./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/valid-memsafety.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-memsafety/memleaks_test22_2-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version fca748b1 Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-memsafety/memleaks_test22_2-2.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --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 beb004be26a355c223f1a45515f5377c37b18fc46f09e77727f89b964ae9789d --- Real Ultimate output --- This is Ultimate 0.2.5-wip.dd.update-z3-fca748b-m [2024-11-20 14:45:35,100 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-20 14:45:35,168 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-11-20 14:45:35,174 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-20 14:45:35,177 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-20 14:45:35,206 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-20 14:45:35,207 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-20 14:45:35,208 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-20 14:45:35,209 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-20 14:45:35,210 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-20 14:45:35,211 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-20 14:45:35,211 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-20 14:45:35,212 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-20 14:45:35,212 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-20 14:45:35,214 INFO L153 SettingsManager]: * Use SBE=true [2024-11-20 14:45:35,214 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-20 14:45:35,214 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-20 14:45:35,215 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-20 14:45:35,215 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-20 14:45:35,215 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-20 14:45:35,215 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-20 14:45:35,218 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-20 14:45:35,219 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-20 14:45:35,219 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-20 14:45:35,219 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-20 14:45:35,219 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-20 14:45:35,220 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-20 14:45:35,220 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-20 14:45:35,220 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-20 14:45:35,220 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-20 14:45:35,221 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-20 14:45:35,221 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-20 14:45:35,221 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-20 14:45:35,221 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-20 14:45:35,221 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-20 14:45:35,222 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-20 14:45:35,222 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-20 14:45:35,224 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-20 14:45:35,224 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-20 14:45:35,224 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-20 14:45:35,225 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-20 14:45:35,225 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-20 14:45:35,225 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:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> beb004be26a355c223f1a45515f5377c37b18fc46f09e77727f89b964ae9789d [2024-11-20 14:45:35,507 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-20 14:45:35,535 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-20 14:45:35,539 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-20 14:45:35,540 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-20 14:45:35,542 INFO L274 PluginConnector]: CDTParser initialized [2024-11-20 14:45:35,543 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-memsafety/memleaks_test22_2-2.i [2024-11-20 14:45:37,001 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-20 14:45:37,303 INFO L384 CDTParser]: Found 1 translation units. [2024-11-20 14:45:37,305 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-memsafety/memleaks_test22_2-2.i [2024-11-20 14:45:37,328 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9cce4bcdc/16902027a9fd461cb35908a58e32656a/FLAG4c1487e47 [2024-11-20 14:45:37,345 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9cce4bcdc/16902027a9fd461cb35908a58e32656a [2024-11-20 14:45:37,349 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-20 14:45:37,350 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-20 14:45:37,354 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-20 14:45:37,355 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-20 14:45:37,360 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-20 14:45:37,361 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 02:45:37" (1/1) ... [2024-11-20 14:45:37,363 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2d15b746 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 02:45:37, skipping insertion in model container [2024-11-20 14:45:37,364 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 02:45:37" (1/1) ... [2024-11-20 14:45:37,413 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-20 14:45:37,769 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-20 14:45:37,837 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-20 14:45:37,856 ERROR L321 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) [2024-11-20 14:45:37,857 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@27ce8372 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 02:45:37, skipping insertion in model container [2024-11-20 14:45:37,857 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-20 14:45:37,858 INFO L186 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2024-11-20 14:45:37,860 INFO L158 Benchmark]: Toolchain (without parser) took 508.64ms. Allocated memory is still 151.0MB. Free memory was 94.2MB in the beginning and 77.8MB in the end (delta: 16.4MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2024-11-20 14:45:37,860 INFO L158 Benchmark]: CDTParser took 0.29ms. Allocated memory is still 151.0MB. Free memory is still 89.8MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-20 14:45:37,861 INFO L158 Benchmark]: CACSL2BoogieTranslator took 503.65ms. Allocated memory is still 151.0MB. Free memory was 93.6MB in the beginning and 77.8MB in the end (delta: 15.8MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2024-11-20 14:45:37,862 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29ms. Allocated memory is still 151.0MB. Free memory is still 89.8MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 503.65ms. Allocated memory is still 151.0MB. Free memory was 93.6MB in the beginning and 77.8MB in the end (delta: 15.8MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 607]: 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: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-memsafety/memleaks_test22_2-2.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --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 beb004be26a355c223f1a45515f5377c37b18fc46f09e77727f89b964ae9789d --- Real Ultimate output --- This is Ultimate 0.2.5-wip.dd.update-z3-fca748b-m [2024-11-20 14:45:39,929 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-20 14:45:40,013 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2024-11-20 14:45:40,017 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-20 14:45:40,018 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-20 14:45:40,058 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-20 14:45:40,060 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-20 14:45:40,061 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-20 14:45:40,062 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-20 14:45:40,062 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-20 14:45:40,063 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-20 14:45:40,063 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-20 14:45:40,064 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-20 14:45:40,065 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-20 14:45:40,065 INFO L153 SettingsManager]: * Use SBE=true [2024-11-20 14:45:40,066 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-20 14:45:40,068 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-20 14:45:40,068 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-20 14:45:40,068 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-20 14:45:40,069 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-20 14:45:40,072 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-20 14:45:40,073 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-20 14:45:40,073 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-20 14:45:40,073 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-20 14:45:40,073 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-20 14:45:40,074 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2024-11-20 14:45:40,074 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-20 14:45:40,074 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2024-11-20 14:45:40,074 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-20 14:45:40,075 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-20 14:45:40,075 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-20 14:45:40,075 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-20 14:45:40,075 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-20 14:45:40,076 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-20 14:45:40,078 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-20 14:45:40,079 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-20 14:45:40,079 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-20 14:45:40,080 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-20 14:45:40,080 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2024-11-20 14:45:40,080 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2024-11-20 14:45:40,081 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-20 14:45:40,081 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-20 14:45:40,081 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-20 14:45:40,081 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-20 14:45:40,082 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:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> beb004be26a355c223f1a45515f5377c37b18fc46f09e77727f89b964ae9789d [2024-11-20 14:45:40,415 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-20 14:45:40,441 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-20 14:45:40,444 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-20 14:45:40,445 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-20 14:45:40,445 INFO L274 PluginConnector]: CDTParser initialized [2024-11-20 14:45:40,446 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-memsafety/memleaks_test22_2-2.i [2024-11-20 14:45:42,075 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-20 14:45:42,336 INFO L384 CDTParser]: Found 1 translation units. [2024-11-20 14:45:42,336 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-memsafety/memleaks_test22_2-2.i [2024-11-20 14:45:42,361 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c62332ee6/83ccbc4958e34372b44ed5bd08e2677d/FLAG271bebe09 [2024-11-20 14:45:42,381 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c62332ee6/83ccbc4958e34372b44ed5bd08e2677d [2024-11-20 14:45:42,384 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-20 14:45:42,386 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-20 14:45:42,388 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-20 14:45:42,389 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-20 14:45:42,395 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-20 14:45:42,396 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 02:45:42" (1/1) ... [2024-11-20 14:45:42,397 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@37d4a29a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 02:45:42, skipping insertion in model container [2024-11-20 14:45:42,397 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 02:45:42" (1/1) ... [2024-11-20 14:45:42,472 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-20 14:45:42,833 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-20 14:45:42,899 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-20 14:45:42,926 INFO L197 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2024-11-20 14:45:42,936 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-20 14:45:42,970 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-20 14:45:42,998 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-20 14:45:43,011 INFO L200 MainTranslator]: Completed pre-run [2024-11-20 14:45:43,061 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-20 14:45:43,104 INFO L204 MainTranslator]: Completed translation [2024-11-20 14:45:43,104 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 02:45:43 WrapperNode [2024-11-20 14:45:43,104 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-20 14:45:43,106 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-20 14:45:43,106 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-20 14:45:43,106 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-20 14:45:43,113 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 02:45:43" (1/1) ... [2024-11-20 14:45:43,151 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 02:45:43" (1/1) ... [2024-11-20 14:45:43,182 INFO L138 Inliner]: procedures = 165, calls = 71, calls flagged for inlining = 23, calls inlined = 17, statements flattened = 123 [2024-11-20 14:45:43,186 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-20 14:45:43,187 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-20 14:45:43,187 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-20 14:45:43,187 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-20 14:45:43,198 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 02:45:43" (1/1) ... [2024-11-20 14:45:43,198 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 02:45:43" (1/1) ... [2024-11-20 14:45:43,202 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 02:45:43" (1/1) ... [2024-11-20 14:45:43,240 INFO L175 MemorySlicer]: Split 12 memory accesses to 2 slices as follows [2, 10]. 83 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 7 writes are split as follows [0, 7]. [2024-11-20 14:45:43,244 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 02:45:43" (1/1) ... [2024-11-20 14:45:43,244 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 02:45:43" (1/1) ... [2024-11-20 14:45:43,258 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 02:45:43" (1/1) ... [2024-11-20 14:45:43,262 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 02:45:43" (1/1) ... [2024-11-20 14:45:43,264 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 02:45:43" (1/1) ... [2024-11-20 14:45:43,266 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 02:45:43" (1/1) ... [2024-11-20 14:45:43,270 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-20 14:45:43,271 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-20 14:45:43,271 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-20 14:45:43,271 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-20 14:45:43,272 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 02:45:43" (1/1) ... [2024-11-20 14:45:43,278 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-20 14:45:43,294 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 14:45:43,316 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-20 14:45:43,325 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-20 14:45:43,394 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#0 [2024-11-20 14:45:43,394 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#1 [2024-11-20 14:45:43,394 INFO L130 BoogieDeclarations]: Found specification of procedure LDV_INIT_LIST_HEAD [2024-11-20 14:45:43,394 INFO L138 BoogieDeclarations]: Found implementation of procedure LDV_INIT_LIST_HEAD [2024-11-20 14:45:43,394 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2024-11-20 14:45:43,394 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2024-11-20 14:45:43,394 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kobject_put [2024-11-20 14:45:43,395 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kobject_put [2024-11-20 14:45:43,395 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-20 14:45:43,395 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-20 14:45:43,395 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2024-11-20 14:45:43,395 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2024-11-20 14:45:43,395 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2024-11-20 14:45:43,395 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2024-11-20 14:45:43,395 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#0 [2024-11-20 14:45:43,396 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#1 [2024-11-20 14:45:43,396 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-20 14:45:43,396 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#0 [2024-11-20 14:45:43,396 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#1 [2024-11-20 14:45:43,397 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-20 14:45:43,397 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-20 14:45:43,548 INFO L238 CfgBuilder]: Building ICFG [2024-11-20 14:45:43,552 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-20 14:45:44,015 INFO L? ?]: Removed 133 outVars from TransFormulas that were not future-live. [2024-11-20 14:45:44,016 INFO L287 CfgBuilder]: Performing block encoding [2024-11-20 14:45:44,033 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-20 14:45:44,033 INFO L316 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-20 14:45:44,034 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 02:45:44 BoogieIcfgContainer [2024-11-20 14:45:44,034 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-20 14:45:44,035 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-20 14:45:44,036 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-20 14:45:44,038 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-20 14:45:44,039 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 02:45:42" (1/3) ... [2024-11-20 14:45:44,039 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3d7f752c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 02:45:44, skipping insertion in model container [2024-11-20 14:45:44,039 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 02:45:43" (2/3) ... [2024-11-20 14:45:44,040 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3d7f752c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 02:45:44, skipping insertion in model container [2024-11-20 14:45:44,040 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 02:45:44" (3/3) ... [2024-11-20 14:45:44,042 INFO L112 eAbstractionObserver]: Analyzing ICFG memleaks_test22_2-2.i [2024-11-20 14:45:44,058 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-20 14:45:44,059 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 25 error locations. [2024-11-20 14:45:44,110 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-20 14:45:44,117 INFO L333 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, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=None, 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;@116cc3ee, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-20 14:45:44,117 INFO L334 AbstractCegarLoop]: Starting to check reachability of 25 error locations. [2024-11-20 14:45:44,123 INFO L276 IsEmpty]: Start isEmpty. Operand has 90 states, 57 states have (on average 1.5964912280701755) internal successors, (91), 83 states have internal predecessors, (91), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-11-20 14:45:44,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2024-11-20 14:45:44,129 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 14:45:44,130 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 14:45:44,130 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE === [LDV_INIT_LIST_HEADErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, LDV_INIT_LIST_HEADErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, LDV_INIT_LIST_HEADErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2024-11-20 14:45:44,137 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 14:45:44,137 INFO L85 PathProgramCache]: Analyzing trace with hash -459041073, now seen corresponding path program 1 times [2024-11-20 14:45:44,149 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-11-20 14:45:44,149 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1879268859] [2024-11-20 14:45:44,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 14:45:44,150 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 [2024-11-20 14:45:44,150 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-11-20 14:45:44,153 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -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) [2024-11-20 14:45:44,154 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -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 [2024-11-20 14:45:44,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 14:45:44,257 INFO L255 TraceCheckSpWp]: Trace formula consists of 40 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-20 14:45:44,261 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 14:45:44,323 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 [2024-11-20 14:45:44,373 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 14:45:44,374 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-20 14:45:44,374 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-11-20 14:45:44,374 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1879268859] [2024-11-20 14:45:44,375 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1879268859] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 14:45:44,375 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 14:45:44,375 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-20 14:45:44,377 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [248743656] [2024-11-20 14:45:44,377 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 14:45:44,381 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-20 14:45:44,381 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-11-20 14:45:44,406 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-20 14:45:44,406 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-20 14:45:44,409 INFO L87 Difference]: Start difference. First operand has 90 states, 57 states have (on average 1.5964912280701755) internal successors, (91), 83 states have internal predecessors, (91), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Second operand has 6 states, 5 states have (on average 1.6) internal successors, (8), 5 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-20 14:45:44,747 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 14:45:44,748 INFO L93 Difference]: Finished difference Result 108 states and 122 transitions. [2024-11-20 14:45:44,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-20 14:45:44,750 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 1.6) internal successors, (8), 5 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 10 [2024-11-20 14:45:44,751 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 14:45:44,761 INFO L225 Difference]: With dead ends: 108 [2024-11-20 14:45:44,761 INFO L226 Difference]: Without dead ends: 106 [2024-11-20 14:45:44,763 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-20 14:45:44,767 INFO L432 NwaCegarLoop]: 89 mSDtfsCounter, 23 mSDsluCounter, 245 mSDsCounter, 0 mSdLazyCounter, 160 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 334 SdHoareTripleChecker+Invalid, 161 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 160 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-20 14:45:44,769 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 334 Invalid, 161 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 160 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-20 14:45:44,782 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2024-11-20 14:45:44,802 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 93. [2024-11-20 14:45:44,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93 states, 60 states have (on average 1.5666666666666667) internal successors, (94), 85 states have internal predecessors, (94), 4 states have call successors, (4), 3 states have call predecessors, (4), 4 states have return successors, (5), 5 states have call predecessors, (5), 4 states have call successors, (5) [2024-11-20 14:45:44,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 103 transitions. [2024-11-20 14:45:44,808 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 103 transitions. Word has length 10 [2024-11-20 14:45:44,811 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 14:45:44,814 INFO L471 AbstractCegarLoop]: Abstraction has 93 states and 103 transitions. [2024-11-20 14:45:44,814 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 1.6) internal successors, (8), 5 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-20 14:45:44,814 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 103 transitions. [2024-11-20 14:45:44,815 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2024-11-20 14:45:44,815 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 14:45:44,815 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 14:45:44,820 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -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)] Ended with exit code 0 [2024-11-20 14:45:45,018 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-20 14:45:45,019 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE === [LDV_INIT_LIST_HEADErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, LDV_INIT_LIST_HEADErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, LDV_INIT_LIST_HEADErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2024-11-20 14:45:45,019 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 14:45:45,019 INFO L85 PathProgramCache]: Analyzing trace with hash -430411922, now seen corresponding path program 1 times [2024-11-20 14:45:45,020 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-11-20 14:45:45,020 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [696348442] [2024-11-20 14:45:45,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 14:45:45,021 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 [2024-11-20 14:45:45,021 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-11-20 14:45:45,024 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -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) [2024-11-20 14:45:45,025 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -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 [2024-11-20 14:45:45,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 14:45:45,098 INFO L255 TraceCheckSpWp]: Trace formula consists of 34 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-20 14:45:45,099 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 14:45:45,153 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 14:45:45,153 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-20 14:45:45,153 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-11-20 14:45:45,153 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [696348442] [2024-11-20 14:45:45,153 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [696348442] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 14:45:45,153 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 14:45:45,154 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-20 14:45:45,154 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1530840123] [2024-11-20 14:45:45,154 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 14:45:45,157 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-20 14:45:45,157 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-11-20 14:45:45,158 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-20 14:45:45,159 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-20 14:45:45,159 INFO L87 Difference]: Start difference. First operand 93 states and 103 transitions. Second operand has 5 states, 5 states have (on average 1.6) internal successors, (8), 4 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-20 14:45:45,191 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 14:45:45,192 INFO L93 Difference]: Finished difference Result 91 states and 100 transitions. [2024-11-20 14:45:45,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-20 14:45:45,192 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.6) internal successors, (8), 4 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 10 [2024-11-20 14:45:45,193 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 14:45:45,194 INFO L225 Difference]: With dead ends: 91 [2024-11-20 14:45:45,194 INFO L226 Difference]: Without dead ends: 91 [2024-11-20 14:45:45,194 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-20 14:45:45,195 INFO L432 NwaCegarLoop]: 98 mSDtfsCounter, 0 mSDsluCounter, 280 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 378 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-20 14:45:45,196 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 378 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-20 14:45:45,197 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2024-11-20 14:45:45,202 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 91. [2024-11-20 14:45:45,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 91 states, 59 states have (on average 1.5423728813559323) internal successors, (91), 83 states have internal predecessors, (91), 4 states have call successors, (4), 3 states have call predecessors, (4), 4 states have return successors, (5), 5 states have call predecessors, (5), 4 states have call successors, (5) [2024-11-20 14:45:45,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 100 transitions. [2024-11-20 14:45:45,207 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 100 transitions. Word has length 10 [2024-11-20 14:45:45,208 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 14:45:45,208 INFO L471 AbstractCegarLoop]: Abstraction has 91 states and 100 transitions. [2024-11-20 14:45:45,208 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1.6) internal successors, (8), 4 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-20 14:45:45,208 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 100 transitions. [2024-11-20 14:45:45,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2024-11-20 14:45:45,208 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 14:45:45,209 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 14:45:45,217 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -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 [2024-11-20 14:45:45,417 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-20 14:45:45,418 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE === [LDV_INIT_LIST_HEADErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, LDV_INIT_LIST_HEADErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, LDV_INIT_LIST_HEADErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2024-11-20 14:45:45,418 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 14:45:45,418 INFO L85 PathProgramCache]: Analyzing trace with hash -1345371264, now seen corresponding path program 1 times [2024-11-20 14:45:45,419 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-11-20 14:45:45,419 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [173088430] [2024-11-20 14:45:45,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 14:45:45,419 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 [2024-11-20 14:45:45,419 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-11-20 14:45:45,421 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -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) [2024-11-20 14:45:45,422 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -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 [2024-11-20 14:45:45,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 14:45:45,482 INFO L255 TraceCheckSpWp]: Trace formula consists of 41 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-11-20 14:45:45,484 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 14:45:45,499 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 [2024-11-20 14:45:45,590 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 14:45:45,590 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-20 14:45:45,591 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-11-20 14:45:45,591 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [173088430] [2024-11-20 14:45:45,591 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [173088430] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 14:45:45,591 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 14:45:45,591 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-20 14:45:45,591 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [326165669] [2024-11-20 14:45:45,591 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 14:45:45,592 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-20 14:45:45,592 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-11-20 14:45:45,592 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-20 14:45:45,592 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-20 14:45:45,593 INFO L87 Difference]: Start difference. First operand 91 states and 100 transitions. Second operand has 7 states, 6 states have (on average 1.5) internal successors, (9), 6 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-20 14:45:45,899 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 14:45:45,900 INFO L93 Difference]: Finished difference Result 90 states and 99 transitions. [2024-11-20 14:45:45,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-20 14:45:45,902 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 1.5) internal successors, (9), 6 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 11 [2024-11-20 14:45:45,903 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 14:45:45,904 INFO L225 Difference]: With dead ends: 90 [2024-11-20 14:45:45,907 INFO L226 Difference]: Without dead ends: 90 [2024-11-20 14:45:45,907 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-11-20 14:45:45,908 INFO L432 NwaCegarLoop]: 83 mSDtfsCounter, 19 mSDsluCounter, 328 mSDsCounter, 0 mSdLazyCounter, 145 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 411 SdHoareTripleChecker+Invalid, 145 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 145 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-20 14:45:45,909 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 411 Invalid, 145 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 145 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-20 14:45:45,909 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2024-11-20 14:45:45,915 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 90. [2024-11-20 14:45:45,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 90 states, 59 states have (on average 1.5254237288135593) internal successors, (90), 82 states have internal predecessors, (90), 4 states have call successors, (4), 3 states have call predecessors, (4), 4 states have return successors, (5), 5 states have call predecessors, (5), 4 states have call successors, (5) [2024-11-20 14:45:45,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 99 transitions. [2024-11-20 14:45:45,917 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 99 transitions. Word has length 11 [2024-11-20 14:45:45,917 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 14:45:45,917 INFO L471 AbstractCegarLoop]: Abstraction has 90 states and 99 transitions. [2024-11-20 14:45:45,917 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 1.5) internal successors, (9), 6 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-20 14:45:45,918 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 99 transitions. [2024-11-20 14:45:45,918 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2024-11-20 14:45:45,918 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 14:45:45,918 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 14:45:45,924 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -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 [2024-11-20 14:45:46,120 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-20 14:45:46,121 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [LDV_INIT_LIST_HEADErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, LDV_INIT_LIST_HEADErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, LDV_INIT_LIST_HEADErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2024-11-20 14:45:46,122 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 14:45:46,122 INFO L85 PathProgramCache]: Analyzing trace with hash 1243137109, now seen corresponding path program 1 times [2024-11-20 14:45:46,123 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-11-20 14:45:46,123 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [710089855] [2024-11-20 14:45:46,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 14:45:46,123 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 [2024-11-20 14:45:46,131 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-11-20 14:45:46,134 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -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) [2024-11-20 14:45:46,135 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -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 [2024-11-20 14:45:46,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 14:45:46,208 INFO L255 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-20 14:45:46,210 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 14:45:46,233 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 14:45:46,234 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-20 14:45:46,234 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-11-20 14:45:46,234 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [710089855] [2024-11-20 14:45:46,234 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [710089855] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 14:45:46,234 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 14:45:46,234 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-20 14:45:46,234 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1195775855] [2024-11-20 14:45:46,235 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 14:45:46,235 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-20 14:45:46,235 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-11-20 14:45:46,236 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-20 14:45:46,236 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-20 14:45:46,236 INFO L87 Difference]: Start difference. First operand 90 states and 99 transitions. Second operand has 5 states, 5 states have (on average 2.0) internal successors, (10), 4 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-20 14:45:46,268 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 14:45:46,268 INFO L93 Difference]: Finished difference Result 90 states and 98 transitions. [2024-11-20 14:45:46,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-20 14:45:46,275 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.0) internal successors, (10), 4 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 12 [2024-11-20 14:45:46,275 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 14:45:46,276 INFO L225 Difference]: With dead ends: 90 [2024-11-20 14:45:46,279 INFO L226 Difference]: Without dead ends: 90 [2024-11-20 14:45:46,279 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-20 14:45:46,280 INFO L432 NwaCegarLoop]: 91 mSDtfsCounter, 15 mSDsluCounter, 252 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 343 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-20 14:45:46,281 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 343 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-20 14:45:46,282 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2024-11-20 14:45:46,287 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 90. [2024-11-20 14:45:46,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 90 states, 59 states have (on average 1.5084745762711864) internal successors, (89), 82 states have internal predecessors, (89), 4 states have call successors, (4), 3 states have call predecessors, (4), 4 states have return successors, (5), 5 states have call predecessors, (5), 4 states have call successors, (5) [2024-11-20 14:45:46,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 98 transitions. [2024-11-20 14:45:46,289 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 98 transitions. Word has length 12 [2024-11-20 14:45:46,289 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 14:45:46,289 INFO L471 AbstractCegarLoop]: Abstraction has 90 states and 98 transitions. [2024-11-20 14:45:46,290 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.0) internal successors, (10), 4 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-20 14:45:46,290 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 98 transitions. [2024-11-20 14:45:46,290 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2024-11-20 14:45:46,290 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 14:45:46,291 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 14:45:46,297 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2024-11-20 14:45:46,493 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-20 14:45:46,494 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [LDV_INIT_LIST_HEADErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, LDV_INIT_LIST_HEADErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, LDV_INIT_LIST_HEADErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2024-11-20 14:45:46,494 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 14:45:46,495 INFO L85 PathProgramCache]: Analyzing trace with hash -1309019852, now seen corresponding path program 1 times [2024-11-20 14:45:46,495 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-11-20 14:45:46,495 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [488269361] [2024-11-20 14:45:46,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 14:45:46,495 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 [2024-11-20 14:45:46,496 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-11-20 14:45:46,498 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -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) [2024-11-20 14:45:46,500 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -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 [2024-11-20 14:45:46,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 14:45:46,562 INFO L255 TraceCheckSpWp]: Trace formula consists of 50 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-20 14:45:46,564 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 14:45:46,597 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 14:45:46,597 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-20 14:45:46,597 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-11-20 14:45:46,597 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [488269361] [2024-11-20 14:45:46,598 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [488269361] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 14:45:46,598 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 14:45:46,598 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-20 14:45:46,600 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2141411818] [2024-11-20 14:45:46,601 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 14:45:46,601 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-20 14:45:46,601 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-11-20 14:45:46,601 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-20 14:45:46,602 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-20 14:45:46,602 INFO L87 Difference]: Start difference. First operand 90 states and 98 transitions. Second operand has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-20 14:45:46,627 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 14:45:46,629 INFO L93 Difference]: Finished difference Result 93 states and 101 transitions. [2024-11-20 14:45:46,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-20 14:45:46,631 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), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 12 [2024-11-20 14:45:46,631 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 14:45:46,631 INFO L225 Difference]: With dead ends: 93 [2024-11-20 14:45:46,632 INFO L226 Difference]: Without dead ends: 93 [2024-11-20 14:45:46,632 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-20 14:45:46,633 INFO L432 NwaCegarLoop]: 92 mSDtfsCounter, 1 mSDsluCounter, 179 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 271 