./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/array-memsafety/array01-alloca-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d381aea4-1210-456f-9430-11c73b854b58/bin/uautomizer-verify-BQ2R08f2Ya/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d381aea4-1210-456f-9430-11c73b854b58/bin/uautomizer-verify-BQ2R08f2Ya/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d381aea4-1210-456f-9430-11c73b854b58/bin/uautomizer-verify-BQ2R08f2Ya/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d381aea4-1210-456f-9430-11c73b854b58/bin/uautomizer-verify-BQ2R08f2Ya/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/array-memsafety/array01-alloca-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d381aea4-1210-456f-9430-11c73b854b58/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d381aea4-1210-456f-9430-11c73b854b58/bin/uautomizer-verify-BQ2R08f2Ya --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 c01598788c0e593641b4d52eb46aec8832108f2ffb3b67e30286093c8a1926f8 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-29 06:09:47,859 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-29 06:09:47,925 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d381aea4-1210-456f-9430-11c73b854b58/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2023-11-29 06:09:47,929 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-29 06:09:47,930 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-29 06:09:47,953 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-29 06:09:47,954 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-29 06:09:47,954 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-29 06:09:47,955 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-29 06:09:47,956 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-29 06:09:47,956 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-29 06:09:47,957 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-29 06:09:47,958 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-29 06:09:47,958 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-29 06:09:47,959 INFO L153 SettingsManager]: * Use SBE=true [2023-11-29 06:09:47,959 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-29 06:09:47,960 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-29 06:09:47,960 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-29 06:09:47,961 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-29 06:09:47,961 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-29 06:09:47,961 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-29 06:09:47,962 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-29 06:09:47,962 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-29 06:09:47,963 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-29 06:09:47,963 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-29 06:09:47,964 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-29 06:09:47,964 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-29 06:09:47,964 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-29 06:09:47,965 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-29 06:09:47,965 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-29 06:09:47,965 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-29 06:09:47,966 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-29 06:09:47,983 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 06:09:47,983 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-29 06:09:47,983 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-29 06:09:47,984 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-29 06:09:47,984 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-29 06:09:47,984 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-29 06:09:47,984 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-29 06:09:47,985 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-29 06:09:47,985 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-29 06:09:47,985 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_d381aea4-1210-456f-9430-11c73b854b58/bin/uautomizer-verify-BQ2R08f2Ya/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d381aea4-1210-456f-9430-11c73b854b58/bin/uautomizer-verify-BQ2R08f2Ya Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c01598788c0e593641b4d52eb46aec8832108f2ffb3b67e30286093c8a1926f8 [2023-11-29 06:09:48,210 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-29 06:09:48,247 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-29 06:09:48,249 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-29 06:09:48,250 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-29 06:09:48,251 INFO L274 PluginConnector]: CDTParser initialized [2023-11-29 06:09:48,252 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d381aea4-1210-456f-9430-11c73b854b58/bin/uautomizer-verify-BQ2R08f2Ya/../../sv-benchmarks/c/array-memsafety/array01-alloca-2.i [2023-11-29 06:09:50,962 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-29 06:09:51,212 INFO L384 CDTParser]: Found 1 translation units. [2023-11-29 06:09:51,212 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d381aea4-1210-456f-9430-11c73b854b58/sv-benchmarks/c/array-memsafety/array01-alloca-2.i [2023-11-29 06:09:51,226 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d381aea4-1210-456f-9430-11c73b854b58/bin/uautomizer-verify-BQ2R08f2Ya/data/1cd69f97d/91301a532cb64734b49c450835a2c55a/FLAGb590f13f7 [2023-11-29 06:09:51,240 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d381aea4-1210-456f-9430-11c73b854b58/bin/uautomizer-verify-BQ2R08f2Ya/data/1cd69f97d/91301a532cb64734b49c450835a2c55a [2023-11-29 06:09:51,242 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-29 06:09:51,244 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-29 06:09:51,245 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-29 06:09:51,245 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-29 06:09:51,250 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-29 06:09:51,251 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 06:09:51" (1/1) ... [2023-11-29 06:09:51,252 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@26524631 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:09:51, skipping insertion in model container [2023-11-29 06:09:51,252 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 06:09:51" (1/1) ... [2023-11-29 06:09:51,295 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-29 06:09:51,537 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 06:09:51,550 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) [2023-11-29 06:09:51,550 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@3babbbda and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:09:51, skipping insertion in model container [2023-11-29 06:09:51,550 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-29 06:09:51,551 INFO L186 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2023-11-29 06:09:51,552 INFO L158 Benchmark]: Toolchain (without parser) took 307.90ms. Allocated memory is still 167.8MB. Free memory was 133.9MB in the beginning and 122.4MB in the end (delta: 11.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-11-29 06:09:51,553 INFO L158 Benchmark]: CDTParser took 0.15ms. Allocated memory is still 121.6MB. Free memory is still 95.5MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-29 06:09:51,554 INFO L158 Benchmark]: CACSL2BoogieTranslator took 305.63ms. Allocated memory is still 167.8MB. Free memory was 133.9MB in the beginning and 122.4MB in the end (delta: 11.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-11-29 06:09:51,555 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15ms. Allocated memory is still 121.6MB. Free memory is still 95.5MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 305.63ms. Allocated memory is still 167.8MB. Free memory was 133.9MB in the beginning and 122.4MB in the end (delta: 11.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 529]: Unsupported Syntax Found a cast between two array/pointer types of different sizes while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d381aea4-1210-456f-9430-11c73b854b58/bin/uautomizer-verify-BQ2R08f2Ya/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d381aea4-1210-456f-9430-11c73b854b58/bin/uautomizer-verify-BQ2R08f2Ya/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d381aea4-1210-456f-9430-11c73b854b58/bin/uautomizer-verify-BQ2R08f2Ya/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d381aea4-1210-456f-9430-11c73b854b58/bin/uautomizer-verify-BQ2R08f2Ya/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/array-memsafety/array01-alloca-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d381aea4-1210-456f-9430-11c73b854b58/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d381aea4-1210-456f-9430-11c73b854b58/bin/uautomizer-verify-BQ2R08f2Ya --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 c01598788c0e593641b4d52eb46aec8832108f2ffb3b67e30286093c8a1926f8 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-29 06:09:53,213 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-29 06:09:53,276 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d381aea4-1210-456f-9430-11c73b854b58/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2023-11-29 06:09:53,282 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-29 06:09:53,283 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-29 06:09:53,318 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-29 06:09:53,318 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-29 06:09:53,319 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-29 06:09:53,320 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-29 06:09:53,320 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-29 06:09:53,321 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-29 06:09:53,321 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-29 06:09:53,322 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-29 06:09:53,322 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-29 06:09:53,323 INFO L153 SettingsManager]: * Use SBE=true [2023-11-29 06:09:53,323 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-29 06:09:53,324 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-29 06:09:53,324 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-29 06:09:53,325 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-29 06:09:53,325 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-29 06:09:53,326 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-29 06:09:53,327 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-29 06:09:53,327 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-29 06:09:53,327 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-29 06:09:53,328 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-29 06:09:53,328 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-11-29 06:09:53,329 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-11-29 06:09:53,329 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-29 06:09:53,329 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-29 06:09:53,330 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-29 06:09:53,330 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-29 06:09:53,331 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-29 06:09:53,331 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-29 06:09:53,331 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-29 06:09:53,331 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 06:09:53,332 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-29 06:09:53,332 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-29 06:09:53,332 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-11-29 06:09:53,332 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-11-29 06:09:53,332 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-29 06:09:53,333 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-29 06:09:53,333 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-29 06:09:53,333 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-29 06:09:53,333 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-11-29 06:09:53,334 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_d381aea4-1210-456f-9430-11c73b854b58/bin/uautomizer-verify-BQ2R08f2Ya/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d381aea4-1210-456f-9430-11c73b854b58/bin/uautomizer-verify-BQ2R08f2Ya Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c01598788c0e593641b4d52eb46aec8832108f2ffb3b67e30286093c8a1926f8 [2023-11-29 06:09:53,634 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-29 06:09:53,654 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-29 06:09:53,657 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-29 06:09:53,658 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-29 06:09:53,659 INFO L274 PluginConnector]: CDTParser initialized [2023-11-29 06:09:53,660 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d381aea4-1210-456f-9430-11c73b854b58/bin/uautomizer-verify-BQ2R08f2Ya/../../sv-benchmarks/c/array-memsafety/array01-alloca-2.i [2023-11-29 06:09:56,456 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-29 06:09:56,704 INFO L384 CDTParser]: Found 1 translation units. [2023-11-29 06:09:56,705 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d381aea4-1210-456f-9430-11c73b854b58/sv-benchmarks/c/array-memsafety/array01-alloca-2.i [2023-11-29 06:09:56,720 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d381aea4-1210-456f-9430-11c73b854b58/bin/uautomizer-verify-BQ2R08f2Ya/data/65906a174/2b41eff2c2a449668dd52a711c52521d/FLAG8833301ee [2023-11-29 06:09:56,733 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d381aea4-1210-456f-9430-11c73b854b58/bin/uautomizer-verify-BQ2R08f2Ya/data/65906a174/2b41eff2c2a449668dd52a711c52521d [2023-11-29 06:09:56,735 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-29 06:09:56,736 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-29 06:09:56,737 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-29 06:09:56,738 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-29 06:09:56,742 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-29 06:09:56,742 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 06:09:56" (1/1) ... [2023-11-29 06:09:56,743 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@39e2b51d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:09:56, skipping insertion in model container [2023-11-29 06:09:56,744 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 06:09:56" (1/1) ... [2023-11-29 06:09:56,780 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-29 06:09:57,038 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 06:09:57,052 INFO L199 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2023-11-29 06:09:57,060 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-29 06:09:57,084 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 06:09:57,089 INFO L202 MainTranslator]: Completed pre-run [2023-11-29 06:09:57,120 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 06:09:57,151 INFO L206 MainTranslator]: Completed translation [2023-11-29 06:09:57,151 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:09:57 WrapperNode [2023-11-29 06:09:57,151 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-29 06:09:57,152 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-29 06:09:57,152 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-29 06:09:57,152 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-29 06:09:57,160 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:09:57" (1/1) ... [2023-11-29 06:09:57,175 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:09:57" (1/1) ... [2023-11-29 06:09:57,195 INFO L138 Inliner]: procedures = 117, calls = 9, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 57 [2023-11-29 06:09:57,196 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-29 06:09:57,196 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-29 06:09:57,196 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-29 06:09:57,197 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-29 06:09:57,207 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:09:57" (1/1) ... [2023-11-29 06:09:57,207 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:09:57" (1/1) ... [2023-11-29 06:09:57,211 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:09:57" (1/1) ... [2023-11-29 06:09:57,224 INFO L175 MemorySlicer]: Split 4 memory accesses to 1 slices as follows [4]. 100 percent of accesses are in the largest equivalence class. The 0 initializations are split as follows [0]. The 2 writes are split as follows [2]. [2023-11-29 06:09:57,224 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:09:57" (1/1) ... [2023-11-29 06:09:57,224 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:09:57" (1/1) ... [2023-11-29 06:09:57,230 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:09:57" (1/1) ... [2023-11-29 06:09:57,233 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:09:57" (1/1) ... [2023-11-29 06:09:57,235 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:09:57" (1/1) ... [2023-11-29 06:09:57,236 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:09:57" (1/1) ... [2023-11-29 06:09:57,239 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-29 06:09:57,240 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-29 06:09:57,240 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-29 06:09:57,241 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-29 06:09:57,241 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:09:57" (1/1) ... [2023-11-29 06:09:57,247 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 06:09:57,264 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d381aea4-1210-456f-9430-11c73b854b58/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:09:57,277 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d381aea4-1210-456f-9430-11c73b854b58/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-29 06:09:57,288 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d381aea4-1210-456f-9430-11c73b854b58/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-29 06:09:57,321 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#0 [2023-11-29 06:09:57,321 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-29 06:09:57,321 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-29 06:09:57,321 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#0 [2023-11-29 06:09:57,321 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-29 06:09:57,321 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-29 06:09:57,443 INFO L241 CfgBuilder]: Building ICFG [2023-11-29 06:09:57,445 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-29 06:09:57,661 INFO L282 CfgBuilder]: Performing block encoding [2023-11-29 06:09:57,693 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-29 06:09:57,693 INFO L309 CfgBuilder]: Removed 3 assume(true) statements. [2023-11-29 06:09:57,693 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 06:09:57 BoogieIcfgContainer [2023-11-29 06:09:57,694 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-29 06:09:57,696 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-29 06:09:57,696 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-29 06:09:57,699 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-29 06:09:57,700 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 06:09:56" (1/3) ... [2023-11-29 06:09:57,700 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@20cac75c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 06:09:57, skipping insertion in model container [2023-11-29 06:09:57,700 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:09:57" (2/3) ... [2023-11-29 06:09:57,701 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@20cac75c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 06:09:57, skipping insertion in model container [2023-11-29 06:09:57,701 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 06:09:57" (3/3) ... [2023-11-29 06:09:57,702 INFO L112 eAbstractionObserver]: Analyzing ICFG array01-alloca-2.i [2023-11-29 06:09:57,721 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-29 06:09:57,721 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 9 error locations. [2023-11-29 06:09:57,766 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-29 06:09:57,773 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;@27cb4c5a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-29 06:09:57,773 INFO L358 AbstractCegarLoop]: Starting to check reachability of 9 error locations. [2023-11-29 06:09:57,777 INFO L276 IsEmpty]: Start isEmpty. Operand has 24 states, 14 states have (on average 2.142857142857143) internal successors, (30), 23 states have internal predecessors, (30), 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) [2023-11-29 06:09:57,783 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2023-11-29 06:09:57,783 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:09:57,784 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2023-11-29 06:09:57,785 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 6 more)] === [2023-11-29 06:09:57,790 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:09:57,790 INFO L85 PathProgramCache]: Analyzing trace with hash 94357292, now seen corresponding path program 1 times [2023-11-29 06:09:57,802 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 06:09:57,802 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1266720798] [2023-11-29 06:09:57,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:09:57,803 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 [2023-11-29 06:09:57,803 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d381aea4-1210-456f-9430-11c73b854b58/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 06:09:57,806 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d381aea4-1210-456f-9430-11c73b854b58/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -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) [2023-11-29 06:09:57,807 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d381aea4-1210-456f-9430-11c73b854b58/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -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 [2023-11-29 06:09:57,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:09:57,876 INFO L262 TraceCheckSpWp]: Trace formula consists of 21 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-29 06:09:57,881 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:09:57,966 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 [2023-11-29 06:09:57,983 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:09:57,983 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 06:09:57,984 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 06:09:57,984 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1266720798] [2023-11-29 06:09:57,985 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1266720798] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:09:57,985 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 06:09:57,986 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 06:09:57,987 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [968720385] [2023-11-29 06:09:57,988 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:09:57,993 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 06:09:57,993 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 06:09:58,023 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 06:09:58,024 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 06:09:58,026 INFO L87 Difference]: Start difference. First operand has 24 states, 14 states have (on average 2.142857142857143) internal successors, (30), 23 states have internal predecessors, (30), 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) Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 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) [2023-11-29 06:09:58,101 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:09:58,101 INFO L93 Difference]: Finished difference Result 23 states and 26 transitions. [2023-11-29 06:09:58,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 06:09:58,105 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2023-11-29 06:09:58,105 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:09:58,113 INFO L225 Difference]: With dead ends: 23 [2023-11-29 06:09:58,113 INFO L226 Difference]: Without dead ends: 22 [2023-11-29 06:09:58,115 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 06:09:58,119 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 18 mSDsluCounter, 2 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 16 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 06:09:58,120 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 16 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 06:09:58,138 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2023-11-29 06:09:58,149 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2023-11-29 06:09:58,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 14 states have (on average 1.7857142857142858) internal successors, (25), 21 states have internal predecessors, (25), 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) [2023-11-29 06:09:58,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 25 transitions. [2023-11-29 06:09:58,152 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 25 transitions. Word has length 5 [2023-11-29 06:09:58,153 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:09:58,153 INFO L495 AbstractCegarLoop]: Abstraction has 22 states and 25 transitions. [2023-11-29 06:09:58,153 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 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) [2023-11-29 06:09:58,153 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 25 transitions. [2023-11-29 06:09:58,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2023-11-29 06:09:58,154 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:09:58,154 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2023-11-29 06:09:58,158 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d381aea4-1210-456f-9430-11c73b854b58/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -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 [2023-11-29 06:09:58,355 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d381aea4-1210-456f-9430-11c73b854b58/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 06:09:58,355 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 6 more)] === [2023-11-29 06:09:58,356 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:09:58,356 INFO L85 PathProgramCache]: Analyzing trace with hash 94357293, now seen corresponding path program 1 times [2023-11-29 06:09:58,356 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 06:09:58,356 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1034991091] [2023-11-29 06:09:58,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:09:58,357 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 [2023-11-29 06:09:58,357 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d381aea4-1210-456f-9430-11c73b854b58/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 06:09:58,358 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d381aea4-1210-456f-9430-11c73b854b58/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -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) [2023-11-29 06:09:58,359 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d381aea4-1210-456f-9430-11c73b854b58/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -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 [2023-11-29 06:09:58,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:09:58,400 INFO L262 TraceCheckSpWp]: Trace formula consists of 21 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-29 06:09:58,403 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:09:58,438 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-11-29 06:09:58,483 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:09:58,483 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 06:09:58,484 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 06:09:58,484 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1034991091] [2023-11-29 06:09:58,484 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1034991091] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:09:58,484 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 06:09:58,484 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 06:09:58,485 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1161779557] [2023-11-29 06:09:58,485 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:09:58,486 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 06:09:58,486 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 06:09:58,487 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 06:09:58,487 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 06:09:58,488 INFO L87 Difference]: Start difference. First operand 22 states and 25 transitions. Second operand has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 4 states have internal predecessors, (5), 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) [2023-11-29 06:09:58,695 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:09:58,695 INFO L93 Difference]: Finished difference Result 44 states and 49 transitions. [2023-11-29 06:09:58,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 06:09:58,696 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2023-11-29 06:09:58,697 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:09:58,698 INFO L225 Difference]: With dead ends: 44 [2023-11-29 06:09:58,698 INFO L226 Difference]: Without dead ends: 44 [2023-11-29 06:09:58,698 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-29 06:09:58,700 INFO L413 NwaCegarLoop]: 32 mSDtfsCounter, 24 mSDsluCounter, 34 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 66 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-29 06:09:58,700 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 66 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-29 06:09:58,701 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2023-11-29 06:09:58,705 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 25. [2023-11-29 06:09:58,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 17 states have (on average 1.6470588235294117) internal successors, (28), 24 states have internal predecessors, (28), 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) [2023-11-29 06:09:58,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 28 transitions. [2023-11-29 06:09:58,707 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 28 transitions. Word has length 5 [2023-11-29 06:09:58,707 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:09:58,707 INFO L495 AbstractCegarLoop]: Abstraction has 25 states and 28 transitions. [2023-11-29 06:09:58,707 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 4 states have internal predecessors, (5), 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) [2023-11-29 06:09:58,708 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 28 transitions. [2023-11-29 06:09:58,708 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2023-11-29 06:09:58,708 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:09:58,708 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2023-11-29 06:09:58,710 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d381aea4-1210-456f-9430-11c73b854b58/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -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 [2023-11-29 06:09:58,910 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d381aea4-1210-456f-9430-11c73b854b58/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 06:09:58,910 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 6 more)] === [2023-11-29 06:09:58,911 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:09:58,911 INFO L85 PathProgramCache]: Analyzing trace with hash 94416875, now seen corresponding path program 1 times [2023-11-29 06:09:58,912 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 06:09:58,912 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1207305618] [2023-11-29 06:09:58,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:09:58,913 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 [2023-11-29 06:09:58,913 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d381aea4-1210-456f-9430-11c73b854b58/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 06:09:58,914 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d381aea4-1210-456f-9430-11c73b854b58/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -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) [2023-11-29 06:09:58,915 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d381aea4-1210-456f-9430-11c73b854b58/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -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 [2023-11-29 06:09:58,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:09:58,977 INFO L262 TraceCheckSpWp]: Trace formula consists of 21 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-29 06:09:58,979 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:09:59,027 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 8 treesize of output 7 [2023-11-29 06:09:59,112 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:09:59,121 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 06:09:59,122 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 06:09:59,122 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1207305618] [2023-11-29 06:09:59,122 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1207305618] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:09:59,122 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 06:09:59,123 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 06:09:59,123 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [30789997] [2023-11-29 06:09:59,123 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:09:59,123 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 06:09:59,124 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 06:09:59,124 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 06:09:59,124 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 06:09:59,125 INFO L87 Difference]: Start difference. First operand 25 states and 28 transitions. Second operand has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 4 states have internal predecessors, (5), 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) [2023-11-29 06:09:59,281 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:09:59,281 INFO L93 Difference]: Finished difference Result 27 states and 30 transitions. [2023-11-29 06:09:59,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 06:09:59,282 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2023-11-29 06:09:59,283 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:09:59,283 INFO L225 Difference]: With dead ends: 27 [2023-11-29 06:09:59,283 INFO L226 Difference]: Without dead ends: 27 [2023-11-29 06:09:59,284 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-29 06:09:59,285 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 24 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 27 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 06:09:59,285 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 27 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 06:09:59,286 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2023-11-29 06:09:59,288 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 24. [2023-11-29 06:09:59,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 16 states have (on average 1.6875) internal successors, (27), 23 states have internal predecessors, (27), 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) [2023-11-29 06:09:59,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 27 transitions. [2023-11-29 06:09:59,289 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 27 transitions. Word has length 5 [2023-11-29 06:09:59,290 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:09:59,290 INFO L495 AbstractCegarLoop]: Abstraction has 24 states and 27 transitions. [2023-11-29 06:09:59,290 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 4 states have internal predecessors, (5), 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) [2023-11-29 06:09:59,290 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 27 transitions. [2023-11-29 06:09:59,290 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2023-11-29 06:09:59,291 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:09:59,291 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1] [2023-11-29 06:09:59,293 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d381aea4-1210-456f-9430-11c73b854b58/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Ended with exit code 0 [2023-11-29 06:09:59,492 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d381aea4-1210-456f-9430-11c73b854b58/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 06:09:59,493 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 6 more)] === [2023-11-29 06:09:59,493 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:09:59,493 INFO L85 PathProgramCache]: Analyzing trace with hash 483097798, now seen corresponding path program 1 times [2023-11-29 06:09:59,494 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 06:09:59,494 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1416742399] [2023-11-29 06:09:59,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:09:59,494 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 [2023-11-29 06:09:59,495 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d381aea4-1210-456f-9430-11c73b854b58/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 06:09:59,495 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d381aea4-1210-456f-9430-11c73b854b58/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -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) [2023-11-29 06:09:59,496 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d381aea4-1210-456f-9430-11c73b854b58/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -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 [2023-11-29 06:09:59,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:09:59,542 INFO L262 TraceCheckSpWp]: Trace formula consists of 33 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-29 06:09:59,543 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:09:59,584 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:09:59,584 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 06:09:59,639 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:09:59,640 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 06:09:59,640 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1416742399] [2023-11-29 06:09:59,640 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1416742399] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 06:09:59,640 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 06:09:59,641 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2023-11-29 06:09:59,641 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1572577358] [2023-11-29 06:09:59,641 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 06:09:59,641 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-29 06:09:59,641 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 06:09:59,642 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-29 06:09:59,642 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2023-11-29 06:09:59,643 INFO L87 Difference]: Start difference. First operand 24 states and 27 transitions. Second operand has 8 states, 8 states have (on average 1.5) internal successors, (12), 8 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:09:59,754 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:09:59,754 INFO L93 Difference]: Finished difference Result 44 states and 48 transitions. [2023-11-29 06:09:59,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-29 06:09:59,755 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 1.5) internal successors, (12), 8 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2023-11-29 06:09:59,755 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:09:59,756 INFO L225 Difference]: With dead ends: 44 [2023-11-29 06:09:59,756 INFO L226 Difference]: Without dead ends: 44 [2023-11-29 06:09:59,757 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2023-11-29 06:09:59,758 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 19 mSDsluCounter, 80 mSDsCounter, 0 mSdLazyCounter, 66 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 96 SdHoareTripleChecker+Invalid, 67 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 66 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 06:09:59,758 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 96 Invalid, 67 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 66 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 06:09:59,759 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2023-11-29 06:09:59,762 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 28. [2023-11-29 06:09:59,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 20 states have (on average 1.55) internal successors, (31), 27 states have internal predecessors, (31), 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) [2023-11-29 06:09:59,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 31 transitions. [2023-11-29 06:09:59,763 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 31 transitions. Word has length 7 [2023-11-29 06:09:59,763 