./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/ldv-memsafety/memleaks_test6.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 9bd2c7ff Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a1a1979-c72e-4c62-a279-8ac6b042c3ab/bin/uautomizer-verify-uCwYo4JHxu/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a1a1979-c72e-4c62-a279-8ac6b042c3ab/bin/uautomizer-verify-uCwYo4JHxu/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a1a1979-c72e-4c62-a279-8ac6b042c3ab/bin/uautomizer-verify-uCwYo4JHxu/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a1a1979-c72e-4c62-a279-8ac6b042c3ab/bin/uautomizer-verify-uCwYo4JHxu/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/ldv-memsafety/memleaks_test6.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a1a1979-c72e-4c62-a279-8ac6b042c3ab/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a1a1979-c72e-4c62-a279-8ac6b042c3ab/bin/uautomizer-verify-uCwYo4JHxu --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 3ed2f79dd7eb34d7f468c81f6f234938dec012581166f8f07d8a0cec95998c6d --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 07:59:31,965 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 07:59:32,079 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a1a1979-c72e-4c62-a279-8ac6b042c3ab/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2023-11-19 07:59:32,093 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 07:59:32,094 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 07:59:32,131 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 07:59:32,133 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 07:59:32,133 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 07:59:32,134 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 07:59:32,139 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 07:59:32,141 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-19 07:59:32,141 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-19 07:59:32,142 INFO L153 SettingsManager]: * Use SBE=true [2023-11-19 07:59:32,144 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 07:59:32,144 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-19 07:59:32,145 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 07:59:32,145 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-19 07:59:32,146 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 07:59:32,146 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-19 07:59:32,147 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-19 07:59:32,147 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-19 07:59:32,148 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 07:59:32,148 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-19 07:59:32,149 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-19 07:59:32,149 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-19 07:59:32,149 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 07:59:32,150 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 07:59:32,151 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-19 07:59:32,151 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 07:59:32,152 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:59:32,153 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 07:59:32,153 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 07:59:32,154 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-19 07:59:32,154 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 07:59:32,154 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-19 07:59:32,154 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-19 07:59:32,155 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 07:59:32,155 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-19 07:59:32,155 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_0a1a1979-c72e-4c62-a279-8ac6b042c3ab/bin/uautomizer-verify-uCwYo4JHxu/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a1a1979-c72e-4c62-a279-8ac6b042c3ab/bin/uautomizer-verify-uCwYo4JHxu Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3ed2f79dd7eb34d7f468c81f6f234938dec012581166f8f07d8a0cec95998c6d [2023-11-19 07:59:32,422 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 07:59:32,443 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 07:59:32,446 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 07:59:32,447 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 07:59:32,448 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 07:59:32,449 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a1a1979-c72e-4c62-a279-8ac6b042c3ab/bin/uautomizer-verify-uCwYo4JHxu/../../sv-benchmarks/c/ldv-memsafety/memleaks_test6.i [2023-11-19 07:59:35,512 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 07:59:35,867 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 07:59:35,868 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a1a1979-c72e-4c62-a279-8ac6b042c3ab/sv-benchmarks/c/ldv-memsafety/memleaks_test6.i [2023-11-19 07:59:35,891 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a1a1979-c72e-4c62-a279-8ac6b042c3ab/bin/uautomizer-verify-uCwYo4JHxu/data/e5dda2b12/fda4341720be40838c820fe30c6ef247/FLAGdd0944c08 [2023-11-19 07:59:35,915 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a1a1979-c72e-4c62-a279-8ac6b042c3ab/bin/uautomizer-verify-uCwYo4JHxu/data/e5dda2b12/fda4341720be40838c820fe30c6ef247 [2023-11-19 07:59:35,920 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 07:59:35,923 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 07:59:35,926 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 07:59:35,927 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 07:59:35,932 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 07:59:35,933 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:59:35" (1/1) ... [2023-11-19 07:59:35,934 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@255ceb98 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:59:35, skipping insertion in model container [2023-11-19 07:59:35,934 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:59:35" (1/1) ... [2023-11-19 07:59:36,012 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 07:59:36,438 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:59:36,464 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) [2023-11-19 07:59:36,465 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@439b6d42 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:59:36, skipping insertion in model container [2023-11-19 07:59:36,465 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 07:59:36,465 INFO L186 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2023-11-19 07:59:36,468 INFO L158 Benchmark]: Toolchain (without parser) took 543.10ms. Allocated memory is still 163.6MB. Free memory was 122.8MB in the beginning and 108.5MB in the end (delta: 14.3MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2023-11-19 07:59:36,468 INFO L158 Benchmark]: CDTParser took 0.29ms. Allocated memory is still 113.2MB. Free memory is still 63.3MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-19 07:59:36,469 INFO L158 Benchmark]: CACSL2BoogieTranslator took 538.96ms. Allocated memory is still 163.6MB. Free memory was 122.5MB in the beginning and 108.5MB in the end (delta: 14.0MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2023-11-19 07:59:36,471 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29ms. Allocated memory is still 113.2MB. Free memory is still 63.3MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 538.96ms. Allocated memory is still 163.6MB. Free memory was 122.5MB in the beginning and 108.5MB in the end (delta: 14.0MB). 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-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a1a1979-c72e-4c62-a279-8ac6b042c3ab/bin/uautomizer-verify-uCwYo4JHxu/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a1a1979-c72e-4c62-a279-8ac6b042c3ab/bin/uautomizer-verify-uCwYo4JHxu/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a1a1979-c72e-4c62-a279-8ac6b042c3ab/bin/uautomizer-verify-uCwYo4JHxu/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a1a1979-c72e-4c62-a279-8ac6b042c3ab/bin/uautomizer-verify-uCwYo4JHxu/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/ldv-memsafety/memleaks_test6.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a1a1979-c72e-4c62-a279-8ac6b042c3ab/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a1a1979-c72e-4c62-a279-8ac6b042c3ab/bin/uautomizer-verify-uCwYo4JHxu --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 3ed2f79dd7eb34d7f468c81f6f234938dec012581166f8f07d8a0cec95998c6d --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 07:59:38,880 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 07:59:39,012 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a1a1979-c72e-4c62-a279-8ac6b042c3ab/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2023-11-19 07:59:39,023 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 07:59:39,026 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 07:59:39,078 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 07:59:39,079 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 07:59:39,080 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 07:59:39,081 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 07:59:39,085 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 07:59:39,086 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-19 07:59:39,087 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-19 07:59:39,087 INFO L153 SettingsManager]: * Use SBE=true [2023-11-19 07:59:39,089 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 07:59:39,090 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-19 07:59:39,090 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 07:59:39,090 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-19 07:59:39,091 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 07:59:39,091 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-19 07:59:39,092 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-19 07:59:39,092 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-19 07:59:39,093 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 07:59:39,093 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-19 07:59:39,094 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-11-19 07:59:39,094 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-11-19 07:59:39,094 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-19 07:59:39,095 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-19 07:59:39,095 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 07:59:39,096 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 07:59:39,097 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-19 07:59:39,098 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 07:59:39,098 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:59:39,099 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 07:59:39,099 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 07:59:39,099 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-11-19 07:59:39,100 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-11-19 07:59:39,100 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-19 07:59:39,100 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-19 07:59:39,101 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 07:59:39,102 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-11-19 07:59:39,102 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-19 07:59:39,102 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_0a1a1979-c72e-4c62-a279-8ac6b042c3ab/bin/uautomizer-verify-uCwYo4JHxu/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a1a1979-c72e-4c62-a279-8ac6b042c3ab/bin/uautomizer-verify-uCwYo4JHxu Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3ed2f79dd7eb34d7f468c81f6f234938dec012581166f8f07d8a0cec95998c6d [2023-11-19 07:59:39,521 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 07:59:39,554 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 07:59:39,560 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 07:59:39,561 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 07:59:39,562 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 07:59:39,563 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a1a1979-c72e-4c62-a279-8ac6b042c3ab/bin/uautomizer-verify-uCwYo4JHxu/../../sv-benchmarks/c/ldv-memsafety/memleaks_test6.i [2023-11-19 07:59:42,656 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 07:59:43,011 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 07:59:43,012 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a1a1979-c72e-4c62-a279-8ac6b042c3ab/sv-benchmarks/c/ldv-memsafety/memleaks_test6.i [2023-11-19 07:59:43,032 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a1a1979-c72e-4c62-a279-8ac6b042c3ab/bin/uautomizer-verify-uCwYo4JHxu/data/8c2592477/bb553db1874e4a71b1396627b99830a5/FLAG511b073e7 [2023-11-19 07:59:43,057 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a1a1979-c72e-4c62-a279-8ac6b042c3ab/bin/uautomizer-verify-uCwYo4JHxu/data/8c2592477/bb553db1874e4a71b1396627b99830a5 [2023-11-19 07:59:43,063 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 07:59:43,068 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 07:59:43,072 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 07:59:43,073 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 07:59:43,078 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 07:59:43,079 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:59:43" (1/1) ... [2023-11-19 07:59:43,080 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@67975c80 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:59:43, skipping insertion in model container [2023-11-19 07:59:43,080 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:59:43" (1/1) ... [2023-11-19 07:59:43,169 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 07:59:43,746 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:59:43,780 INFO L199 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2023-11-19 07:59:43,793 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 07:59:43,860 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:59:43,869 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 07:59:43,989 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:59:44,065 WARN L675 CHandler]: The function release is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 07:59:44,073 INFO L206 MainTranslator]: Completed translation [2023-11-19 07:59:44,074 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:59:44 WrapperNode [2023-11-19 07:59:44,075 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 07:59:44,076 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 07:59:44,076 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 07:59:44,076 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 07:59:44,084 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:59:44" (1/1) ... [2023-11-19 07:59:44,124 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:59:44" (1/1) ... [2023-11-19 07:59:44,159 INFO L138 Inliner]: procedures = 169, calls = 79, calls flagged for inlining = 25, calls inlined = 7, statements flattened = 62 [2023-11-19 07:59:44,159 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 07:59:44,161 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 07:59:44,161 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 07:59:44,161 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 07:59:44,171 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:59:44" (1/1) ... [2023-11-19 07:59:44,171 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:59:44" (1/1) ... [2023-11-19 07:59:44,190 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:59:44" (1/1) ... [2023-11-19 07:59:44,190 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:59:44" (1/1) ... [2023-11-19 07:59:44,197 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:59:44" (1/1) ... [2023-11-19 07:59:44,214 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:59:44" (1/1) ... [2023-11-19 07:59:44,216 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:59:44" (1/1) ... [2023-11-19 07:59:44,217 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:59:44" (1/1) ... [2023-11-19 07:59:44,220 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 07:59:44,225 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 07:59:44,225 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 07:59:44,225 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 07:59:44,226 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:59:44" (1/1) ... [2023-11-19 07:59:44,233 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:59:44,245 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a1a1979-c72e-4c62-a279-8ac6b042c3ab/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:59:44,258 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a1a1979-c72e-4c62-a279-8ac6b042c3ab/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 07:59:44,292 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a1a1979-c72e-4c62-a279-8ac6b042c3ab/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 07:59:44,299 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2023-11-19 07:59:44,300 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2023-11-19 07:59:44,300 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-19 07:59:44,300 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 07:59:44,300 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-19 07:59:44,300 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-19 07:59:44,300 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-19 07:59:44,301 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-11-19 07:59:44,301 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 07:59:44,301 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 07:59:44,430 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 07:59:44,432 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 07:59:44,627 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 07:59:44,635 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 07:59:44,635 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-19 07:59:44,639 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:59:44 BoogieIcfgContainer [2023-11-19 07:59:44,639 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 07:59:44,641 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 07:59:44,642 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 07:59:44,645 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 07:59:44,645 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 07:59:43" (1/3) ... [2023-11-19 07:59:44,646 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@311a6077 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:59:44, skipping insertion in model container [2023-11-19 07:59:44,646 