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-20 14:45:46,633 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 271 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-20 14:45:46,634 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2024-11-20 14:45:46,638 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 92. [2024-11-20 14:45:46,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 92 states, 61 states have (on average 1.4918032786885247) internal successors, (91), 84 states have internal predecessors, (91), 4 states have call successors, (4), 3 states have call predecessors, (4), 4 states have return successors, (5), 5 states have call predecessors, (5), 4 states have call successors, (5) [2024-11-20 14:45:46,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 100 transitions. [2024-11-20 14:45:46,644 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 100 transitions. Word has length 12 [2024-11-20 14:45:46,644 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 14:45:46,644 INFO L471 AbstractCegarLoop]: Abstraction has 92 states and 100 transitions. [2024-11-20 14:45:46,644 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-20 14:45:46,644 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 100 transitions. [2024-11-20 14:45:46,645 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2024-11-20 14:45:46,645 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 14:45:46,645 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 14:45:46,650 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -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 [2024-11-20 14:45:46,845 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-20 14:45:46,846 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [LDV_INIT_LIST_HEADErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, LDV_INIT_LIST_HEADErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, LDV_INIT_LIST_HEADErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2024-11-20 14:45:46,846 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 14:45:46,846 INFO L85 PathProgramCache]: Analyzing trace with hash 257401917, now seen corresponding path program 1 times [2024-11-20 14:45:46,846 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-11-20 14:45:46,847 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1678631610] [2024-11-20 14:45:46,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 14:45:46,847 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 [2024-11-20 14:45:46,847 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-11-20 14:45:46,850 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -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) [2024-11-20 14:45:46,851 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -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 [2024-11-20 14:45:46,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 14:45:46,926 INFO L255 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-20 14:45:46,927 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 14:45:46,951 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 14:45:46,951 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-20 14:45:46,951 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-11-20 14:45:46,951 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1678631610] [2024-11-20 14:45:46,951 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1678631610] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 14:45:46,951 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 14:45:46,952 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-20 14:45:46,952 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1964490481] [2024-11-20 14:45:46,952 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 14:45:46,952 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-20 14:45:46,952 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-11-20 14:45:46,953 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-20 14:45:46,953 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-20 14:45:46,953 INFO L87 Difference]: Start difference. First operand 92 states and 100 transitions. Second operand has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-20 14:45:46,980 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 14:45:46,980 INFO L93 Difference]: Finished difference Result 93 states and 101 transitions. [2024-11-20 14:45:46,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-20 14:45:46,981 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 16 [2024-11-20 14:45:46,981 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 14:45:46,982 INFO L225 Difference]: With dead ends: 93 [2024-11-20 14:45:46,982 INFO L226 Difference]: Without dead ends: 93 [2024-11-20 14:45:46,982 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-20 14:45:46,983 INFO L432 NwaCegarLoop]: 92 mSDtfsCounter, 2 mSDsluCounter, 179 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 271 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-20 14:45:46,984 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 271 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-20 14:45:46,984 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2024-11-20 14:45:46,988 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 93. [2024-11-20 14:45:46,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93 states, 62 states have (on average 1.4838709677419355) internal successors, (92), 85 states have internal predecessors, (92), 4 states have call successors, (4), 3 states have call predecessors, (4), 4 states have return successors, (5), 5 states have call predecessors, (5), 4 states have call successors, (5) [2024-11-20 14:45:46,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 101 transitions. [2024-11-20 14:45:46,993 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 101 transitions. Word has length 16 [2024-11-20 14:45:46,993 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 14:45:46,993 INFO L471 AbstractCegarLoop]: Abstraction has 93 states and 101 transitions. [2024-11-20 14:45:46,994 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-20 14:45:46,994 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 101 transitions. [2024-11-20 14:45:46,994 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2024-11-20 14:45:46,994 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 14:45:46,994 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 14:45:46,999 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2024-11-20 14:45:47,195 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-20 14:45:47,195 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_kobject_putErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [LDV_INIT_LIST_HEADErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, LDV_INIT_LIST_HEADErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, LDV_INIT_LIST_HEADErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2024-11-20 14:45:47,196 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 14:45:47,196 INFO L85 PathProgramCache]: Analyzing trace with hash 1046509865, now seen corresponding path program 1 times [2024-11-20 14:45:47,196 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-11-20 14:45:47,196 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [282372179] [2024-11-20 14:45:47,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 14:45:47,196 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 [2024-11-20 14:45:47,197 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-11-20 14:45:47,198 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -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) [2024-11-20 14:45:47,200 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -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 [2024-11-20 14:45:47,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 14:45:47,268 INFO L255 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-20 14:45:47,270 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 14:45:47,353 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 14:45:47,354 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-20 14:45:47,354 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-11-20 14:45:47,354 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [282372179] [2024-11-20 14:45:47,354 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [282372179] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 14:45:47,354 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 14:45:47,355 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-20 14:45:47,355 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1966689310] [2024-11-20 14:45:47,355 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 14:45:47,355 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-20 14:45:47,355 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-11-20 14:45:47,356 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-20 14:45:47,356 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-20 14:45:47,357 INFO L87 Difference]: Start difference. First operand 93 states and 101 transitions. Second operand has 6 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 5 states have internal predecessors, (14), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-20 14:45:47,412 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 14:45:47,413 INFO L93 Difference]: Finished difference Result 102 states and 111 transitions. [2024-11-20 14:45:47,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-20 14:45:47,413 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 5 states have internal predecessors, (14), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 17 [2024-11-20 14:45:47,413 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 14:45:47,414 INFO L225 Difference]: With dead ends: 102 [2024-11-20 14:45:47,414 INFO L226 Difference]: Without dead ends: 102 [2024-11-20 14:45:47,414 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-20 14:45:47,415 INFO L432 NwaCegarLoop]: 90 mSDtfsCounter, 3 mSDsluCounter, 355 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 445 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-20 14:45:47,416 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 445 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-20 14:45:47,416 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2024-11-20 14:45:47,420 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 101. [2024-11-20 14:45:47,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 101 states, 67 states have (on average 1.4477611940298507) internal successors, (97), 91 states have internal predecessors, (97), 6 states have call successors, (6), 4 states have call predecessors, (6), 5 states have return successors, (7), 6 states have call predecessors, (7), 6 states have call successors, (7) [2024-11-20 14:45:47,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 110 transitions. [2024-11-20 14:45:47,422 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 110 transitions. Word has length 17 [2024-11-20 14:45:47,422 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 14:45:47,422 INFO L471 AbstractCegarLoop]: Abstraction has 101 states and 110 transitions. [2024-11-20 14:45:47,422 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 5 states have internal predecessors, (14), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-20 14:45:47,423 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 110 transitions. [2024-11-20 14:45:47,423 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2024-11-20 14:45:47,423 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 14:45:47,423 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 14:45:47,429 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2024-11-20 14:45:47,626 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-20 14:45:47,627 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [LDV_INIT_LIST_HEADErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, LDV_INIT_LIST_HEADErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, LDV_INIT_LIST_HEADErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2024-11-20 14:45:47,627 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 14:45:47,627 INFO L85 PathProgramCache]: Analyzing trace with hash -669734230, now seen corresponding path program 1 times [2024-11-20 14:45:47,628 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-11-20 14:45:47,628 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1579717562] [2024-11-20 14:45:47,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 14:45:47,628 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 [2024-11-20 14:45:47,628 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-11-20 14:45:47,631 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -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) [2024-11-20 14:45:47,632 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -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 [2024-11-20 14:45:47,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 14:45:47,709 INFO L255 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-20 14:45:47,710 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 14:45:47,753 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 14:45:47,754 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-20 14:45:47,812 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 14:45:47,813 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-11-20 14:45:47,813 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1579717562] [2024-11-20 14:45:47,813 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1579717562] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-20 14:45:47,813 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-20 14:45:47,813 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2024-11-20 14:45:47,813 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [575592717] [2024-11-20 14:45:47,813 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-20 14:45:47,814 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-20 14:45:47,814 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-11-20 14:45:47,814 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-20 14:45:47,814 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2024-11-20 14:45:47,814 INFO L87 Difference]: Start difference. First operand 101 states and 110 transitions. Second operand has 8 states, 8 states have (on average 2.5) internal successors, (20), 8 states have internal predecessors, (20), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-20 14:45:47,895 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 14:45:47,896 INFO L93 Difference]: Finished difference Result 104 states and 113 transitions. [2024-11-20 14:45:47,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-20 14:45:47,897 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.5) internal successors, (20), 8 states have internal predecessors, (20), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 17 [2024-11-20 14:45:47,897 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 14:45:47,898 INFO L225 Difference]: With dead ends: 104 [2024-11-20 14:45:47,899 INFO L226 Difference]: Without dead ends: 104 [2024-11-20 14:45:47,899 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2024-11-20 14:45:47,899 INFO L432 NwaCegarLoop]: 92 mSDtfsCounter, 4 mSDsluCounter, 359 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 451 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-20 14:45:47,900 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 451 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-20 14:45:47,904 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2024-11-20 14:45:47,912 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 104. [2024-11-20 14:45:47,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 104 states, 70 states have (on average 1.4285714285714286) internal successors, (100), 94 states have internal predecessors, (100), 6 states have call successors, (6), 4 states have call predecessors, (6), 5 states have return successors, (7), 6 states have call predecessors, (7), 6 states have call successors, (7) [2024-11-20 14:45:47,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 113 transitions. [2024-11-20 14:45:47,918 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 113 transitions. Word has length 17 [2024-11-20 14:45:47,918 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 14:45:47,918 INFO L471 AbstractCegarLoop]: Abstraction has 104 states and 113 transitions. [2024-11-20 14:45:47,918 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.5) internal successors, (20), 8 states have internal predecessors, (20), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-20 14:45:47,919 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 113 transitions. [2024-11-20 14:45:47,919 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2024-11-20 14:45:47,919 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 14:45:47,919 INFO L215 NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 14:45:47,927 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -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 [2024-11-20 14:45:48,120 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-20 14:45:48,120 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [LDV_INIT_LIST_HEADErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, LDV_INIT_LIST_HEADErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, LDV_INIT_LIST_HEADErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2024-11-20 14:45:48,121 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 14:45:48,121 INFO L85 PathProgramCache]: Analyzing trace with hash -644065411, now seen corresponding path program 2 times [2024-11-20 14:45:48,121 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-11-20 14:45:48,121 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [86799215] [2024-11-20 14:45:48,122 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-20 14:45:48,122 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 [2024-11-20 14:45:48,122 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-11-20 14:45:48,125 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -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) [2024-11-20 14:45:48,126 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -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 [2024-11-20 14:45:48,196 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-20 14:45:48,196 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-20 14:45:48,197 INFO L255 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-20 14:45:48,199 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 14:45:48,205 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 [2024-11-20 14:45:48,291 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-20 14:45:48,291 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-20 14:45:48,292 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-11-20 14:45:48,292 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [86799215] [2024-11-20 14:45:48,292 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [86799215] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 14:45:48,292 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 14:45:48,292 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-20 14:45:48,292 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [424901631] [2024-11-20 14:45:48,292 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 14:45:48,293 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-20 14:45:48,293 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-11-20 14:45:48,293 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-20 14:45:48,294 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-20 14:45:48,294 INFO L87 Difference]: Start difference. First operand 104 states and 113 transitions. Second operand has 8 states, 7 states have (on average 2.142857142857143) internal successors, (15), 7 states have internal predecessors, (15), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-20 14:45:48,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 14:45:48,610 INFO L93 Difference]: Finished difference Result 104 states and 113 transitions. [2024-11-20 14:45:48,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-20 14:45:48,610 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.142857142857143) internal successors, (15), 7 states have internal predecessors, (15), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 20 [2024-11-20 14:45:48,611 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 14:45:48,612 INFO L225 Difference]: With dead ends: 104 [2024-11-20 14:45:48,612 INFO L226 Difference]: Without dead ends: 104 [2024-11-20 14:45:48,613 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-11-20 14:45:48,613 INFO L432 NwaCegarLoop]: 83 mSDtfsCounter, 13 mSDsluCounter, 336 mSDsCounter, 0 mSdLazyCounter, 221 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 419 SdHoareTripleChecker+Invalid, 223 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 221 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-20 14:45:48,615 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 419 Invalid, 223 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 221 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-20 14:45:48,616 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2024-11-20 14:45:48,619 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 103. [2024-11-20 14:45:48,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 103 states, 70 states have (on average 1.4142857142857144) internal successors, (99), 93 states have internal predecessors, (99), 6 states have call successors, (6), 4 states have call predecessors, (6), 5 states have return successors, (7), 6 states have call predecessors, (7), 6 states have call successors, (7) [2024-11-20 14:45:48,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 112 transitions. [2024-11-20 14:45:48,621 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 112 transitions. Word has length 20 [2024-11-20 14:45:48,621 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 14:45:48,621 INFO L471 AbstractCegarLoop]: Abstraction has 103 states and 112 transitions. [2024-11-20 14:45:48,621 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 2.142857142857143) internal successors, (15), 7 states have internal predecessors, (15), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-20 14:45:48,621 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 112 transitions. [2024-11-20 14:45:48,622 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2024-11-20 