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:09:59,764 INFO L495 AbstractCegarLoop]: Abstraction has 28 states and 31 transitions. [2023-11-29 06:09:59,764 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 1.5) internal successors, (12), 8 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:09:59,764 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 31 transitions. [2023-11-29 06:09:59,764 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2023-11-29 06:09:59,764 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:09:59,765 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1] [2023-11-29 06:09:59,766 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d381aea4-1210-456f-9430-11c73b854b58/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Ended with exit code 0 [2023-11-29 06:09:59,966 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d381aea4-1210-456f-9430-11c73b854b58/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 06:09:59,967 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 6 more)] === [2023-11-29 06:09:59,967 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:09:59,967 INFO L85 PathProgramCache]: Analyzing trace with hash 540356100, now seen corresponding path program 1 times [2023-11-29 06:09:59,968 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 06:09:59,968 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [263835747] [2023-11-29 06:09:59,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:09:59,968 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 [2023-11-29 06:09:59,969 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d381aea4-1210-456f-9430-11c73b854b58/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 06:09:59,969 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d381aea4-1210-456f-9430-11c73b854b58/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -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) [2023-11-29 06:09:59,971 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d381aea4-1210-456f-9430-11c73b854b58/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -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 [2023-11-29 06:10:00,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:10:00,011 INFO L262 TraceCheckSpWp]: Trace formula consists of 33 conjuncts, 11 conjunts are in the unsatisfiable core [2023-11-29 06:10:00,012 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:10:00,046 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 8 treesize of output 7 [2023-11-29 06:10:00,198 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:10:00,198 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 06:10:00,537 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:10:00,537 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 06:10:00,537 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [263835747] [2023-11-29 06:10:00,537 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [263835747] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 06:10:00,538 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 06:10:00,538 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2023-11-29 06:10:00,538 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [70455055] [2023-11-29 06:10:00,538 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 06:10:00,538 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-29 06:10:00,539 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 06:10:00,539 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-29 06:10:00,540 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2023-11-29 06:10:00,540 INFO L87 Difference]: Start difference. First operand 28 states and 31 transitions. Second operand has 10 states, 9 states have (on average 1.4444444444444444) internal successors, (13), 10 states have internal predecessors, (13), 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) [2023-11-29 06:10:01,273 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:10:01,274 INFO L93 Difference]: Finished difference Result 36 states and 42 transitions. [2023-11-29 06:10:01,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-29 06:10:01,275 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 1.4444444444444444) internal successors, (13), 10 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2023-11-29 06:10:01,275 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:10:01,276 INFO L225 Difference]: With dead ends: 36 [2023-11-29 06:10:01,277 INFO L226 Difference]: Without dead ends: 36 [2023-11-29 06:10:01,277 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=78, Invalid=132, Unknown=0, NotChecked=0, Total=210 [2023-11-29 06:10:01,278 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 35 mSDsluCounter, 38 mSDsCounter, 0 mSdLazyCounter, 80 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 54 SdHoareTripleChecker+Invalid, 83 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 80 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-29 06:10:01,279 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 54 Invalid, 83 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 80 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-29 06:10:01,279 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2023-11-29 06:10:01,282 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 34. [2023-11-29 06:10:01,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 26 states have (on average 1.5384615384615385) internal successors, (40), 33 states have internal predecessors, (40), 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) [2023-11-29 06:10:01,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 40 transitions. [2023-11-29 06:10:01,283 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 40 transitions. Word has length 7 [2023-11-29 06:10:01,284 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:10:01,284 INFO L495 AbstractCegarLoop]: Abstraction has 34 states and 40 transitions. [2023-11-29 06:10:01,284 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 1.4444444444444444) internal successors, (13), 10 states have internal predecessors, (13), 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) [2023-11-29 06:10:01,284 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 40 transitions. [2023-11-29 06:10:01,285 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2023-11-29 06:10:01,285 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:10:01,285 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:10:01,287 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d381aea4-1210-456f-9430-11c73b854b58/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -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 [2023-11-29 06:10:01,485 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d381aea4-1210-456f-9430-11c73b854b58/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 06:10:01,486 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 6 more)] === [2023-11-29 06:10:01,486 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:10:01,486 INFO L85 PathProgramCache]: Analyzing trace with hash 400464181, now seen corresponding path program 1 times [2023-11-29 06:10:01,486 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 06:10:01,487 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [413089595] [2023-11-29 06:10:01,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:10:01,487 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 [2023-11-29 06:10:01,487 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d381aea4-1210-456f-9430-11c73b854b58/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 06:10:01,488 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d381aea4-1210-456f-9430-11c73b854b58/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -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) [2023-11-29 06:10:01,489 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d381aea4-1210-456f-9430-11c73b854b58/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -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 [2023-11-29 06:10:01,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:10:01,524 INFO L262 TraceCheckSpWp]: Trace formula consists of 42 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-29 06:10:01,525 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:10:01,529 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 [2023-11-29 06:10:01,549 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 06:10:01,549 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 06:10:01,549 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 06:10:01,549 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [413089595] [2023-11-29 06:10:01,549 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [413089595] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:10:01,550 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 06:10:01,550 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 06:10:01,550 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1167342346] [2023-11-29 06:10:01,550 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:10:01,550 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 06:10:01,551 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 06:10:01,551 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 06:10:01,551 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 06:10:01,551 INFO L87 Difference]: Start difference. First operand 34 states and 40 transitions. Second operand has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 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) [2023-11-29 06:10:01,637 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:10:01,637 INFO L93 Difference]: Finished difference Result 31 states and 37 transitions. [2023-11-29 06:10:01,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 06:10:01,638 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2023-11-29 06:10:01,638 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:10:01,639 INFO L225 Difference]: With dead ends: 31 [2023-11-29 06:10:01,639 INFO L226 Difference]: Without dead ends: 31 [2023-11-29 06:10:01,639 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-29 06:10:01,640 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 23 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 17 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 06:10:01,640 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 17 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 06:10:01,640 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2023-11-29 06:10:01,642 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2023-11-29 06:10:01,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 26 states have (on average 1.4230769230769231) internal successors, (37), 30 states have internal predecessors, (37), 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) [2023-11-29 06:10:01,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 37 transitions. [2023-11-29 06:10:01,643 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 37 transitions. Word has length 9 [2023-11-29 06:10:01,643 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:10:01,643 INFO L495 AbstractCegarLoop]: Abstraction has 31 states and 37 transitions. [2023-11-29 06:10:01,644 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 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) [2023-11-29 06:10:01,644 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 37 transitions. [2023-11-29 06:10:01,644 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2023-11-29 06:10:01,644 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:10:01,644 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:10:01,646 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d381aea4-1210-456f-9430-11c73b854b58/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Ended with exit code 0 [2023-11-29 06:10:01,844 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d381aea4-1210-456f-9430-11c73b854b58/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 06:10:01,845 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 6 more)] === [2023-11-29 06:10:01,845 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:10:01,845 INFO L85 PathProgramCache]: Analyzing trace with hash 400464182, now seen corresponding path program 1 times [2023-11-29 06:10:01,845 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 06:10:01,845 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [998566073] [2023-11-29 06:10:01,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:10:01,846 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 [2023-11-29 06:10:01,846 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d381aea4-1210-456f-9430-11c73b854b58/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 06:10:01,847 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d381aea4-1210-456f-9430-11c73b854b58/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -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) [2023-11-29 06:10:01,847 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d381aea4-1210-456f-9430-11c73b854b58/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -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 [2023-11-29 06:10:01,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:10:01,903 INFO L262 TraceCheckSpWp]: Trace formula consists of 42 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-29 06:10:01,905 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:10:01,921 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-11-29 06:10:01,990 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 06:10:01,990 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 06:10:01,990 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 06:10:01,991 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [998566073] [2023-11-29 06:10:01,991 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [998566073] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:10:01,991 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 06:10:01,991 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 06:10:01,991 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1106636142] [2023-11-29 06:10:01,991 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:10:01,992 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 06:10:01,992 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 06:10:01,992 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 06:10:01,993 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-29 06:10:01,993 INFO L87 Difference]: Start difference. First operand 31 states and 37 transitions. Second operand has 5 states, 4 states have (on average 2.25) internal successors, (9), 5 states have internal predecessors, (9), 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) [2023-11-29 06:10:02,213 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:10:02,214 INFO L93 Difference]: Finished difference Result 51 states and 60 transitions. [2023-11-29 06:10:02,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 06:10:02,215 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.25) internal successors, (9), 5 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2023-11-29 06:10:02,215 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:10:02,216 INFO L225 Difference]: With dead ends: 51 [2023-11-29 06:10:02,216 INFO L226 Difference]: Without dead ends: 51 [2023-11-29 06:10:02,216 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-11-29 06:10:02,217 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 56 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 37 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-29 06:10:02,217 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [56 Valid, 37 Invalid, 65 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 63 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-29 06:10:02,218 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2023-11-29 06:10:02,221 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 37. [2023-11-29 06:10:02,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 32 states have (on average 1.40625) internal successors, (45), 36 states have internal predecessors, (45), 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) [2023-11-29 06:10:02,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 45 transitions. [2023-11-29 06:10:02,222 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 45 transitions. Word has length 9 [2023-11-29 06:10:02,222 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:10:02,222 INFO L495 AbstractCegarLoop]: Abstraction has 37 states and 45 transitions. [2023-11-29 06:10:02,222 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.25) internal successors, (9), 5 states have internal predecessors, (9), 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) [2023-11-29 06:10:02,223 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 45 transitions. [2023-11-29 06:10:02,223 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2023-11-29 06:10:02,223 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:10:02,223 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:10:02,225 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d381aea4-1210-456f-9430-11c73b854b58/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Ended with exit code 0 [2023-11-29 06:10:02,424 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d381aea4-1210-456f-9430-11c73b854b58/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 06:10:02,424 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 6 more)] === [2023-11-29 06:10:02,424 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:10:02,424 INFO L85 PathProgramCache]: Analyzing trace with hash -408882444, now seen corresponding path program 1 times [2023-11-29 06:10:02,425 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 06:10:02,425 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1659730178] [2023-11-29 06:10:02,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:10:02,425 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 [2023-11-29 06:10:02,425 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d381aea4-1210-456f-9430-11c73b854b58/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 06:10:02,426 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d381aea4-1210-456f-9430-11c73b854b58/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -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) [2023-11-29 06:10:02,427 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d381aea4-1210-456f-9430-11c73b854b58/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -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 [2023-11-29 06:10:02,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:10:02,469 INFO L262 TraceCheckSpWp]: Trace formula consists of 42 conjuncts, 14 conjunts are in the unsatisfiable core [2023-11-29 06:10:02,475 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:10:02,501 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 8 treesize of output 7 [2023-11-29 06:10:02,684 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:10:02,684 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 06:10:03,003 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:10:03,003 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 06:10:03,004 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1659730178] [2023-11-29 06:10:03,004 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1659730178] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-29 06:10:03,004 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 06:10:03,004 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 8 [2023-11-29 06:10:03,004 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [465541645] [2023-11-29 06:10:03,004 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:10:03,005 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 06:10:03,005 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 06:10:03,005 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 06:10:03,005 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2023-11-29 06:10:03,006 INFO L87 Difference]: Start difference. First operand 37 states and 45 transitions. Second operand has 5 states, 4 states have (on average 2.25) internal successors, (9), 5 states have internal predecessors, (9), 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) [2023-11-29 06:10:03,286 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:10:03,286 INFO L93 Difference]: Finished difference Result 38 states and 47 transitions. [2023-11-29 06:10:03,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 06:10:03,287 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.25) internal successors, (9), 5 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2023-11-29 06:10:03,287 