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:59:44" (2/3) ... [2023-11-19 07:59:44,647 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@311a6077 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:59:44, skipping insertion in model container [2023-11-19 07:59:44,647 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:59:44" (3/3) ... [2023-11-19 07:59:44,648 INFO L112 eAbstractionObserver]: Analyzing ICFG memleaks_test6.i [2023-11-19 07:59:44,668 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 07:59:44,669 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 13 error locations. [2023-11-19 07:59:44,715 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 07:59:44,722 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;@2a398a78, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-19 07:59:44,722 INFO L358 AbstractCegarLoop]: Starting to check reachability of 13 error locations. [2023-11-19 07:59:44,726 INFO L276 IsEmpty]: Start isEmpty. Operand has 43 states, 27 states have (on average 1.6666666666666667) internal successors, (45), 40 states have internal predecessors, (45), 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) [2023-11-19 07:59:44,734 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2023-11-19 07:59:44,749 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:59:44,750 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:59:44,751 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 10 more)] === [2023-11-19 07:59:44,761 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:59:44,762 INFO L85 PathProgramCache]: Analyzing trace with hash 1405574468, now seen corresponding path program 1 times [2023-11-19 07:59:44,775 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-19 07:59:44,776 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1488037052] [2023-11-19 07:59:44,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:59:44,777 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 [2023-11-19 07:59:44,777 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a1a1979-c72e-4c62-a279-8ac6b042c3ab/bin/uautomizer-verify-uCwYo4JHxu/mathsat [2023-11-19 07:59:44,782 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a1a1979-c72e-4c62-a279-8ac6b042c3ab/bin/uautomizer-verify-uCwYo4JHxu/mathsat -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) [2023-11-19 07:59:44,819 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a1a1979-c72e-4c62-a279-8ac6b042c3ab/bin/uautomizer-verify-uCwYo4JHxu/mathsat -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 [2023-11-19 07:59:44,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:59:44,937 INFO L262 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-19 07:59:44,943 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:59:45,069 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:59:45,070 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:59:45,071 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-19 07:59:45,071 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1488037052] [2023-11-19 07:59:45,071 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1488037052] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:59:45,072 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:59:45,072 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-19 07:59:45,074 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1808387435] [2023-11-19 07:59:45,074 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:59:45,079 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-19 07:59:45,079 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-19 07:59:45,108 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-19 07:59:45,109 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-19 07:59:45,111 INFO L87 Difference]: Start difference. First operand has 43 states, 27 states have (on average 1.6666666666666667) internal successors, (45), 40 states have internal predecessors, (45), 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) Second operand has 5 states, 5 states have (on average 2.0) internal successors, (10), 4 states have internal predecessors, (10), 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) [2023-11-19 07:59:45,188 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:59:45,189 INFO L93 Difference]: Finished difference Result 61 states and 68 transitions. [2023-11-19 07:59:45,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-19 07:59:45,191 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.0) internal successors, (10), 4 states have internal predecessors, (10), 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 12 [2023-11-19 07:59:45,192 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:59:45,199 INFO L225 Difference]: With dead ends: 61 [2023-11-19 07:59:45,199 INFO L226 Difference]: Without dead ends: 59 [2023-11-19 07:59:45,201 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-19 07:59:45,204 INFO L413 NwaCegarLoop]: 41 mSDtfsCounter, 17 mSDsluCounter, 114 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 155 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 07:59:45,206 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 155 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 07:59:45,223 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2023-11-19 07:59:45,239 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 45. [2023-11-19 07:59:45,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45 states, 29 states have (on average 1.5862068965517242) internal successors, (46), 41 states have internal predecessors, (46), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-19 07:59:45,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 49 transitions. [2023-11-19 07:59:45,246 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 49 transitions. Word has length 12 [2023-11-19 07:59:45,246 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:59:45,246 INFO L495 AbstractCegarLoop]: Abstraction has 45 states and 49 transitions. [2023-11-19 07:59:45,247 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.0) internal successors, (10), 4 states have internal predecessors, (10), 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) [2023-11-19 07:59:45,247 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 49 transitions. [2023-11-19 07:59:45,249 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2023-11-19 07:59:45,249 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:59:45,249 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:59:45,258 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a1a1979-c72e-4c62-a279-8ac6b042c3ab/bin/uautomizer-verify-uCwYo4JHxu/mathsat -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 [2023-11-19 07:59:45,452 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a1a1979-c72e-4c62-a279-8ac6b042c3ab/bin/uautomizer-verify-uCwYo4JHxu/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-19 07:59:45,453 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 10 more)] === [2023-11-19 07:59:45,454 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:59:45,455 INFO L85 PathProgramCache]: Analyzing trace with hash 1405608821, now seen corresponding path program 1 times [2023-11-19 07:59:45,457 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-19 07:59:45,458 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [919293503] [2023-11-19 07:59:45,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:59:45,459 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 [2023-11-19 07:59:45,459 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a1a1979-c72e-4c62-a279-8ac6b042c3ab/bin/uautomizer-verify-uCwYo4JHxu/mathsat [2023-11-19 07:59:45,461 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a1a1979-c72e-4c62-a279-8ac6b042c3ab/bin/uautomizer-verify-uCwYo4JHxu/mathsat -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) [2023-11-19 07:59:45,465 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a1a1979-c72e-4c62-a279-8ac6b042c3ab/bin/uautomizer-verify-uCwYo4JHxu/mathsat -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 [2023-11-19 07:59:45,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:59:45,544 INFO L262 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-19 07:59:45,546 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:59:45,593 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:59:45,594 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:59:45,594 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-19 07:59:45,595 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [919293503] [2023-11-19 07:59:45,595 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [919293503] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:59:45,595 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:59:45,595 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 07:59:45,596 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1513695449] [2023-11-19 07:59:45,596 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:59:45,597 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-19 07:59:45,598 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-19 07:59:45,599 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-19 07:59:45,616 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-19 07:59:45,616 INFO L87 Difference]: Start difference. First operand 45 states and 49 transitions. Second operand has 5 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 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) [2023-11-19 07:59:45,651 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:59:45,651 INFO L93 Difference]: Finished difference Result 44 states and 48 transitions. [2023-11-19 07:59:45,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-19 07:59:45,653 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 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 12 [2023-11-19 07:59:45,660 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:59:45,661 INFO L225 Difference]: With dead ends: 44 [2023-11-19 07:59:45,661 INFO L226 Difference]: Without dead ends: 44 [2023-11-19 07:59:45,661 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-19 07:59:45,663 INFO L413 NwaCegarLoop]: 39 mSDtfsCounter, 14 mSDsluCounter, 96 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 135 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 07:59:45,664 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 135 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 07:59:45,665 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2023-11-19 07:59:45,668 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 44. [2023-11-19 07:59:45,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44 states, 29 states have (on average 1.5517241379310345) internal successors, (45), 40 states have internal predecessors, (45), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-19 07:59:45,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 48 transitions. [2023-11-19 07:59:45,670 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 48 transitions. Word has length 12 [2023-11-19 07:59:45,671 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:59:45,671 INFO L495 AbstractCegarLoop]: Abstraction has 44 states and 48 transitions. [2023-11-19 07:59:45,671 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 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) [2023-11-19 07:59:45,671 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 48 transitions. [2023-11-19 07:59:45,672 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2023-11-19 07:59:45,672 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:59:45,672 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:59:45,677 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a1a1979-c72e-4c62-a279-8ac6b042c3ab/bin/uautomizer-verify-uCwYo4JHxu/mathsat -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 [2023-11-19 07:59:45,874 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a1a1979-c72e-4c62-a279-8ac6b042c3ab/bin/uautomizer-verify-uCwYo4JHxu/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-19 07:59:45,875 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 10 more)] === [2023-11-19 07:59:45,875 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:59:45,876 INFO L85 PathProgramCache]: Analyzing trace with hash -1146582493, now seen corresponding path program 1 times [2023-11-19 07:59:45,876 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-19 07:59:45,876 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [799917267] [2023-11-19 07:59:45,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:59:45,877 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 [2023-11-19 07:59:45,877 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a1a1979-c72e-4c62-a279-8ac6b042c3ab/bin/uautomizer-verify-uCwYo4JHxu/mathsat [2023-11-19 07:59:45,880 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a1a1979-c72e-4c62-a279-8ac6b042c3ab/bin/uautomizer-verify-uCwYo4JHxu/mathsat -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) [2023-11-19 07:59:45,910 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a1a1979-c72e-4c62-a279-8ac6b042c3ab/bin/uautomizer-verify-uCwYo4JHxu/mathsat -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 [2023-11-19 07:59:45,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:59:45,967 INFO L262 TraceCheckSpWp]: Trace formula consists of 45 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-19 07:59:45,969 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:59:46,135 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:59:46,135 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:59:46,136 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-19 07:59:46,136 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [799917267] [2023-11-19 07:59:46,136 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [799917267] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:59:46,136 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:59:46,137 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 07:59:46,137 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2011889467] [2023-11-19 07:59:46,137 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:59:46,137 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 07:59:46,138 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-19 07:59:46,138 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 07:59:46,138 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-19 07:59:46,139 INFO L87 Difference]: Start difference. First operand 44 states and 48 transitions. Second operand has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 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) [2023-11-19 07:59:46,245 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:59:46,245 INFO L93 Difference]: Finished difference Result 60 states and 64 transitions. [2023-11-19 07:59:46,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 07:59:46,246 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 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 12 [2023-11-19 07:59:46,246 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:59:46,247 INFO L225 Difference]: With dead ends: 60 [2023-11-19 07:59:46,247 INFO L226 Difference]: Without dead ends: 60 [2023-11-19 07:59:46,247 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-19 07:59:46,249 INFO L413 NwaCegarLoop]: 31 mSDtfsCounter, 33 mSDsluCounter, 33 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 64 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 07:59:46,249 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 64 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 07:59:46,251 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2023-11-19 07:59:46,254 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 47. [2023-11-19 07:59:46,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47 states, 32 states have (on average 1.5625) internal successors, (50), 43 states have internal predecessors, (50), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-19 07:59:46,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 53 transitions. [2023-11-19 07:59:46,256 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 53 transitions. Word has length 12 [2023-11-19 07:59:46,256 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:59:46,257 INFO L495 AbstractCegarLoop]: Abstraction has 47 states and 53 transitions. [2023-11-19 07:59:46,257 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 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) [2023-11-19 07:59:46,257 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 53 transitions. [2023-11-19 07:59:46,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2023-11-19 07:59:46,258 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:59:46,258 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:59:46,261 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a1a1979-c72e-4c62-a279-8ac6b042c3ab/bin/uautomizer-verify-uCwYo4JHxu/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2023-11-19 07:59:46,460 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a1a1979-c72e-4c62-a279-8ac6b042c3ab/bin/uautomizer-verify-uCwYo4JHxu/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-19 07:59:46,460 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 10 more)] === [2023-11-19 07:59:46,461 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:59:46,461 INFO L85 PathProgramCache]: Analyzing trace with hash -1146582492, now seen corresponding path program 1 times [2023-11-19 07:59:46,462 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-19 07:59:46,462 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2130234836] [2023-11-19 07:59:46,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:59:46,462 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 [2023-11-19 07:59:46,462 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a1a1979-c72e-4c62-a279-8ac6b042c3ab/bin/uautomizer-verify-uCwYo4JHxu/mathsat [2023-11-19 07:59:46,463 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a1a1979-c72e-4c62-a279-8ac6b042c3ab/bin/uautomizer-verify-uCwYo4JHxu/mathsat -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) [2023-11-19 07:59:46,469 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a1a1979-c72e-4c62-a279-8ac6b042c3ab/bin/uautomizer-verify-uCwYo4JHxu/mathsat -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 [2023-11-19 07:59:46,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:59:46,521 INFO L262 TraceCheckSpWp]: Trace formula consists of 45 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-19 07:59:46,523 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:59:46,676 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:59:46,676 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:59:46,677 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-19 07:59:46,677 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2130234836] [2023-11-19 07:59:46,677 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2130234836] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:59:46,677 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:59:46,677 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 07:59:46,678 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1838704791] [2023-11-19 07:59:46,678 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:59:46,678 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 07:59:46,679 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-19 07:59:46,679 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 07:59:46,680 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-19 07:59:46,680 INFO L87 Difference]: Start difference. First operand 47 states and 53 transitions. Second operand has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 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) [2023-11-19 07:59:46,807 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:59:46,807 INFO L93 Difference]: Finished difference Result 80 states and 89 transitions. [2023-11-19 07:59:46,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 07:59:46,808 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 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 12 [2023-11-19 07:59:46,809 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:59:46,810 INFO L225 Difference]: With dead ends: 80 [2023-11-19 07:59:46,810 INFO L226 Difference]: Without dead ends: 80 [2023-11-19 07:59:46,810 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-19 07:59:46,811 INFO L413 NwaCegarLoop]: 54 mSDtfsCounter, 35 mSDsluCounter, 72 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 126 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 07:59:46,812 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 126 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 07:59:46,813 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2023-11-19 07:59:46,820 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 67. [2023-11-19 07:59:46,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67 states, 52 states have (on average 1.6153846153846154) internal successors, (84), 63 states have internal predecessors, (84), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-19 07:59:46,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 87 transitions. [2023-11-19 07:59:46,822 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 87 transitions. Word has length 12 [2023-11-19 07:59:46,822 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:59:46,823 INFO L495 AbstractCegarLoop]: Abstraction has 67 states and 87 transitions. [2023-11-19 07:59:46,823 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 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) [2023-11-19 07:59:46,823 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 87 transitions. [2023-11-19 07:59:46,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2023-11-19 07:59:46,824 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:59:46,824 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:59:46,833 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a1a1979-c72e-4c62-a279-8ac6b042c3ab/bin/uautomizer-verify-uCwYo4JHxu/mathsat -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 [2023-11-19 07:59:47,026 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a1a1979-c72e-4c62-a279-8ac6b042c3ab/bin/uautomizer-verify-uCwYo4JHxu/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-19 07:59:47,027 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 10 more)] === [2023-11-19 07:59:47,028 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:59:47,028 INFO L85 PathProgramCache]: Analyzing trace with hash -1146582909, now seen corresponding path program 1 times [2023-11-19 07:59:47,028 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-19 07:59:47,028 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [91668947] [2023-11-19 07:59:47,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:59:47,029 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 [2023-11-19 07:59:47,029 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a1a1979-c72e-4c62-a279-8ac6b042c3ab/bin/uautomizer-verify-uCwYo4JHxu/mathsat [2023-11-19 07:59:47,030 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a1a1979-c72e-4c62-a279-8ac6b042c3ab/bin/uautomizer-verify-uCwYo4JHxu/mathsat -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) [2023-11-19 07:59:47,063 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a1a1979-c72e-4c62-a279-8ac6b042c3ab/bin/uautomizer-verify-uCwYo4JHxu/mathsat -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 [2023-11-19 07:59:47,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:59:47,092 INFO L262 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-19 07:59:47,094 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:59:47,131 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:59:47,131 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:59:47,131 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-19 07:59:47,132 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [91668947] [2023-11-19 07:59:47,132 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [91668947] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:59:47,132 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:59:47,132 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-19 07:59:47,133 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [508702880] [2023-11-19 07:59:47,133 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:59:47,134 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-19 07:59:47,134 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-19 07:59:47,135 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-19 07:59:47,135 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-19 07:59:47,135 INFO L87 Difference]: Start difference. First operand 67 states and 87 transitions. Second operand has 5 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 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) [2023-11-19 07:59:47,189 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:59:47,189 INFO L93 Difference]: Finished difference Result 73 states and 92 transitions. [2023-11-19 07:59:47,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-19 07:59:47,190 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 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 12 [2023-11-19 07:59:47,191 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:59:47,193 INFO L225 Difference]: With dead ends: 73 [2023-11-19 07:59:47,193 INFO L226 Difference]: Without dead ends: 73 [2023-11-19 07:59:47,194 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-11-19 07:59:47,199 INFO L413 NwaCegarLoop]: 41 mSDtfsCounter, 9 mSDsluCounter, 107 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 148 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 07:59:47,203 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 148 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 07:59:47,204 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2023-11-19 07:59:47,210 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 69. [2023-11-19 07:59:47,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69 states, 54 states have (on average 1.5925925925925926) internal successors, (86), 65 states have internal predecessors, (86), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-19 07:59:47,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 89 transitions. [2023-11-19 07:59:47,212 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 89 transitions. Word has length 12 [2023-11-19 07:59:47,212 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:59:47,212 INFO L495 AbstractCegarLoop]: Abstraction has 69 states and 89 transitions. [2023-11-19 07:59:47,213 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 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) [2023-11-19 07:59:47,213 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 89 transitions. [2023-11-19 07:59:47,213 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2023-11-19 07:59:47,214 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:59:47,214 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:59:47,225 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a1a1979-c72e-4c62-a279-8ac6b042c3ab/bin/uautomizer-verify-uCwYo4JHxu/mathsat -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 [2023-11-19 07:59:47,416 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a1a1979-c72e-4c62-a279-8ac6b042c3ab/bin/uautomizer-verify-uCwYo4JHxu/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-19 07:59:47,416 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 10 more)] === [2023-11-19 07:59:47,417 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:59:47,417 INFO L85 PathProgramCache]: Analyzing trace with hash 624200559, now seen corresponding path program 1 times [2023-11-19 07:59:47,417 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-19 07:59:47,418 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [93928819] [2023-11-19 07:59:47,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:59:47,418 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 [2023-11-19 07:59:47,418 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a1a1979-c72e-4c62-a279-8ac6b042c3ab/bin/uautomizer-verify-uCwYo4JHxu/mathsat [2023-11-19 07:59:47,419 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a1a1979-c72e-4c62-a279-8ac6b042c3ab/bin/uautomizer-verify-uCwYo4JHxu/mathsat -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) [2023-11-19 07:59:47,420 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a1a1979-c72e-4c62-a279-8ac6b042c3ab/bin/uautomizer-verify-uCwYo4JHxu/mathsat -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 [2023-11-19 07:59:47,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:59:47,479 INFO L262 TraceCheckSpWp]: Trace formula consists of 50 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-19 07:59:47,481 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:59:47,601 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:59:47,602 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:59:47,602 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-19 07:59:47,602 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [93928819] [2023-11-19 07:59:47,602 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [93928819] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:59:47,602 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:59:47,602 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 07:59:47,603 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [193523845] [2023-11-19 07:59:47,603 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:59:47,603 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-19 07:59:47,603 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-19 07:59:47,604 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-19 07:59:47,604 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-11-19 07:59:47,604 INFO L87 Difference]: Start difference. First operand 69 states and 89 transitions. Second operand has 6 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 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) [2023-11-19 07:59:47,716 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:59:47,717 INFO L93 Difference]: Finished difference Result 72 states and 88 transitions. [2023-11-19 07:59:47,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-19 07:59:47,719 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 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 13 [2023-11-19 07:59:47,719 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:59:47,720 INFO L225 Difference]: With dead ends: 72 [2023-11-19 07:59:47,720 INFO L226 Difference]: Without dead ends: 72 [2023-11-19 07:59:47,721 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-11-19 07:59:47,722 INFO L413 NwaCegarLoop]: 35 mSDtfsCounter, 61 mSDsluCounter, 88 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 123 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 07:59:47,722 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [61 Valid, 123 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 07:59:47,723 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2023-11-19 07:59:47,731 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 69. [2023-11-19 07:59:47,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69 states, 54 states have (on average 1.5740740740740742) internal successors, (85), 65 states have internal predecessors, (85), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-19 07:59:47,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 88 transitions. [2023-11-19 07:59:47,741 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 88 transitions. Word has length 13 [2023-11-19 07:59:47,741 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:59:47,742 INFO L495 AbstractCegarLoop]: Abstraction has 69 states and 88 transitions. [2023-11-19 07:59:47,742 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 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) [2023-11-19 07:59:47,742 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 88 transitions. [2023-11-19 07:59:47,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2023-11-19 07:59:47,743 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:59:47,743 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:59:47,753 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a1a1979-c72e-4c62-a279-8ac6b042c3ab/bin/uautomizer-verify-uCwYo4JHxu/mathsat -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 [2023-11-19 07:59:47,944 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a1a1979-c72e-4c62-a279-8ac6b042c3ab/bin/uautomizer-verify-uCwYo4JHxu/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-19 07:59:47,944 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 10 more)] === [2023-11-19 07:59:47,945 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:59:47,945 INFO L85 PathProgramCache]: Analyzing trace with hash -1183253904, now seen corresponding path program 1 times [2023-11-19 07:59:47,945 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-19 07:59:47,945 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1936175022] [2023-11-19 07:59:47,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:59:47,946 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 [2023-11-19 07:59:47,946 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a1a1979-c72e-4c62-a279-8ac6b042c3ab/bin/uautomizer-verify-uCwYo4JHxu/mathsat [2023-11-19 07:59:47,947 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a1a1979-c72e-4c62-a279-8ac6b042c3ab/bin/uautomizer-verify-uCwYo4JHxu/mathsat -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) [2023-11-19 07:59:47,948 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a1a1979-c72e-4c62-a279-8ac6b042c3ab/bin/uautomizer-verify-uCwYo4JHxu/mathsat -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 [2023-11-19 07:59:47,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:59:47,995 INFO L262 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-19 07:59:47,997 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:59:48,054 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:59:48,054 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:59:48,055 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-19 07:59:48,055 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1936175022] [2023-11-19 07:59:48,055 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1936175022] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:59:48,055 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:59:48,056 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-19 07:59:48,056 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1009044940] [2023-11-19 07:59:48,056 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:59:48,060 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-19 07:59:48,061 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-19 07:59:48,061 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-19 07:59:48,062 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-19 07:59:48,063 INFO L87 Difference]: Start difference. First operand 69 states and 88 transitions. Second operand has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 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) [2023-11-19 07:59:48,097 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:59:48,098 INFO L93 Difference]: Finished difference Result 49 states and 54 transitions. [2023-11-19 07:59:48,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-19 07:59:48,099 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), 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 13 [2023-11-19 07:59:48,099 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:59:48,101 INFO L225 Difference]: With dead ends: 49 [2023-11-19 07:59:48,102 INFO L226 Difference]: Without dead ends: 49 [2023-11-19 07:59:48,102 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-19 07:59:48,103 INFO L413 NwaCegarLoop]: 44 mSDtfsCounter, 1 mSDsluCounter, 116 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 160 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 07:59:48,104 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 160 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 07:59:48,106 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2023-11-19 07:59:48,120 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 49. [2023-11-19 07:59:48,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49 states, 35 states have (on average 1.457142857142857) internal successors, (51), 45 states have internal predecessors, (51), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-19 07:59:48,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 54 transitions. [2023-11-19 07:59:48,121 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 54 transitions. Word has length 13 [2023-11-19 07:59:48,122 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:59:48,122 INFO L495 AbstractCegarLoop]: Abstraction has 49 states and 54 transitions. [2023-11-19 07:59:48,122 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), 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) [2023-11-19 07:59:48,123 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 54 transitions. [2023-11-19 07:59:48,125 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2023-11-19 07:59:48,126 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:59:48,126 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:59:48,136 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a1a1979-c72e-4c62-a279-8ac6b042c3ab/bin/uautomizer-verify-uCwYo4JHxu/mathsat -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)] Forceful destruction successful, exit code 0 [2023-11-19 07:59:48,328 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a1a1979-c72e-4c62-a279-8ac6b042c3ab/bin/uautomizer-verify-uCwYo4JHxu/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-19 07:59:48,329 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 10 more)] === [2023-11-19 07:59:48,329 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:59:48,329 INFO L85 PathProgramCache]: Analyzing trace with hash -2124619081, now seen corresponding path program 1 times [2023-11-19 07:59:48,329 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-19 07:59:48,330 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [279249556] [2023-11-19 07:59:48,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:59:48,330 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 [2023-11-19 07:59:48,330 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a1a1979-c72e-4c62-a279-8ac6b042c3ab/bin/uautomizer-verify-uCwYo4JHxu/mathsat [2023-11-19 07:59:48,331 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a1a1979-c72e-4c62-a279-8ac6b042c3ab/bin/uautomizer-verify-uCwYo4JHxu/mathsat -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) [2023-11-19 07:59:48,359 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a1a1979-c72e-4c62-a279-8ac6b042c3ab/bin/uautomizer-verify-uCwYo4JHxu/mathsat -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 [2023-11-19 07:59:48,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:59:48,394 INFO L262 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-19 07:59:48,401 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:59:48,428 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 [2023-11-19 07:59:48,477 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:59:48,477 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:59:48,477 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-19 07:59:48,477 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [279249556] [2023-11-19 07:59:48,478 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [279249556] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:59:48,479 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:59:48,479 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 07:59:48,479 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1305120970] [2023-11-19 07:59:48,484 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:59:48,486 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-19 07:59:48,487 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-19 07:59:48,487 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-19 07:59:48,488 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-19 07:59:48,488 INFO L87 Difference]: Start difference. First operand 49 states and 54 transitions. Second operand has 5 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 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) [2023-11-19 07:59:48,590 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:59:48,591 INFO L93 Difference]: Finished difference Result 48 states and 53 transitions. [2023-11-19 07:59:48,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-19 07:59:48,591 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 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 14 [2023-11-19 07:59:48,592 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:59:48,592 INFO L225 Difference]: With dead ends: 48 [2023-11-19 07:59:48,592 INFO L226 Difference]: Without dead ends: 48 [2023-11-19 07:59:48,592 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-19 07:59:48,593 INFO L413 NwaCegarLoop]: 37 mSDtfsCounter, 8 mSDsluCounter, 64 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 101 SdHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 57 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 07:59:48,594 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 101 Invalid, 57 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 57 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 07:59:48,594 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2023-11-19 07:59:48,596 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 48. [2023-11-19 07:59:48,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48 states, 35 states have (on average 1.4285714285714286) internal successors, (50), 44 states have internal predecessors, (50), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-19 07:59:48,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 53 transitions. [2023-11-19 07:59:48,597 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 53 transitions. Word has length 14 [2023-11-19 07:59:48,597 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:59:48,597 INFO L495 AbstractCegarLoop]: Abstraction has 48 states and 53 transitions. [2023-11-19 07:59:48,597 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 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) [2023-11-19 07:59:48,598 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 53 transitions. [2023-11-19 07:59:48,598 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2023-11-19 07:59:48,598 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:59:48,598 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:59:48,606 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a1a1979-c72e-4c62-a279-8ac6b042c3ab/bin/uautomizer-verify-uCwYo4JHxu/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Ended with exit code 0 [2023-11-19 07:59:48,799 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a1a1979-c72e-4c62-a279-8ac6b042c3ab/bin/uautomizer-verify-uCwYo4JHxu/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-19 07:59:48,799 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 10 more)] === [2023-11-19 07:59:48,799 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:59:48,799 INFO L85 PathProgramCache]: Analyzing trace with hash -2124571317, now seen corresponding path program 1 times [2023-11-19 07:59:48,800 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-19 07:59:48,800 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1151320089] [2023-11-19 07:59:48,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:59:48,800 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 [2023-11-19 07:59:48,800 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a1a1979-c72e-4c62-a279-8ac6b042c3ab/bin/uautomizer-verify-uCwYo4JHxu/mathsat [2023-11-19 07:59:48,802 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a1a1979-c72e-4c62-a279-8ac6b042c3ab/bin/uautomizer-verify-uCwYo4JHxu/mathsat -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) [2023-11-19 07:59:48,837 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a1a1979-c72e-4c62-a279-8ac6b042c3ab/bin/uautomizer-verify-uCwYo4JHxu/mathsat -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 [2023-11-19 07:59:48,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:59:48,879 INFO L262 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 15 conjunts are in the unsatisfiable core [2023-11-19 07:59:48,883 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:59:49,017 WARN L876 $PredicateComparison]: unable to prove that (exists ((|ldv_malloc_#res.base| (_ BitVec 32))) (and (= (_ bv0 1) (select |c_old(#valid)| |ldv_malloc_#res.base|)) (= (store |c_old(#length)| |ldv_malloc_#res.base| (select |c_#length| |ldv_malloc_#res.base|)) |c_#length|))) is different from true [2023-11-19 07:59:49,086 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:59:49,087 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 [2023-11-19 07:59:49,190 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:59:49,190 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:59:49,191 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-19 07:59:49,191 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1151320089] [2023-11-19 07:59:49,191 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1151320089] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:59:49,191 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:59:49,191 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-19 07:59:49,191 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [351532951] [2023-11-19 07:59:49,192 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:59:49,192 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-19 07:59:49,192 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-19 07:59:49,193 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-19 07:59:49,193 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=21, Unknown=1, NotChecked=8, Total=42 [2023-11-19 07:59:49,193 INFO L87 Difference]: Start difference. First operand 48 states and 53 transitions. Second operand has 7 states, 5 states have (on average 2.4) internal successors, (12), 6 states have internal predecessors, (12), 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) [2023-11-19 07:59:49,445 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:59:49,445 INFO L93 Difference]: Finished difference Result 58 states and 61 transitions. [2023-11-19 07:59:49,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-19 07:59:49,445 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 2.4) internal successors, (12), 6 states have internal predecessors, (12), 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 14 [2023-11-19 07:59:49,446 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:59:49,446 INFO L225 Difference]: With dead ends: 58 [2023-11-19 07:59:49,446 INFO L226 Difference]: Without dead ends: 58 [2023-11-19 07:59:49,447 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=24, Invalid=51, Unknown=1, NotChecked=14, Total=90 [2023-11-19 07:59:49,447 INFO L413 NwaCegarLoop]: 38 mSDtfsCounter, 48 mSDsluCounter, 70 mSDsCounter, 0 mSdLazyCounter, 83 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 108 SdHoareTripleChecker+Invalid, 146 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 83 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 55 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 07:59:49,448 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [48 Valid, 108 Invalid, 146 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 83 Invalid, 0 Unknown, 55 Unchecked, 0.1s Time] [2023-11-19 07:59:49,448 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2023-11-19 07:59:49,450 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 45. [2023-11-19 07:59:49,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45 states, 34 states have (on average 1.3529411764705883) internal successors, (46), 41 states have internal predecessors, (46), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-19 07:59:49,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 49 transitions. [2023-11-19 07:59:49,451 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 49 transitions. Word has length 14 [2023-11-19 07:59:49,452 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:59:49,452 INFO L495 AbstractCegarLoop]: Abstraction has 45 states and 49 transitions. [2023-11-19 07:59:49,452 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 2.4) internal successors, (12), 6 states have internal predecessors, (12), 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) [2023-11-19 07:59:49,452 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 49 transitions. [2023-11-19 07:59:49,452 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2023-11-19 07:59:49,453 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:59:49,453 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:59:49,460 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a1a1979-c72e-4c62-a279-8ac6b042c3ab/bin/uautomizer-verify-uCwYo4JHxu/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2023-11-19 07:59:49,653 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a1a1979-c72e-4c62-a279-8ac6b042c3ab/bin/uautomizer-verify-uCwYo4JHxu/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-19 07:59:49,653 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 10 more)] === [2023-11-19 07:59:49,654 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:59:49,654 INFO L85 PathProgramCache]: Analyzing trace with hash 1940820388, now seen corresponding path program 1 times [2023-11-19 07:59:49,654 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-19 07:59:49,654 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1016027084] [2023-11-19 07:59:49,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:59:49,654 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 [2023-11-19 07:59:49,654 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a1a1979-c72e-4c62-a279-8ac6b042c3ab/bin/uautomizer-verify-uCwYo4JHxu/mathsat [2023-11-19 07:59:49,655 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a1a1979-c72e-4c62-a279-8ac6b042c3ab/bin/uautomizer-verify-uCwYo4JHxu/mathsat -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) [2023-11-19 07:59:49,661 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a1a1979-c72e-4c62-a279-8ac6b042c3ab/bin/uautomizer-verify-uCwYo4JHxu/mathsat -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 [2023-11-19 07:59:49,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:59:49,716 INFO L262 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-19 07:59:49,717 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:59:49,752 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:59:49,753 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:59:49,753 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-19 07:59:49,753 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1016027084] [2023-11-19 07:59:49,753 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1016027084] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:59:49,753 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:59:49,754 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 07:59:49,754 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1875256309] [2023-11-19 07:59:49,754 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:59:49,754 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 07:59:49,754 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-19 07:59:49,755 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 07:59:49,755 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-19 07:59:49,755 INFO L87 Difference]: Start difference. First operand 45 states and 49 transitions. Second operand has 4 states, 3 states have (on average 4.0) internal successors, (12), 4 states have internal predecessors, (12), 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) [2023-11-19 07:59:49,821 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:59:49,821 INFO L93 Difference]: Finished difference Result 48 states and 51 transitions. [2023-11-19 07:59:49,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 07:59:49,822 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.0) internal successors, (12), 4 states have internal predecessors, (12), 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 14 [2023-11-19 07:59:49,822 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:59:49,823 INFO L225 Difference]: With dead ends: 48 [2023-11-19 07:59:49,823 INFO L226 Difference]: Without dead ends: 39 [2023-11-19 07:59:49,823 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-19 07:59:49,824 INFO L413 NwaCegarLoop]: 40 mSDtfsCounter, 0 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 92 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 07:59:49,824 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 92 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 07:59:49,825 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2023-11-19 07:59:49,827 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2023-11-19 07:59:49,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 29 states have (on average 1.3793103448275863) internal successors, (40), 36 states have internal predecessors, (40), 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) [2023-11-19 07:59:49,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 42 transitions. [2023-11-19 07:59:49,828 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 42 transitions. Word has length 14 [2023-11-19 07:59:49,828 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:59:49,828 INFO L495 AbstractCegarLoop]: Abstraction has 39 states and 42 transitions. [2023-11-19 07:59:49,829 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.0) internal successors, (12), 4 states have internal predecessors, (12), 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) [2023-11-19 07:59:49,829 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 42 transitions. [2023-11-19 07:59:49,829 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2023-11-19 07:59:49,829 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:59:49,829 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:59:49,838 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a1a1979-c72e-4c62-a279-8ac6b042c3ab/bin/uautomizer-verify-uCwYo4JHxu/mathsat -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 [2023-11-19 07:59:50,032 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a1a1979-c72e-4c62-a279-8ac6b042c3ab/bin/uautomizer-verify-uCwYo4JHxu/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-19 07:59:50,032 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 10 more)] === [2023-11-19 07:59:50,033 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:59:50,033 INFO L85 PathProgramCache]: Analyzing trace with hash 406071093, now seen corresponding path program 1 times [2023-11-19 07:59:50,033 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-19 07:59:50,033 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1638965294] [2023-11-19 07:59:50,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:59:50,034 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 [2023-11-19 07:59:50,034 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a1a1979-c72e-4c62-a279-8ac6b042c3ab/bin/uautomizer-verify-uCwYo4JHxu/mathsat [2023-11-19 07:59:50,035 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a1a1979-c72e-4c62-a279-8ac6b042c3ab/bin/uautomizer-verify-uCwYo4JHxu/mathsat -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) [2023-11-19 07:59:50,037 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a1a1979-c72e-4c62-a279-8ac6b042c3ab/bin/uautomizer-verify-uCwYo4JHxu/mathsat -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 [2023-11-19 07:59:50,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:59:50,113 INFO L262 TraceCheckSpWp]: Trace formula consists of 57 conjuncts, 10 conjunts are in the unsatisfiable core [2023-11-19 07:59:50,115 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:59:50,228 INFO L349 Elim1Store]: treesize reduction 24, result has 33.3 percent of original size [2023-11-19 07:59:50,229 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 21 treesize of output 20 [2023-11-19 07:59:50,353 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 16 treesize of output 13 [2023-11-19 07:59:50,373 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:59:50,373 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:59:50,373 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-19 07:59:50,373 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1638965294] [2023-11-19 07:59:50,374 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1638965294] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:59:50,374 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:59:50,374 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-19 07:59:50,374 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1427949594] [2023-11-19 07:59:50,374 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:59:50,375 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-19 07:59:50,375 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-19 07:59:50,375 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-19 07:59:50,376 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-11-19 07:59:50,376 INFO L87 Difference]: Start difference. First operand 39 states and 42 transitions. Second operand has 7 states, 6 states have (on average 2.5) internal successors, (15), 5 states have internal predecessors, (15), 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) [2023-11-19 07:59:50,549 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:59:50,549 INFO L93 Difference]: Finished difference Result 44 states and 46 transitions. [2023-11-19 07:59:50,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-19 07:59:50,550 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.5) internal successors, (15), 5 states have internal predecessors, (15), 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 17 [2023-11-19 07:59:50,551 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:59:50,551 INFO L225 Difference]: With dead ends: 44 [2023-11-19 07:59:50,551 INFO L226 Difference]: Without dead ends: 44 [2023-11-19 07:59:50,551 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2023-11-19 07:59:50,552 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 28 mSDsluCounter, 65 mSDsCounter, 0 mSdLazyCounter, 89 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 87 SdHoareTripleChecker+Invalid, 91 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 89 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 07:59:50,552 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 87 Invalid, 91 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 89 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 07:59:50,553 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2023-11-19 07:59:50,554 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 40. [2023-11-19 07:59:50,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40 states, 30 states have (on average 1.4) internal successors, (42), 37 states have internal predecessors, (42), 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) [2023-11-19 07:59:50,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 44 transitions. [2023-11-19 07:59:50,555 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 44 transitions. Word has length 17 [2023-11-19 07:59:50,556 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:59:50,556 INFO L495 AbstractCegarLoop]: Abstraction has 40 states and 44 transitions. [2023-11-19 07:59:50,556 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 2.5) internal successors, (15), 5 states have internal predecessors, (15), 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) [2023-11-19 07:59:50,556 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 44 transitions. [2023-11-19 07:59:50,556 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2023-11-19 07:59:50,557 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:59:50,557 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:59:50,561 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a1a1979-c72e-4c62-a279-8ac6b042c3ab/bin/uautomizer-verify-uCwYo4JHxu/mathsat -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 [2023-11-19 07:59:50,759 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a1a1979-c72e-4c62-a279-8ac6b042c3ab/bin/uautomizer-verify-uCwYo4JHxu/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-19 07:59:50,760 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 10 more)] === [2023-11-19 07:59:50,760 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:59:50,760 INFO L85 PathProgramCache]: Analyzing trace with hash 406071094, now seen corresponding path program 1 times [2023-11-19 07:59:50,760 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-19 07:59:50,760 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [495806111] [2023-11-19 07:59:50,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:59:50,761 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 [2023-11-19 07:59:50,761 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a1a1979-c72e-4c62-a279-8ac6b042c3ab/bin/uautomizer-verify-uCwYo4JHxu/mathsat [2023-11-19 07:59:50,762 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a1a1979-c72e-4c62-a279-8ac6b042c3ab/bin/uautomizer-verify-uCwYo4JHxu/mathsat -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) [2023-11-19 07:59:50,763 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a1a1979-c72e-4c62-a279-8ac6b042c3ab/bin/uautomizer-verify-uCwYo4JHxu/mathsat -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 [2023-11-19 07:59:50,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:59:50,839 INFO L262 TraceCheckSpWp]: Trace formula consists of 57 conjuncts, 11 conjunts are in the unsatisfiable core [2023-11-19 07:59:50,847 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:59:51,024 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:59:51,025 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 [2023-11-19 07:59:51,129 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:59:51,129 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:59:51,129 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-19 07:59:51,129 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [495806111] [2023-11-19 07:59:51,130 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [495806111] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:59:51,130 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:59:51,130 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 07:59:51,130 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [738598812] [2023-11-19 07:59:51,130 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:59:51,131 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-19 07:59:51,131 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-19 07:59:51,131 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-19 07:59:51,131 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-19 07:59:51,132 INFO L87 Difference]: Start difference. First operand 40 states and 44 transitions. Second operand has 6 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 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) [2023-11-19 07:59:51,456 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:59:51,456 INFO L93 Difference]: Finished difference Result 48 states and 51 transitions. [2023-11-19 07:59:51,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-19 07:59:51,457 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 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 17 [2023-11-19 07:59:51,457 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:59:51,458 INFO L225 Difference]: With dead ends: 48 [2023-11-19 07:59:51,458 INFO L226 Difference]: Without dead ends: 48 [2023-11-19 07:59:51,458 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2023-11-19 07:59:51,459 INFO L413 NwaCegarLoop]: 32 mSDtfsCounter, 51 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 68 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 94 SdHoareTripleChecker+Invalid, 73 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 68 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-19 07:59:51,459 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [51 Valid, 94 Invalid, 73 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 68 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-19 07:59:51,460 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2023-11-19 07:59:51,461 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 36. [2023-11-19 07:59:51,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 27 states have (on average 1.3333333333333333) internal successors, (36), 33 states have internal predecessors, (36), 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) [2023-11-19 07:59:51,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 38 transitions. [2023-11-19 07:59:51,461 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 38 transitions. Word has length 17 [2023-11-19 07:59:51,462 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:59:51,462 INFO L495 AbstractCegarLoop]: Abstraction has 36 states and 38 transitions. [2023-11-19 07:59:51,462 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 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) [2023-11-19 07:59:51,462 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 38 transitions. [2023-11-19 07:59:51,462 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2023-11-19 07:59:51,468 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:59:51,468 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:59:51,471 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a1a1979-c72e-4c62-a279-8ac6b042c3ab/bin/uautomizer-verify-uCwYo4JHxu/mathsat -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 [2023-11-19 07:59:51,669 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a1a1979-c72e-4c62-a279-8ac6b042c3ab/bin/uautomizer-verify-uCwYo4JHxu/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-19 07:59:51,669 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 10 more)] === [2023-11-19 07:59:51,669 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:59:51,670 INFO L85 PathProgramCache]: Analyzing trace with hash 406070677, now seen corresponding path program 1 times [2023-11-19 07:59:51,670 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-19 07:59:51,670 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [759781176] [2023-11-19 07:59:51,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:59:51,670 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 [2023-11-19 07:59:51,670 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a1a1979-c72e-4c62-a279-8ac6b042c3ab/bin/uautomizer-verify-uCwYo4JHxu/mathsat [2023-11-19 07:59:51,671 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a1a1979-c72e-4c62-a279-8ac6b042c3ab/bin/uautomizer-verify-uCwYo4JHxu/mathsat -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) [2023-11-19 07:59:51,673 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a1a1979-c72e-4c62-a279-8ac6b042c3ab/bin/uautomizer-verify-uCwYo4JHxu/mathsat -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 [2023-11-19 07:59:51,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:59:51,729 INFO L262 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-19 07:59:51,730 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:59:51,757 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:59:51,757 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:59:51,758 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-19 07:59:51,758 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [759781176] [2023-11-19 07:59:51,758 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [759781176] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:59:51,758 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:59:51,758 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-19 07:59:51,758 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1051948528] [2023-11-19 07:59:51,759 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:59:51,759 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-19 07:59:51,759 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-19 07:59:51,760 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-19 07:59:51,760 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-19 07:59:51,760 INFO L87 Difference]: Start difference. First operand 36 states and 38 transitions. Second operand has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 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) [2023-11-19 07:59:51,805 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:59:51,806 INFO L93 Difference]: Finished difference Result 42 states and 43 transitions. [2023-11-19 07:59:51,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-19 07:59:51,806 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 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 17 [2023-11-19 07:59:51,806 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:59:51,807 INFO L225 Difference]: With dead ends: 42 [2023-11-19 07:59:51,807 INFO L226 Difference]: Without dead ends: 42 [2023-11-19 07:59:51,807 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-11-19 07:59:51,808 INFO L413 NwaCegarLoop]: 34 mSDtfsCounter, 8 mSDsluCounter, 89 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 123 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 07:59:51,809 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 123 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 07:59:51,809 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2023-11-19 07:59:51,811 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 38. [2023-11-19 07:59:51,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 29 states have (on average 1.3103448275862069) internal successors, (38), 35 states have internal predecessors, (38), 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) [2023-11-19 07:59:51,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 40 transitions. [2023-11-19 07:59:51,812 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 40 transitions. Word has length 17 [2023-11-19 07:59:51,812 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:59:51,812 INFO L495 AbstractCegarLoop]: Abstraction has 38 states and 40 transitions. [2023-11-19 07:59:51,812 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 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) [2023-11-19 07:59:51,813 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 40 transitions. [2023-11-19 07:59:51,814 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2023-11-19 07:59:51,814 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:59:51,815 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:59:51,822 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a1a1979-c72e-4c62-a279-8ac6b042c3ab/bin/uautomizer-verify-uCwYo4JHxu/mathsat -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 [2023-11-19 07:59:52,022 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a1a1979-c72e-4c62-a279-8ac6b042c3ab/bin/uautomizer-verify-uCwYo4JHxu/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-19 07:59:52,022 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 10 more)] === [2023-11-19 07:59:52,023 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:59:52,023 INFO L85 PathProgramCache]: Analyzing trace with hash 861631573, now seen corresponding path program 1 times [2023-11-19 07:59:52,023 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-19 07:59:52,023 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [815703462] [2023-11-19 07:59:52,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:59:52,024 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 [2023-11-19 07:59:52,024 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a1a1979-c72e-4c62-a279-8ac6b042c3ab/bin/uautomizer-verify-uCwYo4JHxu/mathsat [2023-11-19 07:59:52,025 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a1a1979-c72e-4c62-a279-8ac6b042c3ab/bin/uautomizer-verify-uCwYo4JHxu/mathsat -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) [2023-11-19 07:59:52,027 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a1a1979-c72e-4c62-a279-8ac6b042c3ab/bin/uautomizer-verify-uCwYo4JHxu/mathsat -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 [2023-11-19 07:59:52,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:59:52,103 INFO L262 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 11 conjunts are in the unsatisfiable core [2023-11-19 07:59:52,106 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:59:52,279 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:59:52,280 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:59:52,280 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-19 07:59:52,280 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [815703462] [2023-11-19 07:59:52,280 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [815703462] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:59:52,280 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:59:52,280 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 07:59:52,281 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1441059630] [2023-11-19 07:59:52,281 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:59:52,281 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-19 07:59:52,281 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-19 07:59:52,282 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-19 07:59:52,282 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-19 07:59:52,282 INFO L87 Difference]: Start difference. First operand 38 states and 40 transitions. Second operand has 6 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 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) [2023-11-19 07:59:52,398 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:59:52,398 INFO L93 Difference]: Finished difference Result 38 states and 40 transitions. [2023-11-19 07:59:52,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-19 07:59:52,398 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 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 18 [2023-11-19 07:59:52,399 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:59:52,399 INFO L225 Difference]: With dead ends: 38 [2023-11-19 07:59:52,399 INFO L226 Difference]: Without dead ends: 38 [2023-11-19 07:59:52,399 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2023-11-19 07:59:52,400 INFO L413 NwaCegarLoop]: 29 mSDtfsCounter, 33 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 76 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 07:59:52,400 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 76 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 07:59:52,401 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2023-11-19 07:59:52,402 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 37. [2023-11-19 07:59:52,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 29 states have (on average 1.2758620689655173) internal successors, (37), 34 states have internal predecessors, (37), 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) [2023-11-19 07:59:52,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 39 transitions. [2023-11-19 07:59:52,402 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 39 transitions. Word has length 18 [2023-11-19 07:59:52,403 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:59:52,403 INFO L495 AbstractCegarLoop]: Abstraction has 37 states and 39 transitions. [2023-11-19 07:59:52,403 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 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) [2023-11-19 07:59:52,403 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 39 transitions. [2023-11-19 07:59:52,403 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2023-11-19 07:59:52,404 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:59:52,404 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:59:52,412 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a1a1979-c72e-4c62-a279-8ac6b042c3ab/bin/uautomizer-verify-uCwYo4JHxu/mathsat -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 [2023-11-19 07:59:52,606 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a1a1979-c72e-4c62-a279-8ac6b042c3ab/bin/uautomizer-verify-uCwYo4JHxu/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-19 07:59:52,606 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 10 more)] === [2023-11-19 07:59:52,607 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:59:52,607 INFO L85 PathProgramCache]: Analyzing trace with hash 861631572, now seen corresponding path program 1 times [2023-11-19 07:59:52,607 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-19 07:59:52,607 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [727659805] [2023-11-19 07:59:52,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:59:52,607 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 [2023-11-19 07:59:52,608 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a1a1979-c72e-4c62-a279-8ac6b042c3ab/bin/uautomizer-verify-uCwYo4JHxu/mathsat [2023-11-19 07:59:52,608 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a1a1979-c72e-4c62-a279-8ac6b042c3ab/bin/uautomizer-verify-uCwYo4JHxu/mathsat -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) [2023-11-19 07:59:52,609 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a1a1979-c72e-4c62-a279-8ac6b042c3ab/bin/uautomizer-verify-uCwYo4JHxu/mathsat -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 [2023-11-19 07:59:52,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:59:52,669 INFO L262 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-19 07:59:52,670 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:59:52,716 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:59:52,716 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:59:52,717 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-19 07:59:52,717 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [727659805] [2023-11-19 07:59:52,717 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [727659805] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:59:52,717 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:59:52,717 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 07:59:52,718 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1805004380] [2023-11-19 07:59:52,718 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:59:52,719 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-19 07:59:52,719 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-19 07:59:52,719 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-19 07:59:52,720 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-19 07:59:52,720 INFO L87 Difference]: Start difference. First operand 37 states and 39 transitions. Second operand has 5 states, 4 states have (on average 4.0) internal successors, (16), 5 states have internal predecessors, (16), 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) [2023-11-19 07:59:52,803 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:59:52,803 INFO L93 Difference]: Finished difference Result 37 states and 39 transitions. [2023-11-19 07:59:52,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-19 07:59:52,803 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 4.0) internal successors, (16), 5 states have internal predecessors, (16), 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 18 [2023-11-19 07:59:52,804 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:59:52,804 INFO L225 Difference]: With dead ends: 37 [2023-11-19 07:59:52,804 INFO L226 Difference]: Without dead ends: 37 [2023-11-19 07:59:52,804 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-11-19 07:59:52,805 INFO L413 NwaCegarLoop]: 27 mSDtfsCounter, 37 mSDsluCounter, 31 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 58 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 07:59:52,805 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [37 Valid, 58 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 07:59:52,806 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2023-11-19 07:59:52,806 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 36. [2023-11-19 07:59:52,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 29 states have (on average 1.2413793103448276) internal successors, (36), 33 states have internal predecessors, (36), 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) [2023-11-19 07:59:52,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 38 transitions. [2023-11-19 07:59:52,807 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 38 transitions. Word has length 18 [2023-11-19 07:59:52,807 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:59:52,807 INFO L495 AbstractCegarLoop]: Abstraction has 36 states and 38 transitions. [2023-11-19 07:59:52,807 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 4.0) internal successors, (16), 5 states have internal predecessors, (16), 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) [2023-11-19 07:59:52,808 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 38 transitions. [2023-11-19 07:59:52,808 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2023-11-19 07:59:52,808 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:59:52,808 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:59:52,821 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a1a1979-c72e-4c62-a279-8ac6b042c3ab/bin/uautomizer-verify-uCwYo4JHxu/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Ended with exit code 0 [2023-11-19 07:59:53,009 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a1a1979-c72e-4c62-a279-8ac6b042c3ab/bin/uautomizer-verify-uCwYo4JHxu/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-19 07:59:53,009 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 10 more)] === [2023-11-19 07:59:53,009 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:59:53,009 INFO L85 PathProgramCache]: Analyzing trace with hash -607702474, now seen corresponding path program 1 times [2023-11-19 07:59:53,009 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-19 07:59:53,009 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1387349550] [2023-11-19 07:59:53,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:59:53,010 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 [2023-11-19 07:59:53,010 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a1a1979-c72e-4c62-a279-8ac6b042c3ab/bin/uautomizer-verify-uCwYo4JHxu/mathsat [2023-11-19 07:59:53,011 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a1a1979-c72e-4c62-a279-8ac6b042c3ab/bin/uautomizer-verify-uCwYo4JHxu/mathsat -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) [2023-11-19 07:59:53,012 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a1a1979-c72e-4c62-a279-8ac6b042c3ab/bin/uautomizer-verify-uCwYo4JHxu/mathsat -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 [2023-11-19 07:59:53,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:59:53,090 INFO L262 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 10 conjunts are in the unsatisfiable core [2023-11-19 07:59:53,092 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:59:53,219 WARN L876 $PredicateComparison]: unable to prove that (exists ((|ULTIMATE.start_probe1_6_~p~0#1.base| (_ BitVec 32))) (and (= (select |c_ULTIMATE.start_main_old_#valid#1| |ULTIMATE.start_probe1_6_~p~0#1.base|) (_ bv0 1)) (= |c_#valid| (store |c_ULTIMATE.start_main_old_#valid#1| |ULTIMATE.start_probe1_6_~p~0#1.base| (_ bv0 1))))) is different from true [2023-11-19 07:59:53,246 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:59:53,246 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:59:53,247 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-19 07:59:53,247 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1387349550] [2023-11-19 07:59:53,247 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1387349550] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:59:53,247 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:59:53,247 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-19 07:59:53,247 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [627058338] [2023-11-19 07:59:53,247 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:59:53,248 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-19 07:59:53,248 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-19 07:59:53,248 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-19 07:59:53,248 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=32, Unknown=1, NotChecked=10, Total=56 [2023-11-19 07:59:53,249 INFO L87 Difference]: Start difference. First operand 36 states and 38 transitions. Second operand has 8 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 7 states have internal predecessors, (17), 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) [2023-11-19 07:59:53,417 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:59:53,417 INFO L93 Difference]: Finished difference Result 39 states and 40 transitions. [2023-11-19 07:59:53,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-19 07:59:53,418 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 7 states have internal predecessors, (17), 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 19 [2023-11-19 07:59:53,418 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:59:53,418 INFO L225 Difference]: With dead ends: 39 [2023-11-19 07:59:53,418 INFO L226 Difference]: Without dead ends: 31 [2023-11-19 07:59:53,419 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=54, Unknown=1, NotChecked=14, Total=90 [2023-11-19 07:59:53,419 INFO L413 NwaCegarLoop]: 27 mSDtfsCounter, 10 mSDsluCounter, 83 mSDsCounter, 0 mSdLazyCounter, 80 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 110 SdHoareTripleChecker+Invalid, 116 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 80 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 34 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 07:59:53,420 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 110 Invalid, 116 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 80 Invalid, 0 Unknown, 34 Unchecked, 0.1s Time] [2023-11-19 07:59:53,420 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2023-11-19 07:59:53,421 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2023-11-19 07:59:53,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 24 states have (on average 1.2083333333333333) internal successors, (29), 28 states have internal predecessors, (29), 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) [2023-11-19 07:59:53,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 31 transitions. [2023-11-19 07:59:53,422 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 31 transitions. Word has length 19 [2023-11-19 07:59:53,422 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:59:53,422 INFO L495 AbstractCegarLoop]: Abstraction has 31 states and 31 transitions. [2023-11-19 07:59:53,422 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 7 states have internal predecessors, (17), 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) [2023-11-19 07:59:53,422 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 31 transitions. [2023-11-19 07:59:53,423 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2023-11-19 07:59:53,423 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:59:53,423 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:59:53,428 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a1a1979-c72e-4c62-a279-8ac6b042c3ab/bin/uautomizer-verify-uCwYo4JHxu/mathsat -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)] Ended with exit code 0 [2023-11-19 07:59:53,625 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a1a1979-c72e-4c62-a279-8ac6b042c3ab/bin/uautomizer-verify-uCwYo4JHxu/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-19 07:59:53,625 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 10 more)] === [2023-11-19 07:59:53,626 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:59:53,626 INFO L85 PathProgramCache]: Analyzing trace with hash 940774974, now seen corresponding path program 1 times [2023-11-19 07:59:53,626 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-19 07:59:53,626 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [333515820] [2023-11-19 07:59:53,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:59:53,626 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 [2023-11-19 07:59:53,627 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a1a1979-c72e-4c62-a279-8ac6b042c3ab/bin/uautomizer-verify-uCwYo4JHxu/mathsat [2023-11-19 07:59:53,628 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a1a1979-c72e-4c62-a279-8ac6b042c3ab/bin/uautomizer-verify-uCwYo4JHxu/mathsat -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) [2023-11-19 07:59:53,630 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a1a1979-c72e-4c62-a279-8ac6b042c3ab/bin/uautomizer-verify-uCwYo4JHxu/mathsat -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 [2023-11-19 07:59:53,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:59:53,689 INFO L262 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 16 conjunts are in the unsatisfiable core [2023-11-19 07:59:53,692 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:59:53,814 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 [2023-11-19 07:59:53,864 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:59:53,864 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:59:53,864 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-19 07:59:53,864 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [333515820] [2023-11-19 07:59:53,864 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [333515820] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:59:53,864 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:59:53,865 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-19 07:59:53,865 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1940005992] [2023-11-19 07:59:53,865 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:59:53,865 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-19 07:59:53,865 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-19 07:59:53,866 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-19 07:59:53,866 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2023-11-19 07:59:53,866 INFO L87 Difference]: Start difference. First operand 31 states and 31 transitions. Second operand has 9 states, 7 states have (on average 2.4285714285714284) internal successors, (17), 8 states have internal predecessors, (17), 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) [2023-11-19 07:59:54,041 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:59:54,041 INFO L93 Difference]: Finished difference Result 30 states and 30 transitions. [2023-11-19 07:59:54,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-19 07:59:54,041 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 7 states have (on average 2.4285714285714284) internal successors, (17), 8 states have internal predecessors, (17), 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 19 [2023-11-19 07:59:54,042 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:59:54,042 INFO L225 Difference]: With dead ends: 30 [2023-11-19 07:59:54,042 INFO L226 Difference]: Without dead ends: 30 [2023-11-19 07:59:54,042 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=47, Invalid=163, Unknown=0, NotChecked=0, Total=210 [2023-11-19 07:59:54,043 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 36 mSDsluCounter, 59 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 78 SdHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 07:59:54,043 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 78 Invalid, 58 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 07:59:54,044 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2023-11-19 07:59:54,045 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2023-11-19 07:59:54,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 24 states have (on average 1.1666666666666667) internal successors, (28), 27 states have internal predecessors, (28), 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) [2023-11-19 07:59:54,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 30 transitions. [2023-11-19 07:59:54,045 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 30 transitions. Word has length 19 [2023-11-19 07:59:54,045 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:59:54,046 INFO L495 AbstractCegarLoop]: Abstraction has 30 states and 30 transitions. [2023-11-19 07:59:54,046 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 7 states have (on average 2.4285714285714284) internal successors, (17), 8 states have internal predecessors, (17), 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) [2023-11-19 07:59:54,046 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 30 transitions. [2023-11-19 07:59:54,046 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2023-11-19 07:59:54,046 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:59:54,047 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] [2023-11-19 07:59:54,058 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a1a1979-c72e-4c62-a279-8ac6b042c3ab/bin/uautomizer-verify-uCwYo4JHxu/mathsat -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 [2023-11-19 07:59:54,249 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a1a1979-c72e-4c62-a279-8ac6b042c3ab/bin/uautomizer-verify-uCwYo4JHxu/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-19 07:59:54,249 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 10 more)] === [2023-11-19 07:59:54,250 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:59:54,250 INFO L85 PathProgramCache]: Analyzing trace with hash -900345610, now seen corresponding path program 1 times [2023-11-19 07:59:54,250 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-19 07:59:54,250 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1963385633] [2023-11-19 07:59:54,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:59:54,250 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 [2023-11-19 07:59:54,250 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a1a1979-c72e-4c62-a279-8ac6b042c3ab/bin/uautomizer-verify-uCwYo4JHxu/mathsat [2023-11-19 07:59:54,251 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a1a1979-c72e-4c62-a279-8ac6b042c3ab/bin/uautomizer-verify-uCwYo4JHxu/mathsat -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) [2023-11-19 07:59:54,253 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a1a1979-c72e-4c62-a279-8ac6b042c3ab/bin/uautomizer-verify-uCwYo4JHxu/mathsat -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 [2023-11-19 07:59:54,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:59:54,333 INFO L262 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-19 07:59:54,335 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:59:54,347 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:59:54,347 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:59:54,347 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-19 07:59:54,347 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1963385633] [2023-11-19 07:59:54,348 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1963385633] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:59:54,348 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:59:54,348 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 07:59:54,348 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1399137026] [2023-11-19 07:59:54,348 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:59:54,348 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 07:59:54,349 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-19 07:59:54,349 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 07:59:54,349 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-19 07:59:54,349 INFO L87 Difference]: Start difference. First operand 30 states and 30 transitions. Second operand has 4 states, 4 states have (on average 4.5) internal successors, (18), 4 states have internal predecessors, (18), 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) [2023-11-19 07:59:54,362 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:59:54,363 INFO L93 Difference]: Finished difference Result 29 states and 28 transitions. [2023-11-19 07:59:54,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 07:59:54,363 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.5) internal successors, (18), 4 states have internal predecessors, (18), 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 20 [2023-11-19 07:59:54,363 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:59:54,364 INFO L225 Difference]: With dead ends: 29 [2023-11-19 07:59:54,364 INFO L226 Difference]: Without dead ends: 29 [2023-11-19 07:59:54,364 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-19 07:59:54,365 INFO L413 NwaCegarLoop]: 26 mSDtfsCounter, 23 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 54 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 07:59:54,365 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 54 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 07:59:54,366 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2023-11-19 07:59:54,366 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2023-11-19 07:59:54,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 23 states have (on average 1.1304347826086956) internal successors, (26), 26 states have internal predecessors, (26), 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) [2023-11-19 07:59:54,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 28 transitions. [2023-11-19 07:59:54,367 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 28 transitions. Word has length 20 [2023-11-19 07:59:54,367 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:59:54,367 INFO L495 AbstractCegarLoop]: Abstraction has 29 states and 28 transitions. [2023-11-19 07:59:54,367 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.5) internal successors, (18), 4 states have internal predecessors, (18), 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) [2023-11-19 07:59:54,368 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 28 transitions. [2023-11-19 07:59:54,368 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2023-11-19 07:59:54,368 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:59:54,368 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] [2023-11-19 07:59:54,376 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a1a1979-c72e-4c62-a279-8ac6b042c3ab/bin/uautomizer-verify-uCwYo4JHxu/mathsat -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 [2023-11-19 07:59:54,571 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a1a1979-c72e-4c62-a279-8ac6b042c3ab/bin/uautomizer-verify-uCwYo4JHxu/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-19 07:59:54,571 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 10 more)] === [2023-11-19 07:59:54,572 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:59:54,572 INFO L85 PathProgramCache]: Analyzing trace with hash -900746796, now seen corresponding path program 1 times [2023-11-19 07:59:54,572 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-19 07:59:54,572 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1703582781] [2023-11-19 07:59:54,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:59:54,572 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 [2023-11-19 07:59:54,572 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a1a1979-c72e-4c62-a279-8ac6b042c3ab/bin/uautomizer-verify-uCwYo4JHxu/mathsat [2023-11-19 07:59:54,573 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a1a1979-c72e-4c62-a279-8ac6b042c3ab/bin/uautomizer-verify-uCwYo4JHxu/mathsat -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) [2023-11-19 07:59:54,587 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a1a1979-c72e-4c62-a279-8ac6b042c3ab/bin/uautomizer-verify-uCwYo4JHxu/mathsat -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 [2023-11-19 07:59:54,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:59:54,663 INFO L262 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 17 conjunts are in the unsatisfiable core [2023-11-19 07:59:54,665 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:59:54,921 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-11-19 07:59:55,006 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 23 treesize of output 11 [2023-11-19 07:59:55,045 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:59:55,045 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:59:55,046 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-19 07:59:55,046 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1703582781] [2023-11-19 07:59:55,046 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1703582781] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:59:55,046 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:59:55,046 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-19 07:59:55,046 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1165044663] [2023-11-19 07:59:55,046 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:59:55,047 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-19 07:59:55,047 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-19 07:59:55,047 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-19 07:59:55,048 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2023-11-19 07:59:55,048 INFO L87 Difference]: Start difference. First operand 29 states and 28 transitions. Second operand has 10 states, 8 states have (on average 2.25) internal successors, (18), 8 states have internal predecessors, (18), 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) [2023-11-19 07:59:55,328 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:59:55,328 INFO L93 Difference]: Finished difference Result 28 states and 27 transitions. [2023-11-19 07:59:55,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-19 07:59:55,329 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 8 states have (on average 2.25) internal successors, (18), 8 states have internal predecessors, (18), 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 20 [2023-11-19 07:59:55,329 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:59:55,329 INFO L225 Difference]: With dead ends: 28 [2023-11-19 07:59:55,329 INFO L226 Difference]: Without dead ends: 28 [2023-11-19 07:59:55,330 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=44, Invalid=112, Unknown=0, NotChecked=0, Total=156 [2023-11-19 07:59:55,330 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 27 mSDsluCounter, 53 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 68 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 72 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-19 07:59:55,331 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 68 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 72 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-19 07:59:55,331 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2023-11-19 07:59:55,332 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2023-11-19 07:59:55,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 23 states have (on average 1.0869565217391304) internal successors, (25), 25 states have internal predecessors, (25), 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) [2023-11-19 07:59:55,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 27 transitions. [2023-11-19 07:59:55,333 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 27 transitions. Word has length 20 [2023-11-19 07:59:55,333 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:59:55,333 INFO L495 AbstractCegarLoop]: Abstraction has 28 states and 27 transitions. [2023-11-19 07:59:55,333 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 8 states have (on average 2.25) internal successors, (18), 8 states have internal predecessors, (18), 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) [2023-11-19 07:59:55,333 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 27 transitions. [2023-11-19 07:59:55,334 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2023-11-19 07:59:55,334 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:59:55,334 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] [2023-11-19 07:59:55,341 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a1a1979-c72e-4c62-a279-8ac6b042c3ab/bin/uautomizer-verify-uCwYo4JHxu/mathsat -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 [2023-11-19 07:59:55,536 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a1a1979-c72e-4c62-a279-8ac6b042c3ab/bin/uautomizer-verify-uCwYo4JHxu/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-19 07:59:55,536 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 10 more)] === [2023-11-19 07:59:55,536 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:59:55,537 INFO L85 PathProgramCache]: Analyzing trace with hash 2141620480, now seen corresponding path program 1 times [2023-11-19 07:59:55,537 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-19 07:59:55,537 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1327382670] [2023-11-19 07:59:55,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:59:55,537 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 [2023-11-19 07:59:55,537 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a1a1979-c72e-4c62-a279-8ac6b042c3ab/bin/uautomizer-verify-uCwYo4JHxu/mathsat [2023-11-19 07:59:55,538 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a1a1979-c72e-4c62-a279-8ac6b042c3ab/bin/uautomizer-verify-uCwYo4JHxu/mathsat -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) [2023-11-19 07:59:55,539 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a1a1979-c72e-4c62-a279-8ac6b042c3ab/bin/uautomizer-verify-uCwYo4JHxu/mathsat -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 [2023-11-19 07:59:55,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:59:55,611 INFO L262 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 16 conjunts are in the unsatisfiable core [2023-11-19 07:59:55,613 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:59:55,633 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 [2023-11-19 07:59:55,777 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 [2023-11-19 07:59:55,829 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 [2023-11-19 07:59:55,852 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:59:55,852 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:59:55,852 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-19 07:59:55,852 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1327382670] [2023-11-19 07:59:55,853 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1327382670] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:59:55,853 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:59:55,853 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-19 07:59:55,853 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [889716154] [2023-11-19 07:59:55,853 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:59:55,854 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-19 07:59:55,854 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-19 07:59:55,854 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-19 07:59:55,854 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2023-11-19 07:59:55,855 INFO L87 Difference]: Start difference. First operand 28 states and 27 transitions. Second operand has 9 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 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) [2023-11-19 07:59:56,042 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:59:56,043 INFO L93 Difference]: Finished difference Result 27 states and 26 transitions. [2023-11-19 07:59:56,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-19 07:59:56,043 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 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 21 [2023-11-19 07:59:56,043 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:59:56,044 INFO L225 Difference]: With dead ends: 27 [2023-11-19 07:59:56,044 INFO L226 Difference]: Without dead ends: 27 [2023-11-19 07:59:56,044 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2023-11-19 07:59:56,045 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 11 mSDsluCounter, 51 mSDsCounter, 0 mSdLazyCounter, 71 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 70 SdHoareTripleChecker+Invalid, 71 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 71 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 07:59:56,045 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 70 Invalid, 71 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 71 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 07:59:56,046 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2023-11-19 07:59:56,046 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2023-11-19 07:59:56,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 23 states have (on average 1.0434782608695652) internal successors, (24), 24 states have internal predecessors, (24), 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) [2023-11-19 07:59:56,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 26 transitions. [2023-11-19 07:59:56,047 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 26 transitions. Word has length 21 [2023-11-19 07:59:56,047 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:59:56,047 INFO L495 AbstractCegarLoop]: Abstraction has 27 states and 26 transitions. [2023-11-19 07:59:56,047 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 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) [2023-11-19 07:59:56,048 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 26 transitions. [2023-11-19 07:59:56,048 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2023-11-19 07:59:56,048 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:59:56,048 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] [2023-11-19 07:59:56,059 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a1a1979-c72e-4c62-a279-8ac6b042c3ab/bin/uautomizer-verify-uCwYo4JHxu/mathsat -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 [2023-11-19 07:59:56,251 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a1a1979-c72e-4c62-a279-8ac6b042c3ab/bin/uautomizer-verify-uCwYo4JHxu/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-19 07:59:56,251 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 10 more)] === [2023-11-19 07:59:56,251 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:59:56,252 INFO L85 PathProgramCache]: Analyzing trace with hash 807949254, now seen corresponding path program 1 times [2023-11-19 07:59:56,252 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-19 07:59:56,252 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1865314793] [2023-11-19 07:59:56,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:59:56,252 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 [2023-11-19 07:59:56,252 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a1a1979-c72e-4c62-a279-8ac6b042c3ab/bin/uautomizer-verify-uCwYo4JHxu/mathsat [2023-11-19 07:59:56,253 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a1a1979-c72e-4c62-a279-8ac6b042c3ab/bin/uautomizer-verify-uCwYo4JHxu/mathsat -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) [2023-11-19 07:59:56,254 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a1a1979-c72e-4c62-a279-8ac6b042c3ab/bin/uautomizer-verify-uCwYo4JHxu/mathsat -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 [2023-11-19 07:59:56,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:59:56,337 INFO L262 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 22 conjunts are in the unsatisfiable core [2023-11-19 07:59:56,340 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:59:56,492 INFO L349 Elim1Store]: treesize reduction 24, result has 33.3 percent of original size [2023-11-19 07:59:56,493 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 21 treesize of output 20 [2023-11-19 07:59:56,717 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-11-19 07:59:56,827 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 [2023-11-19 07:59:56,890 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 16 treesize of output 13 [2023-11-19 07:59:56,903 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:59:56,903 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:59:56,903 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-19 07:59:56,903 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1865314793] [2023-11-19 07:59:56,903 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1865314793] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:59:56,904 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:59:56,904 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-11-19 07:59:56,904 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1047983577] [2023-11-19 07:59:56,904 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:59:56,905 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-19 07:59:56,905 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-19 07:59:56,906 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-19 07:59:56,906 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2023-11-19 07:59:56,907 INFO L87 Difference]: Start difference. First operand 27 states and 26 transitions. Second operand has 11 states, 9 states have (on average 2.3333333333333335) internal successors, (21), 9 states have internal predecessors, (21), 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) [2023-11-19 07:59:57,283 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:59:57,284 INFO L93 Difference]: Finished difference Result 26 states and 25 transitions. [2023-11-19 07:59:57,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-19 07:59:57,284 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 9 states have (on average 2.3333333333333335) internal successors, (21), 9 states have internal predecessors, (21), 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 23 [2023-11-19 07:59:57,285 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:59:57,285 INFO L225 Difference]: With dead ends: 26 [2023-11-19 07:59:57,285 INFO L226 Difference]: Without dead ends: 26 [2023-11-19 07:59:57,285 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=68, Invalid=238, Unknown=0, NotChecked=0, Total=306 [2023-11-19 07:59:57,286 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 21 mSDsluCounter, 58 mSDsCounter, 0 mSdLazyCounter, 98 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 71 SdHoareTripleChecker+Invalid, 105 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 98 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-19 07:59:57,286 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 71 Invalid, 105 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 98 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-19 07:59:57,287 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2023-11-19 07:59:57,288 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2023-11-19 07:59:57,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 23 states have (on average 1.0) internal successors, (23), 23 states have internal predecessors, (23), 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) [2023-11-19 07:59:57,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 25 transitions. [2023-11-19 07:59:57,288 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 25 transitions. Word has length 23 [2023-11-19 07:59:57,289 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:59:57,289 INFO L495 AbstractCegarLoop]: Abstraction has 26 states and 25 transitions. [2023-11-19 07:59:57,289 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 9 states have (on average 2.3333333333333335) internal successors, (21), 9 states have internal predecessors, (21), 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) [2023-11-19 07:59:57,289 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 25 transitions. [2023-11-19 07:59:57,290 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2023-11-19 07:59:57,290 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:59:57,290 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] [2023-11-19 07:59:57,296 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a1a1979-c72e-4c62-a279-8ac6b042c3ab/bin/uautomizer-verify-uCwYo4JHxu/mathsat -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)] Forceful destruction successful, exit code 0 [2023-11-19 07:59:57,492 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a1a1979-c72e-4c62-a279-8ac6b042c3ab/bin/uautomizer-verify-uCwYo4JHxu/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-19 07:59:57,493 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 10 more)] === [2023-11-19 07:59:57,493 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:59:57,493 INFO L85 PathProgramCache]: Analyzing trace with hash -949846393, now seen corresponding path program 1 times [2023-11-19 07:59:57,493 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-19 07:59:57,493 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2027877998] [2023-11-19 07:59:57,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:59:57,494 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 [2023-11-19 07:59:57,494 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a1a1979-c72e-4c62-a279-8ac6b042c3ab/bin/uautomizer-verify-uCwYo4JHxu/mathsat [2023-11-19 07:59:57,495 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a1a1979-c72e-4c62-a279-8ac6b042c3ab/bin/uautomizer-verify-uCwYo4JHxu/mathsat -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) [2023-11-19 07:59:57,528 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a1a1979-c72e-4c62-a279-8ac6b042c3ab/bin/uautomizer-verify-uCwYo4JHxu/mathsat -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 [2023-11-19 07:59:57,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:59:57,596 INFO L262 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 21 conjunts are in the unsatisfiable core [2023-11-19 07:59:57,598 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:59:57,837 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 [2023-11-19 07:59:57,934 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 33 treesize of output 17 [2023-11-19 07:59:57,993 WARN L876 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_disconnect_6_#t~mem47#1.base_10| (_ BitVec 32))) (and (= |c_#valid| (store |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_disconnect_6_#t~mem47#1.base_10| (_ bv0 1))) (= (_ bv0 1) (select |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_disconnect_6_#t~mem47#1.base_10|)))) is different from true [2023-11-19 07:59:58,014 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:59:58,014 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:59:58,014 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-19 07:59:58,014 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2027877998] [2023-11-19 07:59:58,015 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2027877998] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:59:58,015 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:59:58,015 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-11-19 07:59:58,015 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [735829781] [2023-11-19 07:59:58,015 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:59:58,016 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-19 07:59:58,016 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-19 07:59:58,016 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-19 07:59:58,016 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=74, Unknown=1, NotChecked=16, Total=110 [2023-11-19 07:59:58,017 INFO L87 Difference]: Start difference. First operand 26 states and 25 transitions. Second operand has 11 states, 9 states have (on average 2.5555555555555554) internal successors, (23), 10 states have internal predecessors, (23), 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) [2023-11-19 07:59:58,496 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:59:58,496 INFO L93 Difference]: Finished difference Result 25 states and 24 transitions. [2023-11-19 07:59:58,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-19 07:59:58,497 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 9 states have (on average 2.5555555555555554) internal successors, (23), 10 states have internal predecessors, (23), 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 25 [2023-11-19 07:59:58,498 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:59:58,498 INFO L225 Difference]: With dead ends: 25 [2023-11-19 07:59:58,498 INFO L226 Difference]: Without dead ends: 0 [2023-11-19 07:59:58,498 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=42, Invalid=171, Unknown=1, NotChecked=26, Total=240 [2023-11-19 07:59:58,499 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 10 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 101 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 76 SdHoareTripleChecker+Invalid, 131 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 101 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 28 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-19 07:59:58,499 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 76 Invalid, 131 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 101 Invalid, 0 Unknown, 28 Unchecked, 0.2s Time] [2023-11-19 07:59:58,499 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2023-11-19 07:59:58,500 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2023-11-19 07:59:58,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:59:58,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2023-11-19 07:59:58,500 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 25 [2023-11-19 07:59:58,500 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:59:58,500 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-11-19 07:59:58,500 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 9 states have (on average 2.5555555555555554) internal successors, (23), 10 states have internal predecessors, (23), 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) [2023-11-19 07:59:58,501 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2023-11-19 07:59:58,501 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2023-11-19 07:59:58,503 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (12 of 13 remaining) [2023-11-19 07:59:58,504 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (11 of 13 remaining) [2023-11-19 07:59:58,504 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (10 of 13 remaining) [2023-11-19 07:59:58,504 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_FREE (9 of 13 remaining) [2023-11-19 07:59:58,504 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_FREE (8 of 13 remaining) [2023-11-19 07:59:58,504 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 13 remaining) [2023-11-19 07:59:58,504 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 13 remaining) [2023-11-19 07:59:58,505 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_FREE (5 of 13 remaining) [2023-11-19 07:59:58,505 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_FREE (4 of 13 remaining) [2023-11-19 07:59:58,505 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_FREE (3 of 13 remaining) [2023-11-19 07:59:58,505 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (2 of 13 remaining) [2023-11-19 07:59:58,505 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE (1 of 13 remaining) [2023-11-19 07:59:58,505 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK (0 of 13 remaining) [2023-11-19 07:59:58,507 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a1a1979-c72e-4c62-a279-8ac6b042c3ab/bin/uautomizer-verify-uCwYo4JHxu/mathsat -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)] Ended with exit code 0 [2023-11-19 07:59:58,706 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a1a1979-c72e-4c62-a279-8ac6b042c3ab/bin/uautomizer-verify-uCwYo4JHxu/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-19 07:59:58,709 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:59:58,711 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-19 07:59:58,719 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.11 07:59:58 BoogieIcfgContainer [2023-11-19 07:59:58,719 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-19 07:59:58,720 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-19 07:59:58,720 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-19 07:59:58,720 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-19 07:59:58,721 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:59:44" (3/4) ... [2023-11-19 07:59:58,723 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-11-19 07:59:58,727 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure ldv_malloc [2023-11-19 07:59:58,736 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 12 nodes and edges [2023-11-19 07:59:58,737 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2023-11-19 07:59:58,737 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2023-11-19 07:59:58,841 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a1a1979-c72e-4c62-a279-8ac6b042c3ab/bin/uautomizer-verify-uCwYo4JHxu/witness.graphml [2023-11-19 07:59:58,842 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a1a1979-c72e-4c62-a279-8ac6b042c3ab/bin/uautomizer-verify-uCwYo4JHxu/witness.yml [2023-11-19 07:59:58,842 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-19 07:59:58,843 INFO L158 Benchmark]: Toolchain (without parser) took 15777.79ms. Allocated memory was 102.8MB in the beginning and 123.7MB in the end (delta: 21.0MB). Free memory was 77.0MB in the beginning and 50.9MB in the end (delta: 26.1MB). Peak memory consumption was 48.8MB. Max. memory is 16.1GB. [2023-11-19 07:59:58,843 INFO L158 Benchmark]: CDTParser took 0.29ms. Allocated memory is still 71.3MB. Free memory was 46.9MB in the beginning and 46.8MB in the end (delta: 65.0kB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-19 07:59:58,844 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1002.82ms. Allocated memory is still 102.8MB. Free memory was 76.8MB in the beginning and 72.3MB in the end (delta: 4.5MB). Peak memory consumption was 23.4MB. Max. memory is 16.1GB. [2023-11-19 07:59:58,844 INFO L158 Benchmark]: Boogie Procedure Inliner took 83.70ms. Allocated memory is still 102.8MB. Free memory was 72.3MB in the beginning and 70.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-19 07:59:58,845 INFO L158 Benchmark]: Boogie Preprocessor took 62.97ms. Allocated memory is still 102.8MB. Free memory was 70.2MB in the beginning and 68.5MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-19 07:59:58,845 INFO L158 Benchmark]: RCFGBuilder took 414.74ms. Allocated memory is still 102.8MB. Free memory was 68.5MB in the beginning and 53.4MB in the end (delta: 15.1MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2023-11-19 07:59:58,846 INFO L158 Benchmark]: TraceAbstraction took 14078.10ms. Allocated memory was 102.8MB in the beginning and 123.7MB in the end (delta: 21.0MB). Free memory was 53.0MB in the beginning and 56.1MB in the end (delta: -3.1MB). Peak memory consumption was 19.1MB. Max. memory is 16.1GB. [2023-11-19 07:59:58,846 INFO L158 Benchmark]: Witness Printer took 122.34ms. Allocated memory is still 123.7MB. Free memory was 56.1MB in the beginning and 50.9MB in the end (delta: 5.2MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2023-11-19 07:59:58,848 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29ms. Allocated memory is still 71.3MB. Free memory was 46.9MB in the beginning and 46.8MB in the end (delta: 65.0kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1002.82ms. Allocated memory is still 102.8MB. Free memory was 76.8MB in the beginning and 72.3MB in the end (delta: 4.5MB). Peak memory consumption was 23.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 83.70ms. Allocated memory is still 102.8MB. Free memory was 72.3MB in the beginning and 70.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 62.97ms. Allocated memory is still 102.8MB. Free memory was 70.2MB in the beginning and 68.5MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 414.74ms. Allocated memory is still 102.8MB. Free memory was 68.5MB in the beginning and 53.4MB in the end (delta: 15.1MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * TraceAbstraction took 14078.10ms. Allocated memory was 102.8MB in the beginning and 123.7MB in the end (delta: 21.0MB). Free memory was 53.0MB in the beginning and 56.1MB in the end (delta: -3.1MB). Peak memory consumption was 19.1MB. Max. memory is 16.1GB. * Witness Printer took 122.34ms. Allocated memory is still 123.7MB. Free memory was 56.1MB in the beginning and 50.9MB in the end (delta: 5.2MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 777]: free always succeeds For all program executions holds that free always succeeds at this location - PositiveResult [Line: 777]: free always succeeds For all program executions holds that free always succeeds at this location - PositiveResult [Line: 777]: free always succeeds For all program executions holds that free always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 781]: free always succeeds For all program executions holds that free always succeeds at this location - PositiveResult [Line: 781]: free always succeeds For all program executions holds that free always succeeds at this location - PositiveResult [Line: 781]: free always succeeds For all program executions holds that free always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 791]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 43 locations, 13 error locations. Started 1 CEGAR loops. OverallTime: 14.0s, OverallIterations: 22, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 3.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 521 SdHoareTripleChecker+Valid, 2.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 521 mSDsluCounter, 2177 SdHoareTripleChecker+Invalid, 1.9s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 117 IncrementalHoareTripleChecker+Unchecked, 1500 mSDsCounter, 41 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1129 IncrementalHoareTripleChecker+Invalid, 1287 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 41 mSolverCounterUnsat, 677 mSDtfsCounter, 1129 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 384 GetRequests, 243 SyntacticMatches, 0 SemanticMatches, 141 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 102 ImplicationChecksByTransitivity, 2.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=69occurred in iteration=5, InterpolantAutomatonStates: 150, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 22 MinimizatonAttempts, 82 StatesRemovedByMinimization, 11 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 0.6s SatisfiabilityAnalysisTime, 4.0s InterpolantComputationTime, 362 NumberOfCodeBlocks, 362 NumberOfCodeBlocksAsserted, 22 NumberOfCheckSat, 340 ConstructedInterpolants, 13 QuantifiedInterpolants, 2823 SizeOfPredicates, 84 NumberOfNonLiveVariables, 1379 ConjunctsInSsa, 207 ConjunctsInUnsatCore, 22 InterpolantComputations, 22 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 13 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-11-19 07:59:58,888 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a1a1979-c72e-4c62-a279-8ac6b042c3ab/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE