fe382/FLAG04932452c [2023-11-24 21:59:10,985 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed35a62b-1f6a-4515-80c2-77e5756653fd/bin/uautomizer-verify-NlZe1sFDwI/data/155e84d86/633887200389489698f9b68ef77fe382 [2023-11-24 21:59:10,988 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-24 21:59:10,990 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-24 21:59:10,991 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-24 21:59:10,992 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-24 21:59:11,000 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-24 21:59:11,003 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 09:59:10" (1/1) ... [2023-11-24 21:59:11,005 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@602f2b90 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:59:11, skipping insertion in model container [2023-11-24 21:59:11,005 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 09:59:10" (1/1) ... [2023-11-24 21:59:11,081 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-24 21:59:11,671 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-24 21:59:11,703 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) [2023-11-24 21:59:11,704 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@299a5320 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:59:11, skipping insertion in model container [2023-11-24 21:59:11,704 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-24 21:59:11,705 INFO L186 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2023-11-24 21:59:11,707 INFO L158 Benchmark]: Toolchain (without parser) took 716.10ms. Allocated memory is still 142.6MB. Free memory was 102.0MB in the beginning and 87.8MB in the end (delta: 14.2MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2023-11-24 21:59:11,708 INFO L158 Benchmark]: CDTParser took 0.32ms. Allocated memory is still 142.6MB. Free memory was 112.0MB in the beginning and 111.9MB in the end (delta: 142.7kB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-24 21:59:11,709 INFO L158 Benchmark]: CACSL2BoogieTranslator took 713.24ms. Allocated memory is still 142.6MB. Free memory was 102.0MB in the beginning and 87.8MB in the end (delta: 14.2MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2023-11-24 21:59:11,712 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.32ms. Allocated memory is still 142.6MB. Free memory was 112.0MB in the beginning and 111.9MB in the end (delta: 142.7kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 713.24ms. Allocated memory is still 142.6MB. Free memory was 102.0MB in the beginning and 87.8MB in the end (delta: 14.2MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 576]: 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_ed35a62b-1f6a-4515-80c2-77e5756653fd/bin/uautomizer-verify-NlZe1sFDwI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed35a62b-1f6a-4515-80c2-77e5756653fd/bin/uautomizer-verify-NlZe1sFDwI/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed35a62b-1f6a-4515-80c2-77e5756653fd/bin/uautomizer-verify-NlZe1sFDwI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed35a62b-1f6a-4515-80c2-77e5756653fd/bin/uautomizer-verify-NlZe1sFDwI/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/ldv-memsafety/memleaks_test13.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed35a62b-1f6a-4515-80c2-77e5756653fd/bin/uautomizer-verify-NlZe1sFDwI/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed35a62b-1f6a-4515-80c2-77e5756653fd/bin/uautomizer-verify-NlZe1sFDwI --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash e403b28035008257649d82a96310933a0e656461d578ec0892b41718c92e86af --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-24 21:59:14,470 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-24 21:59:14,626 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed35a62b-1f6a-4515-80c2-77e5756653fd/bin/uautomizer-verify-NlZe1sFDwI/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2023-11-24 21:59:14,635 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-24 21:59:14,638 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-24 21:59:14,687 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-24 21:59:14,688 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-24 21:59:14,689 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-24 21:59:14,690 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-24 21:59:14,695 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-24 21:59:14,695 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-24 21:59:14,696 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-24 21:59:14,697 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-24 21:59:14,699 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-24 21:59:14,699 INFO L153 SettingsManager]: * Use SBE=true [2023-11-24 21:59:14,700 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-24 21:59:14,700 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-24 21:59:14,700 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-24 21:59:14,701 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-24 21:59:14,701 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-24 21:59:14,702 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-24 21:59:14,702 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-24 21:59:14,703 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-24 21:59:14,703 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-24 21:59:14,704 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-24 21:59:14,704 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-11-24 21:59:14,704 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-11-24 21:59:14,705 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-24 21:59:14,705 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-24 21:59:14,706 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-24 21:59:14,708 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-24 21:59:14,708 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-24 21:59:14,708 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-24 21:59:14,709 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-24 21:59:14,709 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-24 21:59:14,709 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-24 21:59:14,710 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-24 21:59:14,711 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-11-24 21:59:14,711 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-11-24 21:59:14,711 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-24 21:59:14,711 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-24 21:59:14,712 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-24 21:59:14,712 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-24 21:59:14,712 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-11-24 21:59:14,713 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_ed35a62b-1f6a-4515-80c2-77e5756653fd/bin/uautomizer-verify-NlZe1sFDwI/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed35a62b-1f6a-4515-80c2-77e5756653fd/bin/uautomizer-verify-NlZe1sFDwI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e403b28035008257649d82a96310933a0e656461d578ec0892b41718c92e86af [2023-11-24 21:59:15,137 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-24 21:59:15,159 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-24 21:59:15,161 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-24 21:59:15,163 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-24 21:59:15,164 INFO L274 PluginConnector]: CDTParser initialized [2023-11-24 21:59:15,165 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed35a62b-1f6a-4515-80c2-77e5756653fd/bin/uautomizer-verify-NlZe1sFDwI/../../sv-benchmarks/c/ldv-memsafety/memleaks_test13.i [2023-11-24 21:59:18,320 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-24 21:59:18,716 INFO L384 CDTParser]: Found 1 translation units. [2023-11-24 21:59:18,728 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed35a62b-1f6a-4515-80c2-77e5756653fd/sv-benchmarks/c/ldv-memsafety/memleaks_test13.i [2023-11-24 21:59:18,761 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed35a62b-1f6a-4515-80c2-77e5756653fd/bin/uautomizer-verify-NlZe1sFDwI/data/37c51dc6f/92365e3290304e8eb08dcf152401e823/FLAGe2241b6ff [2023-11-24 21:59:18,782 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed35a62b-1f6a-4515-80c2-77e5756653fd/bin/uautomizer-verify-NlZe1sFDwI/data/37c51dc6f/92365e3290304e8eb08dcf152401e823 [2023-11-24 21:59:18,789 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-24 21:59:18,791 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-24 21:59:18,796 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-24 21:59:18,796 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-24 21:59:18,803 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-24 21:59:18,804 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 09:59:18" (1/1) ... [2023-11-24 21:59:18,805 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@55200a34 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:59:18, skipping insertion in model container [2023-11-24 21:59:18,810 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 09:59:18" (1/1) ... [2023-11-24 21:59:18,897 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-24 21:59:19,481 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-24 21:59:19,521 INFO L199 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2023-11-24 21:59:19,531 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-24 21:59:19,622 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-24 21:59:19,647 INFO L202 MainTranslator]: Completed pre-run [2023-11-24 21:59:19,740 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-24 21:59:19,788 WARN L675 CHandler]: The function release is called, but not defined or handled by StandardFunctionHandler. [2023-11-24 21:59:19,798 INFO L206 MainTranslator]: Completed translation [2023-11-24 21:59:19,798 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:59:19 WrapperNode [2023-11-24 21:59:19,798 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-24 21:59:19,800 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-24 21:59:19,800 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-24 21:59:19,800 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-24 21:59:19,809 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:59:19" (1/1) ... [2023-11-24 21:59:19,835 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:59:19" (1/1) ... [2023-11-24 21:59:19,860 INFO L138 Inliner]: procedures = 167, calls = 80, calls flagged for inlining = 21, calls inlined = 6, statements flattened = 65 [2023-11-24 21:59:19,861 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-24 21:59:19,862 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-24 21:59:19,862 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-24 21:59:19,862 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-24 21:59:19,875 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:59:19" (1/1) ... [2023-11-24 21:59:19,875 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:59:19" (1/1) ... [2023-11-24 21:59:19,880 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:59:19" (1/1) ... [2023-11-24 21:59:19,907 INFO L175 MemorySlicer]: Split 18 memory accesses to 2 slices as follows [2, 16]. 89 percent of accesses are in the largest equivalence class. The 4 initializations are split as follows [2, 2]. The 8 writes are split as follows [0, 8]. [2023-11-24 21:59:19,908 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:59:19" (1/1) ... [2023-11-24 21:59:19,908 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:59:19" (1/1) ... [2023-11-24 21:59:19,921 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:59:19" (1/1) ... [2023-11-24 21:59:19,924 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:59:19" (1/1) ... [2023-11-24 21:59:19,927 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:59:19" (1/1) ... [2023-11-24 21:59:19,929 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:59:19" (1/1) ... [2023-11-24 21:59:19,943 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-24 21:59:19,944 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-24 21:59:19,945 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-24 21:59:19,945 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-24 21:59:19,946 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:59:19" (1/1) ... [2023-11-24 21:59:19,963 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-24 21:59:19,978 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed35a62b-1f6a-4515-80c2-77e5756653fd/bin/uautomizer-verify-NlZe1sFDwI/z3 [2023-11-24 21:59:19,999 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed35a62b-1f6a-4515-80c2-77e5756653fd/bin/uautomizer-verify-NlZe1sFDwI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-24 21:59:20,040 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed35a62b-1f6a-4515-80c2-77e5756653fd/bin/uautomizer-verify-NlZe1sFDwI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-24 21:59:20,054 INFO L130 BoogieDeclarations]: Found specification of procedure LDV_INIT_LIST_HEAD [2023-11-24 21:59:20,054 INFO L138 BoogieDeclarations]: Found implementation of procedure LDV_INIT_LIST_HEAD [2023-11-24 21:59:20,054 INFO L130 BoogieDeclarations]: Found specification of procedure __ldv_list_add [2023-11-24 21:59:20,055 INFO L138 BoogieDeclarations]: Found implementation of procedure __ldv_list_add [2023-11-24 21:59:20,055 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2023-11-24 21:59:20,056 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2023-11-24 21:59:20,057 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_list_add [2023-11-24 21:59:20,057 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_list_add [2023-11-24 21:59:20,058 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-24 21:59:20,058 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-24 21:59:20,058 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2023-11-24 21:59:20,058 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2023-11-24 21:59:20,058 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2023-11-24 21:59:20,058 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2023-11-24 21:59:20,059 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-24 21:59:20,060 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#0 [2023-11-24 21:59:20,060 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#1 [2023-11-24 21:59:20,060 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_list_del [2023-11-24 21:59:20,060 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_list_del [2023-11-24 21:59:20,060 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-24 21:59:20,061 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-24 21:59:20,231 INFO L241 CfgBuilder]: Building ICFG [2023-11-24 21:59:20,234 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-24 21:59:20,761 INFO L282 CfgBuilder]: Performing block encoding [2023-11-24 21:59:20,862 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-24 21:59:20,863 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-24 21:59:20,863 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 09:59:20 BoogieIcfgContainer [2023-11-24 21:59:20,864 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-24 21:59:20,866 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-24 21:59:20,866 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-24 21:59:20,870 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-24 21:59:20,870 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.11 09:59:18" (1/3) ... [2023-11-24 21:59:20,871 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@359d143a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 09:59:20, skipping insertion in model container [2023-11-24 21:59:20,871 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:59:19" (2/3) ... [2023-11-24 21:59:20,873 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@359d143a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 09:59:20, skipping insertion in model container [2023-11-24 21:59:20,873 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 09:59:20" (3/3) ... [2023-11-24 21:59:20,874 INFO L112 eAbstractionObserver]: Analyzing ICFG memleaks_test13.i [2023-11-24 21:59:20,896 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-24 21:59:20,897 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 32 error locations. [2023-11-24 21:59:20,958 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-24 21:59:20,965 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;@54e58621, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-24 21:59:20,965 INFO L358 AbstractCegarLoop]: Starting to check reachability of 32 error locations. [2023-11-24 21:59:20,970 INFO L276 IsEmpty]: Start isEmpty. Operand has 76 states, 33 states have (on average 2.090909090909091) internal successors, (69), 66 states have internal predecessors, (69), 5 states have call successors, (5), 5 states have call predecessors, (5), 5 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2023-11-24 21:59:20,978 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2023-11-24 21:59:20,978 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 21:59:20,979 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 21:59:20,980 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_list_addErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ldv_list_addErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ldv_list_addErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, LDV_INIT_LIST_HEADErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 29 more)] === [2023-11-24 21:59:20,987 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:59:20,987 INFO L85 PathProgramCache]: Analyzing trace with hash 2013665599, now seen corresponding path program 1 times [2023-11-24 21:59:21,006 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-24 21:59:21,006 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1343879706] [2023-11-24 21:59:21,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:59:21,007 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 [2023-11-24 21:59:21,007 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed35a62b-1f6a-4515-80c2-77e5756653fd/bin/uautomizer-verify-NlZe1sFDwI/mathsat [2023-11-24 21:59:21,010 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed35a62b-1f6a-4515-80c2-77e5756653fd/bin/uautomizer-verify-NlZe1sFDwI/mathsat -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) [2023-11-24 21:59:21,055 