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:10:03,288 INFO L225 Difference]: With dead ends: 38 [2023-11-29 06:10:03,288 INFO L226 Difference]: Without dead ends: 38 [2023-11-29 06:10:03,288 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2023-11-29 06:10:03,289 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 24 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 17 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-29 06:10:03,289 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 17 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-29 06:10:03,290 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2023-11-29 06:10:03,291 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 31. [2023-11-29 06:10:03,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 28 states have (on average 1.3571428571428572) internal successors, (38), 30 states have internal predecessors, (38), 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) [2023-11-29 06:10:03,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 38 transitions. [2023-11-29 06:10:03,292 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 38 transitions. Word has length 9 [2023-11-29 06:10:03,292 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:10:03,292 INFO L495 AbstractCegarLoop]: Abstraction has 31 states and 38 transitions. [2023-11-29 06:10:03,292 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.25) internal successors, (9), 5 states have internal predecessors, (9), 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) [2023-11-29 06:10:03,293 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 38 transitions. [2023-11-29 06:10:03,293 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2023-11-29 06:10:03,293 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:10:03,293 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:10:03,295 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d381aea4-1210-456f-9430-11c73b854b58/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -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 [2023-11-29 06:10:03,494 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d381aea4-1210-456f-9430-11c73b854b58/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 06:10:03,494 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 6 more)] === [2023-11-29 06:10:03,495 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:10:03,495 INFO L85 PathProgramCache]: Analyzing trace with hash -470513140, now seen corresponding path program 1 times [2023-11-29 06:10:03,495 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 06:10:03,495 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [779434519] [2023-11-29 06:10:03,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:10:03,495 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 [2023-11-29 06:10:03,495 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d381aea4-1210-456f-9430-11c73b854b58/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 06:10:03,496 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d381aea4-1210-456f-9430-11c73b854b58/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -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) [2023-11-29 06:10:03,497 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d381aea4-1210-456f-9430-11c73b854b58/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -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 [2023-11-29 06:10:03,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:10:03,529 INFO L262 TraceCheckSpWp]: Trace formula consists of 45 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-29 06:10:03,530 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:10:03,554 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 06:10:03,554 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 06:10:03,555 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 06:10:03,555 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [779434519] [2023-11-29 06:10:03,555 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [779434519] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:10:03,555 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 06:10:03,555 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 06:10:03,555 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [845643645] [2023-11-29 06:10:03,555 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:10:03,556 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 06:10:03,556 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 06:10:03,556 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 06:10:03,557 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 06:10:03,557 INFO L87 Difference]: Start difference. First operand 31 states and 38 transitions. Second operand has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 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) [2023-11-29 06:10:03,667 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:10:03,667 INFO L93 Difference]: Finished difference Result 49 states and 58 transitions. [2023-11-29 06:10:03,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 06:10:03,668 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2023-11-29 06:10:03,668 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:10:03,669 INFO L225 Difference]: With dead ends: 49 [2023-11-29 06:10:03,669 INFO L226 Difference]: Without dead ends: 49 [2023-11-29 06:10:03,669 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-29 06:10:03,670 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 25 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 28 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 06:10:03,671 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 28 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 06:10:03,671 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2023-11-29 06:10:03,673 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 33. [2023-11-29 06:10:03,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 30 states have (on average 1.3333333333333333) internal successors, (40), 32 states have internal predecessors, (40), 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) [2023-11-29 06:10:03,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 40 transitions. [2023-11-29 06:10:03,674 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 40 transitions. Word has length 10 [2023-11-29 06:10:03,675 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:10:03,675 INFO L495 AbstractCegarLoop]: Abstraction has 33 states and 40 transitions. [2023-11-29 06:10:03,675 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 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) [2023-11-29 06:10:03,675 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 40 transitions. [2023-11-29 06:10:03,675 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2023-11-29 06:10:03,675 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:10:03,676 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:10:03,678 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d381aea4-1210-456f-9430-11c73b854b58/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Ended with exit code 0 [2023-11-29 06:10:03,876 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d381aea4-1210-456f-9430-11c73b854b58/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 06:10:03,876 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 6 more)] === [2023-11-29 06:10:03,877 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:10:03,877 INFO L85 PathProgramCache]: Analyzing trace with hash 209545230, now seen corresponding path program 1 times [2023-11-29 06:10:03,877 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 06:10:03,877 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1441564760] [2023-11-29 06:10:03,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:10:03,877 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 [2023-11-29 06:10:03,877 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d381aea4-1210-456f-9430-11c73b854b58/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 06:10:03,878 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d381aea4-1210-456f-9430-11c73b854b58/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -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) [2023-11-29 06:10:03,879 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d381aea4-1210-456f-9430-11c73b854b58/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -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 [2023-11-29 06:10:03,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:10:03,918 INFO L262 TraceCheckSpWp]: Trace formula consists of 45 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-29 06:10:03,918 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:10:03,999 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:10:03,999 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 06:10:04,082 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:10:04,082 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 06:10:04,082 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1441564760] [2023-11-29 06:10:04,083 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1441564760] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 06:10:04,083 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 06:10:04,083 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6] total 11 [2023-11-29 06:10:04,083 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1238138276] [2023-11-29 06:10:04,083 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 06:10:04,083 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-29 06:10:04,083 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 06:10:04,084 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-29 06:10:04,084 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2023-11-29 06:10:04,084 INFO L87 Difference]: Start difference. First operand 33 states and 40 transitions. Second operand has 11 states, 11 states have (on average 1.5454545454545454) internal successors, (17), 11 states have internal predecessors, (17), 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) [2023-11-29 06:10:04,346 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:10:04,346 INFO L93 Difference]: Finished difference Result 51 states and 59 transitions. [2023-11-29 06:10:04,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-29 06:10:04,347 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 1.5454545454545454) internal successors, (17), 11 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2023-11-29 06:10:04,347 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:10:04,347 INFO L225 Difference]: With dead ends: 51 [2023-11-29 06:10:04,348 INFO L226 Difference]: Without dead ends: 51 [2023-11-29 06:10:04,348 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=80, Invalid=160, Unknown=0, NotChecked=0, Total=240 [2023-11-29 06:10:04,348 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 102 mSDsluCounter, 25 mSDsCounter, 0 mSdLazyCounter, 94 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 102 SdHoareTripleChecker+Valid, 32 SdHoareTripleChecker+Invalid, 99 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 94 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-29 06:10:04,349 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [102 Valid, 32 Invalid, 99 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 94 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-29 06:10:04,349 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2023-11-29 06:10:04,351 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 31. [2023-11-29 06:10:04,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 28 states have (on average 1.3214285714285714) internal successors, (37), 30 states have internal predecessors, (37), 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) [2023-11-29 06:10:04,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 37 transitions. [2023-11-29 06:10:04,352 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 37 transitions. Word has length 10 [2023-11-29 06:10:04,352 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:10:04,353 INFO L495 AbstractCegarLoop]: Abstraction has 31 states and 37 transitions. [2023-11-29 06:10:04,353 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 1.5454545454545454) internal successors, (17), 11 states have internal predecessors, (17), 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) [2023-11-29 06:10:04,353 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 37 transitions. [2023-11-29 06:10:04,353 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2023-11-29 06:10:04,354 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:10:04,354 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:10:04,355 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d381aea4-1210-456f-9430-11c73b854b58/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -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)] Ended with exit code 0 [2023-11-29 06:10:04,554 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d381aea4-1210-456f-9430-11c73b854b58/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 06:10:04,554 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 6 more)] === [2023-11-29 06:10:04,555 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:10:04,555 INFO L85 PathProgramCache]: Analyzing trace with hash 1742484937, now seen corresponding path program 1 times [2023-11-29 06:10:04,555 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 06:10:04,555 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [606787493] [2023-11-29 06:10:04,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:10:04,555 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 [2023-11-29 06:10:04,555 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d381aea4-1210-456f-9430-11c73b854b58/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 06:10:04,556 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d381aea4-1210-456f-9430-11c73b854b58/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -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) [2023-11-29 06:10:04,557 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d381aea4-1210-456f-9430-11c73b854b58/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -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 [2023-11-29 06:10:04,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:10:04,599 INFO L262 TraceCheckSpWp]: Trace formula consists of 50 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-29 06:10:04,599 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:10:04,643 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 06:10:04,643 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 06:10:04,707 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 06:10:04,707 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 06:10:04,707 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [606787493] [2023-11-29 06:10:04,707 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [606787493] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 06:10:04,707 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 06:10:04,708 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2023-11-29 06:10:04,708 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1345339170] [2023-11-29 06:10:04,708 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 06:10:04,708 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-29 06:10:04,708 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 06:10:04,709 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-29 06:10:04,709 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-11-29 06:10:04,709 INFO L87 Difference]: Start difference. First operand 31 states and 37 transitions. Second operand has 8 states, 8 states have (on average 3.0) internal successors, (24), 8 states have internal predecessors, (24), 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) [2023-11-29 06:10:04,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:10:04,835 INFO L93 Difference]: Finished difference Result 42 states and 48 transitions. [2023-11-29 06:10:04,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-29 06:10:04,835 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 3.0) internal successors, (24), 8 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2023-11-29 06:10:04,836 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:10:04,836 INFO L225 Difference]: With dead ends: 42 [2023-11-29 06:10:04,836 INFO L226 Difference]: Without dead ends: 42 [2023-11-29 06:10:04,836 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2023-11-29 06:10:04,837 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 30 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 30 SdHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 57 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 06:10:04,837 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 30 Invalid, 58 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 57 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 06:10:04,837 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2023-11-29 06:10:04,839 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 39. [2023-11-29 06:10:04,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 36 states have (on average 1.2777777777777777) internal successors, (46), 38 states have internal predecessors, (46), 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) [2023-11-29 06:10:04,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 46 transitions. [2023-11-29 06:10:04,839 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 46 transitions. Word has length 13 [2023-11-29 06:10:04,840 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:10:04,840 INFO L495 AbstractCegarLoop]: Abstraction has 39 states and 46 transitions. [2023-11-29 06:10:04,840 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 3.0) internal successors, (24), 8 states have internal predecessors, (24), 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) [2023-11-29 06:10:04,840 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 46 transitions. [2023-11-29 06:10:04,840 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2023-11-29 06:10:04,840 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:10:04,841 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 1, 1, 1, 1] [2023-11-29 06:10:04,842 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d381aea4-1210-456f-9430-11c73b854b58/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -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)] Ended with exit code 0 [2023-11-29 06:10:05,041 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d381aea4-1210-456f-9430-11c73b854b58/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 06:10:05,041 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 6 more)] === [2023-11-29 06:10:05,042 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:10:05,042 INFO L85 PathProgramCache]: Analyzing trace with hash -530441521, now seen corresponding path program 2 times [2023-11-29 06:10:05,042 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 06:10:05,042 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [842353269] [2023-11-29 06:10:05,042 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 06:10:05,042 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 [2023-11-29 06:10:05,042 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d381aea4-1210-456f-9430-11c73b854b58/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 06:10:05,043 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d381aea4-1210-456f-9430-11c73b854b58/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -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) [2023-11-29 06:10:05,044 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d381aea4-1210-456f-9430-11c73b854b58/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -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 [2023-11-29 06:10:05,089 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-29 06:10:05,089 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 06:10:05,092 INFO L262 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 14 conjunts are in the unsatisfiable core [2023-11-29 06:10:05,094 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:10:05,107 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 8 treesize of output 7 [2023-11-29 06:10:05,368 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:10:05,368 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 06:10:06,247 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:10:06,247 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 06:10:06,247 