14:45:48,622 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 14:45:48,622 INFO L215 NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 14:45:48,630 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -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 [2024-11-20 14:45:48,826 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-20 14:45:48,827 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [LDV_INIT_LIST_HEADErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, LDV_INIT_LIST_HEADErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, LDV_INIT_LIST_HEADErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2024-11-20 14:45:48,827 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 14:45:48,827 INFO L85 PathProgramCache]: Analyzing trace with hash -644065410, now seen corresponding path program 1 times [2024-11-20 14:45:48,828 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-11-20 14:45:48,828 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [560810052] [2024-11-20 14:45:48,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 14:45:48,828 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 [2024-11-20 14:45:48,828 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-11-20 14:45:48,831 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -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) [2024-11-20 14:45:48,832 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -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 [2024-11-20 14:45:48,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 14:45:48,920 INFO L255 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-20 14:45:48,922 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 14:45:49,012 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 14:45:49,012 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-20 14:45:49,167 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 14:45:49,167 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-11-20 14:45:49,167 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [560810052] [2024-11-20 14:45:49,167 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [560810052] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-20 14:45:49,167 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-20 14:45:49,167 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 14 [2024-11-20 14:45:49,167 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1797022682] [2024-11-20 14:45:49,168 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-20 14:45:49,168 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-20 14:45:49,168 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-11-20 14:45:49,168 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-20 14:45:49,169 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=121, Unknown=0, NotChecked=0, Total=182 [2024-11-20 14:45:49,169 INFO L87 Difference]: Start difference. First operand 103 states and 112 transitions. Second operand has 14 states, 14 states have (on average 1.8571428571428572) internal successors, (26), 14 states have internal predecessors, (26), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-20 14:45:49,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 14:45:49,367 INFO L93 Difference]: Finished difference Result 109 states and 118 transitions. [2024-11-20 14:45:49,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-20 14:45:49,368 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 1.8571428571428572) internal successors, (26), 14 states have internal predecessors, (26), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 20 [2024-11-20 14:45:49,368 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 14:45:49,369 INFO L225 Difference]: With dead ends: 109 [2024-11-20 14:45:49,369 INFO L226 Difference]: Without dead ends: 109 [2024-11-20 14:45:49,369 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=131, Invalid=211, Unknown=0, NotChecked=0, Total=342 [2024-11-20 14:45:49,370 INFO L432 NwaCegarLoop]: 91 mSDtfsCounter, 14 mSDsluCounter, 533 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 624 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-20 14:45:49,370 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 624 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-20 14:45:49,370 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2024-11-20 14:45:49,374 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 109. [2024-11-20 14:45:49,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 109 states, 76 states have (on average 1.381578947368421) internal successors, (105), 99 states have internal predecessors, (105), 6 states have call successors, (6), 4 states have call predecessors, (6), 5 states have return successors, (7), 6 states have call predecessors, (7), 6 states have call successors, (7) [2024-11-20 14:45:49,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 118 transitions. [2024-11-20 14:45:49,375 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 118 transitions. Word has length 20 [2024-11-20 14:45:49,375 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 14:45:49,375 INFO L471 AbstractCegarLoop]: Abstraction has 109 states and 118 transitions. [2024-11-20 14:45:49,375 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 1.8571428571428572) internal successors, (26), 14 states have internal predecessors, (26), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-20 14:45:49,375 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 118 transitions. [2024-11-20 14:45:49,376 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2024-11-20 14:45:49,376 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 14:45:49,376 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 14:45:49,383 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -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 [2024-11-20 14:45:49,577 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-20 14:45:49,577 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [LDV_INIT_LIST_HEADErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, LDV_INIT_LIST_HEADErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, LDV_INIT_LIST_HEADErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2024-11-20 14:45:49,577 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 14:45:49,578 INFO L85 PathProgramCache]: Analyzing trace with hash -590186857, now seen corresponding path program 1 times [2024-11-20 14:45:49,578 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-11-20 14:45:49,578 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [683794923] [2024-11-20 14:45:49,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 14:45:49,578 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 [2024-11-20 14:45:49,578 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-11-20 14:45:49,585 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -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) [2024-11-20 14:45:49,586 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -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 [2024-11-20 14:45:49,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 14:45:49,654 INFO L255 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-20 14:45:49,656 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 14:45:49,707 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-20 14:45:49,707 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-20 14:45:49,707 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-11-20 14:45:49,707 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [683794923] [2024-11-20 14:45:49,708 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [683794923] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 14:45:49,708 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 14:45:49,708 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-20 14:45:49,708 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1269761825] [2024-11-20 14:45:49,708 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 14:45:49,708 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-20 14:45:49,708 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-11-20 14:45:49,709 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-20 14:45:49,709 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-20 14:45:49,709 INFO L87 Difference]: Start difference. First operand 109 states and 118 transitions. Second operand has 4 states, 3 states have (on average 5.333333333333333) internal successors, (16), 4 states have internal predecessors, (16), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2024-11-20 14:45:49,815 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 14:45:49,815 INFO L93 Difference]: Finished difference Result 115 states and 124 transitions. [2024-11-20 14:45:49,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-20 14:45:49,816 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 5.333333333333333) internal successors, (16), 4 states have internal predecessors, (16), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 25 [2024-11-20 14:45:49,816 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 14:45:49,817 INFO L225 Difference]: With dead ends: 115 [2024-11-20 14:45:49,817 INFO L226 Difference]: Without dead ends: 99 [2024-11-20 14:45:49,817 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-20 14:45:49,818 INFO L432 NwaCegarLoop]: 77 mSDtfsCounter, 31 mSDsluCounter, 99 mSDsCounter, 0 mSdLazyCounter, 73 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 176 SdHoareTripleChecker+Invalid, 76 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 73 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-20 14:45:49,818 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 176 Invalid, 76 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 73 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-20 14:45:49,819 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2024-11-20 14:45:49,822 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 95. [2024-11-20 14:45:49,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 95 states, 66 states have (on average 1.4242424242424243) internal successors, (94), 88 states have internal predecessors, (94), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-11-20 14:45:49,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 102 transitions. [2024-11-20 14:45:49,824 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 102 transitions. Word has length 25 [2024-11-20 14:45:49,824 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 14:45:49,824 INFO L471 AbstractCegarLoop]: Abstraction has 95 states and 102 transitions. [2024-11-20 14:45:49,824 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 5.333333333333333) internal successors, (16), 4 states have internal predecessors, (16), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2024-11-20 14:45:49,824 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 102 transitions. [2024-11-20 14:45:49,825 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2024-11-20 14:45:49,825 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 14:45:49,825 INFO L215 NwaCegarLoop]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 14:45:49,832 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -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 [2024-11-20 14:45:50,026 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-20 14:45:50,026 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [LDV_INIT_LIST_HEADErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, LDV_INIT_LIST_HEADErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, LDV_INIT_LIST_HEADErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2024-11-20 14:45:50,027 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 14:45:50,027 INFO L85 PathProgramCache]: Analyzing trace with hash -1356949410, now seen corresponding path program 2 times [2024-11-20 14:45:50,027 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-11-20 14:45:50,027 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1347482843] [2024-11-20 14:45:50,028 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-20 14:45:50,028 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 [2024-11-20 14:45:50,028 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-11-20 14:45:50,029 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -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) [2024-11-20 14:45:50,030 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -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 [2024-11-20 14:45:50,122 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-20 14:45:50,122 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-20 14:45:50,123 INFO L255 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 23 conjuncts are in the unsatisfiable core [2024-11-20 14:45:50,126 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 14:45:50,137 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 [2024-11-20 14:45:50,346 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2024-11-20 14:45:50,347 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-20 14:45:50,347 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-11-20 14:45:50,347 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1347482843] [2024-11-20 14:45:50,347 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1347482843] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 14:45:50,347 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 14:45:50,347 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-20 14:45:50,347 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2043622336] [2024-11-20 14:45:50,347 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 14:45:50,348 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-20 14:45:50,348 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-11-20 14:45:50,348 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-20 14:45:50,348 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2024-11-20 14:45:50,348 INFO L87 Difference]: Start difference. First operand 95 states and 102 transitions. Second operand has 9 states, 8 states have (on average 1.875) internal successors, (15), 8 states have internal predecessors, (15), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-20 14:45:50,655 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 14:45:50,656 INFO L93 Difference]: Finished difference Result 95 states and 102 transitions. [2024-11-20 14:45:50,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-20 14:45:50,656 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 1.875) internal successors, (15), 8 states have internal predecessors, (15), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 26 [2024-11-20 14:45:50,656 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 14:45:50,657 INFO L225 Difference]: With dead ends: 95 [2024-11-20 14:45:50,657 INFO L226 Difference]: Without dead ends: 95 [2024-11-20 14:45:50,657 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-11-20 14:45:50,658 INFO L432 NwaCegarLoop]: 80 mSDtfsCounter, 11 mSDsluCounter, 439 mSDsCounter, 0 mSdLazyCounter, 190 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 519 SdHoareTripleChecker+Invalid, 192 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 190 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-20 14:45:50,658 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 519 Invalid, 192 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 190 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-20 14:45:50,658 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2024-11-20 14:45:50,660 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 94. [2024-11-20 14:45:50,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 94 states, 66 states have (on average 1.4090909090909092) internal successors, (93), 87 states have internal predecessors, (93), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-11-20 14:45:50,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 101 transitions. [2024-11-20 14:45:50,661 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 101 transitions. Word has length 26 [2024-11-20 14:45:50,661 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 14:45:50,662 INFO L471 AbstractCegarLoop]: Abstraction has 94 states and 101 transitions. [2024-11-20 14:45:50,662 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 1.875) internal successors, (15), 8 states have internal predecessors, (15), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-20 14:45:50,662 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 101 transitions. [2024-11-20 14:45:50,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2024-11-20 14:45:50,662 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 14:45:50,663 INFO L215 NwaCegarLoop]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 14:45:50,667 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -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)] Ended with exit code 0 [2024-11-20 14:45:50,863 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-20 14:45:50,864 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [LDV_INIT_LIST_HEADErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, LDV_INIT_LIST_HEADErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, LDV_INIT_LIST_HEADErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2024-11-20 14:45:50,864 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 14:45:50,864 INFO L85 PathProgramCache]: Analyzing trace with hash 1640168925, now seen corresponding path program 1 times [2024-11-20 14:45:50,864 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-11-20 14:45:50,864 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [739747356] [2024-11-20 14:45:50,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 14:45:50,865 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 [2024-11-20 14:45:50,865 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-11-20 14:45:50,879 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -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) [2024-11-20 14:45:50,880 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -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 [2024-11-20 14:45:50,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 14:45:50,994 INFO L255 TraceCheckSpWp]: Trace formula consists of 184 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-11-20 14:45:50,996 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 14:45:51,190 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 14:45:51,191 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-20 14:45:51,529 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 14:45:51,530 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-11-20 14:45:51,530 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [739747356] [2024-11-20 14:45:51,530 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [739747356] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-20 14:45:51,530 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-20 14:45:51,530 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 26 [2024-11-20 14:45:51,530 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [201633124] [2024-11-20 14:45:51,531 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-20 14:45:51,531 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-11-20 14:45:51,531 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-11-20 14:45:51,532 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-11-20 14:45:51,532 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=178, Invalid=472, Unknown=0, NotChecked=0, Total=650 [2024-11-20 14:45:51,532 INFO L87 Difference]: Start difference. First operand 94 states and 101 transitions. Second operand has 26 states, 26 states have (on average 1.5384615384615385) internal successors, (40), 26 states have internal predecessors, (40), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-20 14:45:51,916 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 14:45:51,917 INFO L93 Difference]: Finished difference Result 100 states and 107 transitions. [2024-11-20 14:45:51,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-11-20 14:45:51,918 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 1.5384615384615385) internal successors, (40), 26 states have internal predecessors, (40), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 28 [2024-11-20 14:45:51,918 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 14:45:51,919 INFO L225 Difference]: With dead ends: 100 [2024-11-20 14:45:51,919 INFO L226 Difference]: Without dead ends: 100 [2024-11-20 14:45:51,919 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 193 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=278, Invalid=652, Unknown=0, NotChecked=0, Total=930 [2024-11-20 14:45:51,921 INFO L432 NwaCegarLoop]: 88 mSDtfsCounter, 7 mSDsluCounter, 1116 mSDsCounter, 0 mSdLazyCounter, 147 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 1204 SdHoareTripleChecker+Invalid, 147 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 147 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-20 14:45:51,922 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 1204 Invalid, 147 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 147 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-20 14:45:51,922 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2024-11-20 14:45:51,924 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 100. [2024-11-20 14:45:51,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 100 states, 72 states have (on average 1.375) internal successors, (99), 93 states have internal predecessors, (99), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-11-20 14:45:51,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 107 transitions. [2024-11-20 14:45:51,925 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 107 transitions. Word has length 28 [2024-11-20 14:45:51,925 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 14:45:51,925 INFO L471 AbstractCegarLoop]: Abstraction has 100 states and 107 transitions. [2024-11-20 14:45:51,925 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 1.5384615384615385) internal successors, (40), 26 states have internal predecessors, (40), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-20 14:45:51,926 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 107 transitions. [2024-11-20 14:45:51,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2024-11-20 14:45:51,926 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 14:45:51,926 INFO L215 NwaCegarLoop]: trace histogram [16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 14:45:51,933 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2024-11-20 14:45:52,127 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-20 14:45:52,127 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [LDV_INIT_LIST_HEADErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, LDV_INIT_LIST_HEADErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, LDV_INIT_LIST_HEADErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2024-11-20 14:45:52,127 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 14:45:52,128 INFO L85 PathProgramCache]: Analyzing trace with hash 1827036861, now seen corresponding path program 2 times [2024-11-20 14:45:52,128 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-11-20 14:45:52,128 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [846594488] [2024-11-20 14:45:52,128 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-20 14:45:52,128 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 [2024-11-20 14:45:52,128 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-11-20 14:45:52,129 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -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) [2024-11-20 14:45:52,130 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -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 [2024-11-20 14:45:52,227 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-20 14:45:52,227 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-20 14:45:52,229 INFO L255 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-20 14:45:52,231 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 14:45:52,306 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2024-11-20 14:45:52,307 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-20 14:45:52,307 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-11-20 14:45:52,307 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [846594488] [2024-11-20 14:45:52,307 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [846594488] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 14:45:52,307 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 14:45:52,307 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-20 14:45:52,307 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1069894416] [2024-11-20 14:45:52,307 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 14:45:52,308 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-20 14:45:52,308 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-11-20 14:45:52,308 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-20 14:45:52,308 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-20 14:45:52,308 INFO L87 Difference]: Start difference. First operand 100 states and 107 transitions. Second operand has 6 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 5 states have internal predecessors, (17), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-20 14:45:52,338 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 14:45:52,338 INFO L93 Difference]: Finished difference Result 100 states and 106 transitions. [2024-11-20 14:45:52,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-20 14:45:52,339 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 5 states have internal predecessors, (17), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 34 [2024-11-20 14:45:52,339 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 14:45:52,340 INFO L225 Difference]: With dead ends: 100 [2024-11-20 14:45:52,340 INFO L226 Difference]: Without dead ends: 100 [2024-11-20 14:45:52,340 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-20 14:45:52,341 INFO L432 NwaCegarLoop]: 85 mSDtfsCounter, 7 mSDsluCounter, 323 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 408 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-20 14:45:52,341 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 408 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-20 14:45:52,341 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2024-11-20 14:45:52,343 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 100. [2024-11-20 14:45:52,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 100 states, 72 states have (on average 1.3611111111111112) internal successors, (98), 93 states have internal predecessors, (98), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-11-20 14:45:52,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 106 transitions. [2024-11-20 14:45:52,344 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 106 transitions. Word has length 34 [2024-11-20 14:45:52,344 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 14:45:52,344 INFO L471 AbstractCegarLoop]: Abstraction has 100 states and 106 transitions. [2024-11-20 14:45:52,344 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 5 states have internal predecessors, (17), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-20 14:45:52,344 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 106 transitions. [2024-11-20 14:45:52,345 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2024-11-20 14:45:52,345 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 14:45:52,345 INFO L215 NwaCegarLoop]: trace histogram [16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 14:45:52,349 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -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 [2024-11-20 14:45:52,548 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-20 14:45:52,549 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting LDV_INIT_LIST_HEADErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [LDV_INIT_LIST_HEADErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, LDV_INIT_LIST_HEADErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, LDV_INIT_LIST_HEADErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2024-11-20 14:45:52,549 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 14:45:52,549 INFO L85 PathProgramCache]: Analyzing trace with hash 589502054, now seen corresponding path program 1 times [2024-11-20 14:45:52,549 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-11-20 14:45:52,550 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [623113804] [2024-11-20 14:45:52,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 14:45:52,550 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 [2024-11-20 14:45:52,550 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-11-20 14:45:52,553 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -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) [2024-11-20 14:45:52,554 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -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 [2024-11-20 14:45:52,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 14:45:52,722 INFO L255 TraceCheckSpWp]: Trace formula consists of 272 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-20 14:45:52,724 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 14:45:52,728 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 [2024-11-20 14:45:52,839 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2024-11-20 14:45:52,839 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-20 14:45:52,840 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-11-20 14:45:52,840 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [623113804] [2024-11-20 14:45:52,840 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [623113804] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 14:45:52,840 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 14:45:52,840 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-20 14:45:52,840 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1161348003] [2024-11-20 14:45:52,840 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 14:45:52,840 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-20 14:45:52,841 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-11-20 14:45:52,841 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-20 14:45:52,841 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2024-11-20 14:45:52,841 INFO L87 Difference]: Start difference. First operand 100 states and 106 transitions. Second operand has 9 states, 8 states have (on average 2.25) internal successors, (18), 7 states have internal predecessors, (18), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-20 14:45:53,126 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 14:45:53,126 INFO L93 Difference]: Finished difference Result 99 states and 105 transitions. [2024-11-20 14:45:53,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-20 14:45:53,126 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.25) internal successors, (18), 7 states have internal predecessors, (18), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 36 [2024-11-20 14:45:53,127 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 14:45:53,127 INFO L225 Difference]: With dead ends: 99 [2024-11-20 14:45:53,127 INFO L226 Difference]: Without dead ends: 99 [2024-11-20 14:45:53,127 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-11-20 14:45:53,128 INFO L432 NwaCegarLoop]: 73 mSDtfsCounter, 14 mSDsluCounter, 359 mSDsCounter, 0 mSdLazyCounter, 247 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 432 SdHoareTripleChecker+Invalid, 250 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 247 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-20 14:45:53,128 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 432 Invalid, 250 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 247 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-20 14:45:53,129 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2024-11-20 14:45:53,130 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 98. [2024-11-20 14:45:53,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98 states, 72 states have (on average 1.3333333333333333) internal successors, (96), 91 states have internal predecessors, (96), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-11-20 14:45:53,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 104 transitions. [2024-11-20 14:45:53,131 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 104 transitions. Word has length 36 [2024-11-20 14:45:53,132 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 14:45:53,132 INFO L471 AbstractCegarLoop]: Abstraction has 98 states and 104 transitions. [2024-11-20 14:45:53,132 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 2.25) internal successors, (18), 7 states have internal predecessors, (18), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-20 14:45:53,132 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 104 transitions. [2024-11-20 14:45:53,133 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2024-11-20 14:45:53,133 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 14:45:53,133 INFO L215 NwaCegarLoop]: trace histogram [16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 14:45:53,139 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -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 [2024-11-20 14:45:53,333 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-20 14:45:53,334 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting LDV_INIT_LIST_HEADErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [LDV_INIT_LIST_HEADErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, LDV_INIT_LIST_HEADErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, LDV_INIT_LIST_HEADErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2024-11-20 14:45:53,334 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 14:45:53,334 INFO L85 PathProgramCache]: Analyzing trace with hash 589502055, now seen corresponding path program 1 times [2024-11-20 14:45:53,334 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-11-20 14:45:53,335 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1477075579] [2024-11-20 14:45:53,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 14:45:53,335 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 [2024-11-20 14:45:53,335 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-11-20 14:45:53,336 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -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) [2024-11-20 14:45:53,337 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -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 [2024-11-20 14:45:53,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 14:45:53,525 INFO L255 TraceCheckSpWp]: Trace formula consists of 272 conjuncts, 23 conjuncts are in the unsatisfiable core [2024-11-20 14:45:53,527 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 14:45:53,543 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 [2024-11-20 14:45:53,790 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2024-11-20 14:45:53,790 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-20 14:45:53,790 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-11-20 14:45:53,790 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1477075579] [2024-11-20 14:45:53,790 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1477075579] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 14:45:53,790 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 14:45:53,790 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-20 14:45:53,790 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [513811502] [2024-11-20 14:45:53,790 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 14:45:53,791 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-20 14:45:53,791 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-11-20 14:45:53,791 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-20 14:45:53,791 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2024-11-20 14:45:53,791 INFO L87 Difference]: Start difference. First operand 98 states and 104 transitions. Second operand has 10 states, 9 states have (on average 2.0) internal successors, (18), 8 states have internal predecessors, (18), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-20 14:45:54,097 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 14:45:54,098 INFO L93 Difference]: Finished difference Result 97 states and 103 transitions. [2024-11-20 14:45:54,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-20 14:45:54,101 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.0) internal successors, (18), 8 states have internal predecessors, (18), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 36 [2024-11-20 14:45:54,101 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 14:45:54,102 INFO L225 Difference]: With dead ends: 97 [2024-11-20 14:45:54,102 INFO L226 Difference]: Without dead ends: 97 [2024-11-20 14:45:54,103 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2024-11-20 14:45:54,103 INFO L432 NwaCegarLoop]: 72 mSDtfsCounter, 12 mSDsluCounter, 473 mSDsCounter, 0 mSdLazyCounter, 206 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 545 SdHoareTripleChecker+Invalid, 209 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 206 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-20 14:45:54,103 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 545 Invalid, 209 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 206 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-20 14:45:54,104 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2024-11-20 14:45:54,106 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 96. [2024-11-20 14:45:54,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 96 states, 72 states have (on average 1.3055555555555556) internal successors, (94), 89 states have internal predecessors, (94), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-11-20 14:45:54,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 102 transitions. [2024-11-20 14:45:54,108 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 102 transitions. Word has length 36 [2024-11-20 14:45:54,108 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 14:45:54,108 INFO L471 AbstractCegarLoop]: Abstraction has 96 states and 102 transitions. [2024-11-20 14:45:54,108 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 2.0) internal successors, (18), 8 states have internal predecessors, (18), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-20 14:45:54,108 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 102 transitions. [2024-11-20 14:45:54,110 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2024-11-20 14:45:54,110 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 14:45:54,110 INFO L215 NwaCegarLoop]: trace histogram [16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 14:45:54,116 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -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 [2024-11-20 14:45:54,311 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-20 14:45:54,311 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [LDV_INIT_LIST_HEADErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, LDV_INIT_LIST_HEADErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, LDV_INIT_LIST_HEADErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2024-11-20 14:45:54,312 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 14:45:54,312 INFO L85 PathProgramCache]: Analyzing trace with hash 538860073, now seen corresponding path program 1 times [2024-11-20 14:45:54,312 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-11-20 14:45:54,312 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1326173296] [2024-11-20 14:45:54,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 14:45:54,312 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 [2024-11-20 14:45:54,312 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-11-20 14:45:54,313 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -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) [2024-11-20 14:45:54,314 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -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 [2024-11-20 14:45:54,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 14:45:54,484 INFO L255 TraceCheckSpWp]: Trace formula consists of 256 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-20 14:45:54,486 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 14:45:54,561 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2024-11-20 14:45:54,561 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-20 14:45:54,562 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-11-20 14:45:54,562 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1326173296] [2024-11-20 14:45:54,562 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1326173296] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 14:45:54,562 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 14:45:54,562 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-20 14:45:54,562 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [134748338] [2024-11-20 14:45:54,562 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 14:45:54,563 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-20 14:45:54,563 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-11-20 14:45:54,563 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-20 14:45:54,563 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-20 14:45:54,563 INFO L87 Difference]: Start difference. First operand 96 states and 102 transitions. Second operand has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 6 states have internal predecessors, (19), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-20 14:45:54,621 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 14:45:54,621 INFO L93 Difference]: Finished difference Result 96 states and 101 transitions. [2024-11-20 14:45:54,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-20 14:45:54,622 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 6 states have internal predecessors, (19), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 36 [2024-11-20 14:45:54,622 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 14:45:54,623 INFO L225 Difference]: With dead ends: 96 [2024-11-20 14:45:54,623 INFO L226 Difference]: Without dead ends: 96 [2024-11-20 14:45:54,623 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-11-20 14:45:54,624 INFO L432 NwaCegarLoop]: 79 mSDtfsCounter, 9 mSDsluCounter, 376 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 455 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-20 14:45:54,624 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 455 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-20 14:45:54,624 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2024-11-20 14:45:54,629 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 96. [2024-11-20 14:45:54,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 96 states, 72 states have (on average 1.2916666666666667) internal successors, (93), 88 states have internal predecessors, (93), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-11-20 14:45:54,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 101 transitions. [2024-11-20 14:45:54,630 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 101 transitions. Word has length 36 [2024-11-20 14:45:54,631 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 14:45:54,631 INFO L471 AbstractCegarLoop]: Abstraction has 96 states and 101 transitions. [2024-11-20 14:45:54,631 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 6 states have internal predecessors, (19), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-20 14:45:54,631 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 101 transitions. [2024-11-20 14:45:54,631 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2024-11-20 14:45:54,631 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 14:45:54,632 INFO L215 NwaCegarLoop]: trace histogram [16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 14:45:54,640 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -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 [2024-11-20 14:45:54,838 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-20 14:45:54,839 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [LDV_INIT_LIST_HEADErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, LDV_INIT_LIST_HEADErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, LDV_INIT_LIST_HEADErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2024-11-20 14:45:54,839 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 14:45:54,839 INFO L85 PathProgramCache]: Analyzing trace with hash -1073517498, now seen corresponding path program 1 times [2024-11-20 14:45:54,840 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-11-20 14:45:54,840 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [54043688] [2024-11-20 14:45:54,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 14:45:54,840 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 [2024-11-20 14:45:54,840 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-11-20 14:45:54,842 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -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) [2024-11-20 14:45:54,850 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -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 [2024-11-20 14:45:55,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 14:45:55,067 INFO L255 TraceCheckSpWp]: Trace formula consists of 320 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-20 14:45:55,071 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 14:45:55,077 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 [2024-11-20 14:45:55,244 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2024-11-20 14:45:55,244 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-20 14:45:55,244 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-11-20 14:45:55,244 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [54043688] [2024-11-20 14:45:55,244 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [54043688] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 14:45:55,244 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 14:45:55,245 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-20 14:45:55,245 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [784466145] [2024-11-20 14:45:55,245 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 14:45:55,245 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-20 14:45:55,245 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-11-20 14:45:55,246 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-20 14:45:55,246 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-11-20 14:45:55,246 INFO L87 Difference]: Start difference. First operand 96 states and 101 transitions. Second operand has 9 states, 8 states have (on average 3.125) internal successors, (25), 8 states have internal predecessors, (25), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-20 14:45:55,553 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 14:45:55,553 INFO L93 Difference]: Finished difference Result 107 states and 115 transitions. [2024-11-20 14:45:55,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-20 14:45:55,555 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.125) internal successors, (25), 8 states have internal predecessors, (25), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 44 [2024-11-20 14:45:55,555 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 14:45:55,556 INFO L225 Difference]: With dead ends: 107 [2024-11-20 14:45:55,556 INFO L226 Difference]: Without dead ends: 107 [2024-11-20 14:45:55,556 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 35 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-11-20 14:45:55,557 INFO L432 NwaCegarLoop]: 57 mSDtfsCounter, 57 mSDsluCounter, 228 mSDsCounter, 0 mSdLazyCounter, 237 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 285 SdHoareTripleChecker+Invalid, 240 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 237 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-20 14:45:55,557 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [57 Valid, 285 Invalid, 240 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 237 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-20 14:45:55,558 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2024-11-20 14:45:55,561 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 94. [2024-11-20 14:45:55,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 94 states, 72 states have (on average 1.2638888888888888) internal successors, (91), 86 states have internal predecessors, (91), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-11-20 14:45:55,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 99 transitions. [2024-11-20 14:45:55,562 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 99 transitions. Word has length 44 [2024-11-20 14:45:55,563 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 14:45:55,564 INFO L471 AbstractCegarLoop]: Abstraction has 94 states and 99 transitions. [2024-11-20 14:45:55,564 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 3.125) internal successors, (25), 8 states have internal predecessors, (25), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-20 14:45:55,564 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 99 transitions. [2024-11-20 14:45:55,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2024-11-20 14:45:55,564 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 14:45:55,564 INFO L215 NwaCegarLoop]: trace histogram [16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 14:45:55,588 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2024-11-20 14:45:55,769 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-20 14:45:55,770 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [LDV_INIT_LIST_HEADErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, LDV_INIT_LIST_HEADErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, LDV_INIT_LIST_HEADErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2024-11-20 14:45:55,770 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 14:45:55,770 INFO L85 PathProgramCache]: Analyzing trace with hash -1073517497, now seen corresponding path program 1 times [2024-11-20 14:45:55,771 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-11-20 14:45:55,771 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [25334233] [2024-11-20 14:45:55,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 14:45:55,771 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 [2024-11-20 14:45:55,771 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-11-20 14:45:55,774 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -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) [2024-11-20 14:45:55,775 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -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 [2024-11-20 14:45:55,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 14:45:55,967 INFO L255 TraceCheckSpWp]: Trace formula consists of 320 conjuncts, 27 conjuncts are in the unsatisfiable core [2024-11-20 14:45:55,970 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 14:45:55,978 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 [2024-11-20 14:45:56,220 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2024-11-20 14:45:56,220 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-20 14:45:56,220 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-11-20 14:45:56,220 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [25334233] [2024-11-20 14:45:56,220 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [25334233] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 14:45:56,220 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 14:45:56,221 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-20 14:45:56,221 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [898445364] [2024-11-20 14:45:56,221 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 14:45:56,221 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-20 14:45:56,221 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-11-20 14:45:56,222 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-20 14:45:56,222 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-11-20 14:45:56,222 INFO L87 Difference]: Start difference. First operand 94 states and 99 transitions. Second operand has 10 states, 9 states have (on average 2.7777777777777777) internal successors, (25), 9 states have internal predecessors, (25), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-20 14:45:56,493 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 14:45:56,494 INFO L93 Difference]: Finished difference Result 92 states and 97 transitions. [2024-11-20 14:45:56,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-20 14:45:56,494 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.7777777777777777) internal successors, (25), 9 states have internal predecessors, (25), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 44 [2024-11-20 14:45:56,495 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 14:45:56,495 INFO L225 Difference]: With dead ends: 92 [2024-11-20 14:45:56,495 INFO L226 Difference]: Without dead ends: 92 [2024-11-20 14:45:56,496 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 34 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-11-20 14:45:56,496 INFO L432 NwaCegarLoop]: 58 mSDtfsCounter, 61 mSDsluCounter, 345 mSDsCounter, 0 mSdLazyCounter, 209 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 403 SdHoareTripleChecker+Invalid, 210 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 209 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-20 14:45:56,496 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [61 Valid, 403 Invalid, 210 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 209 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-20 14:45:56,497 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2024-11-20 14:45:56,498 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 92. [2024-11-20 14:45:56,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 92 states, 72 states have (on average 1.2361111111111112) internal successors, (89), 84 states have internal predecessors, (89), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-11-20 14:45:56,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 97 transitions. [2024-11-20 14:45:56,499 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 97 transitions. Word has length 44 [2024-11-20 14:45:56,499 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 14:45:56,500 INFO L471 AbstractCegarLoop]: Abstraction has 92 states and 97 transitions. [2024-11-20 14:45:56,500 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 2.7777777777777777) internal successors, (25), 9 states have internal predecessors, (25), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-20 14:45:56,500 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 97 transitions. [2024-11-20 14:45:56,500 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2024-11-20 14:45:56,500 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 14:45:56,501 INFO L215 NwaCegarLoop]: trace histogram [16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 14:45:56,507 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (20)] Forceful destruction successful, exit code 0 [2024-11-20 14:45:56,701 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-20 14:45:56,702 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ldv_kobject_putErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [LDV_INIT_LIST_HEADErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, LDV_INIT_LIST_HEADErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, LDV_INIT_LIST_HEADErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2024-11-20 14:45:56,702 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 14:45:56,702 INFO L85 PathProgramCache]: Analyzing trace with hash -1866262185, now seen corresponding path program 1 times [2024-11-20 14:45:56,702 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-11-20 14:45:56,702 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1855383948] [2024-11-20 14:45:56,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 14:45:56,703 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 [2024-11-20 14:45:56,703 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-11-20 14:45:56,704 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -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) [2024-11-20 14:45:56,705 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -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 [2024-11-20 14:45:56,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 14:45:56,916 INFO L255 TraceCheckSpWp]: Trace formula consists of 351 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-20 14:45:56,917 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 14:45:56,981 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2024-11-20 14:45:56,981 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-20 14:45:56,981 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-11-20 14:45:56,981 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1855383948] [2024-11-20 14:45:56,981 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1855383948] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 14:45:56,981 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 14:45:56,981 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-20 14:45:56,981 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1704415690] [2024-11-20 14:45:56,981 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 14:45:56,982 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-20 14:45:56,982 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-11-20 14:45:56,982 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-20 14:45:56,982 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-20 14:45:56,982 INFO L87 Difference]: Start difference. First operand 92 states and 97 transitions. Second operand has 7 states, 7 states have (on average 4.142857142857143) internal successors, (29), 6 states have internal predecessors, (29), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-20 14:45:57,017 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 14:45:57,018 INFO L93 Difference]: Finished difference Result 92 states and 96 transitions. [2024-11-20 14:45:57,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-20 14:45:57,018 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 4.142857142857143) internal successors, (29), 6 states have internal predecessors, (29), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 49 [2024-11-20 14:45:57,018 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 14:45:57,019 INFO L225 Difference]: With dead ends: 92 [2024-11-20 14:45:57,019 INFO L226 Difference]: Without dead ends: 92 [2024-11-20 14:45:57,019 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-20 14:45:57,019 INFO L432 NwaCegarLoop]: 73 mSDtfsCounter, 7 mSDsluCounter, 342 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 415 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-20 14:45:57,020 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 415 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-20 14:45:57,020 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2024-11-20 14:45:57,021 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 92. [2024-11-20 14:45:57,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 92 states, 72 states have (on average 1.2222222222222223) internal successors, (88), 84 states have internal predecessors, (88), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-11-20 14:45:57,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 96 transitions. [2024-11-20 14:45:57,022 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 96 transitions. Word has length 49 [2024-11-20 14:45:57,022 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 14:45:57,022 INFO L471 AbstractCegarLoop]: Abstraction has 92 states and 96 transitions. [2024-11-20 14:45:57,022 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 4.142857142857143) internal successors, (29), 6 states have internal predecessors, (29), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-20 14:45:57,023 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 96 transitions. [2024-11-20 14:45:57,023 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2024-11-20 14:45:57,023 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 14:45:57,023 INFO L215 NwaCegarLoop]: trace histogram [16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 14:45:57,030 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -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 [2024-11-20 14:45:57,223 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-20 14:45:57,224 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ldv_kobject_putErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [LDV_INIT_LIST_HEADErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, LDV_INIT_LIST_HEADErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, LDV_INIT_LIST_HEADErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2024-11-20 14:45:57,224 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 14:45:57,224 INFO L85 PathProgramCache]: Analyzing trace with hash 145356145, now seen corresponding path program 1 times [2024-11-20 14:45:57,224 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-11-20 14:45:57,225 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [729922143] [2024-11-20 14:45:57,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 14:45:57,225 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 [2024-11-20 14:45:57,225 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-11-20 14:45:57,226 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -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) [2024-11-20 14:45:57,227 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -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 [2024-11-20 14:45:57,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 14:45:57,445 INFO L255 TraceCheckSpWp]: Trace formula consists of 391 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-11-20 14:45:57,447 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 14:45:57,454 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 [2024-11-20 14:45:57,613 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2024-11-20 14:45:57,614 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-20 14:45:57,614 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-11-20 14:45:57,614 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [729922143] [2024-11-20 14:45:57,614 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [729922143] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 14:45:57,614 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 14:45:57,614 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-20 14:45:57,614 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [358476776] [2024-11-20 14:45:57,615 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 14:45:57,615 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-20 14:45:57,615 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-11-20 14:45:57,615 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-20 14:45:57,616 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-11-20 14:45:57,616 INFO L87 Difference]: Start difference. First operand 92 states and 96 transitions. Second operand has 11 states, 10 states have (on average 3.5) internal successors, (35), 9 states have internal predecessors, (35), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-20 14:45:57,936 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 14:45:57,936 INFO L93 Difference]: Finished difference Result 124 states and 131 transitions. [2024-11-20 14:45:57,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-20 14:45:57,937 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 3.5) internal successors, (35), 9 states have internal predecessors, (35), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 55 [2024-11-20 14:45:57,937 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 14:45:57,938 INFO L225 Difference]: With dead ends: 124 [2024-11-20 14:45:57,938 INFO L226 Difference]: Without dead ends: 124 [2024-11-20 14:45:57,938 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 44 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2024-11-20 14:45:57,939 INFO L432 NwaCegarLoop]: 52 mSDtfsCounter, 71 mSDsluCounter, 312 mSDsCounter, 0 mSdLazyCounter, 316 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 71 SdHoareTripleChecker+Valid, 364 SdHoareTripleChecker+Invalid, 324 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 316 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-20 14:45:57,939 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [71 Valid, 364 Invalid, 324 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 316 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-20 14:45:57,940 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2024-11-20 14:45:57,944 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 108. [2024-11-20 14:45:57,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 108 states, 86 states have (on average 1.2209302325581395) internal successors, (105), 98 states have internal predecessors, (105), 5 states have call successors, (5), 4 states have call predecessors, (5), 5 states have return successors, (8), 5 states have call predecessors, (8), 5 states have call successors, (8) [2024-11-20 14:45:57,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 118 transitions. [2024-11-20 14:45:57,946 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 118 transitions. Word has length 55 [2024-11-20 14:45:57,946 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 14:45:57,946 INFO L471 AbstractCegarLoop]: Abstraction has 108 states and 118 transitions. [2024-11-20 14:45:57,946 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 3.5) internal successors, (35), 9 states have internal predecessors, (35), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-20 14:45:57,946 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 118 transitions. [2024-11-20 14:45:57,947 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2024-11-20 14:45:57,947 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 14:45:57,947 INFO L215 NwaCegarLoop]: trace histogram [16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 14:45:57,955 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (22)] Ended with exit code 0 [2024-11-20 14:45:58,147 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-20 14:45:58,148 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ldv_kobject_putErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [LDV_INIT_LIST_HEADErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, LDV_INIT_LIST_HEADErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, LDV_INIT_LIST_HEADErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2024-11-20 14:45:58,148 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 14:45:58,148 INFO L85 PathProgramCache]: Analyzing trace with hash 145356146, now seen corresponding path program 1 times [2024-11-20 14:45:58,148 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-11-20 14:45:58,149 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [454032737] [2024-11-20 14:45:58,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 14:45:58,149 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 [2024-11-20 14:45:58,149 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-11-20 14:45:58,152 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -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) [2024-11-20 14:45:58,153 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -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 [2024-11-20 14:45:58,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 14:45:58,387 INFO L255 TraceCheckSpWp]: Trace formula consists of 391 conjuncts, 31 conjuncts are in the unsatisfiable core [2024-11-20 14:45:58,389 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 14:45:58,402 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 [2024-11-20 14:45:58,729 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2024-11-20 14:45:58,729 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-20 14:45:58,729 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-11-20 14:45:58,729 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [454032737] [2024-11-20 14:45:58,729 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [454032737] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 14:45:58,729 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 14:45:58,729 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-11-20 14:45:58,729 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1049306977] [2024-11-20 14:45:58,729 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 14:45:58,730 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-20 14:45:58,730 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-11-20 14:45:58,731 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-20 14:45:58,731 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-11-20 14:45:58,731 INFO L87 Difference]: Start difference. First operand 108 states and 118 transitions. Second operand has 12 states, 11 states have (on average 3.1818181818181817) internal successors, (35), 10 states have internal predecessors, (35), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-20 14:45:59,022 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 14:45:59,022 INFO L93 Difference]: Finished difference Result 106 states and 114 transitions. [2024-11-20 14:45:59,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-20 14:45:59,023 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 3.1818181818181817) internal successors, (35), 10 states have internal predecessors, (35), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 55 [2024-11-20 14:45:59,023 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 14:45:59,024 INFO L225 Difference]: With dead ends: 106 [2024-11-20 14:45:59,024 INFO L226 Difference]: Without dead ends: 106 [2024-11-20 14:45:59,024 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 43 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=144, Unknown=0, NotChecked=0, Total=182 [2024-11-20 14:45:59,024 INFO L432 NwaCegarLoop]: 53 mSDtfsCounter, 72 mSDsluCounter, 372 mSDsCounter, 0 mSdLazyCounter, 238 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 74 SdHoareTripleChecker+Valid, 425 SdHoareTripleChecker+Invalid, 243 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 238 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-20 14:45:59,025 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [74 Valid, 425 Invalid, 243 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 238 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-20 14:45:59,025 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2024-11-20 14:45:59,027 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 106. [2024-11-20 14:45:59,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 106 states, 86 states have (on average 1.1744186046511629) internal successors, (101), 96 states have internal predecessors, (101), 5 states have call successors, (5), 4 states have call predecessors, (5), 5 states have return successors, (8), 5 states have call predecessors, (8), 5 states have call successors, (8) [2024-11-20 14:45:59,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 114 transitions. [2024-11-20 14:45:59,028 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 114 transitions. Word has length 55 [2024-11-20 14:45:59,028 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 14:45:59,028 INFO L471 AbstractCegarLoop]: Abstraction has 106 states and 114 transitions. [2024-11-20 14:45:59,029 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 3.1818181818181817) internal successors, (35), 10 states have internal predecessors, (35), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-20 14:45:59,029 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 114 transitions. [2024-11-20 14:45:59,029 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2024-11-20 14:45:59,029 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 14:45:59,029 INFO L215 NwaCegarLoop]: trace histogram [16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 14:45:59,037 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -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)] Forceful destruction successful, exit code 0 [2024-11-20 14:45:59,233 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-20 14:45:59,234 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ldv_kobject_putErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [LDV_INIT_LIST_HEADErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, LDV_INIT_LIST_HEADErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, LDV_INIT_LIST_HEADErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2024-11-20 14:45:59,234 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 14:45:59,234 INFO L85 PathProgramCache]: Analyzing trace with hash -1143259211, now seen corresponding path program 1 times [2024-11-20 14:45:59,234 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-11-20 14:45:59,234 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1748858311] [2024-11-20 14:45:59,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 14:45:59,235 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 [2024-11-20 14:45:59,235 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-11-20 14:45:59,236 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -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) [2024-11-20 14:45:59,237 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -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 [2024-11-20 14:45:59,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 14:45:59,583 INFO L255 TraceCheckSpWp]: Trace formula consists of 438 conjuncts, 23 conjuncts are in the unsatisfiable core [2024-11-20 14:45:59,586 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 14:45:59,589 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 [2024-11-20 14:45:59,753 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2024-11-20 14:45:59,753 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-20 14:45:59,753 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-11-20 14:45:59,753 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1748858311] [2024-11-20 14:45:59,753 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1748858311] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 14:45:59,753 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 14:45:59,753 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-11-20 14:45:59,753 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [688842033] [2024-11-20 14:45:59,753 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 14:45:59,754 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-20 14:45:59,754 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-11-20 14:45:59,754 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-20 14:45:59,754 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-11-20 14:45:59,754 INFO L87 Difference]: Start difference. First operand 106 states and 114 transitions. Second operand has 12 states, 11 states have (on average 3.727272727272727) internal successors, (41), 10 states have internal predecessors, (41), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-20 14:46:00,153 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 14:46:00,153 INFO L93 Difference]: Finished difference Result 117 states and 124 transitions. [2024-11-20 14:46:00,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-20 14:46:00,154 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 3.727272727272727) internal successors, (41), 10 states have internal predecessors, (41), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 61 [2024-11-20 14:46:00,154 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 14:46:00,155 INFO L225 Difference]: With dead ends: 117 [2024-11-20 14:46:00,155 INFO L226 Difference]: Without dead ends: 117 [2024-11-20 14:46:00,155 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 49 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=165, Unknown=0, NotChecked=0, Total=210 [2024-11-20 14:46:00,156 INFO L432 NwaCegarLoop]: 48 mSDtfsCounter, 48 mSDsluCounter, 312 mSDsCounter, 0 mSdLazyCounter, 359 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 360 SdHoareTripleChecker+Invalid, 368 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 359 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-20 14:46:00,156 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [48 Valid, 360 Invalid, 368 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 359 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-20 14:46:00,156 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2024-11-20 14:46:00,159 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 106. [2024-11-20 14:46:00,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 106 states, 87 states have (on average 1.1724137931034482) internal successors, (102), 96 states have internal predecessors, (102), 5 states have call successors, (5), 4 states have call predecessors, (5), 5 states have return successors, (8), 5 states have call predecessors, (8), 5 states have call successors, (8) [2024-11-20 14:46:00,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 115 transitions. [2024-11-20 14:46:00,160 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 115 transitions. Word has length 61 [2024-11-20 14:46:00,160 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 14:46:00,160 INFO L471 AbstractCegarLoop]: Abstraction has 106 states and 115 transitions. [2024-11-20 14:46:00,160 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 3.727272727272727) internal successors, (41), 10 states have internal predecessors, (41), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-20 14:46:00,161 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 115 transitions. [2024-11-20 14:46:00,161 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2024-11-20 14:46:00,161 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 14:46:00,161 INFO L215 NwaCegarLoop]: trace histogram [16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 14:46:00,170 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -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 [2024-11-20 14:46:00,362 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-20 14:46:00,362 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ldv_kobject_putErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [LDV_INIT_LIST_HEADErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, LDV_INIT_LIST_HEADErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, LDV_INIT_LIST_HEADErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2024-11-20 14:46:00,363 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 14:46:00,363 INFO L85 PathProgramCache]: Analyzing trace with hash -1143259210, now seen corresponding path program 1 times [2024-11-20 14:46:00,363 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-11-20 14:46:00,363 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [485077377] [2024-11-20 14:46:00,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 14:46:00,363 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 [2024-11-20 14:46:00,364 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-11-20 14:46:00,365 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -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) [2024-11-20 14:46:00,366 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -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 [2024-11-20 14:46:00,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 14:46:00,693 INFO L255 TraceCheckSpWp]: Trace formula consists of 438 conjuncts, 41 conjuncts are in the unsatisfiable core [2024-11-20 14:46:00,696 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 14:46:00,706 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 [2024-11-20 14:46:01,008 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2024-11-20 14:46:01,008 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-20 14:46:01,008 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-11-20 14:46:01,008 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [485077377] [2024-11-20 14:46:01,008 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [485077377] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 14:46:01,008 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 14:46:01,008 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-11-20 14:46:01,008 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1178303669] [2024-11-20 14:46:01,009 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 14:46:01,009 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-20 14:46:01,009 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-11-20 14:46:01,009 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-20 14:46:01,009 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-11-20 14:46:01,010 INFO L87 Difference]: Start difference. First operand 106 states and 115 transitions. Second operand has 13 states, 12 states have (on average 3.4166666666666665) internal successors, (41), 11 states have internal predecessors, (41), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-20 14:46:01,379 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 14:46:01,379 INFO L93 Difference]: Finished difference Result 104 states and 112 transitions. [2024-11-20 14:46:01,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-20 14:46:01,380 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 3.4166666666666665) internal successors, (41), 11 states have internal predecessors, (41), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 61 [2024-11-20 14:46:01,380 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 14:46:01,381 INFO L225 Difference]: With dead ends: 104 [2024-11-20 14:46:01,382 INFO L226 Difference]: Without dead ends: 104 [2024-11-20 14:46:01,382 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 48 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=46, Invalid=194, Unknown=0, NotChecked=0, Total=240 [2024-11-20 14:46:01,382 INFO L432 NwaCegarLoop]: 49 mSDtfsCounter, 39 mSDsluCounter, 394 mSDsCounter, 0 mSdLazyCounter, 289 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 443 SdHoareTripleChecker+Invalid, 293 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 289 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-20 14:46:01,383 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [41 Valid, 443 Invalid, 293 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 289 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-20 14:46:01,383 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2024-11-20 14:46:01,386 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 104. [2024-11-20 14:46:01,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 104 states, 87 states have (on average 1.1379310344827587) internal successors, (99), 94 states have internal predecessors, (99), 5 states have call successors, (5), 4 states have call predecessors, (5), 5 states have return successors, (8), 5 states have call predecessors, (8), 5 states have call successors, (8) [2024-11-20 14:46:01,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 112 transitions. [2024-11-20 14:46:01,388 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 112 transitions. Word has length 61 [2024-11-20 14:46:01,388 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 14:46:01,389 INFO L471 AbstractCegarLoop]: Abstraction has 104 states and 112 transitions. [2024-11-20 14:46:01,389 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 3.4166666666666665) internal successors, (41), 11 states have internal predecessors, (41), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-20 14:46:01,389 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 112 transitions. [2024-11-20 14:46:01,390 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2024-11-20 14:46:01,391 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 14:46:01,391 INFO L215 NwaCegarLoop]: trace histogram [16, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 14:46:01,400 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -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)] Ended with exit code 0 [2024-11-20 14:46:01,591 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-20 14:46:01,592 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [LDV_INIT_LIST_HEADErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, LDV_INIT_LIST_HEADErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, LDV_INIT_LIST_HEADErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2024-11-20 14:46:01,592 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 14:46:01,592 INFO L85 PathProgramCache]: Analyzing trace with hash 656354015, now seen corresponding path program 1 times [2024-11-20 14:46:01,592 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-11-20 14:46:01,593 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [601106706] [2024-11-20 14:46:01,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 14:46:01,593 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 [2024-11-20 14:46:01,593 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-11-20 14:46:01,594 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -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) [2024-11-20 14:46:01,595 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (26)] Waiting until timeout for monitored process [2024-11-20 14:46:01,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 14:46:01,827 INFO L255 TraceCheckSpWp]: Trace formula consists of 387 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-20 14:46:01,829 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 14:46:01,935 INFO L134 CoverageAnalysis]: Checked inductivity of 140 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2024-11-20 14:46:01,936 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-20 14:46:01,936 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-11-20 14:46:01,936 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [601106706] [2024-11-20 14:46:01,936 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [601106706] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 14:46:01,936 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 14:46:01,936 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-20 14:46:01,936 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1272015497] [2024-11-20 14:46:01,936 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 14:46:01,937 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-20 14:46:01,937 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-11-20 14:46:01,937 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-20 14:46:01,937 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2024-11-20 14:46:01,937 INFO L87 Difference]: Start difference. First operand 104 states and 112 transitions. Second operand has 9 states, 9 states have (on average 4.444444444444445) internal successors, (40), 8 states have internal predecessors, (40), 4 states have call successors, (4), 2 states have call predecessors, (4), 4 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) [2024-11-20 14:46:01,998 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 14:46:01,998 INFO L93 Difference]: Finished difference Result 108 states and 114 transitions. [2024-11-20 14:46:01,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-20 14:46:01,999 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.444444444444445) internal successors, (40), 8 states have internal predecessors, (40), 4 states have call successors, (4), 2 states have call predecessors, (4), 4 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) Word has length 63 [2024-11-20 14:46:01,999 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 14:46:02,000 INFO L225 Difference]: With dead ends: 108 [2024-11-20 14:46:02,000 INFO L226 Difference]: Without dead ends: 104 [2024-11-20 14:46:02,000 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2024-11-20 14:46:02,004 INFO L432 NwaCegarLoop]: 67 mSDtfsCounter, 0 mSDsluCounter, 434 mSDsCounter, 0 mSdLazyCounter, 60 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 501 SdHoareTripleChecker+Invalid, 61 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 60 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-20 14:46:02,004 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 501 Invalid, 61 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 60 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-20 14:46:02,005 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2024-11-20 14:46:02,007 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 104. [2024-11-20 14:46:02,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 104 states, 87 states have (on average 1.1149425287356323) internal successors, (97), 94 states have internal predecessors, (97), 5 states have call successors, (5), 4 states have call predecessors, (5), 5 states have return successors, (8), 5 states have call predecessors, (8), 5 states have call successors, (8) [2024-11-20 14:46:02,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 110 transitions. [2024-11-20 14:46:02,009 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 110 transitions. Word has length 63 [2024-11-20 14:46:02,010 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 14:46:02,010 INFO L471 AbstractCegarLoop]: Abstraction has 104 states and 110 transitions. [2024-11-20 14:46:02,010 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.444444444444445) internal successors, (40), 8 states have internal predecessors, (40), 4 states have call successors, (4), 2 states have call predecessors, (4), 4 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) [2024-11-20 14:46:02,010 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 110 transitions. [2024-11-20 14:46:02,011 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2024-11-20 14:46:02,011 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 14:46:02,011 INFO L215 NwaCegarLoop]: trace histogram [16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 14:46:02,021 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (26)] Forceful destruction successful, exit code 0 [2024-11-20 14:46:02,211 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-20 14:46:02,212 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ldv_kobject_putErr7ASSERT_VIOLATIONMEMORY_FREE === [LDV_INIT_LIST_HEADErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, LDV_INIT_LIST_HEADErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, LDV_INIT_LIST_HEADErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2024-11-20 14:46:02,212 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 14:46:02,212 INFO L85 PathProgramCache]: Analyzing trace with hash 255500457, now seen corresponding path program 1 times [2024-11-20 14:46:02,212 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-11-20 14:46:02,212 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1486643080] [2024-11-20 14:46:02,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 14:46:02,213 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 [2024-11-20 14:46:02,213 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-11-20 14:46:02,214 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -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) [2024-11-20 14:46:02,215 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (27)] Waiting until timeout for monitored process [2024-11-20 14:46:02,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 14:46:02,596 INFO L255 TraceCheckSpWp]: Trace formula consists of 447 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-11-20 14:46:02,599 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 14:46:02,962 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2024-11-20 14:46:02,962 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-20 14:46:02,962 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-11-20 14:46:02,962 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1486643080] [2024-11-20 14:46:02,962 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1486643080] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 14:46:02,963 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 14:46:02,963 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-11-20 14:46:02,963 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [471073734] [2024-11-20 14:46:02,963 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 14:46:02,963 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-20 14:46:02,963 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-11-20 14:46:02,963 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-20 14:46:02,964 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2024-11-20 14:46:02,964 INFO L87 Difference]: Start difference. First operand 104 states and 110 transitions. Second operand has 13 states, 12 states have (on average 3.6666666666666665) internal successors, (44), 10 states have internal predecessors, (44), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-20 14:46:03,175 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 14:46:03,175 INFO L93 Difference]: Finished difference Result 103 states and 109 transitions. [2024-11-20 14:46:03,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-20 14:46:03,176 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 3.6666666666666665) internal successors, (44), 10 states have internal predecessors, (44), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 64 [2024-11-20 14:46:03,176 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 14:46:03,176 INFO L225 Difference]: With dead ends: 103 [2024-11-20 14:46:03,176 INFO L226 Difference]: Without dead ends: 103 [2024-11-20 14:46:03,177 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 51 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=60, Invalid=180, Unknown=0, NotChecked=0, Total=240 [2024-11-20 14:46:03,177 INFO L432 NwaCegarLoop]: 54 mSDtfsCounter, 56 mSDsluCounter, 365 mSDsCounter, 0 mSdLazyCounter, 198 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 419 SdHoareTripleChecker+Invalid, 202 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 198 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-20 14:46:03,177 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [58 Valid, 419 Invalid, 202 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 198 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-20 14:46:03,178 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2024-11-20 14:46:03,180 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 103. [2024-11-20 14:46:03,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 103 states, 87 states have (on average 1.103448275862069) internal successors, (96), 93 states have internal predecessors, (96), 5 states have call successors, (5), 4 states have call predecessors, (5), 5 states have return successors, (8), 5 states have call predecessors, (8), 5 states have call successors, (8) [2024-11-20 14:46:03,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 109 transitions. [2024-11-20 14:46:03,181 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 109 transitions. Word has length 64 [2024-11-20 14:46:03,181 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 14:46:03,181 INFO L471 AbstractCegarLoop]: Abstraction has 103 states and 109 transitions. [2024-11-20 14:46:03,181 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 3.6666666666666665) internal successors, (44), 10 states have internal predecessors, (44), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-20 14:46:03,182 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 109 transitions. [2024-11-20 14:46:03,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2024-11-20 14:46:03,182 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 14:46:03,182 INFO L215 NwaCegarLoop]: trace histogram [16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 14:46:03,191 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (27)] Forceful destruction successful, exit code 0 [2024-11-20 14:46:03,383 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-20 14:46:03,383 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting ldv_kobject_putErr9ASSERT_VIOLATIONMEMORY_FREE === [LDV_INIT_LIST_HEADErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, LDV_INIT_LIST_HEADErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, LDV_INIT_LIST_HEADErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2024-11-20 14:46:03,383 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 14:46:03,384 INFO L85 PathProgramCache]: Analyzing trace with hash 932129625, now seen corresponding path program 1 times [2024-11-20 14:46:03,384 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-11-20 14:46:03,384 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1070952857] [2024-11-20 14:46:03,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 14:46:03,384 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 [2024-11-20 14:46:03,384 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-11-20 14:46:03,385 INFO L229 MonitoredProcess]: Starting monitored process 28 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -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) [2024-11-20 14:46:03,386 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (28)] Waiting until timeout for monitored process [2024-11-20 14:46:03,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 14:46:03,823 INFO L255 TraceCheckSpWp]: Trace formula consists of 452 conjuncts, 77 conjuncts are in the unsatisfiable core [2024-11-20 14:46:03,828 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 14:46:03,947 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-20 14:46:03,948 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-20 14:46:03,949 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-20 14:46:03,950 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 7 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 25 [2024-11-20 14:46:04,120 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-20 14:46:04,121 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 10 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 47 treesize of output 34 [2024-11-20 14:46:04,414 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-20 14:46:04,414 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 82 treesize of output 29 [2024-11-20 14:46:04,593 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-20 14:46:04,594 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 45 treesize of output 25 [2024-11-20 14:46:04,784 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2024-11-20 14:46:04,784 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-20 14:46:04,784 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-11-20 14:46:04,785 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1070952857] [2024-11-20 14:46:04,785 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1070952857] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 14:46:04,785 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 14:46:04,785 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [27] imperfect sequences [] total 27 [2024-11-20 14:46:04,785 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [16303406] [2024-11-20 14:46:04,785 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 14:46:04,786 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2024-11-20 14:46:04,786 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-11-20 14:46:04,786 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2024-11-20 14:46:04,786 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=637, Unknown=0, NotChecked=0, Total=702 [2024-11-20 14:46:04,787 INFO L87 Difference]: Start difference. First operand 103 states and 109 transitions. Second operand has 27 states, 27 states have (on average 1.7407407407407407) internal successors, (47), 24 states have internal predecessors, (47), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-20 14:46:06,270 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 14:46:06,271 INFO L93 Difference]: Finished difference Result 95 states and 98 transitions. [2024-11-20 14:46:06,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2024-11-20 14:46:06,271 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 1.7407407407407407) internal successors, (47), 24 states have internal predecessors, (47), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 67 [2024-11-20 14:46:06,272 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 14:46:06,272 INFO L225 Difference]: With dead ends: 95 [2024-11-20 14:46:06,272 INFO L226 Difference]: Without dead ends: 95 [2024-11-20 14:46:06,273 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 235 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=119, Invalid=1141, Unknown=0, NotChecked=0, Total=1260 [2024-11-20 14:46:06,273 INFO L432 NwaCegarLoop]: 44 mSDtfsCounter, 19 mSDsluCounter, 968 mSDsCounter, 0 mSdLazyCounter, 732 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 1012 SdHoareTripleChecker+Invalid, 736 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 732 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2024-11-20 14:46:06,274 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 1012 Invalid, 736 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 732 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2024-11-20 14:46:06,274 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2024-11-20 14:46:06,276 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 95. [2024-11-20 14:46:06,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 95 states, 83 states have (on average 1.072289156626506) internal successors, (89), 86 states have internal predecessors, (89), 4 states have call successors, (4), 4 states have call predecessors, (4), 4 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) [2024-11-20 14:46:06,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 98 transitions. [2024-11-20 14:46:06,277 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 98 transitions. Word has length 67 [2024-11-20 14:46:06,277 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 14:46:06,277 INFO L471 AbstractCegarLoop]: Abstraction has 95 states and 98 transitions. [2024-11-20 14:46:06,277 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 1.7407407407407407) internal successors, (47), 24 states have internal predecessors, (47), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-20 14:46:06,277 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 98 transitions. [2024-11-20 14:46:06,278 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2024-11-20 14:46:06,278 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 14:46:06,278 INFO L215 NwaCegarLoop]: trace histogram [16, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 14:46:06,290 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (28)] Forceful destruction successful, exit code 0 [2024-11-20 14:46:06,479 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-20 14:46:06,479 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [LDV_INIT_LIST_HEADErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, LDV_INIT_LIST_HEADErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, LDV_INIT_LIST_HEADErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2024-11-20 14:46:06,480 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 14:46:06,480 INFO L85 PathProgramCache]: Analyzing trace with hash 1997003999, now seen corresponding path program 1 times [2024-11-20 14:46:06,480 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-11-20 14:46:06,480 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2065169367] [2024-11-20 14:46:06,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 14:46:06,480 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 [2024-11-20 14:46:06,481 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-11-20 14:46:06,481 INFO L229 MonitoredProcess]: Starting monitored process 29 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -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) [2024-11-20 14:46:06,482 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (29)] Waiting until timeout for monitored process [2024-11-20 14:46:06,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 14:46:06,924 INFO L255 TraceCheckSpWp]: Trace formula consists of 501 conjuncts, 110 conjuncts are in the unsatisfiable core [2024-11-20 14:46:06,930 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 14:46:07,047 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-20 14:46:07,048 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-20 14:46:07,049 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-20 14:46:07,049 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-20 14:46:07,050 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-20 14:46:07,051 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 7 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 33 [2024-11-20 14:46:07,236 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-20 14:46:07,237 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 15 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 55 treesize of output 45 [2024-11-20 14:46:07,646 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-20 14:46:07,647 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 153 treesize of output 81 [2024-11-20 14:46:08,106 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-20 14:46:08,109 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 201 treesize of output 129 [2024-11-20 14:46:16,537 INFO L134 CoverageAnalysis]: Checked inductivity of 148 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 139 trivial. 0 not checked. [2024-11-20 14:46:16,537 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-20 14:46:53,806 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_DerPreprocessor_3 (Array (_ BitVec 32) (_ BitVec 8)))) (or (= (_ bv1 32) (let ((.cse0 (bvadd (let ((.cse1 (bvadd (let ((.cse2 (select (store |c_#memory_int#1| |c_ULTIMATE.start_ldv_kobject_init_internal_~kobj#1.base| v_DerPreprocessor_3) |c_ULTIMATE.start_ldv_kobject_create_~kobj~1#1.base|))) (concat (concat (concat (select .cse2 (bvadd (_ bv15 32) |c_ULTIMATE.start_ldv_kobject_create_~kobj~1#1.offset|)) (select .cse2 (bvadd (_ bv14 32) |c_ULTIMATE.start_ldv_kobject_create_~kobj~1#1.offset|))) (select .cse2 (bvadd (_ bv13 32) |c_ULTIMATE.start_ldv_kobject_create_~kobj~1#1.offset|))) (select .cse2 (bvadd (_ bv12 32) |c_ULTIMATE.start_ldv_kobject_create_~kobj~1#1.offset|)))) (_ bv1 32)))) (concat (concat (concat ((_ extract 31 24) .cse1) ((_ extract 23 16) .cse1)) ((_ extract 15 8) .cse1)) ((_ extract 7 0) .cse1))) (_ bv4294967295 32)))) (concat (concat (concat ((_ extract 31 24) .cse0) ((_ extract 23 16) .cse0)) ((_ extract 15 8) .cse0)) ((_ extract 7 0) .cse0)))) (not (= (let ((.cse4 (bvadd (_ bv8 32) |c_ULTIMATE.start_ldv_kobject_init_internal_~kobj#1.offset|))) (store (let ((.cse3 (bvadd (_ bv4 32) |c_ULTIMATE.start_ldv_kobject_init_internal_~kobj#1.offset|))) (store (select |c_#memory_int#1| |c_ULTIMATE.start_ldv_kobject_init_internal_~kobj#1.base|) .cse3 (select v_DerPreprocessor_3 .cse3))) .cse4 (select v_DerPreprocessor_3 .cse4))) v_DerPreprocessor_3)))) is different from false [2024-11-20 14:46:53,809 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-11-20 14:46:53,809 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2065169367] [2024-11-20 14:46:53,809 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2065169367] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 14:46:53,810 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1929314834] [2024-11-20 14:46:53,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 14:46:53,810 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-20 14:46:53,810 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2024-11-20 14:46:53,811 INFO L229 MonitoredProcess]: Starting monitored process 30 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-20 14:46:53,812 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (30)] Waiting until timeout for monitored process [2024-11-20 14:46:55,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 14:46:55,166 INFO L255 TraceCheckSpWp]: Trace formula consists of 501 conjuncts, 127 conjuncts are in the unsatisfiable core [2024-11-20 14:46:55,175 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 14:46:56,507 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-20 14:46:56,508 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-20 14:46:56,509 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-20 14:46:56,510 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-20 14:46:56,510 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-20 14:46:56,511 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 7 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 33 [2024-11-20 14:46:56,572 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-20 14:46:56,572 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 15 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 55 treesize of output 45 [2024-11-20 14:46:56,736 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-20 14:46:56,737 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 153 treesize of output 81 [2024-11-20 14:46:56,945 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-20 14:46:56,945 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 201 treesize of output 129 [2024-11-20 14:46:57,028 INFO L134 CoverageAnalysis]: Checked inductivity of 148 backedges. 0 proven. 135 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2024-11-20 14:46:57,028 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-20 14:46:57,744 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_DerPreprocessor_6 (Array (_ BitVec 32) (_ BitVec 8)))) (or (not (= v_DerPreprocessor_6 (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_ldv_kobject_init_internal_~kobj#1.offset|))) (store (let ((.cse0 (bvadd (_ bv4 32) |c_ULTIMATE.start_ldv_kobject_init_internal_~kobj#1.offset|))) (store (select |c_#memory_int#1| |c_ULTIMATE.start_ldv_kobject_init_internal_~kobj#1.base|) .cse0 (select v_DerPreprocessor_6 .cse0))) .cse1 (select v_DerPreprocessor_6 .cse1))))) (= (_ bv1 32) (let ((.cse2 (bvadd (_ bv4294967295 32) (let ((.cse3 (bvadd (_ bv1 32) (let ((.cse4 (select (store |c_#memory_int#1| |c_ULTIMATE.start_ldv_kobject_init_internal_~kobj#1.base| v_DerPreprocessor_6) |c_ULTIMATE.start_ldv_kobject_create_~kobj~1#1.base|))) (concat (concat (concat (select .cse4 (bvadd (_ bv15 32) |c_ULTIMATE.start_ldv_kobject_create_~kobj~1#1.offset|)) (select .cse4 (bvadd (_ bv14 32) |c_ULTIMATE.start_ldv_kobject_create_~kobj~1#1.offset|))) (select .cse4 (bvadd (_ bv13 32) |c_ULTIMATE.start_ldv_kobject_create_~kobj~1#1.offset|))) (select .cse4 (bvadd (_ bv12 32) |c_ULTIMATE.start_ldv_kobject_create_~kobj~1#1.offset|))))))) (concat (concat (concat ((_ extract 31 24) .cse3) ((_ extract 23 16) .cse3)) ((_ extract 15 8) .cse3)) ((_ extract 7 0) .cse3)))))) (concat (concat (concat ((_ extract 31 24) .cse2) ((_ extract 23 16) .cse2)) ((_ extract 15 8) .cse2)) ((_ extract 7 0) .cse2)))))) is different from false [2024-11-20 14:46:57,747 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1929314834] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 14:46:57,747 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-20 14:46:57,747 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 43] total 43 [2024-11-20 14:46:57,747 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1609992808] [2024-11-20 14:46:57,747 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-20 14:46:57,748 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2024-11-20 14:46:57,748 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-11-20 14:46:57,748 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2024-11-20 14:46:57,749 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=208, Invalid=3820, Unknown=12, NotChecked=250, Total=4290 [2024-11-20 14:46:57,749 INFO L87 Difference]: Start difference. First operand 95 states and 98 transitions. Second operand has 43 states, 42 states have (on average 1.5952380952380953) internal successors, (67), 40 states have internal predecessors, (67), 4 states have call successors, (4), 2 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4)