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed35a62b-1f6a-4515-80c2-77e5756653fd/bin/uautomizer-verify-NlZe1sFDwI/mathsat -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 [2023-11-24 21:59:21,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:59:21,152 INFO L262 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-24 21:59:21,158 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 21:59:21,427 INFO L349 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2023-11-24 21:59:21,429 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 [2023-11-24 21:59:21,553 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:59:21,553 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 21:59:21,554 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-24 21:59:21,554 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1343879706] [2023-11-24 21:59:21,556 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1343879706] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:59:21,556 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:59:21,556 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-24 21:59:21,558 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1401968712] [2023-11-24 21:59:21,559 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:59:21,565 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-24 21:59:21,566 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-24 21:59:21,605 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-24 21:59:21,606 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=30, Unknown=1, NotChecked=0, Total=42 [2023-11-24 21:59:21,610 INFO L87 Difference]: Start difference. First operand has 76 states, 33 states have (on average 2.090909090909091) internal successors, (69), 66 states have internal predecessors, (69), 5 states have call successors, (5), 5 states have call predecessors, (5), 5 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) Second operand has 7 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 5 states have internal predecessors, (8), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-24 21:59:22,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 21:59:22,609 INFO L93 Difference]: Finished difference Result 112 states and 114 transitions. [2023-11-24 21:59:22,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-24 21:59:22,612 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 5 states have internal predecessors, (8), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 11 [2023-11-24 21:59:22,613 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 21:59:22,625 INFO L225 Difference]: With dead ends: 112 [2023-11-24 21:59:22,625 INFO L226 Difference]: Without dead ends: 110 [2023-11-24 21:59:22,627 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=39, Invalid=70, Unknown=1, NotChecked=0, Total=110 [2023-11-24 21:59:22,631 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 147 mSDsluCounter, 72 mSDsCounter, 0 mSdLazyCounter, 262 mSolverCounterSat, 17 mSolverCounterUnsat, 26 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 150 SdHoareTripleChecker+Valid, 93 SdHoareTripleChecker+Invalid, 305 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 262 IncrementalHoareTripleChecker+Invalid, 26 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-11-24 21:59:22,632 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [150 Valid, 93 Invalid, 305 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 262 Invalid, 26 Unknown, 0 Unchecked, 0.8s Time] [2023-11-24 21:59:22,654 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2023-11-24 21:59:22,679 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 73. [2023-11-24 21:59:22,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73 states, 33 states have (on average 1.9696969696969697) internal successors, (65), 63 states have internal predecessors, (65), 5 states have call successors, (5), 5 states have call predecessors, (5), 5 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2023-11-24 21:59:22,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 75 transitions. [2023-11-24 21:59:22,684 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 75 transitions. Word has length 11 [2023-11-24 21:59:22,685 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 21:59:22,685 INFO L495 AbstractCegarLoop]: Abstraction has 73 states and 75 transitions. [2023-11-24 21:59:22,685 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 5 states have internal predecessors, (8), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-24 21:59:22,685 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 75 transitions. [2023-11-24 21:59:22,686 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2023-11-24 21:59:22,686 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 21:59:22,686 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 21:59:22,699 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed35a62b-1f6a-4515-80c2-77e5756653fd/bin/uautomizer-verify-NlZe1sFDwI/mathsat -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 [2023-11-24 21:59:22,891 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed35a62b-1f6a-4515-80c2-77e5756653fd/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-24 21:59:22,892 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_list_addErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ldv_list_addErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ldv_list_addErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, LDV_INIT_LIST_HEADErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 29 more)] === [2023-11-24 21:59:22,892 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:59:22,892 INFO L85 PathProgramCache]: Analyzing trace with hash 2013665600, now seen corresponding path program 1 times [2023-11-24 21:59:22,893 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-24 21:59:22,894 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1398082060] [2023-11-24 21:59:22,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:59:22,894 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 [2023-11-24 21:59:22,894 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed35a62b-1f6a-4515-80c2-77e5756653fd/bin/uautomizer-verify-NlZe1sFDwI/mathsat [2023-11-24 21:59:22,896 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed35a62b-1f6a-4515-80c2-77e5756653fd/bin/uautomizer-verify-NlZe1sFDwI/mathsat -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) [2023-11-24 21:59:22,899 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed35a62b-1f6a-4515-80c2-77e5756653fd/bin/uautomizer-verify-NlZe1sFDwI/mathsat -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 [2023-11-24 21:59:22,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:59:22,994 INFO L262 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 15 conjunts are in the unsatisfiable core [2023-11-24 21:59:22,996 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 21:59:23,269 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:59:23,272 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 9 [2023-11-24 21:59:23,454 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:59:23,455 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 21:59:23,455 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-24 21:59:23,455 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1398082060] [2023-11-24 21:59:23,456 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1398082060] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:59:23,456 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:59:23,456 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-24 21:59:23,457 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [447512305] [2023-11-24 21:59:23,457 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:59:23,458 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-24 21:59:23,460 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-24 21:59:23,462 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-24 21:59:23,463 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-11-24 21:59:23,463 INFO L87 Difference]: Start difference. First operand 73 states and 75 transitions. Second operand has 8 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 6 states have internal predecessors, (8), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-24 21:59:24,763 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.16s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-24 21:59:25,974 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 21:59:25,975 INFO L93 Difference]: Finished difference Result 108 states and 110 transitions. [2023-11-24 21:59:25,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-24 21:59:25,976 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 6 states have internal predecessors, (8), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 11 [2023-11-24 21:59:25,977 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 21:59:25,979 INFO L225 Difference]: With dead ends: 108 [2023-11-24 21:59:25,979 INFO L226 Difference]: Without dead ends: 108 [2023-11-24 21:59:25,980 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=63, Invalid=147, Unknown=0, NotChecked=0, Total=210 [2023-11-24 21:59:25,982 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 162 mSDsluCounter, 61 mSDsCounter, 0 mSdLazyCounter, 267 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 167 SdHoareTripleChecker+Valid, 80 SdHoareTripleChecker+Invalid, 298 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 267 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2023-11-24 21:59:25,983 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [167 Valid, 80 Invalid, 298 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 267 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2023-11-24 21:59:25,984 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2023-11-24 21:59:25,996 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 71. [2023-11-24 21:59:25,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71 states, 33 states have (on average 1.9090909090909092) internal successors, (63), 61 states have internal predecessors, (63), 5 states have call successors, (5), 5 states have call predecessors, (5), 5 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2023-11-24 21:59:26,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 73 transitions. [2023-11-24 21:59:26,003 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 73 transitions. Word has length 11 [2023-11-24 21:59:26,005 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 21:59:26,006 INFO L495 AbstractCegarLoop]: Abstraction has 71 states and 73 transitions. [2023-11-24 21:59:26,007 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 6 states have internal predecessors, (8), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-24 21:59:26,007 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 73 transitions. [2023-11-24 21:59:26,009 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2023-11-24 21:59:26,009 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 21:59:26,011 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 21:59:26,019 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed35a62b-1f6a-4515-80c2-77e5756653fd/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Ended with exit code 0 [2023-11-24 21:59:26,213 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed35a62b-1f6a-4515-80c2-77e5756653fd/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-24 21:59:26,214 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ldv_list_addErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ldv_list_addErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, LDV_INIT_LIST_HEADErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 29 more)] === [2023-11-24 21:59:26,214 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:59:26,215 INFO L85 PathProgramCache]: Analyzing trace with hash 2013715546, now seen corresponding path program 1 times [2023-11-24 21:59:26,215 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-24 21:59:26,215 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [763379954] [2023-11-24 21:59:26,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:59:26,216 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 [2023-11-24 21:59:26,216 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed35a62b-1f6a-4515-80c2-77e5756653fd/bin/uautomizer-verify-NlZe1sFDwI/mathsat [2023-11-24 21:59:26,222 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed35a62b-1f6a-4515-80c2-77e5756653fd/bin/uautomizer-verify-NlZe1sFDwI/mathsat -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) [2023-11-24 21:59:26,252 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed35a62b-1f6a-4515-80c2-77e5756653fd/bin/uautomizer-verify-NlZe1sFDwI/mathsat -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 [2023-11-24 21:59:26,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:59:26,339 INFO L262 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-24 21:59:26,342 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 21:59:26,399 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:59:26,400 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 21:59:26,400 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-24 21:59:26,400 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [763379954] [2023-11-24 21:59:26,400 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [763379954] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:59:26,401 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:59:26,401 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-24 21:59:26,401 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [851111514] [2023-11-24 21:59:26,401 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:59:26,402 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-24 21:59:26,402 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-24 21:59:26,403 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-24 21:59:26,403 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-24 21:59:26,403 INFO L87 Difference]: Start difference. First operand 71 states and 73 transitions. Second operand has 5 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-24 21:59:26,566 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 21:59:26,566 INFO L93 Difference]: Finished difference Result 77 states and 80 transitions. [2023-11-24 21:59:26,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-24 21:59:26,568 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 11 [2023-11-24 21:59:26,568 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 21:59:26,570 INFO L225 Difference]: With dead ends: 77 [2023-11-24 21:59:26,570 INFO L226 Difference]: Without dead ends: 77 [2023-11-24 21:59:26,571 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-24 21:59:26,573 INFO L413 NwaCegarLoop]: 63 mSDtfsCounter, 1 mSDsluCounter, 181 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 244 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-24 21:59:26,573 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 244 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-24 21:59:26,575 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2023-11-24 21:59:26,585 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 75. [2023-11-24 21:59:26,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75 states, 36 states have (on average 1.8333333333333333) internal successors, (66), 64 states have internal predecessors, (66), 5 states have call successors, (5), 5 states have call predecessors, (5), 6 states have return successors, (6), 6 states have call predecessors, (6), 5 states have call successors, (6) [2023-11-24 21:59:26,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 77 transitions. [2023-11-24 21:59:26,587 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 77 transitions. Word has length 11 [2023-11-24 21:59:26,588 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 21:59:26,588 INFO L495 AbstractCegarLoop]: Abstraction has 75 states and 77 transitions. [2023-11-24 21:59:26,589 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-24 21:59:26,590 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 77 transitions. [2023-11-24 21:59:26,590 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2023-11-24 21:59:26,591 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 21:59:26,591 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 21:59:26,600 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed35a62b-1f6a-4515-80c2-77e5756653fd/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Ended with exit code 0 [2023-11-24 21:59:26,796 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed35a62b-1f6a-4515-80c2-77e5756653fd/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-24 21:59:26,797 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ldv_list_addErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ldv_list_addErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, LDV_INIT_LIST_HEADErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 29 more)] === [2023-11-24 21:59:26,797 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:59:26,797 INFO L85 PathProgramCache]: Analyzing trace with hash -538441415, now seen corresponding path program 1 times [2023-11-24 21:59:26,798 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-24 21:59:26,798 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1462441071] [2023-11-24 21:59:26,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:59:26,798 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 [2023-11-24 21:59:26,798 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed35a62b-1f6a-4515-80c2-77e5756653fd/bin/uautomizer-verify-NlZe1sFDwI/mathsat [2023-11-24 21:59:26,799 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed35a62b-1f6a-4515-80c2-77e5756653fd/bin/uautomizer-verify-NlZe1sFDwI/mathsat -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) [2023-11-24 21:59:26,802 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed35a62b-1f6a-4515-80c2-77e5756653fd/bin/uautomizer-verify-NlZe1sFDwI/mathsat -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 [2023-11-24 21:59:26,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:59:26,894 INFO L262 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-24 21:59:26,896 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 21:59:27,124 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:59:27,125 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 21:59:27,126 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-24 21:59:27,126 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1462441071] [2023-11-24 21:59:27,127 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1462441071] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:59:27,127 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:59:27,127 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-24 21:59:27,128 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1148392100] [2023-11-24 21:59:27,128 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:59:27,128 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-24 21:59:27,129 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-24 21:59:27,131 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-24 21:59:27,131 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-24 21:59:27,132 INFO L87 Difference]: Start difference. First operand 75 states and 77 transitions. Second operand has 5 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-24 21:59:27,893 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 21:59:27,893 INFO L93 Difference]: Finished difference Result 109 states and 112 transitions. [2023-11-24 21:59:27,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-24 21:59:27,894 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 11 [2023-11-24 21:59:27,894 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 21:59:27,895 INFO L225 Difference]: With dead ends: 109 [2023-11-24 21:59:27,895 INFO L226 Difference]: Without dead ends: 109 [2023-11-24 21:59:27,896 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-11-24 21:59:27,897 INFO L413 NwaCegarLoop]: 34 mSDtfsCounter, 62 mSDsluCounter, 46 mSDsCounter, 0 mSdLazyCounter, 190 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 80 SdHoareTripleChecker+Invalid, 204 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 190 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-11-24 21:59:27,898 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [62 Valid, 80 Invalid, 204 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 190 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-11-24 21:59:27,899 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2023-11-24 21:59:27,906 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 83. [2023-11-24 21:59:27,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 83 states, 43 states have (on average 1.7906976744186047) internal successors, (77), 70 states have internal predecessors, (77), 6 states have call successors, (6), 5 states have call predecessors, (6), 6 states have return successors, (7), 7 states have call predecessors, (7), 6 states have call successors, (7) [2023-11-24 21:59:27,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 90 transitions. [2023-11-24 21:59:27,908 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 90 transitions. Word has length 11 [2023-11-24 21:59:27,909 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 21:59:27,909 INFO L495 AbstractCegarLoop]: Abstraction has 83 states and 90 transitions. [2023-11-24 21:59:27,909 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-24 21:59:27,909 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 90 transitions. [2023-11-24 21:59:27,910 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2023-11-24 21:59:27,910 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 21:59:27,910 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 21:59:27,925 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed35a62b-1f6a-4515-80c2-77e5756653fd/bin/uautomizer-verify-NlZe1sFDwI/mathsat -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 [2023-11-24 21:59:28,125 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed35a62b-1f6a-4515-80c2-77e5756653fd/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-24 21:59:28,125 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ldv_list_addErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ldv_list_addErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, LDV_INIT_LIST_HEADErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 29 more)] === [2023-11-24 21:59:28,126 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:59:28,126 INFO L85 PathProgramCache]: Analyzing trace with hash -538441414, now seen corresponding path program 1 times [2023-11-24 21:59:28,126 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-24 21:59:28,126 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1248771919] [2023-11-24 21:59:28,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:59:28,127 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 [2023-11-24 21:59:28,127 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed35a62b-1f6a-4515-80c2-77e5756653fd/bin/uautomizer-verify-NlZe1sFDwI/mathsat [2023-11-24 21:59:28,128 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed35a62b-1f6a-4515-80c2-77e5756653fd/bin/uautomizer-verify-NlZe1sFDwI/mathsat -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) [2023-11-24 21:59:28,129 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed35a62b-1f6a-4515-80c2-77e5756653fd/bin/uautomizer-verify-NlZe1sFDwI/mathsat -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 [2023-11-24 21:59:28,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:59:28,206 INFO L262 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 10 conjunts are in the unsatisfiable core [2023-11-24 21:59:28,208 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 21:59:28,581 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:59:28,582 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 21:59:28,582 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-24 21:59:28,582 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1248771919] [2023-11-24 21:59:28,583 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1248771919] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:59:28,583 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:59:28,583 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-24 21:59:28,583 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1409896952] [2023-11-24 21:59:28,584 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:59:28,584 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-24 21:59:28,584 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-24 21:59:28,585 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-24 21:59:28,586 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-24 21:59:28,586 INFO L87 Difference]: Start difference. First operand 83 states and 90 transitions. Second operand has 5 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-24 21:59:29,266 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 21:59:29,266 INFO L93 Difference]: Finished difference Result 96 states and 101 transitions. [2023-11-24 21:59:29,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-24 21:59:29,267 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 11 [2023-11-24 21:59:29,268 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 21:59:29,269 INFO L225 Difference]: With dead ends: 96 [2023-11-24 21:59:29,269 INFO L226 Difference]: Without dead ends: 96 [2023-11-24 21:59:29,269 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-11-24 21:59:29,270 INFO L413 NwaCegarLoop]: 60 mSDtfsCounter, 33 mSDsluCounter, 79 mSDsCounter, 0 mSdLazyCounter, 178 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 139 SdHoareTripleChecker+Invalid, 185 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 178 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-24 21:59:29,271 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 139 Invalid, 185 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 178 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-24 21:59:29,271 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2023-11-24 21:59:29,277 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 79. [2023-11-24 21:59:29,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 79 states, 40 states have (on average 1.75) internal successors, (70), 67 states have internal predecessors, (70), 5 states have call successors, (5), 5 states have call predecessors, (5), 6 states have return successors, (6), 6 states have call predecessors, (6), 5 states have call successors, (6) [2023-11-24 21:59:29,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 81 transitions. [2023-11-24 21:59:29,279 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 81 transitions. Word has length 11 [2023-11-24 21:59:29,279 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 21:59:29,279 INFO L495 AbstractCegarLoop]: Abstraction has 79 states and 81 transitions. [2023-11-24 21:59:29,280 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-24 21:59:29,280 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 81 transitions. [2023-11-24 21:59:29,280 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2023-11-24 21:59:29,280 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 21:59:29,281 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 21:59:29,286 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed35a62b-1f6a-4515-80c2-77e5756653fd/bin/uautomizer-verify-NlZe1sFDwI/mathsat -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 [2023-11-24 21:59:29,483 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed35a62b-1f6a-4515-80c2-77e5756653fd/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-24 21:59:29,483 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __ldv_list_addErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ldv_list_addErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ldv_list_addErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, LDV_INIT_LIST_HEADErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 29 more)] === [2023-11-24 21:59:29,483 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:59:29,484 INFO L85 PathProgramCache]: Analyzing trace with hash 1303708717, now seen corresponding path program 1 times [2023-11-24 21:59:29,484 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-24 21:59:29,484 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1200824339] [2023-11-24 21:59:29,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:59:29,484 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 [2023-11-24 21:59:29,485 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed35a62b-1f6a-4515-80c2-77e5756653fd/bin/uautomizer-verify-NlZe1sFDwI/mathsat [2023-11-24 21:59:29,486 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed35a62b-1f6a-4515-80c2-77e5756653fd/bin/uautomizer-verify-NlZe1sFDwI/mathsat -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) [2023-11-24 21:59:29,487 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed35a62b-1f6a-4515-80c2-77e5756653fd/bin/uautomizer-verify-NlZe1sFDwI/mathsat -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 [2023-11-24 21:59:29,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:59:29,570 INFO L262 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-24 21:59:29,572 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 21:59:29,662 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2023-11-24 21:59:29,725 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:59:29,725 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 21:59:29,726 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-24 21:59:29,726 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1200824339] [2023-11-24 21:59:29,726 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1200824339] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:59:29,726 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:59:29,726 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-24 21:59:29,726 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1467761483] [2023-11-24 21:59:29,727 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:59:29,727 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-24 21:59:29,727 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-24 21:59:29,728 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-24 21:59:29,728 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-11-24 21:59:29,728 INFO L87 Difference]: Start difference. First operand 79 states and 81 transitions. Second operand has 8 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 5 states have internal predecessors, (10), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-24 21:59:30,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 21:59:30,378 INFO L93 Difference]: Finished difference Result 91 states and 92 transitions. [2023-11-24 21:59:30,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-24 21:59:30,379 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 5 states have internal predecessors, (10), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 14 [2023-11-24 21:59:30,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 21:59:30,381 INFO L225 Difference]: With dead ends: 91 [2023-11-24 21:59:30,381 INFO L226 Difference]: Without dead ends: 91 [2023-11-24 21:59:30,382 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=46, Invalid=136, Unknown=0, NotChecked=0, Total=182 [2023-11-24 21:59:30,383 INFO L413 NwaCegarLoop]: 48 mSDtfsCounter, 47 mSDsluCounter, 205 mSDsCounter, 0 mSdLazyCounter, 203 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 253 SdHoareTripleChecker+Invalid, 207 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 203 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-24 21:59:30,383 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [47 Valid, 253 Invalid, 207 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 203 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-24 21:59:30,384 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2023-11-24 21:59:30,388 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 78. [2023-11-24 21:59:30,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78 states, 40 states have (on average 1.725) internal successors, (69), 66 states have internal predecessors, (69), 5 states have call successors, (5), 5 states have call predecessors, (5), 6 states have return successors, (6), 6 states have call predecessors, (6), 5 states have call successors, (6) [2023-11-24 21:59:30,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 80 transitions. [2023-11-24 21:59:30,390 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 80 transitions. Word has length 14 [2023-11-24 21:59:30,391 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 21:59:30,391 INFO L495 AbstractCegarLoop]: Abstraction has 78 states and 80 transitions. [2023-11-24 21:59:30,391 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 5 states have internal predecessors, (10), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-24 21:59:30,391 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 80 transitions. [2023-11-24 21:59:30,392 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2023-11-24 21:59:30,392 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 21:59:30,392 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 21:59:30,404 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed35a62b-1f6a-4515-80c2-77e5756653fd/bin/uautomizer-verify-NlZe1sFDwI/mathsat -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 [2023-11-24 21:59:30,594 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed35a62b-1f6a-4515-80c2-77e5756653fd/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-24 21:59:30,595 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __ldv_list_addErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ldv_list_addErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ldv_list_addErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, LDV_INIT_LIST_HEADErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 29 more)] === [2023-11-24 21:59:30,595 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:59:30,596 INFO L85 PathProgramCache]: Analyzing trace with hash 1303708718, now seen corresponding path program 1 times [2023-11-24 21:59:30,596 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-24 21:59:30,596 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1658327972] [2023-11-24 21:59:30,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:59:30,596 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 [2023-11-24 21:59:30,596 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed35a62b-1f6a-4515-80c2-77e5756653fd/bin/uautomizer-verify-NlZe1sFDwI/mathsat [2023-11-24 21:59:30,597 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed35a62b-1f6a-4515-80c2-77e5756653fd/bin/uautomizer-verify-NlZe1sFDwI/mathsat -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) [2023-11-24 21:59:30,599 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed35a62b-1f6a-4515-80c2-77e5756653fd/bin/uautomizer-verify-NlZe1sFDwI/mathsat -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 [2023-11-24 21:59:30,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:59:30,693 INFO L262 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 27 conjunts are in the unsatisfiable core [2023-11-24 21:59:30,696 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 21:59:30,999 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:59:31,000 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 9 [2023-11-24 21:59:31,334 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:59:31,335 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 21:59:31,335 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-24 21:59:31,335 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1658327972] [2023-11-24 21:59:31,335 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1658327972] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:59:31,335 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:59:31,336 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-11-24 21:59:31,336 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1334391938] [2023-11-24 21:59:31,336 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:59:31,336 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-24 21:59:31,337 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-24 21:59:31,337 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-24 21:59:31,338 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2023-11-24 21:59:31,338 INFO L87 Difference]: Start difference. First operand 78 states and 80 transitions. Second operand has 11 states, 8 states have (on average 1.25) internal successors, (10), 8 states have internal predecessors, (10), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-24 21:59:33,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 21:59:33,178 INFO L93 Difference]: Finished difference Result 86 states and 89 transitions. [2023-11-24 21:59:33,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-24 21:59:33,179 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 8 states have (on average 1.25) internal successors, (10), 8 states have internal predecessors, (10), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 14 [2023-11-24 21:59:33,179 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 21:59:33,180 INFO L225 Difference]: With dead ends: 86 [2023-11-24 21:59:33,180 INFO L226 Difference]: Without dead ends: 86 [2023-11-24 21:59:33,181 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=100, Invalid=320, Unknown=0, NotChecked=0, Total=420 [2023-11-24 21:59:33,182 INFO L413 NwaCegarLoop]: 40 mSDtfsCounter, 65 mSDsluCounter, 196 mSDsCounter, 0 mSdLazyCounter, 399 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 236 SdHoareTripleChecker+Invalid, 417 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 399 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-11-24 21:59:33,183 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [65 Valid, 236 Invalid, 417 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 399 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-11-24 21:59:33,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2023-11-24 21:59:33,192 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 77. [2023-11-24 21:59:33,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 77 states, 40 states have (on average 1.7) internal successors, (68), 65 states have internal predecessors, (68), 5 states have call successors, (5), 5 states have call predecessors, (5), 6 states have return successors, (6), 6 states have call predecessors, (6), 5 states have call successors, (6) [2023-11-24 21:59:33,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 79 transitions. [2023-11-24 21:59:33,195 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 79 transitions. Word has length 14 [2023-11-24 21:59:33,195 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 21:59:33,195 INFO L495 AbstractCegarLoop]: Abstraction has 77 states and 79 transitions. [2023-11-24 21:59:33,196 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 8 states have (on average 1.25) internal successors, (10), 8 states have internal predecessors, (10), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-24 21:59:33,196 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 79 transitions. [2023-11-24 21:59:33,197 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2023-11-24 21:59:33,197 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 21:59:33,197 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 21:59:33,209 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed35a62b-1f6a-4515-80c2-77e5756653fd/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Ended with exit code 0 [2023-11-24 21:59:33,405 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed35a62b-1f6a-4515-80c2-77e5756653fd/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-24 21:59:33,405 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __ldv_list_addErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ldv_list_addErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ldv_list_addErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, LDV_INIT_LIST_HEADErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 29 more)] === [2023-11-24 21:59:33,406 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:59:33,406 INFO L85 PathProgramCache]: Analyzing trace with hash 1760264569, now seen corresponding path program 1 times [2023-11-24 21:59:33,406 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-24 21:59:33,406 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1572995717] [2023-11-24 21:59:33,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:59:33,407 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 [2023-11-24 21:59:33,407 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed35a62b-1f6a-4515-80c2-77e5756653fd/bin/uautomizer-verify-NlZe1sFDwI/mathsat [2023-11-24 21:59:33,411 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed35a62b-1f6a-4515-80c2-77e5756653fd/bin/uautomizer-verify-NlZe1sFDwI/mathsat -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) [2023-11-24 21:59:33,411 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed35a62b-1f6a-4515-80c2-77e5756653fd/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2023-11-24 21:59:33,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:59:33,509 INFO L262 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-24 21:59:33,512 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 21:59:33,518 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 [2023-11-24 21:59:33,641 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:59:33,641 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 21:59:33,641 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-24 21:59:33,642 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1572995717] [2023-11-24 21:59:33,642 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1572995717] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:59:33,642 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:59:33,642 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-24 21:59:33,642 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1657072678] [2023-11-24 21:59:33,643 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:59:33,643 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-24 21:59:33,643 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-24 21:59:33,644 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-24 21:59:33,644 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-11-24 21:59:33,645 INFO L87 Difference]: Start difference. First operand 77 states and 79 transitions. Second operand has 9 states, 8 states have (on average 1.375) internal successors, (11), 6 states have internal predecessors, (11), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-24 21:59:34,386 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 21:59:34,386 INFO L93 Difference]: Finished difference Result 93 states and 95 transitions. [2023-11-24 21:59:34,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-24 21:59:34,387 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 1.375) internal successors, (11), 6 states have internal predecessors, (11), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 15 [2023-11-24 21:59:34,387 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 21:59:34,388 INFO L225 Difference]: With dead ends: 93 [2023-11-24 21:59:34,388 INFO L226 Difference]: Without dead ends: 93 [2023-11-24 21:59:34,389 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2023-11-24 21:59:34,390 INFO L413 NwaCegarLoop]: 48 mSDtfsCounter, 25 mSDsluCounter, 206 mSDsCounter, 0 mSdLazyCounter, 307 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 254 SdHoareTripleChecker+Invalid, 312 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 307 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-11-24 21:59:34,390 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 254 Invalid, 312 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 307 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-11-24 21:59:34,391 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2023-11-24 21:59:34,396 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 88. [2023-11-24 21:59:34,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88 states, 48 states have (on average 1.6458333333333333) internal successors, (79), 73 states have internal predecessors, (79), 7 states have call successors, (7), 7 states have call predecessors, (7), 8 states have return successors, (8), 7 states have call predecessors, (8), 7 states have call successors, (8) [2023-11-24 21:59:34,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 94 transitions. [2023-11-24 21:59:34,399 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 94 transitions. Word has length 15 [2023-11-24 21:59:34,399 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 21:59:34,399 INFO L495 AbstractCegarLoop]: Abstraction has 88 states and 94 transitions. [2023-11-24 21:59:34,400 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 1.375) internal successors, (11), 6 states have internal predecessors, (11), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-24 21:59:34,400 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 94 transitions. [2023-11-24 21:59:34,401 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2023-11-24 21:59:34,401 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 21:59:34,401 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 21:59:34,408 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed35a62b-1f6a-4515-80c2-77e5756653fd/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2023-11-24 21:59:34,605 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed35a62b-1f6a-4515-80c2-77e5756653fd/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-24 21:59:34,605 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __ldv_list_addErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ldv_list_addErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ldv_list_addErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, LDV_INIT_LIST_HEADErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 29 more)] === [2023-11-24 21:59:34,606 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:59:34,606 INFO L85 PathProgramCache]: Analyzing trace with hash 1760264570, now seen corresponding path program 1 times [2023-11-24 21:59:34,606 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-24 21:59:34,606 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1934731625] [2023-11-24 21:59:34,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:59:34,607 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 [2023-11-24 21:59:34,607 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed35a62b-1f6a-4515-80c2-77e5756653fd/bin/uautomizer-verify-NlZe1sFDwI/mathsat [2023-11-24 21:59:34,608 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed35a62b-1f6a-4515-80c2-77e5756653fd/bin/uautomizer-verify-NlZe1sFDwI/mathsat -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) [2023-11-24 21:59:34,609 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed35a62b-1f6a-4515-80c2-77e5756653fd/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2023-11-24 21:59:34,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:59:34,701 INFO L262 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 18 conjunts are in the unsatisfiable core [2023-11-24 21:59:34,704 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 21:59:34,726 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 [2023-11-24 21:59:34,989 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:59:34,989 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 21:59:34,989 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-24 21:59:34,989 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1934731625] [2023-11-24 21:59:34,989 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1934731625] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:59:34,989 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:59:34,990 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-11-24 21:59:34,990 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2001578697] [2023-11-24 21:59:34,990 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:59:34,990 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-24 21:59:34,990 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-24 21:59:34,991 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-24 21:59:34,991 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2023-11-24 21:59:34,992 INFO L87 Difference]: Start difference. First operand 88 states and 94 transitions. Second operand has 10 states, 9 states have (on average 1.2222222222222223) internal successors, (11), 7 states have internal predecessors, (11), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-24 21:59:35,879 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 21:59:35,879 INFO L93 Difference]: Finished difference Result 91 states and 93 transitions. [2023-11-24 21:59:35,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-24 21:59:35,880 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 1.2222222222222223) internal successors, (11), 7 states have internal predecessors, (11), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 15 [2023-11-24 21:59:35,880 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 21:59:35,881 INFO L225 Difference]: With dead ends: 91 [2023-11-24 21:59:35,881 INFO L226 Difference]: Without dead ends: 91 [2023-11-24 21:59:35,881 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2023-11-24 21:59:35,882 INFO L413 NwaCegarLoop]: 48 mSDtfsCounter, 20 mSDsluCounter, 269 mSDsCounter, 0 mSdLazyCounter, 317 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 317 SdHoareTripleChecker+Invalid, 320 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 317 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-11-24 21:59:35,882 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 317 Invalid, 320 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 317 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-11-24 21:59:35,883 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2023-11-24 21:59:35,886 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 88. [2023-11-24 21:59:35,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88 states, 48 states have (on average 1.6041666666666667) internal successors, (77), 73 states have internal predecessors, (77), 7 states have call successors, (7), 7 states have call predecessors, (7), 8 states have return successors, (8), 7 states have call predecessors, (8), 7 states have call successors, (8) [2023-11-24 21:59:35,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 92 transitions. [2023-11-24 21:59:35,888 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 92 transitions. Word has length 15 [2023-11-24 21:59:35,889 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 21:59:35,889 INFO L495 AbstractCegarLoop]: Abstraction has 88 states and 92 transitions. [2023-11-24 21:59:35,889 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 1.2222222222222223) internal successors, (11), 7 states have internal predecessors, (11), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-24 21:59:35,889 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 92 transitions. [2023-11-24 21:59:35,890 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2023-11-24 21:59:35,890 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 21:59:35,890 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 21:59:35,902 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed35a62b-1f6a-4515-80c2-77e5756653fd/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Ended with exit code 0 [2023-11-24 21:59:36,093 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed35a62b-1f6a-4515-80c2-77e5756653fd/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-24 21:59:36,093 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __ldv_list_addErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ldv_list_addErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ldv_list_addErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, LDV_INIT_LIST_HEADErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 29 more)] === [2023-11-24 21:59:36,093 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:59:36,094 INFO L85 PathProgramCache]: Analyzing trace with hash 1889347288, now seen corresponding path program 1 times [2023-11-24 21:59:36,094 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-24 21:59:36,094 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [25841293] [2023-11-24 21:59:36,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:59:36,095 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 [2023-11-24 21:59:36,095 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed35a62b-1f6a-4515-80c2-77e5756653fd/bin/uautomizer-verify-NlZe1sFDwI/mathsat [2023-11-24 21:59:36,096 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed35a62b-1f6a-4515-80c2-77e5756653fd/bin/uautomizer-verify-NlZe1sFDwI/mathsat -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) [2023-11-24 21:59:36,100 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed35a62b-1f6a-4515-80c2-77e5756653fd/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2023-11-24 21:59:36,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:59:36,166 INFO L262 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-24 21:59:36,167 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 21:59:36,213 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:59:36,213 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 21:59:36,214 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-24 21:59:36,214 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [25841293] [2023-11-24 21:59:36,214 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [25841293] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:59:36,214 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:59:36,214 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-24 21:59:36,214 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [840635142] [2023-11-24 21:59:36,214 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:59:36,215 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-24 21:59:36,215 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-24 21:59:36,215 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-24 21:59:36,215 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-24 21:59:36,215 INFO L87 Difference]: Start difference. First operand 88 states and 92 transitions. Second operand has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-24 21:59:36,326 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 21:59:36,326 INFO L93 Difference]: Finished difference Result 73 states and 74 transitions. [2023-11-24 21:59:36,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-24 21:59:36,327 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 15 [2023-11-24 21:59:36,327 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 21:59:36,328 INFO L225 Difference]: With dead ends: 73 [2023-11-24 21:59:36,328 INFO L226 Difference]: Without dead ends: 73 [2023-11-24 21:59:36,328 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-24 21:59:36,329 INFO L413 NwaCegarLoop]: 58 mSDtfsCounter, 1 mSDsluCounter, 165 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 223 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-24 21:59:36,329 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 223 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-24 21:59:36,330 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2023-11-24 21:59:36,332 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 73. [2023-11-24 21:59:36,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73 states, 40 states have (on average 1.575) internal successors, (63), 61 states have internal predecessors, (63), 5 states have call successors, (5), 5 states have call predecessors, (5), 6 states have return successors, (6), 6 states have call predecessors, (6), 5 states have call successors, (6) [2023-11-24 21:59:36,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 74 transitions. [2023-11-24 21:59:36,334 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 74 transitions. Word has length 15 [2023-11-24 21:59:36,334 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 21:59:36,334 INFO L495 AbstractCegarLoop]: Abstraction has 73 states and 74 transitions. [2023-11-24 21:59:36,334 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-24 21:59:36,334 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 74 transitions. [2023-11-24 21:59:36,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2023-11-24 21:59:36,335 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 21:59:36,335 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 21:59:36,340 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed35a62b-1f6a-4515-80c2-77e5756653fd/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2023-11-24 21:59:36,538 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed35a62b-1f6a-4515-80c2-77e5756653fd/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-24 21:59:36,538 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting __ldv_list_addErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ldv_list_addErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ldv_list_addErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, LDV_INIT_LIST_HEADErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 29 more)] === [2023-11-24 21:59:36,538 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:59:36,538 INFO L85 PathProgramCache]: Analyzing trace with hash -602863524, now seen corresponding path program 1 times [2023-11-24 21:59:36,538 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-24 21:59:36,539 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2092969111] [2023-11-24 21:59:36,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:59:36,539 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 [2023-11-24 21:59:36,539 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed35a62b-1f6a-4515-80c2-77e5756653fd/bin/uautomizer-verify-NlZe1sFDwI/mathsat [2023-11-24 21:59:36,540 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed35a62b-1f6a-4515-80c2-77e5756653fd/bin/uautomizer-verify-NlZe1sFDwI/mathsat -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) [2023-11-24 21:59:36,542 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed35a62b-1f6a-4515-80c2-77e5756653fd/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2023-11-24 21:59:36,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:59:36,644 INFO L262 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-24 21:59:36,646 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 21:59:36,686 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:59:36,686 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 21:59:36,686 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-24 21:59:36,686 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2092969111] [2023-11-24 21:59:36,686 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2092969111] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:59:36,687 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:59:36,687 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-24 21:59:36,687 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [788935065] [2023-11-24 21:59:36,687 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:59:36,688 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-24 21:59:36,688 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-24 21:59:36,688 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-24 21:59:36,689 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-24 21:59:36,689 INFO L87 Difference]: Start difference. First operand 73 states and 74 transitions. Second operand has 5 states, 3 states have (on average 4.333333333333333) internal successors, (13), 4 states have internal predecessors, (13), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-24 21:59:36,938 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 21:59:36,938 INFO L93 Difference]: Finished difference Result 72 states and 73 transitions. [2023-11-24 21:59:36,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-24 21:59:36,939 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 3 states have (on average 4.333333333333333) internal successors, (13), 4 states have internal predecessors, (13), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 17 [2023-11-24 21:59:36,940 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 21:59:36,940 INFO L225 Difference]: With dead ends: 72 [2023-11-24 21:59:36,940 INFO L226 Difference]: Without dead ends: 72 [2023-11-24 21:59:36,941 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-24 21:59:36,942 INFO L413 NwaCegarLoop]: 50 mSDtfsCounter, 9 mSDsluCounter, 98 mSDsCounter, 0 mSdLazyCounter, 100 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 148 SdHoareTripleChecker+Invalid, 100 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 100 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-24 21:59:36,942 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 148 Invalid, 100 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 100 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-24 21:59:36,943 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2023-11-24 21:59:36,945 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 72. [2023-11-24 21:59:36,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72 states, 40 states have (on average 1.55) internal successors, (62), 60 states have internal predecessors, (62), 5 states have call successors, (5), 5 states have call predecessors, (5), 6 states have return successors, (6), 6 states have call predecessors, (6), 5 states have call successors, (6) [2023-11-24 21:59:36,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 73 transitions. [2023-11-24 21:59:36,947 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 73 transitions. Word has length 17 [2023-11-24 21:59:36,947 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 21:59:36,947 INFO L495 AbstractCegarLoop]: Abstraction has 72 states and 73 transitions. [2023-11-24 21:59:36,948 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 3 states have (on average 4.333333333333333) internal successors, (13), 4 states have internal predecessors, (13), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-24 21:59:36,948 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 73 transitions. [2023-11-24 21:59:36,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2023-11-24 21:59:36,949 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 21:59:36,949 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 21:59:36,957 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed35a62b-1f6a-4515-80c2-77e5756653fd/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2023-11-24 21:59:37,152 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed35a62b-1f6a-4515-80c2-77e5756653fd/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-24 21:59:37,152 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting __ldv_list_addErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ldv_list_addErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ldv_list_addErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, LDV_INIT_LIST_HEADErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 29 more)] === [2023-11-24 21:59:37,152 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:59:37,153 INFO L85 PathProgramCache]: Analyzing trace with hash -602863523, now seen corresponding path program 1 times [2023-11-24 21:59:37,153 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-24 21:59:37,153 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1739136063] [2023-11-24 21:59:37,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:59:37,154 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 [2023-11-24 21:59:37,154 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed35a62b-1f6a-4515-80c2-77e5756653fd/bin/uautomizer-verify-NlZe1sFDwI/mathsat [2023-11-24 21:59:37,155 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed35a62b-1f6a-4515-80c2-77e5756653fd/bin/uautomizer-verify-NlZe1sFDwI/mathsat -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) [2023-11-24 21:59:37,156 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed35a62b-1f6a-4515-80c2-77e5756653fd/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2023-11-24 21:59:37,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:59:37,274 INFO L262 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-24 21:59:37,276 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 21:59:37,452 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:59:37,452 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 21:59:37,452 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-24 21:59:37,453 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1739136063] [2023-11-24 21:59:37,453 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1739136063] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:59:37,453 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:59:37,453 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-24 21:59:37,453 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1630839414] [2023-11-24 21:59:37,453 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:59:37,473 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-24 21:59:37,473 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-24 21:59:37,473 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-24 21:59:37,474 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-11-24 21:59:37,474 INFO L87 Difference]: Start difference. First operand 72 states and 73 transitions. Second operand has 8 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 5 states have internal predecessors, (13), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-24 21:59:37,980 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 21:59:37,981 INFO L93 Difference]: Finished difference Result 71 states and 72 transitions. [2023-11-24 21:59:37,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-24 21:59:37,982 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 5 states have internal predecessors, (13), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 17 [2023-11-24 21:59:37,982 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 21:59:37,983 INFO L225 Difference]: With dead ends: 71 [2023-11-24 21:59:37,983 INFO L226 Difference]: Without dead ends: 71 [2023-11-24 21:59:37,983 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2023-11-24 21:59:37,984 INFO L413 NwaCegarLoop]: 44 mSDtfsCounter, 65 mSDsluCounter, 142 mSDsCounter, 0 mSdLazyCounter, 120 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 66 SdHoareTripleChecker+Valid, 186 SdHoareTripleChecker+Invalid, 125 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 120 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-24 21:59:37,985 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [66 Valid, 186 Invalid, 125 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 120 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-24 21:59:37,985 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2023-11-24 21:59:37,988 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 71. [2023-11-24 21:59:37,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71 states, 40 states have (on average 1.525) internal successors, (61), 59 states have internal predecessors, (61), 5 states have call successors, (5), 5 states have call predecessors, (5), 6 states have return successors, (6), 6 states have call predecessors, (6), 5 states have call successors, (6) [2023-11-24 21:59:37,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 72 transitions. [2023-11-24 21:59:37,990 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 72 transitions. Word has length 17 [2023-11-24 21:59:37,991 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 21:59:37,991 INFO L495 AbstractCegarLoop]: Abstraction has 71 states and 72 transitions. [2023-11-24 21:59:37,991 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 5 states have internal predecessors, (13), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-24 21:59:37,991 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 72 transitions. [2023-11-24 21:59:37,992 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2023-11-24 21:59:37,992 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 21:59:37,993 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 21:59:37,999 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed35a62b-1f6a-4515-80c2-77e5756653fd/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2023-11-24 21:59:38,196 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed35a62b-1f6a-4515-80c2-77e5756653fd/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-24 21:59:38,196 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting LDV_INIT_LIST_HEADErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ldv_list_addErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ldv_list_addErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, LDV_INIT_LIST_HEADErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 29 more)] === [2023-11-24 21:59:38,197 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:59:38,197 INFO L85 PathProgramCache]: Analyzing trace with hash -349258477, now seen corresponding path program 1 times [2023-11-24 21:59:38,197 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-24 21:59:38,197 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [472921679] [2023-11-24 21:59:38,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:59:38,198 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 [2023-11-24 21:59:38,198 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed35a62b-1f6a-4515-80c2-77e5756653fd/bin/uautomizer-verify-NlZe1sFDwI/mathsat [2023-11-24 21:59:38,199 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed35a62b-1f6a-4515-80c2-77e5756653fd/bin/uautomizer-verify-NlZe1sFDwI/mathsat -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) [2023-11-24 21:59:38,201 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed35a62b-1f6a-4515-80c2-77e5756653fd/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2023-11-24 21:59:38,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:59:38,281 INFO L262 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-24 21:59:38,283 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 21:59:38,448 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:59:38,448 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 21:59:38,448 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-24 21:59:38,448 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [472921679] [2023-11-24 21:59:38,448 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [472921679] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:59:38,449 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:59:38,449 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-24 21:59:38,449 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1368899113] [2023-11-24 21:59:38,449 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:59:38,449 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-24 21:59:38,449 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-24 21:59:38,450 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-24 21:59:38,450 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-24 21:59:38,451 INFO L87 Difference]: Start difference. First operand 71 states and 72 transitions. Second operand has 6 states, 5 states have (on average 2.6) internal successors, (13), 4 states have internal predecessors, (13), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-24 21:59:39,097 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 21:59:39,098 INFO L93 Difference]: Finished difference Result 104 states and 105 transitions. [2023-11-24 21:59:39,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-24 21:59:39,098 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.6) internal successors, (13), 4 states have internal predecessors, (13), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 16 [2023-11-24 21:59:39,099 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 21:59:39,100 INFO L225 Difference]: With dead ends: 104 [2023-11-24 21:59:39,100 INFO L226 Difference]: Without dead ends: 104 [2023-11-24 21:59:39,100 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2023-11-24 21:59:39,101 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 80 mSDsluCounter, 65 mSDsCounter, 0 mSdLazyCounter, 202 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 83 SdHoareTripleChecker+Valid, 89 SdHoareTripleChecker+Invalid, 211 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 202 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-24 21:59:39,102 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [83 Valid, 89 Invalid, 211 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 202 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-24 21:59:39,103 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2023-11-24 21:59:39,120 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 78. [2023-11-24 21:59:39,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78 states, 45 states have (on average 1.5333333333333334) internal successors, (69), 65 states have internal predecessors, (69), 6 states have call successors, (6), 6 states have call predecessors, (6), 7 states have return successors, (7), 6 states have call predecessors, (7), 6 states have call successors, (7) [2023-11-24 21:59:39,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 82 transitions. [2023-11-24 21:59:39,122 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 82 transitions. Word has length 16 [2023-11-24 21:59:39,122 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 21:59:39,122 INFO L495 AbstractCegarLoop]: Abstraction has 78 states and 82 transitions. [2023-11-24 21:59:39,122 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.6) internal successors, (13), 4 states have internal predecessors, (13), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-24 21:59:39,123 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 82 transitions. [2023-11-24 21:59:39,123 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2023-11-24 21:59:39,124 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 21:59:39,124 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 21:59:39,136 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed35a62b-1f6a-4515-80c2-77e5756653fd/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2023-11-24 21:59:39,336 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed35a62b-1f6a-4515-80c2-77e5756653fd/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-24 21:59:39,336 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting LDV_INIT_LIST_HEADErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ldv_list_addErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ldv_list_addErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, LDV_INIT_LIST_HEADErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 29 more)] === [2023-11-24 21:59:39,337 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:59:39,337 INFO L85 PathProgramCache]: Analyzing trace with hash -349258476, now seen corresponding path program 1 times [2023-11-24 21:59:39,337 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-24 21:59:39,338 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [61391455] [2023-11-24 21:59:39,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:59:39,338 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 [2023-11-24 21:59:39,338 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed35a62b-1f6a-4515-80c2-77e5756653fd/bin/uautomizer-verify-NlZe1sFDwI/mathsat [2023-11-24 21:59:39,339 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed35a62b-1f6a-4515-80c2-77e5756653fd/bin/uautomizer-verify-NlZe1sFDwI/mathsat -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) [2023-11-24 21:59:39,341 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed35a62b-1f6a-4515-80c2-77e5756653fd/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2023-11-24 21:59:39,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:59:39,419 INFO L262 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 10 conjunts are in the unsatisfiable core [2023-11-24 21:59:39,421 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 21:59:39,694 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:59:39,694 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 21:59:39,694 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-24 21:59:39,694 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [61391455] [2023-11-24 21:59:39,695 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [61391455] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:59:39,695 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:59:39,695 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-24 21:59:39,695 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1063261452] [2023-11-24 21:59:39,695 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:59:39,696 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-24 21:59:39,696 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-24 21:59:39,697 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-24 21:59:39,697 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-24 21:59:39,697 INFO L87 Difference]: Start difference. First operand 78 states and 82 transitions. Second operand has 6 states, 5 states have (on average 2.6) internal successors, (13), 4 states have internal predecessors, (13), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-24 21:59:40,273 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 21:59:40,273 INFO L93 Difference]: Finished difference Result 87 states and 90 transitions. [2023-11-24 21:59:40,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-24 21:59:40,274 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.6) internal successors, (13), 4 states have internal predecessors, (13), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 16 [2023-11-24 21:59:40,274 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 21:59:40,275 INFO L225 Difference]: With dead ends: 87 [2023-11-24 21:59:40,275 INFO L226 Difference]: Without dead ends: 87 [2023-11-24 21:59:40,276 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2023-11-24 21:59:40,276 INFO L413 NwaCegarLoop]: 52 mSDtfsCounter, 18 mSDsluCounter, 118 mSDsCounter, 0 mSdLazyCounter, 158 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 170 SdHoareTripleChecker+Invalid, 160 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 158 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-24 21:59:40,277 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 170 Invalid, 160 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 158 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-24 21:59:40,277 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2023-11-24 21:59:40,280 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 84. [2023-11-24 21:59:40,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84 states, 49 states have (on average 1.489795918367347) internal successors, (73), 70 states have internal predecessors, (73), 7 states have call successors, (7), 7 states have call predecessors, (7), 8 states have return successors, (8), 6 states have call predecessors, (8), 7 states have call successors, (8) [2023-11-24 21:59:40,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 88 transitions. [2023-11-24 21:59:40,282 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 88 transitions. Word has length 16 [2023-11-24 21:59:40,283 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 21:59:40,283 INFO L495 AbstractCegarLoop]: Abstraction has 84 states and 88 transitions. [2023-11-24 21:59:40,283 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.6) internal successors, (13), 4 states have internal predecessors, (13), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-24 21:59:40,283 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 88 transitions. [2023-11-24 21:59:40,284 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2023-11-24 21:59:40,285 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 21:59:40,285 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 21:59:40,288 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed35a62b-1f6a-4515-80c2-77e5756653fd/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2023-11-24 21:59:40,488 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed35a62b-1f6a-4515-80c2-77e5756653fd/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-24 21:59:40,488 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_LEAK === [ldv_list_addErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ldv_list_addErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, LDV_INIT_LIST_HEADErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 29 more)] === [2023-11-24 21:59:40,489 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:59:40,489 INFO L85 PathProgramCache]: Analyzing trace with hash 213669778, now seen corresponding path program 1 times [2023-11-24 21:59:40,489 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-24 21:59:40,489 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1496054848] [2023-11-24 21:59:40,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:59:40,490 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 [2023-11-24 21:59:40,490 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed35a62b-1f6a-4515-80c2-77e5756653fd/bin/uautomizer-verify-NlZe1sFDwI/mathsat [2023-11-24 21:59:40,491 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed35a62b-1f6a-4515-80c2-77e5756653fd/bin/uautomizer-verify-NlZe1sFDwI/mathsat -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) [2023-11-24 21:59:40,499 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed35a62b-1f6a-4515-80c2-77e5756653fd/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2023-11-24 21:59:40,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:59:40,616 INFO L262 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-24 21:59:40,618 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 21:59:40,672 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:59:40,672 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 21:59:40,672 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-24 21:59:40,672 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1496054848] [2023-11-24 21:59:40,673 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1496054848] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:59:40,673 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:59:40,673 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-24 21:59:40,674 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [742878503] [2023-11-24 21:59:40,674 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:59:40,674 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-24 21:59:40,675 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-24 21:59:40,675 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-24 21:59:40,676 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-24 21:59:40,676 INFO L87 Difference]: Start difference. First operand 84 states and 88 transitions. Second operand has 4 states, 3 states have (on average 5.333333333333333) internal successors, (16), 4 states have internal predecessors, (16), 1 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-24 21:59:40,973 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 21:59:40,973 INFO L93 Difference]: Finished difference Result 86 states and 89 transitions. [2023-11-24 21:59:40,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-24 21:59:40,974 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 5.333333333333333) internal successors, (16), 4 states have internal predecessors, (16), 1 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 20 [2023-11-24 21:59:40,975 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 21:59:40,975 INFO L225 Difference]: With dead ends: 86 [2023-11-24 21:59:40,976 INFO L226 Difference]: Without dead ends: 70 [2023-11-24 21:59:40,976 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-24 21:59:40,977 INFO L413 NwaCegarLoop]: 30 mSDtfsCounter, 29 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 97 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 66 SdHoareTripleChecker+Invalid, 101 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 97 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-24 21:59:40,978 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 66 Invalid, 101 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 97 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-24 21:59:40,979 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2023-11-24 21:59:40,982 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 70. [2023-11-24 21:59:40,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70 states, 38 states have (on average 1.605263157894737) internal successors, (61), 58 states have internal predecessors, (61), 6 states have call successors, (6), 6 states have call predecessors, (6), 6 states have return successors, (6), 5 states have call predecessors, (6), 6 states have call successors, (6) [2023-11-24 21:59:40,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 73 transitions. [2023-11-24 21:59:40,984 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 73 transitions. Word has length 20 [2023-11-24 21:59:40,984 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 21:59:40,984 INFO L495 AbstractCegarLoop]: Abstraction has 70 states and 73 transitions. [2023-11-24 21:59:40,985 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 5.333333333333333) internal successors, (16), 4 states have internal predecessors, (16), 1 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-24 21:59:40,985 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 73 transitions. [2023-11-24 21:59:40,986 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2023-11-24 21:59:40,986 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 21:59:40,986 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 21:59:40,990 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed35a62b-1f6a-4515-80c2-77e5756653fd/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2023-11-24 21:59:41,189 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed35a62b-1f6a-4515-80c2-77e5756653fd/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-24 21:59:41,190 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ldv_list_addErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ldv_list_addErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, LDV_INIT_LIST_HEADErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 29 more)] === [2023-11-24 21:59:41,190 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:59:41,191 INFO L85 PathProgramCache]: Analyzing trace with hash -1533974863, now seen corresponding path program 1 times [2023-11-24 21:59:41,191 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-24 21:59:41,192 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1477376208] [2023-11-24 21:59:41,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:59:41,192 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 [2023-11-24 21:59:41,192 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed35a62b-1f6a-4515-80c2-77e5756653fd/bin/uautomizer-verify-NlZe1sFDwI/mathsat [2023-11-24 21:59:41,194 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed35a62b-1f6a-4515-80c2-77e5756653fd/bin/uautomizer-verify-NlZe1sFDwI/mathsat -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) [2023-11-24 21:59:41,198 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed35a62b-1f6a-4515-80c2-77e5756653fd/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2023-11-24 21:59:41,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:59:41,346 INFO L262 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 21 conjunts are in the unsatisfiable core [2023-11-24 21:59:41,349 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 21:59:41,354 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 [2023-11-24 21:59:41,638 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-11-24 21:59:41,841 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2023-11-24 21:59:41,908 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:59:41,909 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 21:59:41,909 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-24 21:59:41,909 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1477376208] [2023-11-24 21:59:41,910 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1477376208] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:59:41,910 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:59:41,910 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-11-24 21:59:41,910 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [843626216] [2023-11-24 21:59:41,911 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:59:41,911 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-24 21:59:41,911 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-24 21:59:41,912 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-24 21:59:41,912 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2023-11-24 21:59:41,913 INFO L87 Difference]: Start difference. First operand 70 states and 73 transitions. Second operand has 12 states, 10 states have (on average 1.7) internal successors, (17), 10 states have internal predecessors, (17), 3 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-24 21:59:43,432 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 21:59:43,432 INFO L93 Difference]: Finished difference Result 90 states and 91 transitions. [2023-11-24 21:59:43,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-24 21:59:43,433 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 10 states have (on average 1.7) internal successors, (17), 10 states have internal predecessors, (17), 3 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 23 [2023-11-24 21:59:43,434 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 21:59:43,434 INFO L225 Difference]: With dead ends: 90 [2023-11-24 21:59:43,435 INFO L226 Difference]: Without dead ends: 90 [2023-11-24 21:59:43,435 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=70, Invalid=310, Unknown=0, NotChecked=0, Total=380 [2023-11-24 21:59:43,436 INFO L413 NwaCegarLoop]: 25 mSDtfsCounter, 93 mSDsluCounter, 142 mSDsCounter, 0 mSdLazyCounter, 396 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 93 SdHoareTripleChecker+Valid, 167 SdHoareTripleChecker+Invalid, 414 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 396 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-11-24 21:59:43,436 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [93 Valid, 167 Invalid, 414 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 396 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-11-24 21:59:43,437 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2023-11-24 21:59:43,440 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 73. [2023-11-24 21:59:43,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73 states, 41 states have (on average 1.5853658536585367) internal successors, (65), 60 states have internal predecessors, (65), 7 states have call successors, (7), 6 states have call predecessors, (7), 6 states have return successors, (7), 6 states have call predecessors, (7), 7 states have call successors, (7) [2023-11-24 21:59:43,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 79 transitions. [2023-11-24 21:59:43,442 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 79 transitions. Word has length 23 [2023-11-24 21:59:43,443 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 21:59:43,443 INFO L495 AbstractCegarLoop]: Abstraction has 73 states and 79 transitions. [2023-11-24 21:59:43,443 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 10 states have (on average 1.7) internal successors, (17), 10 states have internal predecessors, (17), 3 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-24 21:59:43,443 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 79 transitions. [2023-11-24 21:59:43,444 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2023-11-24 21:59:43,444 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 21:59:43,444 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 21:59:43,453 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed35a62b-1f6a-4515-80c2-77e5756653fd/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2023-11-24 21:59:43,648 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed35a62b-1f6a-4515-80c2-77e5756653fd/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-24 21:59:43,648 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ldv_list_addErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ldv_list_addErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, LDV_INIT_LIST_HEADErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 29 more)] === [2023-11-24 21:59:43,648 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:59:43,648 INFO L85 PathProgramCache]: Analyzing trace with hash -1533974862, now seen corresponding path program 1 times [2023-11-24 21:59:43,649 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-24 21:59:43,649 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [207429322] [2023-11-24 21:59:43,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:59:43,649 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 [2023-11-24 21:59:43,649 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed35a62b-1f6a-4515-80c2-77e5756653fd/bin/uautomizer-verify-NlZe1sFDwI/mathsat [2023-11-24 21:59:43,656 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed35a62b-1f6a-4515-80c2-77e5756653fd/bin/uautomizer-verify-NlZe1sFDwI/mathsat -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) [2023-11-24 21:59:43,658 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed35a62b-1f6a-4515-80c2-77e5756653fd/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2023-11-24 21:59:43,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:59:43,813 INFO L262 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 33 conjunts are in the unsatisfiable core [2023-11-24 21:59:43,817 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 21:59:43,838 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 [2023-11-24 21:59:44,242 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-11-24 21:59:44,255 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-11-24 21:59:44,541 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2023-11-24 21:59:44,620 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:59:44,620 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 21:59:44,620 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-24 21:59:44,620 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [207429322] [2023-11-24 21:59:44,620 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [207429322] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:59:44,620 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:59:44,621 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-11-24 21:59:44,621 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1072962309] [2023-11-24 21:59:44,621 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:59:44,621 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-11-24 21:59:44,621 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-24 21:59:44,622 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-11-24 21:59:44,622 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2023-11-24 21:59:44,622 INFO L87 Difference]: Start difference. First operand 73 states and 79 transitions. Second operand has 13 states, 11 states have (on average 1.5454545454545454) internal successors, (17), 11 states have internal predecessors, (17), 3 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-24 21:59:46,483 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 21:59:46,484 INFO L93 Difference]: Finished difference Result 84 states and 87 transitions. [2023-11-24 21:59:46,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-24 21:59:46,484 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 11 states have (on average 1.5454545454545454) internal successors, (17), 11 states have internal predecessors, (17), 3 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 23 [2023-11-24 21:59:46,485 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 21:59:46,486 INFO L225 Difference]: With dead ends: 84 [2023-11-24 21:59:46,486 INFO L226 Difference]: Without dead ends: 84 [2023-11-24 21:59:46,487 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=55, Invalid=251, Unknown=0, NotChecked=0, Total=306 [2023-11-24 21:59:46,487 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 69 mSDsluCounter, 186 mSDsCounter, 0 mSdLazyCounter, 434 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 71 SdHoareTripleChecker+Valid, 210 SdHoareTripleChecker+Invalid, 437 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 434 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2023-11-24 21:59:46,488 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [71 Valid, 210 Invalid, 437 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 434 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2023-11-24 21:59:46,489 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2023-11-24 21:59:46,491 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 72. [2023-11-24 21:59:46,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72 states, 41 states have (on average 1.5365853658536586) internal successors, (63), 59 states have internal predecessors, (63), 7 states have call successors, (7), 6 states have call predecessors, (7), 6 states have return successors, (7), 6 states have call predecessors, (7), 7 states have call successors, (7) [2023-11-24 21:59:46,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 77 transitions. [2023-11-24 21:59:46,493 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 77 transitions. Word has length 23 [2023-11-24 21:59:46,494 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 21:59:46,494 INFO L495 AbstractCegarLoop]: Abstraction has 72 states and 77 transitions. [2023-11-24 21:59:46,494 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 11 states have (on average 1.5454545454545454) internal successors, (17), 11 states have internal predecessors, (17), 3 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-24 21:59:46,494 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 77 transitions. [2023-11-24 21:59:46,495 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2023-11-24 21:59:46,495 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 21:59:46,496 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 21:59:46,506 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed35a62b-1f6a-4515-80c2-77e5756653fd/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2023-11-24 21:59:46,700 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed35a62b-1f6a-4515-80c2-77e5756653fd/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-24 21:59:46,700 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ldv_list_delErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ldv_list_addErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ldv_list_addErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, LDV_INIT_LIST_HEADErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 29 more)] === [2023-11-24 21:59:46,701 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:59:46,701 INFO L85 PathProgramCache]: Analyzing trace with hash -1641059162, now seen corresponding path program 1 times [2023-11-24 21:59:46,701 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-24 21:59:46,701 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [891006149] [2023-11-24 21:59:46,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:59:46,702 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 [2023-11-24 21:59:46,702 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed35a62b-1f6a-4515-80c2-77e5756653fd/bin/uautomizer-verify-NlZe1sFDwI/mathsat [2023-11-24 21:59:46,703 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed35a62b-1f6a-4515-80c2-77e5756653fd/bin/uautomizer-verify-NlZe1sFDwI/mathsat -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) [2023-11-24 21:59:46,709 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed35a62b-1f6a-4515-80c2-77e5756653fd/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2023-11-24 21:59:46,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:59:46,859 INFO L262 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 23 conjunts are in the unsatisfiable core [2023-11-24 21:59:46,862 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 21:59:46,867 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 [2023-11-24 21:59:47,083 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-11-24 21:59:47,232 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2023-11-24 21:59:47,396 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:59:47,396 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 21:59:47,397 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-24 21:59:47,397 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [891006149] [2023-11-24 21:59:47,397 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [891006149] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:59:47,397 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:59:47,397 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2023-11-24 21:59:47,400 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [342037602] [2023-11-24 21:59:47,401 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:59:47,403 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-11-24 21:59:47,403 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-24 21:59:47,403 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-11-24 21:59:47,404 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182 [2023-11-24 21:59:47,404 INFO L87 Difference]: Start difference. First operand 72 states and 77 transitions. Second operand has 14 states, 12 states have (on average 1.6666666666666667) internal successors, (20), 11 states have internal predecessors, (20), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-24 21:59:49,390 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 21:59:49,390 INFO L93 Difference]: Finished difference Result 89 states and 89 transitions. [2023-11-24 21:59:49,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-11-24 21:59:49,391 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 12 states have (on average 1.6666666666666667) internal successors, (20), 11 states have internal predecessors, (20), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 27 [2023-11-24 21:59:49,391 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 21:59:49,392 INFO L225 Difference]: With dead ends: 89 [2023-11-24 21:59:49,392 INFO L226 Difference]: Without dead ends: 89 [2023-11-24 21:59:49,393 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=94, Invalid=506, Unknown=0, NotChecked=0, Total=600 [2023-11-24 21:59:49,394 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 107 mSDsluCounter, 149 mSDsCounter, 0 mSdLazyCounter, 494 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 108 SdHoareTripleChecker+Valid, 171 SdHoareTripleChecker+Invalid, 514 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 494 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2023-11-24 21:59:49,395 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [108 Valid, 171 Invalid, 514 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 494 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2023-11-24 21:59:49,395 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2023-11-24 21:59:49,398 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 77. [2023-11-24 21:59:49,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 77 states, 46 states have (on average 1.5869565217391304) internal successors, (73), 63 states have internal predecessors, (73), 7 states have call successors, (7), 7 states have call predecessors, (7), 7 states have return successors, (7), 6 states have call predecessors, (7), 7 states have call successors, (7) [2023-11-24 21:59:49,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 87 transitions. [2023-11-24 21:59:49,400 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 87 transitions. Word has length 27 [2023-11-24 21:59:49,400 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 21:59:49,401 INFO L495 AbstractCegarLoop]: Abstraction has 77 states and 87 transitions. [2023-11-24 21:59:49,401 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 12 states have (on average 1.6666666666666667) internal successors, (20), 11 states have internal predecessors, (20), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-24 21:59:49,401 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 87 transitions. [2023-11-24 21:59:49,402 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2023-11-24 21:59:49,402 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 21:59:49,402 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 21:59:49,406 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed35a62b-1f6a-4515-80c2-77e5756653fd/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2023-11-24 21:59:49,606 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed35a62b-1f6a-4515-80c2-77e5756653fd/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-24 21:59:49,606 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ldv_list_delErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ldv_list_addErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ldv_list_addErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, LDV_INIT_LIST_HEADErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 29 more)] === [2023-11-24 21:59:49,606 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:59:49,607 INFO L85 PathProgramCache]: Analyzing trace with hash -1641059161, now seen corresponding path program 1 times [2023-11-24 21:59:49,607 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-24 21:59:49,607 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [922848831] [2023-11-24 21:59:49,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:59:49,607 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 [2023-11-24 21:59:49,608 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed35a62b-1f6a-4515-80c2-77e5756653fd/bin/uautomizer-verify-NlZe1sFDwI/mathsat [2023-11-24 21:59:49,609 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed35a62b-1f6a-4515-80c2-77e5756653fd/bin/uautomizer-verify-NlZe1sFDwI/mathsat -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) [2023-11-24 21:59:49,612 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed35a62b-1f6a-4515-80c2-77e5756653fd/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2023-11-24 21:59:49,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:59:49,733 INFO L262 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 37 conjunts are in the unsatisfiable core [2023-11-24 21:59:49,736 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 21:59:49,753 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 [2023-11-24 21:59:50,104 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-11-24 21:59:50,114 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-11-24 21:59:50,378 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2023-11-24 21:59:50,625 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:59:50,625 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 21:59:50,626 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-24 21:59:50,626 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [922848831] [2023-11-24 21:59:50,626 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [922848831] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:59:50,626 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:59:50,626 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2023-11-24 21:59:50,626 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [408220182] [2023-11-24 21:59:50,626 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:59:50,627 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-11-24 21:59:50,627 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-24 21:59:50,628 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-11-24 21:59:50,628 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=173, Unknown=0, NotChecked=0, Total=210 [2023-11-24 21:59:50,628 INFO L87 Difference]: Start difference. First operand 77 states and 87 transitions. Second operand has 15 states, 13 states have (on average 1.5384615384615385) internal successors, (20), 12 states have internal predecessors, (20), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-24 21:59:52,833 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 21:59:52,833 INFO L93 Difference]: Finished difference Result 83 states and 85 transitions. [2023-11-24 21:59:52,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-11-24 21:59:52,834 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 13 states have (on average 1.5384615384615385) internal successors, (20), 12 states have internal predecessors, (20), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 27 [2023-11-24 21:59:52,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 21:59:52,835 INFO L225 Difference]: With dead ends: 83 [2023-11-24 21:59:52,835 INFO L226 Difference]: Without dead ends: 83 [2023-11-24 21:59:52,836 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=79, Invalid=427, Unknown=0, NotChecked=0, Total=506 [2023-11-24 21:59:52,836 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 78 mSDsluCounter, 199 mSDsCounter, 0 mSdLazyCounter, 527 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 80 SdHoareTripleChecker+Valid, 221 SdHoareTripleChecker+Invalid, 530 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 527 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2023-11-24 21:59:52,837 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [80 Valid, 221 Invalid, 530 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 527 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2023-11-24 21:59:52,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2023-11-24 21:59:52,841 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 77. [2023-11-24 21:59:52,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 77 states, 46 states have (on average 1.5434782608695652) internal successors, (71), 63 states have internal predecessors, (71), 7 states have call successors, (7), 7 states have call predecessors, (7), 7 states have return successors, (7), 6 states have call predecessors, (7), 7 states have call successors, (7) [2023-11-24 21:59:52,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 85 transitions. [2023-11-24 21:59:52,842 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 85 transitions. Word has length 27 [2023-11-24 21:59:52,843 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 21:59:52,843 INFO L495 AbstractCegarLoop]: Abstraction has 77 states and 85 transitions. [2023-11-24 21:59:52,843 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 13 states have (on average 1.5384615384615385) internal successors, (20), 12 states have internal predecessors, (20), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-24 21:59:52,844 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 85 transitions. [2023-11-24 21:59:52,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2023-11-24 21:59:52,845 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 21:59:52,845 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 21:59:52,855 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed35a62b-1f6a-4515-80c2-77e5756653fd/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (20)] Forceful destruction successful, exit code 0 [2023-11-24 21:59:53,049 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed35a62b-1f6a-4515-80c2-77e5756653fd/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-24 21:59:53,049 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting LDV_INIT_LIST_HEADErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ldv_list_addErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ldv_list_addErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, LDV_INIT_LIST_HEADErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 29 more)] === [2023-11-24 21:59:53,050 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:59:53,050 INFO L85 PathProgramCache]: Analyzing trace with hash 664603292, now seen corresponding path program 1 times [2023-11-24 21:59:53,050 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-24 21:59:53,050 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1217470748] [2023-11-24 21:59:53,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:59:53,051 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 [2023-11-24 21:59:53,051 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed35a62b-1f6a-4515-80c2-77e5756653fd/bin/uautomizer-verify-NlZe1sFDwI/mathsat [2023-11-24 21:59:53,052 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed35a62b-1f6a-4515-80c2-77e5756653fd/bin/uautomizer-verify-NlZe1sFDwI/mathsat -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) [2023-11-24 21:59:53,054 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed35a62b-1f6a-4515-80c2-77e5756653fd/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2023-11-24 21:59:53,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:59:53,179 INFO L262 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 24 conjunts are in the unsatisfiable core [2023-11-24 21:59:53,182 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 21:59:53,257 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2023-11-24 21:59:53,259 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2023-11-24 21:59:53,527 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-11-24 21:59:53,677 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 8 [2023-11-24 21:59:53,711 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:59:53,712 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 21:59:53,712 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-24 21:59:53,712 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1217470748] [2023-11-24 21:59:53,712 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1217470748] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:59:53,712 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:59:53,713 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2023-11-24 21:59:53,713 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [200857652] [2023-11-24 21:59:53,713 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:59:53,714 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-11-24 21:59:53,715 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-24 21:59:53,716 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-11-24 21:59:53,716 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182 [2023-11-24 21:59:53,716 INFO L87 Difference]: Start difference. First operand 77 states and 85 transitions. Second operand has 14 states, 12 states have (on average 1.75) internal successors, (21), 11 states have internal predecessors, (21), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-24 21:59:55,007 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 21:59:55,007 INFO L93 Difference]: Finished difference Result 111 states and 113 transitions. [2023-11-24 21:59:55,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-11-24 21:59:55,008 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 12 states have (on average 1.75) internal successors, (21), 11 states have internal predecessors, (21), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 28 [2023-11-24 21:59:55,008 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 21:59:55,009 INFO L225 Difference]: With dead ends: 111 [2023-11-24 21:59:55,009 INFO L226 Difference]: Without dead ends: 111 [2023-11-24 21:59:55,009 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 74 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=122, Invalid=580, Unknown=0, NotChecked=0, Total=702 [2023-11-24 21:59:55,010 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 141 mSDsluCounter, 80 mSDsCounter, 0 mSdLazyCounter, 547 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 145 SdHoareTripleChecker+Valid, 92 SdHoareTripleChecker+Invalid, 569 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 547 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-11-24 21:59:55,011 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [145 Valid, 92 Invalid, 569 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 547 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-11-24 21:59:55,011 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2023-11-24 21:59:55,013 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 71. [2023-11-24 21:59:55,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71 states, 42 states have (on average 1.5238095238095237) internal successors, (64), 58 states have internal predecessors, (64), 6 states have call successors, (6), 6 states have call predecessors, (6), 6 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2023-11-24 21:59:55,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 76 transitions. [2023-11-24 21:59:55,015 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 76 transitions. Word has length 28 [2023-11-24 21:59:55,015 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 21:59:55,015 INFO L495 AbstractCegarLoop]: Abstraction has 71 states and 76 transitions. [2023-11-24 21:59:55,015 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 12 states have (on average 1.75) internal successors, (21), 11 states have internal predecessors, (21), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-24 21:59:55,015 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 76 transitions. [2023-11-24 21:59:55,016 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2023-11-24 21:59:55,016 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 21:59:55,017 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 21:59:55,020 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed35a62b-1f6a-4515-80c2-77e5756653fd/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (21)] Forceful destruction successful, exit code 0 [2023-11-24 21:59:55,220 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed35a62b-1f6a-4515-80c2-77e5756653fd/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-24 21:59:55,221 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ldv_list_delErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ldv_list_addErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ldv_list_addErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, LDV_INIT_LIST_HEADErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 29 more)] === [2023-11-24 21:59:55,221 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:59:55,221 INFO L85 PathProgramCache]: Analyzing trace with hash -804854360, now seen corresponding path program 1 times [2023-11-24 21:59:55,221 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-24 21:59:55,221 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [314961617] [2023-11-24 21:59:55,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:59:55,222 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 [2023-11-24 21:59:55,222 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed35a62b-1f6a-4515-80c2-77e5756653fd/bin/uautomizer-verify-NlZe1sFDwI/mathsat [2023-11-24 21:59:55,222 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed35a62b-1f6a-4515-80c2-77e5756653fd/bin/uautomizer-verify-NlZe1sFDwI/mathsat -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) [2023-11-24 21:59:55,224 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed35a62b-1f6a-4515-80c2-77e5756653fd/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2023-11-24 21:59:55,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:59:55,410 INFO L262 TraceCheckSpWp]: Trace formula consists of 181 conjuncts, 47 conjunts are in the unsatisfiable core [2023-11-24 21:59:55,414 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 21:59:55,520 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2023-11-24 21:59:55,521 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2023-11-24 21:59:55,594 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2023-11-24 21:59:55,930 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-11-24 21:59:56,075 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 11 [2023-11-24 21:59:56,103 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-11-24 21:59:56,153 INFO L349 Elim1Store]: treesize reduction 25, result has 47.9 percent of original size [2023-11-24 21:59:56,153 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 34 [2023-11-24 21:59:56,540 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2023-11-24 21:59:56,667 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 17 [2023-11-24 21:59:57,171 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:59:57,171 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 21:59:57,171 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-24 21:59:57,172 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [314961617] [2023-11-24 21:59:57,172 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [314961617] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:59:57,172 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:59:57,172 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2023-11-24 21:59:57,172 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [427516152] [2023-11-24 21:59:57,172 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:59:57,172 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-11-24 21:59:57,173 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-24 21:59:57,173 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-11-24 21:59:57,174 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=335, Unknown=0, NotChecked=0, Total=380 [2023-11-24 21:59:57,174 INFO L87 Difference]: Start difference. First operand 71 states and 76 transitions. Second operand has 20 states, 16 states have (on average 1.375) internal successors, (22), 15 states have internal predecessors, (22), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-24 22:00:00,682 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 22:00:00,683 INFO L93 Difference]: Finished difference Result 75 states and 75 transitions. [2023-11-24 22:00:00,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-11-24 22:00:00,683 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 16 states have (on average 1.375) internal successors, (22), 15 states have internal predecessors, (22), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 29 [2023-11-24 22:00:00,684 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 22:00:00,684 INFO L225 Difference]: With dead ends: 75 [2023-11-24 22:00:00,684 INFO L226 Difference]: Without dead ends: 75 [2023-11-24 22:00:00,685 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 145 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=142, Invalid=1048, Unknown=0, NotChecked=0, Total=1190 [2023-11-24 22:00:00,686 INFO L413 NwaCegarLoop]: 28 mSDtfsCounter, 60 mSDsluCounter, 251 mSDsCounter, 0 mSdLazyCounter, 663 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 60 SdHoareTripleChecker+Valid, 279 SdHoareTripleChecker+Invalid, 679 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 663 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2023-11-24 22:00:00,686 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [60 Valid, 279 Invalid, 679 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 663 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2023-11-24 22:00:00,687 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2023-11-24 22:00:00,690 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 71. [2023-11-24 22:00:00,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71 states, 42 states have (on average 1.5) internal successors, (63), 58 states have internal predecessors, (63), 6 states have call successors, (6), 6 states have call predecessors, (6), 6 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2023-11-24 22:00:00,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 75 transitions. [2023-11-24 22:00:00,691 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 75 transitions. Word has length 29 [2023-11-24 22:00:00,692 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 22:00:00,692 INFO L495 AbstractCegarLoop]: Abstraction has 71 states and 75 transitions. [2023-11-24 22:00:00,692 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 16 states have (on average 1.375) internal successors, (22), 15 states have internal predecessors, (22), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-24 22:00:00,692 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 75 transitions. [2023-11-24 22:00:00,693 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2023-11-24 22:00:00,693 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 22:00:00,694 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 22:00:00,697 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed35a62b-1f6a-4515-80c2-77e5756653fd/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (22)] Ended with exit code 0 [2023-11-24 22:00:00,894 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed35a62b-1f6a-4515-80c2-77e5756653fd/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-24 22:00:00,894 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ldv_list_delErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ldv_list_addErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ldv_list_addErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, LDV_INIT_LIST_HEADErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 29 more)] === [2023-11-24 22:00:00,895 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 22:00:00,895 INFO L85 PathProgramCache]: Analyzing trace with hash -804854359, now seen corresponding path program 1 times [2023-11-24 22:00:00,895 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-24 22:00:00,895 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [377768418] [2023-11-24 22:00:00,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 22:00:00,896 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 [2023-11-24 22:00:00,896 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed35a62b-1f6a-4515-80c2-77e5756653fd/bin/uautomizer-verify-NlZe1sFDwI/mathsat [2023-11-24 22:00:00,897 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed35a62b-1f6a-4515-80c2-77e5756653fd/bin/uautomizer-verify-NlZe1sFDwI/mathsat -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) [2023-11-24 22:00:00,899 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed35a62b-1f6a-4515-80c2-77e5756653fd/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (23)] Waiting until timeout for monitored process [2023-11-24 22:00:01,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 22:00:01,102 INFO L262 TraceCheckSpWp]: Trace formula consists of 181 conjuncts, 64 conjunts are in the unsatisfiable core [2023-11-24 22:00:01,107 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 22:00:01,332 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2023-11-24 22:00:01,333 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2023-11-24 22:00:02,189 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-11-24 22:00:02,211 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-11-24 22:00:02,399 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 11 [2023-11-24 22:00:02,477 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 11 [2023-11-24 22:00:02,591 INFO L349 Elim1Store]: treesize reduction 25, result has 47.9 percent of original size [2023-11-24 22:00:02,591 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 34 [2023-11-24 22:00:02,696 INFO L349 Elim1Store]: treesize reduction 29, result has 44.2 percent of original size [2023-11-24 22:00:02,697 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 27 [2023-11-24 22:00:03,955 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 22:00:03,955 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 22:00:03,955 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-24 22:00:03,955 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [377768418] [2023-11-24 22:00:03,955 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [377768418] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 22:00:03,955 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 22:00:03,956 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2023-11-24 22:00:03,956 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1455899451] [2023-11-24 22:00:03,956 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 22:00:03,956 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2023-11-24 22:00:03,956 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-24 22:00:03,957 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2023-11-24 22:00:03,957 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=365, Unknown=0, NotChecked=0, Total=420 [2023-11-24 22:00:03,958 INFO L87 Difference]: Start difference. First operand 71 states and 75 transitions. Second operand has 21 states, 17 states have (on average 1.2941176470588236) internal successors, (22), 16 states have internal predecessors, (22), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3)