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [842353269] [2023-11-29 06:10:06,248 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [842353269] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 06:10:06,248 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 06:10:06,248 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2023-11-29 06:10:06,248 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1203009293] [2023-11-29 06:10:06,248 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 06:10:06,248 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-11-29 06:10:06,249 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 06:10:06,249 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-11-29 06:10:06,249 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=172, Unknown=0, NotChecked=0, Total=240 [2023-11-29 06:10:06,250 INFO L87 Difference]: Start difference. First operand 39 states and 46 transitions. Second operand has 16 states, 15 states have (on average 1.6666666666666667) internal successors, (25), 16 states have internal predecessors, (25), 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) [2023-11-29 06:10:09,244 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:10:09,244 INFO L93 Difference]: Finished difference Result 59 states and 72 transitions. [2023-11-29 06:10:09,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2023-11-29 06:10:09,245 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 1.6666666666666667) internal successors, (25), 16 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2023-11-29 06:10:09,245 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:10:09,246 INFO L225 Difference]: With dead ends: 59 [2023-11-29 06:10:09,246 INFO L226 Difference]: Without dead ends: 59 [2023-11-29 06:10:09,247 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 190 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=309, Invalid=621, Unknown=0, NotChecked=0, Total=930 [2023-11-29 06:10:09,247 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 68 mSDsluCounter, 44 mSDsCounter, 0 mSdLazyCounter, 204 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 68 SdHoareTripleChecker+Valid, 55 SdHoareTripleChecker+Invalid, 207 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 204 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-11-29 06:10:09,248 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [68 Valid, 55 Invalid, 207 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 204 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-11-29 06:10:09,248 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2023-11-29 06:10:09,251 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 51. [2023-11-29 06:10:09,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 48 states have (on average 1.3333333333333333) internal successors, (64), 50 states have internal predecessors, (64), 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) [2023-11-29 06:10:09,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 64 transitions. [2023-11-29 06:10:09,252 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 64 transitions. Word has length 13 [2023-11-29 06:10:09,252 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:10:09,252 INFO L495 AbstractCegarLoop]: Abstraction has 51 states and 64 transitions. [2023-11-29 06:10:09,252 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 1.6666666666666667) internal successors, (25), 16 states have internal predecessors, (25), 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) [2023-11-29 06:10:09,252 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 64 transitions. [2023-11-29 06:10:09,253 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2023-11-29 06:10:09,253 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:10:09,253 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:10:09,256 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d381aea4-1210-456f-9430-11c73b854b58/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -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 [2023-11-29 06:10:09,454 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d381aea4-1210-456f-9430-11c73b854b58/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 06:10:09,454 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 6 more)] === [2023-11-29 06:10:09,454 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:10:09,455 INFO L85 PathProgramCache]: Analyzing trace with hash 2000650375, now seen corresponding path program 1 times [2023-11-29 06:10:09,455 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 06:10:09,455 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [805635654] [2023-11-29 06:10:09,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:10:09,455 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 [2023-11-29 06:10:09,455 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d381aea4-1210-456f-9430-11c73b854b58/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 06:10:09,456 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d381aea4-1210-456f-9430-11c73b854b58/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -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) [2023-11-29 06:10:09,457 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d381aea4-1210-456f-9430-11c73b854b58/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -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 [2023-11-29 06:10:09,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:10:09,499 INFO L262 TraceCheckSpWp]: Trace formula consists of 50 conjuncts, 17 conjunts are in the unsatisfiable core [2023-11-29 06:10:09,501 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:10:09,521 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 8 treesize of output 7 [2023-11-29 06:10:09,749 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 06:10:09,750 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 06:10:10,233 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 06:10:10,233 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 06:10:10,234 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [805635654] [2023-11-29 06:10:10,234 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [805635654] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 06:10:10,234 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 06:10:10,234 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2023-11-29 06:10:10,234 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [945868873] [2023-11-29 06:10:10,234 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 06:10:10,235 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-29 06:10:10,235 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 06:10:10,235 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-29 06:10:10,235 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2023-11-29 06:10:10,236 INFO L87 Difference]: Start difference. First operand 51 states and 64 transitions. Second operand has 12 states, 11 states have (on average 2.272727272727273) internal successors, (25), 12 states have internal predecessors, (25), 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) [2023-11-29 06:10:11,205 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:10:11,205 INFO L93 Difference]: Finished difference Result 74 states and 93 transitions. [2023-11-29 06:10:11,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-29 06:10:11,206 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 2.272727272727273) internal successors, (25), 12 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2023-11-29 06:10:11,207 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:10:11,207 INFO L225 Difference]: With dead ends: 74 [2023-11-29 06:10:11,207 INFO L226 Difference]: Without dead ends: 74 [2023-11-29 06:10:11,208 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=124, Invalid=256, Unknown=0, NotChecked=0, Total=380 [2023-11-29 06:10:11,208 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 117 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 98 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 117 SdHoareTripleChecker+Valid, 30 SdHoareTripleChecker+Invalid, 104 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 98 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-29 06:10:11,209 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [117 Valid, 30 Invalid, 104 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 98 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-29 06:10:11,209 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2023-11-29 06:10:11,212 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 69. [2023-11-29 06:10:11,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69 states, 66 states have (on average 1.3333333333333333) internal successors, (88), 68 states have internal predecessors, (88), 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) [2023-11-29 06:10:11,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 88 transitions. [2023-11-29 06:10:11,214 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 88 transitions. Word has length 13 [2023-11-29 06:10:11,214 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:10:11,214 INFO L495 AbstractCegarLoop]: Abstraction has 69 states and 88 transitions. [2023-11-29 06:10:11,214 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 2.272727272727273) internal successors, (25), 12 states have internal predecessors, (25), 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) [2023-11-29 06:10:11,214 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 88 transitions. [2023-11-29 06:10:11,215 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2023-11-29 06:10:11,215 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:10:11,215 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:10:11,217 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d381aea4-1210-456f-9430-11c73b854b58/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -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)] Ended with exit code 0 [2023-11-29 06:10:11,415 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d381aea4-1210-456f-9430-11c73b854b58/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 06:10:11,416 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 6 more)] === [2023-11-29 06:10:11,416 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:10:11,416 INFO L85 PathProgramCache]: Analyzing trace with hash -1817542695, now seen corresponding path program 1 times [2023-11-29 06:10:11,416 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 06:10:11,416 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1655417795] [2023-11-29 06:10:11,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:10:11,417 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 [2023-11-29 06:10:11,417 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d381aea4-1210-456f-9430-11c73b854b58/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 06:10:11,418 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d381aea4-1210-456f-9430-11c73b854b58/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -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) [2023-11-29 06:10:11,418 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d381aea4-1210-456f-9430-11c73b854b58/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -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 [2023-11-29 06:10:11,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:10:11,471 INFO L262 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-29 06:10:11,472 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:10:11,543 WARN L876 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_main_#t~malloc8#1.base_21| (_ BitVec 32))) (and (= (_ bv0 1) (select |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_#t~malloc8#1.base_21|)) (= (store |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_#t~malloc8#1.base_21| (_ bv0 1)) |c_#valid|))) is different from true [2023-11-29 06:10:11,543 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-29 06:10:11,543 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 06:10:11,544 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 06:10:11,544 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1655417795] [2023-11-29 06:10:11,544 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1655417795] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:10:11,544 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 06:10:11,544 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 06:10:11,544 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1870524259] [2023-11-29 06:10:11,544 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:10:11,544 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 06:10:11,545 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 06:10:11,545 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 06:10:11,545 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=8, Unknown=1, NotChecked=4, Total=20 [2023-11-29 06:10:11,545 INFO L87 Difference]: Start difference. First operand 69 states and 88 transitions. Second operand has 5 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 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) [2023-11-29 06:10:11,601 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:10:11,601 INFO L93 Difference]: Finished difference Result 68 states and 87 transitions. [2023-11-29 06:10:11,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 06:10:11,601 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2023-11-29 06:10:11,601 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:10:11,602 INFO L225 Difference]: With dead ends: 68 [2023-11-29 06:10:11,602 INFO L226 Difference]: Without dead ends: 54 [2023-11-29 06:10:11,602 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=13, Unknown=1, NotChecked=6, Total=30 [2023-11-29 06:10:11,602 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 6 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 24 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 18 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 06:10:11,603 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 24 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 14 Invalid, 0 Unknown, 18 Unchecked, 0.0s Time] [2023-11-29 06:10:11,603 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2023-11-29 06:10:11,606 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 54. [2023-11-29 06:10:11,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 52 states have (on average 1.3076923076923077) internal successors, (68), 53 states have internal predecessors, (68), 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) [2023-11-29 06:10:11,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 68 transitions. [2023-11-29 06:10:11,607 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 68 transitions. Word has length 14 [2023-11-29 06:10:11,607 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:10:11,607 INFO L495 AbstractCegarLoop]: Abstraction has 54 states and 68 transitions. [2023-11-29 06:10:11,607 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 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) [2023-11-29 06:10:11,608 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 68 transitions. [2023-11-29 06:10:11,608 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2023-11-29 06:10:11,609 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:10:11,609 INFO L195 NwaCegarLoop]: trace histogram [11, 10, 1, 1, 1, 1] [2023-11-29 06:10:11,611 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d381aea4-1210-456f-9430-11c73b854b58/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -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)] Ended with exit code 0 [2023-11-29 06:10:11,811 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d381aea4-1210-456f-9430-11c73b854b58/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 06:10:11,812 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 6 more)] === [2023-11-29 06:10:11,812 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:10:11,812 INFO L85 PathProgramCache]: Analyzing trace with hash -892332123, now seen corresponding path program 3 times [2023-11-29 06:10:11,812 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 06:10:11,812 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1921737195] [2023-11-29 06:10:11,812 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-29 06:10:11,813 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 [2023-11-29 06:10:11,813 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d381aea4-1210-456f-9430-11c73b854b58/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 06:10:11,814 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d381aea4-1210-456f-9430-11c73b854b58/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -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) [2023-11-29 06:10:11,814 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d381aea4-1210-456f-9430-11c73b854b58/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -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 [2023-11-29 06:10:12,051 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2023-11-29 06:10:12,051 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 06:10:12,056 INFO L262 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 20 conjunts are in the unsatisfiable core [2023-11-29 06:10:12,058 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:10:12,072 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 8 treesize of output 7 [2023-11-29 06:10:12,651 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 0 proven. 110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:10:12,651 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 06:10:15,216 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 0 proven. 110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:10:15,216 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 06:10:15,217 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1921737195] [2023-11-29 06:10:15,217 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1921737195] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 06:10:15,217 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 06:10:15,217 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 27 [2023-11-29 06:10:15,217 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1364077739] [2023-11-29 06:10:15,217 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 06:10:15,218 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2023-11-29 06:10:15,218 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 06:10:15,218 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2023-11-29 06:10:15,219 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=200, Invalid=556, Unknown=0, NotChecked=0, Total=756 [2023-11-29 06:10:15,219 INFO L87 Difference]: Start difference. First operand 54 states and 68 transitions. Second operand has 28 states, 27 states have (on average 1.8148148148148149) internal successors, (49), 28 states have internal predecessors, (49), 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) [2023-11-29 06:10:40,219 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:10:40,219 INFO L93 Difference]: Finished difference Result 98 states and 124 transitions. [2023-11-29 06:10:40,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2023-11-29 06:10:40,220 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 27 states have (on average 1.8148148148148149) internal successors, (49), 28 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2023-11-29 06:10:40,221 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:10:40,221 INFO L225 Difference]: With dead ends: 98 [2023-11-29 06:10:40,221 INFO L226 Difference]: Without dead ends: 98 [2023-11-29 06:10:40,223 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 880 ImplicationChecksByTransitivity, 25.0s TimeCoverageRelationStatistics Valid=1158, Invalid=2502, Unknown=0, NotChecked=0, Total=3660 [2023-11-29 06:10:40,224 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 239 mSDsluCounter, 54 mSDsCounter, 0 mSdLazyCounter, 685 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 239 SdHoareTripleChecker+Valid, 62 SdHoareTripleChecker+Invalid, 687 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 685 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2023-11-29 06:10:40,224 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [239 Valid, 62 Invalid, 687 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 685 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2023-11-29 06:10:40,225 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2023-11-29 06:10:40,228 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 78. [2023-11-29 06:10:40,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78 states, 76 states have (on average 1.368421052631579) internal successors, (104), 77 states have internal predecessors, (104), 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) [2023-11-29 06:10:40,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 104 transitions. [2023-11-29 06:10:40,229 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 104 transitions. Word has length 25 [2023-11-29 06:10:40,229 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:10:40,230 INFO L495 AbstractCegarLoop]: Abstraction has 78 states and 104 transitions. [2023-11-29 06:10:40,230 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 27 states have (on average 1.8148148148148149) internal successors, (49), 28 states have internal predecessors, (49), 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) [2023-11-29 06:10:40,230 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 104 transitions. [2023-11-29 06:10:40,231 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2023-11-29 06:10:40,231 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:10:40,231 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:10:40,234 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d381aea4-1210-456f-9430-11c73b854b58/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -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 [2023-11-29 06:10:40,432 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d381aea4-1210-456f-9430-11c73b854b58/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 06:10:40,432 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 6 more)] === [2023-11-29 06:10:40,432 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:10:40,432 INFO L85 PathProgramCache]: Analyzing trace with hash -345759680, now seen corresponding path program 2 times [2023-11-29 06:10:40,432 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 06:10:40,433 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1424338629] [2023-11-29 06:10:40,433 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 06:10:40,433 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 [2023-11-29 06:10:40,433 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d381aea4-1210-456f-9430-11c73b854b58/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 06:10:40,434 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d381aea4-1210-456f-9430-11c73b854b58/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -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) [2023-11-29 06:10:40,434 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d381aea4-1210-456f-9430-11c73b854b58/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -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 [2023-11-29 06:10:40,494 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-29 06:10:40,494 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 06:10:40,497 INFO L262 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 20 conjunts are in the unsatisfiable core [2023-11-29 06:10:40,499 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:10:40,510 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 8 treesize of output 7 [2023-11-29 06:10:40,957 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 14 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:10:40,957 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 06:10:42,697 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 33 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:10:42,698 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 06:10:42,698 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1424338629] [2023-11-29 06:10:42,698 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1424338629] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 06:10:42,698 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 06:10:42,698 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 11] total 20 [2023-11-29 06:10:42,698 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [604197162] [2023-11-29 06:10:42,699 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 06:10:42,699 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-11-29 06:10:42,699 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 06:10:42,700 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-11-29 06:10:42,700 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=313, Unknown=0, NotChecked=0, Total=380 [2023-11-29 06:10:42,700 INFO L87 Difference]: Start difference. First operand 78 states and 104 transitions. Second operand has 20 states, 20 states have (on average 2.45) internal successors, (49), 20 states have internal predecessors, (49), 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) [2023-11-29 06:10:46,859 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:10:46,859 INFO L93 Difference]: Finished difference Result 131 states and 162 transitions. [2023-11-29 06:10:46,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-11-29 06:10:46,861 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 2.45) internal successors, (49), 20 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2023-11-29 06:10:46,861 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:10:46,862 INFO L225 Difference]: With dead ends: 131 [2023-11-29 06:10:46,862 INFO L226 Difference]: Without dead ends: 121 [2023-11-29 06:10:46,863 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 163 ImplicationChecksByTransitivity, 4.1s TimeCoverageRelationStatistics Valid=289, Invalid=1043, Unknown=0, NotChecked=0, Total=1332 [2023-11-29 06:10:46,863 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 205 mSDsluCounter, 60 mSDsCounter, 0 mSdLazyCounter, 320 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 205 SdHoareTripleChecker+Valid, 66 SdHoareTripleChecker+Invalid, 326 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 320 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2023-11-29 06:10:46,864 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [205 Valid, 66 Invalid, 326 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 320 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-11-29 06:10:46,864 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states. [2023-11-29 06:10:46,867 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 85. [2023-11-29 06:10:46,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 85 states, 83 states have (on average 1.3373493975903614) internal successors, (111), 84 states have internal predecessors, (111), 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) [2023-11-29 06:10:46,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 111 transitions. [2023-11-29 06:10:46,868 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 111 transitions. Word has length 25 [2023-11-29 06:10:46,868 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:10:46,868 INFO L495 AbstractCegarLoop]: Abstraction has 85 states and 111 transitions. [2023-11-29 06:10:46,868 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 2.45) internal successors, (49), 20 states have internal predecessors, (49), 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) [2023-11-29 06:10:46,868 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 111 transitions. [2023-11-29 06:10:46,869 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2023-11-29 06:10:46,870 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:10:46,870 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1] [2023-11-29 06:10:46,872 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d381aea4-1210-456f-9430-11c73b854b58/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -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 [2023-11-29 06:10:47,070 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d381aea4-1210-456f-9430-11c73b854b58/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 06:10:47,070 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 6 more)] === [2023-11-29 06:10:47,071 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:10:47,071 INFO L85 PathProgramCache]: Analyzing trace with hash -1597403061, now seen corresponding path program 3 times [2023-11-29 06:10:47,071 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 06:10:47,071 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [376559474] [2023-11-29 06:10:47,071 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-29 06:10:47,071 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 [2023-11-29 06:10:47,072 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d381aea4-1210-456f-9430-11c73b854b58/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 06:10:47,072 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d381aea4-1210-456f-9430-11c73b854b58/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -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) [2023-11-29 06:10:47,073 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d381aea4-1210-456f-9430-11c73b854b58/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -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 [2023-11-29 06:10:47,202 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2023-11-29 06:10:47,202 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 06:10:47,207 INFO L262 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 20 conjunts are in the unsatisfiable core [2023-11-29 06:10:47,209 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:10:47,221 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 8 treesize of output 7 [2023-11-29 06:10:47,659 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-11-29 06:10:47,660 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 06:10:49,475 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-11-29 06:10:49,475 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 06:10:49,475 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [376559474] [2023-11-29 06:10:49,475 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [376559474] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 06:10:49,476 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 06:10:49,476 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 19 [2023-11-29 06:10:49,476 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2110630723] [2023-11-29 06:10:49,476 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 06:10:49,476 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-11-29 06:10:49,477 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 06:10:49,477 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-11-29 06:10:49,477 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=297, Unknown=0, NotChecked=0, Total=380 [2023-11-29 06:10:49,478 INFO L87 Difference]: Start difference. First operand 85 states and 111 transitions. Second operand has 20 states, 19 states have (on average 2.5789473684210527) internal successors, (49), 20 states have internal predecessors, (49), 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) [2023-11-29 06:10:52,538 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.10s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-29 06:10:54,838 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:10:54,839 INFO L93 Difference]: Finished difference Result 146 states and 181 transitions. [2023-11-29 06:10:54,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-11-29 06:10:54,840 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 2.5789473684210527) internal successors, (49), 20 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 31 [2023-11-29 06:10:54,840 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:10:54,841 INFO L225 Difference]: With dead ends: 146 [2023-11-29 06:10:54,841 INFO L226 Difference]: Without dead ends: 146 [2023-11-29 06:10:54,842 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 294 ImplicationChecksByTransitivity, 4.4s TimeCoverageRelationStatistics Valid=435, Invalid=1125, Unknown=0, NotChecked=0, Total=1560 [2023-11-29 06:10:54,843 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 373 mSDsluCounter, 71 mSDsCounter, 0 mSdLazyCounter, 259 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 373 SdHoareTripleChecker+Valid, 82 SdHoareTripleChecker+Invalid, 266 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 259 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2023-11-29 06:10:54,843 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [373 Valid, 82 Invalid, 266 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 259 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2023-11-29 06:10:54,844 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2023-11-29 06:10:54,846 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 114. [2023-11-29 06:10:54,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 114 states, 112 states have (on average 1.2946428571428572) internal successors, (145), 113 states have internal predecessors, (145), 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) [2023-11-29 06:10:54,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 145 transitions. [2023-11-29 06:10:54,848 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 145 transitions. Word has length 31 [2023-11-29 06:10:54,848 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:10:54,848 INFO L495 AbstractCegarLoop]: Abstraction has 114 states and 145 transitions. [2023-11-29 06:10:54,848 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 2.5789473684210527) internal successors, (49), 20 states have internal predecessors, (49), 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) [2023-11-29 06:10:54,848 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 145 transitions. [2023-11-29 06:10:54,850 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2023-11-29 06:10:54,850 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:10:54,850 INFO L195 NwaCegarLoop]: trace histogram [23, 22, 1, 1, 1, 1] [2023-11-29 06:10:54,854 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d381aea4-1210-456f-9430-11c73b854b58/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -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)] Ended with exit code 0 [2023-11-29 06:10:55,051 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d381aea4-1210-456f-9430-11c73b854b58/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 06:10:55,051 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 6 more)] === [2023-11-29 06:10:55,051 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:10:55,052 INFO L85 PathProgramCache]: Analyzing trace with hash -1790583215, now seen corresponding path program 4 times [2023-11-29 06:10:55,052 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 06:10:55,052 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2077379842] [2023-11-29 06:10:55,052 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-11-29 06:10:55,053 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 [2023-11-29 06:10:55,053 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d381aea4-1210-456f-9430-11c73b854b58/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 06:10:55,054 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d381aea4-1210-456f-9430-11c73b854b58/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -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) [2023-11-29 06:10:55,054 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d381aea4-1210-456f-9430-11c73b854b58/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -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 [2023-11-29 06:10:55,279 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-11-29 06:10:55,279 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 06:10:55,292 INFO L262 TraceCheckSpWp]: Trace formula consists of 285 conjuncts, 34 conjunts are in the unsatisfiable core [2023-11-29 06:10:55,296 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:10:55,315 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 8 treesize of output 7 [2023-11-29 06:10:56,821 INFO L134 CoverageAnalysis]: Checked inductivity of 506 backedges. 0 proven. 506 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:10:56,822 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 06:11:06,808 INFO L134 CoverageAnalysis]: Checked inductivity of 506 backedges. 0 proven. 506 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:11:06,808 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 06:11:06,808 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2077379842] [2023-11-29 06:11:06,808 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2077379842] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 06:11:06,808 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 06:11:06,809 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26] total 51 [2023-11-29 06:11:06,809 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1821205079] [2023-11-29 06:11:06,809 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 06:11:06,809 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2023-11-29 06:11:06,809 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 06:11:06,811 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2023-11-29 06:11:06,812 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=680, Invalid=1972, Unknown=0, NotChecked=0, Total=2652 [2023-11-29 06:11:06,812 INFO L87 Difference]: Start difference. First operand 114 states and 145 transitions. Second operand has 52 states, 51 states have (on average 1.9019607843137254) internal successors, (97), 52 states have internal predecessors, (97), 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) [2023-11-29 06:11:29,988 WARN L293 SmtUtils]: Spent 15.44s on a formula simplification that was a NOOP. DAG size: 257 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-11-29 06:12:02,859 WARN L293 SmtUtils]: Spent 31.72s on a formula simplification. DAG size of input: 253 DAG size of output: 252 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-11-29 06:12:17,890 WARN L293 SmtUtils]: Spent 13.91s on a formula simplification that was a NOOP. DAG size: 246 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-11-29 06:12:52,659 WARN L293 SmtUtils]: Spent 33.42s on a formula simplification. DAG size of input: 242 DAG size of output: 241 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-11-29 06:13:05,133 WARN L293 SmtUtils]: Spent 11.24s on a formula simplification that was a NOOP. DAG size: 235 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-11-29 06:13:32,173 WARN L293 SmtUtils]: Spent 25.87s on a formula simplification. DAG size of input: 231 DAG size of output: 230 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-11-29 06:13:43,545 WARN L293 SmtUtils]: Spent 10.16s on a formula simplification that was a NOOP. DAG size: 225 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-11-29 06:14:09,212 WARN L293 SmtUtils]: Spent 24.44s on a formula simplification. DAG size of input: 221 DAG size of output: 220 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-11-29 06:14:21,984 WARN L293 SmtUtils]: Spent 11.53s on a formula simplification that was a NOOP. DAG size: 214 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-11-29 06:14:43,967 WARN L293 SmtUtils]: Spent 20.56s on a formula simplification. DAG size of input: 210 DAG size of output: 209 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-11-29 06:14:55,344 WARN L293 SmtUtils]: Spent 10.06s on a formula simplification that was a NOOP. DAG size: 203 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-11-29 06:15:13,710 WARN L293 SmtUtils]: Spent 16.97s on a formula simplification. DAG size of input: 199 DAG size of output: 198 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-11-29 06:15:22,251 WARN L293 SmtUtils]: Spent 7.35s on a formula simplification that was a NOOP. DAG size: 192 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-11-29 06:15:40,396 WARN L293 SmtUtils]: Spent 16.78s on a formula simplification. DAG size of input: 188 DAG size of output: 187 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-11-29 06:15:47,759 WARN L293 SmtUtils]: Spent 6.14s on a formula simplification that was a NOOP. DAG size: 182 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-11-29 06:16:01,596 WARN L293 SmtUtils]: Spent 12.51s on a formula simplification. DAG size of input: 178 DAG size of output: 177 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-11-29 06:16:19,563 WARN L293 SmtUtils]: Spent 10.49s on a formula simplification. DAG size of input: 167 DAG size of output: 166 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-11-29 06:16:35,016 WARN L293 SmtUtils]: Spent 9.51s on a formula simplification. DAG size of input: 156 DAG size of output: 155 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-11-29 06:16:46,782 WARN L293 SmtUtils]: Spent 6.50s on a formula simplification. DAG size of input: 145 DAG size of output: 144 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-11-29 06:16:57,427 WARN L293 SmtUtils]: Spent 5.18s on a formula simplification. DAG size of input: 135 DAG size of output: 134 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-11-29 06:17:38,529 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:17:38,529 INFO L93 Difference]: Finished difference Result 205 states and 260 transitions. [2023-11-29 06:17:38,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 95 states. [2023-11-29 06:17:38,531 INFO L78 Accepts]: Start accepts. Automaton has has 52 states, 51 states have (on average 1.9019607843137254) internal successors, (97), 52 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 49 [2023-11-29 06:17:38,531 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:17:38,532 INFO L225 Difference]: With dead ends: 205 [2023-11-29 06:17:38,532 INFO L226 Difference]: Without dead ends: 205 [2023-11-29 06:17:38,537 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 165 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 119 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3772 ImplicationChecksByTransitivity, 392.4s TimeCoverageRelationStatistics Valid=4476, Invalid=10044, Unknown=0, NotChecked=0, Total=14520 [2023-11-29 06:17:38,538 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 675 mSDsluCounter, 96 mSDsCounter, 0 mSdLazyCounter, 2443 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 675 SdHoareTripleChecker+Valid, 104 SdHoareTripleChecker+Invalid, 2445 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 2443 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.9s IncrementalHoareTripleChecker+Time [2023-11-29 06:17:38,538 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [675 Valid, 104 Invalid, 2445 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 2443 Invalid, 0 Unknown, 0 Unchecked, 7.9s Time] [2023-11-29 06:17:38,539 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 205 states. [2023-11-29 06:17:38,542 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 205 to 162. [2023-11-29 06:17:38,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 162 states, 160 states have (on average 1.35625) internal successors, (217), 161 states have internal predecessors, (217), 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) [2023-11-29 06:17:38,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 217 transitions. [2023-11-29 06:17:38,544 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 217 transitions. Word has length 49 [2023-11-29 06:17:38,544 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:17:38,544 INFO L495 AbstractCegarLoop]: Abstraction has 162 states and 217 transitions. [2023-11-29 06:17:38,544 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 52 states, 51 states have (on average 1.9019607843137254) internal successors, (97), 52 states have internal predecessors, (97), 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) [2023-11-29 06:17:38,545 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 217 transitions. [2023-11-29 06:17:38,546 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2023-11-29 06:17:38,546 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:17:38,546 INFO L195 NwaCegarLoop]: trace histogram [11, 10, 10, 10, 2, 2, 1, 1, 1, 1, 1, 1] [2023-11-29 06:17:38,551 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d381aea4-1210-456f-9430-11c73b854b58/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -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)] Ended with exit code 0 [2023-11-29 06:17:38,747 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d381aea4-1210-456f-9430-11c73b854b58/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 06:17:38,747 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 6 more)] === [2023-11-29 06:17:38,747 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:17:38,747 INFO L85 PathProgramCache]: Analyzing trace with hash -1675381813, now seen corresponding path program 4 times [2023-11-29 06:17:38,748 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 06:17:38,748 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [166968791] [2023-11-29 06:17:38,748 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-11-29 06:17:38,748 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 [2023-11-29 06:17:38,748 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d381aea4-1210-456f-9430-11c73b854b58/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 06:17:38,749 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d381aea4-1210-456f-9430-11c73b854b58/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -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) [2023-11-29 06:17:38,750 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d381aea4-1210-456f-9430-11c73b854b58/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -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 [2023-11-29 06:17:38,838 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-11-29 06:17:38,839 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 06:17:38,843 INFO L262 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 27 conjunts are in the unsatisfiable core [2023-11-29 06:17:38,846 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:17:38,861 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 8 treesize of output 7 [2023-11-29 06:17:39,795 INFO L134 CoverageAnalysis]: Checked inductivity of 204 backedges. 90 proven. 102 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-11-29 06:17:39,795 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 06:17:44,700 INFO L134 CoverageAnalysis]: Checked inductivity of 204 backedges. 0 proven. 204 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:17:44,700 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 06:17:44,700 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [166968791] [2023-11-29 06:17:44,700 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [166968791] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 06:17:44,700 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 06:17:44,701 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 18] total 32 [2023-11-29 06:17:44,701 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [107635591] [2023-11-29 06:17:44,701 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 06:17:44,701 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2023-11-29 06:17:44,702 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 06:17:44,702 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2023-11-29 06:17:44,703 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=146, Invalid=846, Unknown=0, NotChecked=0, Total=992 [2023-11-29 06:17:44,703 INFO L87 Difference]: Start difference. First operand 162 states and 217 transitions. Second operand has 32 states, 32 states have (on average 2.9375) internal successors, (94), 32 states have internal predecessors, (94), 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) [2023-11-29 06:18:01,213 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:18:01,213 INFO L93 Difference]: Finished difference Result 270 states and 337 transitions. [2023-11-29 06:18:01,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2023-11-29 06:18:01,215 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 2.9375) internal successors, (94), 32 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 51 [2023-11-29 06:18:01,215 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:18:01,216 INFO L225 Difference]: With dead ends: 270 [2023-11-29 06:18:01,216 INFO L226 Difference]: Without dead ends: 253 [2023-11-29 06:18:01,218 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 70 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 572 ImplicationChecksByTransitivity, 13.8s TimeCoverageRelationStatistics Valid=680, Invalid=3352, Unknown=0, NotChecked=0, Total=4032 [2023-11-29 06:18:01,218 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 366 mSDsluCounter, 278 mSDsCounter, 0 mSdLazyCounter, 1119 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 366 SdHoareTripleChecker+Valid, 289 SdHoareTripleChecker+Invalid, 1127 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 1119 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.0s IncrementalHoareTripleChecker+Time [2023-11-29 06:18:01,218 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [366 Valid, 289 Invalid, 1127 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 1119 Invalid, 0 Unknown, 0 Unchecked, 7.0s Time] [2023-11-29 06:18:01,219 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 253 states. [2023-11-29 06:18:01,222 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 253 to 169. [2023-11-29 06:18:01,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 169 states, 167 states have (on average 1.341317365269461) internal successors, (224), 168 states have internal predecessors, (224), 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) [2023-11-29 06:18:01,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169 states to 169 states and 224 transitions. [2023-11-29 06:18:01,223 INFO L78 Accepts]: Start accepts. Automaton has 169 states and 224 transitions. Word has length 51 [2023-11-29 06:18:01,223 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:18:01,224 INFO L495 AbstractCegarLoop]: Abstraction has 169 states and 224 transitions. [2023-11-29 06:18:01,224 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 2.9375) internal successors, (94), 32 states have internal predecessors, (94), 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) [2023-11-29 06:18:01,224 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states and 224 transitions. [2023-11-29 06:18:01,224 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2023-11-29 06:18:01,224 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:18:01,224 INFO L195 NwaCegarLoop]: trace histogram [12, 11, 11, 11, 3, 3, 1, 1, 1, 1, 1, 1] [2023-11-29 06:18:01,228 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d381aea4-1210-456f-9430-11c73b854b58/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -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)] Ended with exit code 0 [2023-11-29 06:18:01,425 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d381aea4-1210-456f-9430-11c73b854b58/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 06:18:01,425 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 6 more)] === [2023-11-29 06:18:01,425 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:18:01,425 INFO L85 PathProgramCache]: Analyzing trace with hash -1761156169, now seen corresponding path program 5 times [2023-11-29 06:18:01,426 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 06:18:01,426 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [789278588] [2023-11-29 06:18:01,426 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-11-29 06:18:01,426 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 [2023-11-29 06:18:01,426 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d381aea4-1210-456f-9430-11c73b854b58/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 06:18:01,427 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d381aea4-1210-456f-9430-11c73b854b58/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -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) [2023-11-29 06:18:01,428 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d381aea4-1210-456f-9430-11c73b854b58/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -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 [2023-11-29 06:18:01,728 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 12 check-sat command(s) [2023-11-29 06:18:01,728 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 06:18:01,735 INFO L262 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 29 conjunts are in the unsatisfiable core [2023-11-29 06:18:01,737 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:18:01,749 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 8 treesize of output 7 [2023-11-29 06:18:02,780 INFO L134 CoverageAnalysis]: Checked inductivity of 251 backedges. 120 proven. 107 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-11-29 06:18:02,780 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 06:18:08,667 INFO L134 CoverageAnalysis]: Checked inductivity of 251 backedges. 0 proven. 251 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:18:08,668 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 06:18:08,668 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [789278588] [2023-11-29 06:18:08,668 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [789278588] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 06:18:08,668 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 06:18:08,668 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 20] total 35 [2023-11-29 06:18:08,668 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [295764545] [2023-11-29 06:18:08,668 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 06:18:08,669 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2023-11-29 06:18:08,669 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 06:18:08,670 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2023-11-29 06:18:08,670 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=160, Invalid=1030, Unknown=0, NotChecked=0, Total=1190 [2023-11-29 06:18:08,670 INFO L87 Difference]: Start difference. First operand 169 states and 224 transitions. Second operand has 35 states, 35 states have (on average 2.914285714285714) internal successors, (102), 35 states have internal predecessors, (102), 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) [2023-11-29 06:18:29,464 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:18:29,465 INFO L93 Difference]: Finished difference Result 358 states and 436 transitions. [2023-11-29 06:18:29,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2023-11-29 06:18:29,467 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 2.914285714285714) internal successors, (102), 35 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 57 [2023-11-29 06:18:29,467 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:18:29,468 INFO L225 Difference]: With dead ends: 358 [2023-11-29 06:18:29,468 INFO L226 Difference]: Without dead ends: 334 [2023-11-29 06:18:29,470 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 149 GetRequests, 79 SyntacticMatches, 0 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 779 ImplicationChecksByTransitivity, 17.1s TimeCoverageRelationStatistics Valid=863, Invalid=4249, Unknown=0, NotChecked=0, Total=5112 [2023-11-29 06:18:29,470 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 504 mSDsluCounter, 308 mSDsCounter, 0 mSdLazyCounter, 1251 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 504 SdHoareTripleChecker+Valid, 323 SdHoareTripleChecker+Invalid, 1260 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 1251 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.8s IncrementalHoareTripleChecker+Time [2023-11-29 06:18:29,470 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [504 Valid, 323 Invalid, 1260 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 1251 Invalid, 0 Unknown, 0 Unchecked, 8.8s Time] [2023-11-29 06:18:29,471 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 334 states. [2023-11-29 06:18:29,476 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 334 to 238. [2023-11-29 06:18:29,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 238 states, 236 states have (on average 1.2881355932203389) internal successors, (304), 237 states have internal predecessors, (304), 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) [2023-11-29 06:18:29,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 238 states to 238 states and 304 transitions. [2023-11-29 06:18:29,478 INFO L78 Accepts]: Start accepts. Automaton has 238 states and 304 transitions. Word has length 57 [2023-11-29 06:18:29,478 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:18:29,478 INFO L495 AbstractCegarLoop]: Abstraction has 238 states and 304 transitions. [2023-11-29 06:18:29,478 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 2.914285714285714) internal successors, (102), 35 states have internal predecessors, (102), 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) [2023-11-29 06:18:29,479 INFO L276 IsEmpty]: Start isEmpty. Operand 238 states and 304 transitions. [2023-11-29 06:18:29,479 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2023-11-29 06:18:29,480 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:18:29,480 INFO L195 NwaCegarLoop]: trace histogram [11, 10, 10, 10, 6, 6, 1, 1, 1, 1, 1, 1] [2023-11-29 06:18:29,484 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d381aea4-1210-456f-9430-11c73b854b58/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -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)] Ended with exit code 0 [2023-11-29 06:18:29,680 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d381aea4-1210-456f-9430-11c73b854b58/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 06:18:29,680 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 6 more)] === [2023-11-29 06:18:29,681 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:18:29,681 INFO L85 PathProgramCache]: Analyzing trace with hash 29732783, now seen corresponding path program 6 times [2023-11-29 06:18:29,681 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 06:18:29,681 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1085571072] [2023-11-29 06:18:29,681 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-11-29 06:18:29,682 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 [2023-11-29 06:18:29,682 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d381aea4-1210-456f-9430-11c73b854b58/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 06:18:29,682 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d381aea4-1210-456f-9430-11c73b854b58/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -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) [2023-11-29 06:18:29,683 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d381aea4-1210-456f-9430-11c73b854b58/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -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 [2023-11-29 06:18:29,987 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 11 check-sat command(s) [2023-11-29 06:18:29,987 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 06:18:29,996 INFO L262 TraceCheckSpWp]: Trace formula consists of 182 conjuncts, 31 conjunts are in the unsatisfiable core [2023-11-29 06:18:29,999 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:18:30,011 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 8 treesize of output 7 [2023-11-29 06:18:31,196 INFO L134 CoverageAnalysis]: Checked inductivity of 236 backedges. 90 proven. 134 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-11-29 06:18:31,196 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 06:18:37,319 INFO L134 CoverageAnalysis]: Checked inductivity of 236 backedges. 0 proven. 236 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:18:37,320 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 06:18:37,320 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1085571072] [2023-11-29 06:18:37,320 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1085571072] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 06:18:37,320 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 06:18:37,320 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 22] total 40 [2023-11-29 06:18:37,320 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1372366773] [2023-11-29 06:18:37,320 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 06:18:37,321 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2023-11-29 06:18:37,321 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 06:18:37,321 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2023-11-29 06:18:37,322 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=185, Invalid=1375, Unknown=0, NotChecked=0, Total=1560 [2023-11-29 06:18:37,322 INFO L87 Difference]: Start difference. First operand 238 states and 304 transitions. Second operand has 40 states, 40 states have (on average 2.75) internal successors, (110), 40 states have internal predecessors, (110), 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) [2023-11-29 06:18:55,000 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:18:55,000 INFO L93 Difference]: Finished difference Result 351 states and 426 transitions. [2023-11-29 06:18:55,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2023-11-29 06:18:55,002 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 40 states have (on average 2.75) internal successors, (110), 40 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 59 [2023-11-29 06:18:55,002 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:18:55,003 INFO L225 Difference]: With dead ends: 351 [2023-11-29 06:18:55,003 INFO L226 Difference]: Without dead ends: 260 [2023-11-29 06:18:55,005 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 156 GetRequests, 78 SyntacticMatches, 0 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1001 ImplicationChecksByTransitivity, 15.7s TimeCoverageRelationStatistics Valid=1003, Invalid=5317, Unknown=0, NotChecked=0, Total=6320 [2023-11-29 06:18:55,005 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 653 mSDsluCounter, 446 mSDsCounter, 0 mSdLazyCounter, 1961 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 653 SdHoareTripleChecker+Valid, 466 SdHoareTripleChecker+Invalid, 1981 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 1961 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.4s IncrementalHoareTripleChecker+Time [2023-11-29 06:18:55,006 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [653 Valid, 466 Invalid, 1981 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 1961 Invalid, 0 Unknown, 0 Unchecked, 7.4s Time] [2023-11-29 06:18:55,006 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 260 states. [2023-11-29 06:18:55,009 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 260 to 175. [2023-11-29 06:18:55,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 175 states, 173 states have (on average 1.3121387283236994) internal successors, (227), 174 states have internal predecessors, (227), 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) [2023-11-29 06:18:55,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175 states to 175 states and 227 transitions. [2023-11-29 06:18:55,010 INFO L78 Accepts]: Start accepts. Automaton has 175 states and 227 transitions. Word has length 59 [2023-11-29 06:18:55,010 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:18:55,010 INFO L495 AbstractCegarLoop]: Abstraction has 175 states and 227 transitions. [2023-11-29 06:18:55,011 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 40 states have (on average 2.75) internal successors, (110), 40 states have internal predecessors, (110), 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) [2023-11-29 06:18:55,011 INFO L276 IsEmpty]: Start isEmpty. Operand 175 states and 227 transitions. [2023-11-29 06:18:55,012 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2023-11-29 06:18:55,012 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:18:55,012 INFO L195 NwaCegarLoop]: trace histogram [11, 10, 10, 10, 8, 8, 1, 1, 1, 1, 1, 1] [2023-11-29 06:18:55,017 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d381aea4-1210-456f-9430-11c73b854b58/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -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 [2023-11-29 06:18:55,212 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d381aea4-1210-456f-9430-11c73b854b58/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 06:18:55,212 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 6 more)] === [2023-11-29 06:18:55,212 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:18:55,213 INFO L85 PathProgramCache]: Analyzing trace with hash 1191403553, now seen corresponding path program 7 times [2023-11-29 06:18:55,213 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 06:18:55,213 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1847614727] [2023-11-29 06:18:55,213 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-11-29 06:18:55,213 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 [2023-11-29 06:18:55,213 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d381aea4-1210-456f-9430-11c73b854b58/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 06:18:55,214 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d381aea4-1210-456f-9430-11c73b854b58/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -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) [2023-11-29 06:18:55,215 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d381aea4-1210-456f-9430-11c73b854b58/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -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 [2023-11-29 06:18:55,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:18:55,373 INFO L262 TraceCheckSpWp]: Trace formula consists of 206 conjuncts, 34 conjunts are in the unsatisfiable core [2023-11-29 06:18:55,375 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:18:55,390 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 8 treesize of output 7 [2023-11-29 06:18:57,012 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 38 proven. 226 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:18:57,012 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 06:19:06,324 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 0 proven. 264 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:19:06,324 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 06:19:06,324 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1847614727] [2023-11-29 06:19:06,324 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1847614727] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 06:19:06,324 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 06:19:06,324 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 25] total 48 [2023-11-29 06:19:06,324 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1864447206] [2023-11-29 06:19:06,325 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 06:19:06,325 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2023-11-29 06:19:06,325 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 06:19:06,325 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2023-11-29 06:19:06,326 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=266, Invalid=1990, Unknown=0, NotChecked=0, Total=2256 [2023-11-29 06:19:06,326 INFO L87 Difference]: Start difference. First operand 175 states and 227 transitions. Second operand has 48 states, 48 states have (on average 2.6041666666666665) internal successors, (125), 48 states have internal predecessors, (125), 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) [2023-11-29 06:19:23,142 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.18s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-29 06:19:28,509 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:19:28,510 INFO L93 Difference]: Finished difference Result 371 states and 446 transitions. [2023-11-29 06:19:28,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2023-11-29 06:19:28,512 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 48 states have (on average 2.6041666666666665) internal successors, (125), 48 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 63 [2023-11-29 06:19:28,512 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:19:28,513 INFO L225 Difference]: With dead ends: 371 [2023-11-29 06:19:28,513 INFO L226 Difference]: Without dead ends: 253 [2023-11-29 06:19:28,516 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 78 SyntacticMatches, 0 SemanticMatches, 89 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1343 ImplicationChecksByTransitivity, 21.9s TimeCoverageRelationStatistics Valid=1321, Invalid=6869, Unknown=0, NotChecked=0, Total=8190 [2023-11-29 06:19:28,517 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 633 mSDsluCounter, 477 mSDsCounter, 0 mSdLazyCounter, 2101 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 633 SdHoareTripleChecker+Valid, 497 SdHoareTripleChecker+Invalid, 2116 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 2101 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.3s IncrementalHoareTripleChecker+Time [2023-11-29 06:19:28,517 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [633 Valid, 497 Invalid, 2116 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 2101 Invalid, 0 Unknown, 0 Unchecked, 8.3s Time] [2023-11-29 06:19:28,518 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 253 states. [2023-11-29 06:19:28,521 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 253 to 169. [2023-11-29 06:19:28,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 169 states, 167 states have (on average 1.3053892215568863) internal successors, (218), 168 states have internal predecessors, (218), 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) [2023-11-29 06:19:28,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169 states to 169 states and 218 transitions. [2023-11-29 06:19:28,522 INFO L78 Accepts]: Start accepts. Automaton has 169 states and 218 transitions. Word has length 63 [2023-11-29 06:19:28,522 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:19:28,522 INFO L495 AbstractCegarLoop]: Abstraction has 169 states and 218 transitions. [2023-11-29 06:19:28,523 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 48 states have (on average 2.6041666666666665) internal successors, (125), 48 states have internal predecessors, (125), 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) [2023-11-29 06:19:28,523 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states and 218 transitions. [2023-11-29 06:19:28,523 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2023-11-29 06:19:28,523 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:19:28,523 INFO L195 NwaCegarLoop]: trace histogram [11, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1] [2023-11-29 06:19:28,528 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d381aea4-1210-456f-9430-11c73b854b58/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -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 [2023-11-29 06:19:28,724 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d381aea4-1210-456f-9430-11c73b854b58/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 06:19:28,724 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 6 more)] === [2023-11-29 06:19:28,724 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:19:28,724 INFO L85 PathProgramCache]: Analyzing trace with hash 1546618771, now seen corresponding path program 8 times [2023-11-29 06:19:28,724 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 06:19:28,725 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1083383091] [2023-11-29 06:19:28,725 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 06:19:28,725 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 [2023-11-29 06:19:28,725 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d381aea4-1210-456f-9430-11c73b854b58/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 06:19:28,726 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d381aea4-1210-456f-9430-11c73b854b58/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -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) [2023-11-29 06:19:28,726 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d381aea4-1210-456f-9430-11c73b854b58/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (24)] Waiting until timeout for monitored process [2023-11-29 06:19:28,923 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-29 06:19:28,923 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 06:19:28,934 INFO L262 TraceCheckSpWp]: Trace formula consists of 230 conjuncts, 27 conjunts are in the unsatisfiable core [2023-11-29 06:19:28,936 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:19:28,947 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 8 treesize of output 7 [2023-11-29 06:19:30,201 INFO L134 CoverageAnalysis]: Checked inductivity of 300 backedges. 0 proven. 200 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2023-11-29 06:19:30,202 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 06:19:36,776 INFO L134 CoverageAnalysis]: Checked inductivity of 300 backedges. 0 proven. 200 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2023-11-29 06:19:36,776 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 06:19:36,776 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1083383091] [2023-11-29 06:19:36,776 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1083383091] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 06:19:36,777 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 06:19:36,777 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 33 [2023-11-29 06:19:36,777 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [48495981] [2023-11-29 06:19:36,777 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 06:19:36,777 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2023-11-29 06:19:36,778 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 06:19:36,778 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2023-11-29 06:19:36,779 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=247, Invalid=875, Unknown=0, NotChecked=0, Total=1122 [2023-11-29 06:19:36,779 INFO L87 Difference]: Start difference. First operand 169 states and 218 transitions. Second operand has 34 states, 33 states have (on average 2.9393939393939394) internal successors, (97), 34 states have internal predecessors, (97), 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) [2023-11-29 06:19:50,064 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-29 06:19:51,123 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.06s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-29 06:20:01,313 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-29 06:20:10,234 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.67s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-29 06:20:18,419 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-29 06:20:24,389 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.98s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-29 06:20:29,327 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.01s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-29 06:20:34,922 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-29 06:20:38,605 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:20:38,605 INFO L93 Difference]: Finished difference Result 308 states and 378 transitions. [2023-11-29 06:20:38,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2023-11-29 06:20:38,606 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 33 states have (on average 2.9393939393939394) internal successors, (97), 34 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2023-11-29 06:20:38,606 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:20:38,607 INFO L225 Difference]: With dead ends: 308 [2023-11-29 06:20:38,607 INFO L226 Difference]: Without dead ends: 308 [2023-11-29 06:20:38,609 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 176 GetRequests, 100 SyntacticMatches, 0 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1343 ImplicationChecksByTransitivity, 36.8s TimeCoverageRelationStatistics Valid=1544, Invalid=4462, Unknown=0, NotChecked=0, Total=6006 [2023-11-29 06:20:38,609 INFO L413 NwaCegarLoop]: 23 mSDtfsCounter, 1103 mSDsluCounter, 272 mSDsCounter, 0 mSdLazyCounter, 821 mSolverCounterSat, 22 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 29.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1103 SdHoareTripleChecker+Valid, 295 SdHoareTripleChecker+Invalid, 846 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 821 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 29.5s IncrementalHoareTripleChecker+Time [2023-11-29 06:20:38,609 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1103 Valid, 295 Invalid, 846 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 821 Invalid, 3 Unknown, 0 Unchecked, 29.5s Time] [2023-11-29 06:20:38,610 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 308 states. [2023-11-29 06:20:38,614 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 308 to 234. [2023-11-29 06:20:38,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 234 states, 232 states have (on average 1.2672413793103448) internal successors, (294), 233 states have internal predecessors, (294), 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) [2023-11-29 06:20:38,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 234 states to 234 states and 294 transitions. [2023-11-29 06:20:38,616 INFO L78 Accepts]: Start accepts. Automaton has 234 states and 294 transitions. Word has length 67 [2023-11-29 06:20:38,616 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:20:38,616 INFO L495 AbstractCegarLoop]: Abstraction has 234 states and 294 transitions. [2023-11-29 06:20:38,616 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 33 states have (on average 2.9393939393939394) internal successors, (97), 34 states have internal predecessors, (97), 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) [2023-11-29 06:20:38,616 INFO L276 IsEmpty]: Start isEmpty. Operand 234 states and 294 transitions. [2023-11-29 06:20:38,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2023-11-29 06:20:38,617 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:20:38,617 INFO L195 NwaCegarLoop]: trace histogram [47, 46, 1, 1, 1, 1] [2023-11-29 06:20:38,622 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d381aea4-1210-456f-9430-11c73b854b58/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (24)] Ended with exit code 0 [2023-11-29 06:20:38,818 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d381aea4-1210-456f-9430-11c73b854b58/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 06:20:38,818 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 6 more)] === [2023-11-29 06:20:38,818 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:20:38,818 INFO L85 PathProgramCache]: Analyzing trace with hash 113418153, now seen corresponding path program 5 times [2023-11-29 06:20:38,819 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 06:20:38,819 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1751680287] [2023-11-29 06:20:38,819 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-11-29 06:20:38,819 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 [2023-11-29 06:20:38,819 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d381aea4-1210-456f-9430-11c73b854b58/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 06:20:38,820 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d381aea4-1210-456f-9430-11c73b854b58/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -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) [2023-11-29 06:20:38,821 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d381aea4-1210-456f-9430-11c73b854b58/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (25)] Waiting until timeout for monitored process [2023-11-29 06:20:47,470 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 47 check-sat command(s) [2023-11-29 06:20:47,471 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 06:20:47,496 INFO L262 TraceCheckSpWp]: Trace formula consists of 573 conjuncts, 59 conjunts are in the unsatisfiable core [2023-11-29 06:20:47,499 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:20:47,510 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 8 treesize of output 7 [2023-11-29 06:20:51,896 INFO L134 CoverageAnalysis]: Checked inductivity of 2162 backedges. 0 proven. 2162 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:20:51,897 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 06:21:26,381 INFO L134 CoverageAnalysis]: Checked inductivity of 2162 backedges. 0 proven. 2162 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:21:26,381 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 06:21:26,381 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1751680287] [2023-11-29 06:21:26,381 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1751680287] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 06:21:26,381 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 06:21:26,382 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [50, 50] total 99 [2023-11-29 06:21:26,382 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1225740002] [2023-11-29 06:21:26,382 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 06:21:26,382 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 100 states [2023-11-29 06:21:26,382 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 06:21:26,383 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 100 interpolants. [2023-11-29 06:21:26,384 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2504, Invalid=7396, Unknown=0, NotChecked=0, Total=9900 [2023-11-29 06:21:26,384 INFO L87 Difference]: Start difference. First operand 234 states and 294 transitions. Second operand has 100 states, 99 states have (on average 1.9494949494949494) internal successors, (193), 100 states have internal predecessors, (193), 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) [2023-11-29 06:23:29,079 WARN L293 SmtUtils]: Spent 1.60m on a formula simplification that was a NOOP. DAG size: 515 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate)