./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/valid-memsafety.prp --file ../../../trunk/examples/svcomp/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version c4f91361 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 ../../../trunk/examples/svcomp/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-64bit-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 64bit --witnessprinter.graph.data.programhash cc21d3f2365aa3e9759266a2897b17abd63f704e2f2c46d2220f73d4b814d4db --- Real Ultimate output --- This is Ultimate 0.2.3-dev-c4f9136-m [2023-11-23 15:41:36,530 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-23 15:41:36,592 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-64bit-Automizer_Default.epf [2023-11-23 15:41:36,596 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-23 15:41:36,596 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-23 15:41:36,623 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-23 15:41:36,624 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-23 15:41:36,624 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-23 15:41:36,625 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-23 15:41:36,628 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-23 15:41:36,628 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-23 15:41:36,629 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-23 15:41:36,629 INFO L153 SettingsManager]: * Use SBE=true [2023-11-23 15:41:36,630 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-23 15:41:36,630 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-23 15:41:36,631 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-23 15:41:36,631 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-23 15:41:36,631 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-23 15:41:36,631 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-23 15:41:36,631 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-23 15:41:36,631 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-23 15:41:36,632 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-23 15:41:36,632 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-23 15:41:36,632 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-23 15:41:36,633 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-23 15:41:36,634 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-23 15:41:36,634 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-23 15:41:36,634 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 15:41:36,634 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-23 15:41:36,634 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-23 15:41:36,635 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-23 15:41:36,635 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-23 15:41:36,635 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-23 15:41:36,636 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-23 15:41:36,636 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-23 15:41:36,636 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-23 15:41:36,636 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> cc21d3f2365aa3e9759266a2897b17abd63f704e2f2c46d2220f73d4b814d4db [2023-11-23 15:41:36,818 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-23 15:41:36,838 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-23 15:41:36,852 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-23 15:41:36,853 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-23 15:41:36,853 INFO L274 PluginConnector]: CDTParser initialized [2023-11-23 15:41:36,854 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i [2023-11-23 15:41:37,877 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-23 15:41:38,276 INFO L384 CDTParser]: Found 1 translation units. [2023-11-23 15:41:38,277 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i [2023-11-23 15:41:38,311 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c6c520d52/37d0c81c9f6f42238cf06cbde976872a/FLAG2b2b9c5e1 [2023-11-23 15:41:38,327 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c6c520d52/37d0c81c9f6f42238cf06cbde976872a [2023-11-23 15:41:38,329 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-23 15:41:38,331 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-23 15:41:38,333 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-23 15:41:38,333 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-23 15:41:38,337 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-23 15:41:38,337 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 03:41:38" (1/1) ... [2023-11-23 15:41:38,338 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6af70e8f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:41:38, skipping insertion in model container [2023-11-23 15:41:38,338 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 03:41:38" (1/1) ... [2023-11-23 15:41:38,473 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-23 15:41:39,497 WARN L580 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2023-11-23 15:41:39,508 WARN L580 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2023-11-23 15:41:39,566 WARN L580 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2023-11-23 15:41:39,572 WARN L580 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2023-11-23 15:41:40,370 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 15:41:40,402 ERROR L324 MainTranslator]: Unsupported Syntax: Found a cast between two array/pointer types of different sizes while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) [2023-11-23 15:41:40,403 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@1a1112b5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:41:40, skipping insertion in model container [2023-11-23 15:41:40,403 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-23 15:41:40,404 INFO L186 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2023-11-23 15:41:40,405 INFO L158 Benchmark]: Toolchain (without parser) took 2073.69ms. Allocated memory is still 178.3MB. Free memory was 100.6MB in the beginning and 106.4MB in the end (delta: -5.8MB). Peak memory consumption was 56.5MB. Max. memory is 16.1GB. [2023-11-23 15:41:40,406 INFO L158 Benchmark]: CDTParser took 0.16ms. Allocated memory is still 94.4MB. Free memory was 63.4MB in the beginning and 63.3MB in the end (delta: 25.8kB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-23 15:41:40,406 INFO L158 Benchmark]: CACSL2BoogieTranslator took 2070.90ms. Allocated memory is still 178.3MB. Free memory was 100.2MB in the beginning and 106.4MB in the end (delta: -6.2MB). Peak memory consumption was 56.5MB. Max. memory is 16.1GB. [2023-11-23 15:41:40,408 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16ms. Allocated memory is still 94.4MB. Free memory was 63.4MB in the beginning and 63.3MB in the end (delta: 25.8kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 2070.90ms. Allocated memory is still 178.3MB. Free memory was 100.2MB in the beginning and 106.4MB in the end (delta: -6.2MB). Peak memory consumption was 56.5MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 5175]: 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 ../../../trunk/examples/svcomp/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-64bit-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 64bit --witnessprinter.graph.data.programhash cc21d3f2365aa3e9759266a2897b17abd63f704e2f2c46d2220f73d4b814d4db --- Real Ultimate output --- This is Ultimate 0.2.3-dev-c4f9136-m [2023-11-23 15:41:42,232 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-23 15:41:42,311 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-64bit-Automizer_Bitvector.epf [2023-11-23 15:41:42,315 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-23 15:41:42,316 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-23 15:41:42,342 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-23 15:41:42,343 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-23 15:41:42,343 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-23 15:41:42,344 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-23 15:41:42,346 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-23 15:41:42,347 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-23 15:41:42,347 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-23 15:41:42,348 INFO L153 SettingsManager]: * Use SBE=true [2023-11-23 15:41:42,349 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-23 15:41:42,349 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-23 15:41:42,349 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-23 15:41:42,349 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-23 15:41:42,349 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-23 15:41:42,350 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-23 15:41:42,350 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-23 15:41:42,350 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-23 15:41:42,350 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-11-23 15:41:42,351 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-11-23 15:41:42,351 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-23 15:41:42,351 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-23 15:41:42,352 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-23 15:41:42,352 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-23 15:41:42,352 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-23 15:41:42,352 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-23 15:41:42,353 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 15:41:42,353 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-23 15:41:42,354 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-23 15:41:42,354 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-11-23 15:41:42,354 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-11-23 15:41:42,354 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-23 15:41:42,355 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-23 15:41:42,355 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-23 15:41:42,355 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-23 15:41:42,355 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-11-23 15:41:42,356 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> cc21d3f2365aa3e9759266a2897b17abd63f704e2f2c46d2220f73d4b814d4db [2023-11-23 15:41:42,627 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-23 15:41:42,640 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-23 15:41:42,642 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-23 15:41:42,643 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-23 15:41:42,643 INFO L274 PluginConnector]: CDTParser initialized [2023-11-23 15:41:42,644 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i [2023-11-23 15:41:43,713 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-23 15:41:44,109 INFO L384 CDTParser]: Found 1 translation units. [2023-11-23 15:41:44,110 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ldv-linux-4.0-rc1-mav/linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i [2023-11-23 15:41:44,153 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ea7ac4e46/aa62fb159ce642caa2694f260654409a/FLAGa31714455 [2023-11-23 15:41:44,166 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ea7ac4e46/aa62fb159ce642caa2694f260654409a [2023-11-23 15:41:44,168 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-23 15:41:44,169 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-23 15:41:44,171 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-23 15:41:44,171 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-23 15:41:44,175 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-23 15:41:44,176 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 03:41:44" (1/1) ... [2023-11-23 15:41:44,176 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@29860896 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:41:44, skipping insertion in model container [2023-11-23 15:41:44,177 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 03:41:44" (1/1) ... [2023-11-23 15:41:44,277 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-23 15:41:46,298 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 15:41:46,346 INFO L199 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2023-11-23 15:41:46,395 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-23 15:41:46,639 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 15:41:46,659 INFO L202 MainTranslator]: Completed pre-run [2023-11-23 15:41:46,746 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("1:\tud2\n.pushsection __bug_table,\"a\"\n2:\t.long 1b - 2b, %c0 - 2b\n\t.word %c1, 0\n\t.org 2b+%c2\n.popsection": : "i" ((char *)"include/linux/virtio_config.h"), "i" (99), "i" (12UL)); [4816-4817] [2023-11-23 15:41:46,750 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("1:\tud2\n.pushsection __bug_table,\"a\"\n2:\t.long 1b - 2b, %c0 - 2b\n\t.word %c1, 0\n\t.org 2b+%c2\n.popsection": : "i" ((char *)"include/linux/virtio_config.h"), "i" (178), "i" (12UL)); [4854-4855] [2023-11-23 15:41:46,771 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("1:\tud2\n.pushsection __bug_table,\"a\"\n2:\t.long 1b - 2b, %c0 - 2b\n\t.word %c1, 0\n\t.org 2b+%c2\n.popsection": : "i" ((char *)"drivers/block/virtio_blk.c"), "i" (172), "i" (12UL)); [5304-5305] [2023-11-23 15:41:46,773 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("1:\tud2\n.pushsection __bug_table,\"a\"\n2:\t.long 1b - 2b, %c0 - 2b\n\t.word %c1, 0\n\t.org 2b+%c2\n.popsection": : "i" ((char *)"drivers/block/virtio_blk.c"), "i" (198), "i" (12UL)); [5360-5361] [2023-11-23 15:41:46,809 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("1:\tud2\n.pushsection __bug_table,\"a\"\n2:\t.long 1b - 2b, %c0 - 2b\n\t.word %c1, 0\n\t.org 2b+%c2\n.popsection": : "i" ((char *)"drivers/block/virtio_blk.c"), "i" (285), "i" (12UL)); [5562-5563] [2023-11-23 15:41:46,809 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("1:\tud2\n.pushsection __bug_table,\"a\"\n2:\t.long 1b - 2b, %c0 - 2b\n\t.word %c1, 0\n\t.org 2b+%c2\n.popsection": : "i" ((char *)"drivers/block/virtio_blk.c"), "i" (287), "i" (12UL)); [5612-5613] [2023-11-23 15:41:46,810 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("1:\tud2\n.pushsection __bug_table,\"a\"\n2:\t.long 1b - 2b, %c0 - 2b\n\t.word %c1, 0\n\t.org 2b+%c2\n.popsection": : "i" ((char *)"drivers/block/virtio_blk.c"), "i" (289), "i" (12UL)); [5662-5663] [2023-11-23 15:41:46,817 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("1:\tud2\n.pushsection __bug_table,\"a\"\n2:\t.long 1b - 2b, %c0 - 2b\n\t.word %c1, 0\n\t.org 2b+%c2\n.popsection": : "i" ((char *)"drivers/block/virtio_blk.c"), "i" (348), "i" (12UL)); [5800-5801] [2023-11-23 15:41:46,820 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("1:\tud2\n.pushsection __bug_table,\"a\"\n2:\t.long 1b - 2b, %c0 - 2b\n\t.word %c1, 0\n\t.org 2b+%c2\n.popsection": : "i" ((char *)"drivers/block/virtio_blk.c"), "i" (391), "i" (12UL)); [5911-5912] [2023-11-23 15:41:46,824 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("1:\tud2\n.pushsection __bug_table,\"a\"\n2:\t.long 1b - 2b, %c0 - 2b\n\t.word %c1, 0\n\t.org 2b+%c2\n.popsection": : "i" ((char *)"drivers/block/virtio_blk.c"), "i" (478), "i" (12UL)); [6126-6127] [2023-11-23 15:41:46,828 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("1:\tud2\n.pushsection __bug_table,\"a\"\n2:\t.long 1b - 2b, %c0 - 2b\n\t.word %c1, 0\n\t.org 2b+%c2\n.popsection": : "i" ((char *)"drivers/block/virtio_blk.c"), "i" (512), "i" (12UL)); [6214-6215] [2023-11-23 15:41:46,829 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("1:\tud2\n.pushsection __bug_table,\"a\"\n2:\t.long 1b - 2b, %c0 - 2b\n\t.word %c1, 0\n\t.org 2b+%c2\n.popsection": : "i" ((char *)"drivers/block/virtio_blk.c"), "i" (533), "i" (12UL)); [6269-6270] [2023-11-23 15:41:46,832 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("1:\tud2\n.pushsection __bug_table,\"a\"\n2:\t.long 1b - 2b, %c0 - 2b\n\t.word %c1, 0\n\t.org 2b+%c2\n.popsection": : "i" ((char *)"drivers/block/virtio_blk.c"), "i" (591), "i" (12UL)); [6454-6455] [2023-11-23 15:41:46,838 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("1:\tud2\n.pushsection __bug_table,\"a\"\n2:\t.long 1b - 2b, %c0 - 2b\n\t.word %c1, 0\n\t.org 2b+%c2\n.popsection": : "i" ((char *)"drivers/block/virtio_blk.c"), "i" (669), "i" (12UL)); [6605-6606] [2023-11-23 15:41:46,838 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("1:\tud2\n.pushsection __bug_table,\"a\"\n2:\t.long 1b - 2b, %c0 - 2b\n\t.word %c1, 0\n\t.org 2b+%c2\n.popsection": : "i" ((char *)"drivers/block/virtio_blk.c"), "i" (691), "i" (12UL)); [6671-6672] [2023-11-23 15:41:46,839 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("1:\tud2\n.pushsection __bug_table,\"a\"\n2:\t.long 1b - 2b, %c0 - 2b\n\t.word %c1, 0\n\t.org 2b+%c2\n.popsection": : "i" ((char *)"drivers/block/virtio_blk.c"), "i" (700), "i" (12UL)); [6744-6745] [2023-11-23 15:41:46,840 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("1:\tud2\n.pushsection __bug_table,\"a\"\n2:\t.long 1b - 2b, %c0 - 2b\n\t.word %c1, 0\n\t.org 2b+%c2\n.popsection": : "i" ((char *)"drivers/block/virtio_blk.c"), "i" (709), "i" (12UL)); [6818-6819] [2023-11-23 15:41:46,840 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("1:\tud2\n.pushsection __bug_table,\"a\"\n2:\t.long 1b - 2b, %c0 - 2b\n\t.word %c1, 0\n\t.org 2b+%c2\n.popsection": : "i" ((char *)"drivers/block/virtio_blk.c"), "i" (716), "i" (12UL)); [6888-6889] [2023-11-23 15:41:46,841 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("1:\tud2\n.pushsection __bug_table,\"a\"\n2:\t.long 1b - 2b, %c0 - 2b\n\t.word %c1, 0\n\t.org 2b+%c2\n.popsection": : "i" ((char *)"drivers/block/virtio_blk.c"), "i" (722), "i" (12UL)); [6958-6959] [2023-11-23 15:41:46,841 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("1:\tud2\n.pushsection __bug_table,\"a\"\n2:\t.long 1b - 2b, %c0 - 2b\n\t.word %c1, 0\n\t.org 2b+%c2\n.popsection": : "i" ((char *)"drivers/block/virtio_blk.c"), "i" (728), "i" (12UL)); [7028-7029] [2023-11-23 15:41:46,976 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 15:41:47,203 INFO L206 MainTranslator]: Completed translation [2023-11-23 15:41:47,203 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:41:47 WrapperNode [2023-11-23 15:41:47,204 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-23 15:41:47,204 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-23 15:41:47,205 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-23 15:41:47,205 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-23 15:41:47,211 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:41:47" (1/1) ... [2023-11-23 15:41:47,293 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:41:47" (1/1) ... [2023-11-23 15:41:47,416 INFO L138 Inliner]: procedures = 569, calls = 1545, calls flagged for inlining = 250, calls inlined = 160, statements flattened = 3178 [2023-11-23 15:41:47,417 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-23 15:41:47,418 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-23 15:41:47,418 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-23 15:41:47,418 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-23 15:41:47,425 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:41:47" (1/1) ... [2023-11-23 15:41:47,426 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:41:47" (1/1) ... [2023-11-23 15:41:47,437 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:41:47" (1/1) ... [2023-11-23 15:41:47,438 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:41:47" (1/1) ... [2023-11-23 15:41:47,503 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:41:47" (1/1) ... [2023-11-23 15:41:47,512 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:41:47" (1/1) ... [2023-11-23 15:41:47,523 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:41:47" (1/1) ... [2023-11-23 15:41:47,533 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:41:47" (1/1) ... [2023-11-23 15:41:47,551 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-23 15:41:47,552 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-23 15:41:47,552 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-23 15:41:47,552 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-23 15:41:47,552 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:41:47" (1/1) ... [2023-11-23 15:41:47,556 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 15:41:47,567 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 15:41:47,580 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-23 15:41:47,598 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-23 15:41:47,616 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_irqrestore_97 [2023-11-23 15:41:47,617 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_irqrestore_97 [2023-11-23 15:41:47,617 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_linux_usb_coherent_check_final_state [2023-11-23 15:41:47,617 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_linux_usb_coherent_check_final_state [2023-11-23 15:41:47,617 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2023-11-23 15:41:47,617 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2023-11-23 15:41:47,617 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_linux_mmc_sdio_func_check_final_state [2023-11-23 15:41:47,617 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_linux_mmc_sdio_func_check_final_state [2023-11-23 15:41:47,618 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_linux_block_genhd_del_gendisk [2023-11-23 15:41:47,618 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_linux_block_genhd_del_gendisk [2023-11-23 15:41:47,618 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock [2023-11-23 15:41:47,618 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock [2023-11-23 15:41:47,618 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_linux_arch_io_check_final_state [2023-11-23 15:41:47,618 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_linux_arch_io_check_final_state [2023-11-23 15:41:47,618 INFO L130 BoogieDeclarations]: Found specification of procedure init_vq [2023-11-23 15:41:47,618 INFO L138 BoogieDeclarations]: Found implementation of procedure init_vq [2023-11-23 15:41:47,619 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_linux_kernel_module_check_final_state [2023-11-23 15:41:47,619 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_linux_kernel_module_check_final_state [2023-11-23 15:41:47,619 INFO L130 BoogieDeclarations]: Found specification of procedure virtblk_config_changed [2023-11-23 15:41:47,619 INFO L138 BoogieDeclarations]: Found implementation of procedure virtblk_config_changed [2023-11-23 15:41:47,619 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_xmalloc [2023-11-23 15:41:47,619 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_xmalloc [2023-11-23 15:41:47,619 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2023-11-23 15:41:47,619 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2023-11-23 15:41:47,619 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_linux_block_queue_check_final_state [2023-11-23 15:41:47,620 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_linux_block_queue_check_final_state [2023-11-23 15:41:47,620 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-23 15:41:47,620 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE2 [2023-11-23 15:41:47,620 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2023-11-23 15:41:47,620 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2023-11-23 15:41:47,620 INFO L130 BoogieDeclarations]: Found specification of procedure virtblk_get_cache_mode [2023-11-23 15:41:47,620 INFO L138 BoogieDeclarations]: Found implementation of procedure virtblk_get_cache_mode [2023-11-23 15:41:47,620 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE8 [2023-11-23 15:41:47,620 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2023-11-23 15:41:47,621 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2023-11-23 15:41:47,621 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_linux_block_request_check_final_state [2023-11-23 15:41:47,621 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_linux_block_request_check_final_state [2023-11-23 15:41:47,621 INFO L130 BoogieDeclarations]: Found specification of procedure string_get_size [2023-11-23 15:41:47,621 INFO L138 BoogieDeclarations]: Found implementation of procedure string_get_size [2023-11-23 15:41:47,621 INFO L130 BoogieDeclarations]: Found specification of procedure blk_mq_free_tag_set [2023-11-23 15:41:47,621 INFO L138 BoogieDeclarations]: Found implementation of procedure blk_mq_free_tag_set [2023-11-23 15:41:47,621 INFO L130 BoogieDeclarations]: Found specification of procedure virtblk_update_cache_mode [2023-11-23 15:41:47,621 INFO L138 BoogieDeclarations]: Found implementation of procedure virtblk_update_cache_mode [2023-11-23 15:41:47,622 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_linux_block_queue_blk_cleanup_queue [2023-11-23 15:41:47,622 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_linux_block_queue_blk_cleanup_queue [2023-11-23 15:41:47,622 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_in_interrupt_context [2023-11-23 15:41:47,622 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_in_interrupt_context [2023-11-23 15:41:47,622 INFO L130 BoogieDeclarations]: Found specification of procedure flush_work [2023-11-23 15:41:47,622 INFO L138 BoogieDeclarations]: Found implementation of procedure flush_work [2023-11-23 15:41:47,622 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assume [2023-11-23 15:41:47,622 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assume [2023-11-23 15:41:47,622 INFO L130 BoogieDeclarations]: Found specification of procedure blk_queue_flush [2023-11-23 15:41:47,623 INFO L138 BoogieDeclarations]: Found implementation of procedure blk_queue_flush [2023-11-23 15:41:47,623 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_linux_kernel_rcu_update_lock_bh_check_final_state [2023-11-23 15:41:47,623 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_linux_kernel_rcu_update_lock_bh_check_final_state [2023-11-23 15:41:47,623 INFO L130 BoogieDeclarations]: Found specification of procedure ida_simple_remove [2023-11-23 15:41:47,623 INFO L138 BoogieDeclarations]: Found implementation of procedure ida_simple_remove [2023-11-23 15:41:47,623 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_linux_block_genhd_check_final_state [2023-11-23 15:41:47,623 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_linux_block_genhd_check_final_state [2023-11-23 15:41:47,623 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_after_alloc [2023-11-23 15:41:47,624 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_after_alloc [2023-11-23 15:41:47,624 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_linux_net_register_reset_error_counter [2023-11-23 15:41:47,624 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_linux_net_register_reset_error_counter [2023-11-23 15:41:47,624 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_alloc_flags [2023-11-23 15:41:47,624 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_alloc_flags [2023-11-23 15:41:47,624 INFO L130 BoogieDeclarations]: Found specification of procedure unregister_blkdev [2023-11-23 15:41:47,624 INFO L138 BoogieDeclarations]: Found implementation of procedure unregister_blkdev [2023-11-23 15:41:47,624 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_linux_lib_idr_check_final_state [2023-11-23 15:41:47,624 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_linux_lib_idr_check_final_state [2023-11-23 15:41:47,625 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_linux_kernel_rcu_srcu_check_final_state [2023-11-23 15:41:47,625 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_linux_kernel_rcu_srcu_check_final_state [2023-11-23 15:41:47,625 INFO L130 BoogieDeclarations]: Found specification of procedure virtio_cread8 [2023-11-23 15:41:47,625 INFO L138 BoogieDeclarations]: Found implementation of procedure virtio_cread8 [2023-11-23 15:41:47,625 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-23 15:41:47,625 INFO L130 BoogieDeclarations]: Found specification of procedure revalidate_disk [2023-11-23 15:41:47,625 INFO L138 BoogieDeclarations]: Found implementation of procedure revalidate_disk [2023-11-23 15:41:47,625 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-23 15:41:47,625 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2023-11-23 15:41:47,626 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2023-11-23 15:41:47,626 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-23 15:41:47,626 INFO L130 BoogieDeclarations]: Found specification of procedure blk_cleanup_queue [2023-11-23 15:41:47,626 INFO L138 BoogieDeclarations]: Found implementation of procedure blk_cleanup_queue [2023-11-23 15:41:47,626 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE8 [2023-11-23 15:41:47,626 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE2 [2023-11-23 15:41:47,626 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2023-11-23 15:41:47,626 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2023-11-23 15:41:47,626 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE4 [2023-11-23 15:41:47,627 INFO L130 BoogieDeclarations]: Found specification of procedure virtblk_remove [2023-11-23 15:41:47,627 INFO L138 BoogieDeclarations]: Found implementation of procedure virtblk_remove [2023-11-23 15:41:47,627 INFO L130 BoogieDeclarations]: Found specification of procedure virtblk_cache_type_store [2023-11-23 15:41:47,627 INFO L138 BoogieDeclarations]: Found implementation of procedure virtblk_cache_type_store [2023-11-23 15:41:47,627 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~~u32~0 [2023-11-23 15:41:47,627 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~~u32~0 [2023-11-23 15:41:47,627 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_linux_usb_register_reset_error_counter [2023-11-23 15:41:47,627 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_linux_usb_register_reset_error_counter [2023-11-23 15:41:47,627 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE1 [2023-11-23 15:41:47,627 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-23 15:41:47,628 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-23 15:41:47,628 INFO L130 BoogieDeclarations]: Found specification of procedure IS_ERR [2023-11-23 15:41:47,628 INFO L138 BoogieDeclarations]: Found implementation of procedure IS_ERR [2023-11-23 15:41:47,628 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-11-23 15:41:47,628 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-11-23 15:41:47,628 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2023-11-23 15:41:47,628 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE8 [2023-11-23 15:41:47,628 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2023-11-23 15:41:47,628 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2023-11-23 15:41:47,629 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2 [2023-11-23 15:41:47,629 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2023-11-23 15:41:47,629 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2023-11-23 15:41:47,629 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2023-11-23 15:41:47,629 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~C_UINT~X~$Pointer$~X~C_UINT~TO~VOID [2023-11-23 15:41:47,629 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~C_UINT~X~$Pointer$~X~C_UINT~TO~VOID [2023-11-23 15:41:47,629 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlock [2023-11-23 15:41:47,629 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlock [2023-11-23 15:41:47,629 INFO L130 BoogieDeclarations]: Found specification of procedure virtio_cread32 [2023-11-23 15:41:47,630 INFO L138 BoogieDeclarations]: Found implementation of procedure virtio_cread32 [2023-11-23 15:41:47,630 INFO L130 BoogieDeclarations]: Found specification of procedure destroy_workqueue [2023-11-23 15:41:47,630 INFO L138 BoogieDeclarations]: Found implementation of procedure destroy_workqueue [2023-11-23 15:41:47,630 INFO L130 BoogieDeclarations]: Found specification of procedure del_gendisk [2023-11-23 15:41:47,630 INFO L138 BoogieDeclarations]: Found implementation of procedure del_gendisk [2023-11-23 15:41:47,630 INFO L130 BoogieDeclarations]: Found specification of procedure device_create_file [2023-11-23 15:41:47,630 INFO L138 BoogieDeclarations]: Found implementation of procedure device_create_file [2023-11-23 15:41:47,630 INFO L130 BoogieDeclarations]: Found specification of procedure set_capacity [2023-11-23 15:41:47,630 INFO L138 BoogieDeclarations]: Found implementation of procedure set_capacity [2023-11-23 15:41:47,631 INFO L130 BoogieDeclarations]: Found specification of procedure virtio_cread16 [2023-11-23 15:41:47,631 INFO L138 BoogieDeclarations]: Found implementation of procedure virtio_cread16 [2023-11-23 15:41:47,631 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_linux_net_sock_check_final_state [2023-11-23 15:41:47,631 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_linux_net_sock_check_final_state [2023-11-23 15:41:47,631 INFO L130 BoogieDeclarations]: Found specification of procedure virtio_has_feature [2023-11-23 15:41:47,631 INFO L138 BoogieDeclarations]: Found implementation of procedure virtio_has_feature [2023-11-23 15:41:47,631 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_linux_usb_gadget_check_final_state [2023-11-23 15:41:47,631 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_linux_usb_gadget_check_final_state [2023-11-23 15:41:47,631 INFO L130 BoogieDeclarations]: Found specification of procedure virtio_cread64 [2023-11-23 15:41:47,632 INFO L138 BoogieDeclarations]: Found implementation of procedure virtio_cread64 [2023-11-23 15:41:47,632 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-23 15:41:47,632 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_linux_fs_sysfs_check_final_state [2023-11-23 15:41:47,632 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_linux_fs_sysfs_check_final_state [2023-11-23 15:41:47,632 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_block_request__double_get [2023-11-23 15:41:47,632 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_block_request__double_get [2023-11-23 15:41:47,632 INFO L130 BoogieDeclarations]: Found specification of procedure blk_mq_rq_to_pdu [2023-11-23 15:41:47,632 INFO L138 BoogieDeclarations]: Found implementation of procedure blk_mq_rq_to_pdu [2023-11-23 15:41:47,632 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-23 15:41:47,633 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE8 [2023-11-23 15:41:47,633 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2023-11-23 15:41:47,633 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2 [2023-11-23 15:41:47,633 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2023-11-23 15:41:47,633 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-11-23 15:41:47,633 INFO L130 BoogieDeclarations]: Found specification of procedure virtio32_to_cpu [2023-11-23 15:41:47,633 INFO L138 BoogieDeclarations]: Found implementation of procedure virtio32_to_cpu [2023-11-23 15:41:47,633 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_linux_net_rtnetlink_check_final_state [2023-11-23 15:41:47,633 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_linux_net_rtnetlink_check_final_state [2023-11-23 15:41:47,634 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_positive_int [2023-11-23 15:41:47,634 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_positive_int [2023-11-23 15:41:47,634 INFO L130 BoogieDeclarations]: Found specification of procedure blk_mq_start_stopped_hw_queues [2023-11-23 15:41:47,634 INFO L138 BoogieDeclarations]: Found implementation of procedure blk_mq_start_stopped_hw_queues [2023-11-23 15:41:47,634 INFO L130 BoogieDeclarations]: Found specification of procedure blk_queue_max_segment_size [2023-11-23 15:41:47,634 INFO L138 BoogieDeclarations]: Found implementation of procedure blk_queue_max_segment_size [2023-11-23 15:41:47,634 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_linux_kernel_rcu_update_lock_check_final_state [2023-11-23 15:41:47,634 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_linux_kernel_rcu_update_lock_check_final_state [2023-11-23 15:41:47,634 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_linux_usb_urb_check_final_state [2023-11-23 15:41:47,634 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_linux_usb_urb_check_final_state [2023-11-23 15:41:47,635 INFO L130 BoogieDeclarations]: Found specification of procedure __ldv_linux_kernel_locking_spinlock_spin_lock [2023-11-23 15:41:47,635 INFO L138 BoogieDeclarations]: Found implementation of procedure __ldv_linux_kernel_locking_spinlock_spin_lock [2023-11-23 15:41:47,635 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_linux_kernel_locking_rwlock_check_final_state [2023-11-23 15:41:47,635 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_linux_kernel_locking_rwlock_check_final_state [2023-11-23 15:41:47,635 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2023-11-23 15:41:47,635 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2023-11-23 15:41:47,635 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_linux_fs_char_dev_check_final_state [2023-11-23 15:41:47,635 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_linux_fs_char_dev_check_final_state [2023-11-23 15:41:47,635 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE4 [2023-11-23 15:41:47,635 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE2 [2023-11-23 15:41:47,636 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE1 [2023-11-23 15:41:47,636 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE8 [2023-11-23 15:41:47,636 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2023-11-23 15:41:47,636 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2023-11-23 15:41:47,636 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_linux_kernel_locking_spinlock_spin_lock_lock_of_virtio_blk_vq [2023-11-23 15:41:47,636 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_linux_kernel_locking_spinlock_spin_lock_lock_of_virtio_blk_vq [2023-11-23 15:41:47,636 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_linux_drivers_base_class_check_final_state [2023-11-23 15:41:47,636 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_linux_drivers_base_class_check_final_state [2023-11-23 15:41:47,636 INFO L130 BoogieDeclarations]: Found specification of procedure PTR_ERR [2023-11-23 15:41:47,637 INFO L138 BoogieDeclarations]: Found implementation of procedure PTR_ERR [2023-11-23 15:41:47,637 INFO L130 BoogieDeclarations]: Found specification of procedure queue_logical_block_size [2023-11-23 15:41:47,637 INFO L138 BoogieDeclarations]: Found implementation of procedure queue_logical_block_size [2023-11-23 15:41:47,637 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free [2023-11-23 15:41:47,637 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free [2023-11-23 15:41:47,637 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_linux_kernel_rcu_update_lock_sched_check_final_state [2023-11-23 15:41:47,637 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_linux_kernel_rcu_update_lock_sched_check_final_state [2023-11-23 15:41:47,637 INFO L130 BoogieDeclarations]: Found specification of procedure put_disk [2023-11-23 15:41:47,637 INFO L138 BoogieDeclarations]: Found implementation of procedure put_disk [2023-11-23 15:41:47,637 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_linux_block_genhd_put_disk [2023-11-23 15:41:47,638 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_linux_block_genhd_put_disk [2023-11-23 15:41:47,638 INFO L130 BoogieDeclarations]: Found specification of procedure virtio_device_ready [2023-11-23 15:41:47,638 INFO L138 BoogieDeclarations]: Found implementation of procedure virtio_device_ready [2023-11-23 15:41:48,134 INFO L241 CfgBuilder]: Building ICFG [2023-11-23 15:41:48,138 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-23 15:41:48,296 INFO L775 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2023-11-23 15:41:56,879 INFO L282 CfgBuilder]: Performing block encoding [2023-11-23 15:41:57,111 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-23 15:41:57,112 INFO L309 CfgBuilder]: Removed 15 assume(true) statements. [2023-11-23 15:41:57,113 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:41:57 BoogieIcfgContainer [2023-11-23 15:41:57,113 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-23 15:41:57,115 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-23 15:41:57,115 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-23 15:41:57,117 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-23 15:41:57,117 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 03:41:44" (1/3) ... [2023-11-23 15:41:57,118 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c1e4269 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 03:41:57, skipping insertion in model container [2023-11-23 15:41:57,119 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:41:47" (2/3) ... [2023-11-23 15:41:57,120 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c1e4269 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 03:41:57, skipping insertion in model container [2023-11-23 15:41:57,120 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:41:57" (3/3) ... [2023-11-23 15:41:57,121 INFO L112 eAbstractionObserver]: Analyzing ICFG linux-4.0-rc1---drivers--block--virtio_blk.ko.cil.i [2023-11-23 15:41:57,138 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-23 15:41:57,138 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 476 error locations. [2023-11-23 15:41:57,203 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-23 15:41:57,211 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@621c802f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-23 15:41:57,211 INFO L358 AbstractCegarLoop]: Starting to check reachability of 476 error locations. [2023-11-23 15:41:57,222 INFO L276 IsEmpty]: Start isEmpty. Operand has 1682 states, 822 states have (on average 1.8309002433090025) internal successors, (1505), 1339 states have internal predecessors, (1505), 314 states have call successors, (314), 81 states have call predecessors, (314), 80 states have return successors, (311), 309 states have call predecessors, (311), 311 states have call successors, (311) [2023-11-23 15:41:57,231 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2023-11-23 15:41:57,231 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 15:41:57,232 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 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] [2023-11-23 15:41:57,233 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, virtblk_update_cache_modeErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, virtblk_update_cache_modeErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 473 more)] === [2023-11-23 15:41:57,237 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 15:41:57,238 INFO L85 PathProgramCache]: Analyzing trace with hash -39919169, now seen corresponding path program 1 times [2023-11-23 15:41:57,249 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-23 15:41:57,250 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [506162314] [2023-11-23 15:41:57,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 15:41:57,250 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-23 15:41:57,251 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-11-23 15:41:57,252 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) [2023-11-23 15:41:57,268 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 [2023-11-23 15:41:57,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:41:57,949 INFO L262 TraceCheckSpWp]: Trace formula consists of 632 conjuncts, 11 conjunts are in the unsatisfiable core [2023-11-23 15:41:57,954 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 15:41:58,216 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-11-23 15:41:58,218 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 15:41:58,219 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-23 15:41:58,219 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [506162314] [2023-11-23 15:41:58,220 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [506162314] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 15:41:58,220 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 15:41:58,220 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-23 15:41:58,221 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [714538469] [2023-11-23 15:41:58,222 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 15:41:58,225 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-23 15:41:58,225 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-23 15:41:58,245 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-23 15:41:58,245 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-23 15:41:58,249 INFO L87 Difference]: Start difference. First operand has 1682 states, 822 states have (on average 1.8309002433090025) internal successors, (1505), 1339 states have internal predecessors, (1505), 314 states have call successors, (314), 81 states have call predecessors, (314), 80 states have return successors, (311), 309 states have call predecessors, (311), 311 states have call successors, (311) Second operand has 5 states, 5 states have (on average 4.8) internal successors, (24), 4 states have internal predecessors, (24), 2 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (9), 3 states have call predecessors, (9), 2 states have call successors, (9) [2023-11-23 15:42:04,161 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 15:42:04,161 INFO L93 Difference]: Finished difference Result 1976 states and 2403 transitions. [2023-11-23 15:42:04,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-23 15:42:04,167 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.8) internal successors, (24), 4 states have internal predecessors, (24), 2 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (9), 3 states have call predecessors, (9), 2 states have call successors, (9) Word has length 46 [2023-11-23 15:42:04,167 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 15:42:04,190 INFO L225 Difference]: With dead ends: 1976 [2023-11-23 15:42:04,193 INFO L226 Difference]: Without dead ends: 1959 [2023-11-23 15:42:04,195 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-11-23 15:42:04,199 INFO L413 NwaCegarLoop]: 1626 mSDtfsCounter, 569 mSDsluCounter, 4855 mSDsCounter, 0 mSdLazyCounter, 874 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 572 SdHoareTripleChecker+Valid, 6481 SdHoareTripleChecker+Invalid, 875 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 874 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.6s IncrementalHoareTripleChecker+Time [2023-11-23 15:42:04,200 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [572 Valid, 6481 Invalid, 875 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 874 Invalid, 0 Unknown, 0 Unchecked, 5.6s Time] [2023-11-23 15:42:04,216 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1959 states. [2023-11-23 15:42:04,346 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1959 to 1742. [2023-11-23 15:42:04,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1742 states, 873 states have (on average 1.7869415807560138) internal successors, (1560), 1367 states have internal predecessors, (1560), 328 states have call successors, (328), 103 states have call predecessors, (328), 102 states have return successors, (297), 291 states have call predecessors, (297), 294 states have call successors, (297) [2023-11-23 15:42:04,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1742 states to 1742 states and 2185 transitions. [2023-11-23 15:42:04,364 INFO L78 Accepts]: Start accepts. Automaton has 1742 states and 2185 transitions. Word has length 46 [2023-11-23 15:42:04,365 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 15:42:04,365 INFO L495 AbstractCegarLoop]: Abstraction has 1742 states and 2185 transitions. [2023-11-23 15:42:04,366 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.8) internal successors, (24), 4 states have internal predecessors, (24), 2 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (9), 3 states have call predecessors, (9), 2 states have call successors, (9) [2023-11-23 15:42:04,366 INFO L276 IsEmpty]: Start isEmpty. Operand 1742 states and 2185 transitions. [2023-11-23 15:42:04,369 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2023-11-23 15:42:04,369 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 15:42:04,369 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 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, 1] [2023-11-23 15:42:04,381 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 [2023-11-23 15:42:04,579 WARN L477 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 [2023-11-23 15:42:04,580 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, virtblk_update_cache_modeErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, virtblk_update_cache_modeErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 473 more)] === [2023-11-23 15:42:04,581 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 15:42:04,581 INFO L85 PathProgramCache]: Analyzing trace with hash 448924315, now seen corresponding path program 1 times [2023-11-23 15:42:04,581 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-23 15:42:04,582 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1558959390] [2023-11-23 15:42:04,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 15:42:04,582 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-23 15:42:04,582 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-11-23 15:42:04,583 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) [2023-11-23 15:42:04,585 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 [2023-11-23 15:42:05,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:42:05,155 INFO L262 TraceCheckSpWp]: Trace formula consists of 612 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-23 15:42:05,157 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 15:42:05,654 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-11-23 15:42:05,654 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 15:42:05,654 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-23 15:42:05,654 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1558959390] [2023-11-23 15:42:05,654 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1558959390] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 15:42:05,654 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 15:42:05,655 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-23 15:42:05,655 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [82854852] [2023-11-23 15:42:05,655 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 15:42:05,655 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-23 15:42:05,655 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-23 15:42:05,656 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-23 15:42:05,656 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-23 15:42:05,656 INFO L87 Difference]: Start difference. First operand 1742 states and 2185 transitions. Second operand has 4 states, 4 states have (on average 6.25) internal successors, (25), 3 states have internal predecessors, (25), 2 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) [2023-11-23 15:42:08,677 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 15:42:08,677 INFO L93 Difference]: Finished difference Result 1741 states and 2183 transitions. [2023-11-23 15:42:08,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-23 15:42:08,679 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.25) internal successors, (25), 3 states have internal predecessors, (25), 2 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) Word has length 50 [2023-11-23 15:42:08,679 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 15:42:08,685 INFO L225 Difference]: With dead ends: 1741 [2023-11-23 15:42:08,688 INFO L226 Difference]: Without dead ends: 1741 [2023-11-23 15:42:08,689 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-23 15:42:08,689 INFO L413 NwaCegarLoop]: 1598 mSDtfsCounter, 1773 mSDsluCounter, 1598 mSDsCounter, 0 mSdLazyCounter, 426 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1773 SdHoareTripleChecker+Valid, 3196 SdHoareTripleChecker+Invalid, 426 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 426 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2023-11-23 15:42:08,690 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1773 Valid, 3196 Invalid, 426 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 426 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2023-11-23 15:42:08,693 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1741 states. [2023-11-23 15:42:08,736 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1741 to 1741. [2023-11-23 15:42:08,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1741 states, 873 states have (on average 1.7857961053837343) internal successors, (1559), 1366 states have internal predecessors, (1559), 327 states have call successors, (327), 103 states have call predecessors, (327), 102 states have return successors, (297), 291 states have call predecessors, (297), 294 states have call successors, (297) [2023-11-23 15:42:08,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1741 states to 1741 states and 2183 transitions. [2023-11-23 15:42:08,746 INFO L78 Accepts]: Start accepts. Automaton has 1741 states and 2183 transitions. Word has length 50 [2023-11-23 15:42:08,747 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 15:42:08,748 INFO L495 AbstractCegarLoop]: Abstraction has 1741 states and 2183 transitions. [2023-11-23 15:42:08,748 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.25) internal successors, (25), 3 states have internal predecessors, (25), 2 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) [2023-11-23 15:42:08,748 INFO L276 IsEmpty]: Start isEmpty. Operand 1741 states and 2183 transitions. [2023-11-23 15:42:08,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2023-11-23 15:42:08,754 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 15:42:08,754 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 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, 1, 1, 1, 1, 1, 1] [2023-11-23 15:42:08,769 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 (3)] Forceful destruction successful, exit code 0 [2023-11-23 15:42:08,956 WARN L477 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 [2023-11-23 15:42:08,956 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, virtblk_update_cache_modeErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, virtblk_update_cache_modeErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 473 more)] === [2023-11-23 15:42:08,957 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 15:42:08,957 INFO L85 PathProgramCache]: Analyzing trace with hash -707204196, now seen corresponding path program 1 times [2023-11-23 15:42:08,958 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-23 15:42:08,958 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1223978731] [2023-11-23 15:42:08,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 15:42:08,958 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-23 15:42:08,958 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-11-23 15:42:08,992 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) [2023-11-23 15:42:09,027 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 [2023-11-23 15:42:09,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:42:09,546 INFO L262 TraceCheckSpWp]: Trace formula consists of 620 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-23 15:42:09,548 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 15:42:10,084 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-11-23 15:42:10,084 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 15:42:10,084 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-23 15:42:10,084 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1223978731] [2023-11-23 15:42:10,084 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1223978731] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 15:42:10,084 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 15:42:10,085 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-23 15:42:10,085 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1276237824] [2023-11-23 15:42:10,085 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 15:42:10,085 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-23 15:42:10,085 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-23 15:42:10,085 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-23 15:42:10,085 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-23 15:42:10,086 INFO L87 Difference]: Start difference. First operand 1741 states and 2183 transitions. Second operand has 4 states, 4 states have (on average 7.0) internal successors, (28), 3 states have internal predecessors, (28), 2 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) [2023-11-23 15:42:15,563 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 15:42:15,563 INFO L93 Difference]: Finished difference Result 3147 states and 3886 transitions. [2023-11-23 15:42:15,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-23 15:42:15,564 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.0) internal successors, (28), 3 states have internal predecessors, (28), 2 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) Word has length 55 [2023-11-23 15:42:15,565 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 15:42:15,574 INFO L225 Difference]: With dead ends: 3147 [2023-11-23 15:42:15,574 INFO L226 Difference]: Without dead ends: 3147 [2023-11-23 15:42:15,575 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-23 15:42:15,575 INFO L413 NwaCegarLoop]: 2075 mSDtfsCounter, 1690 mSDsluCounter, 3636 mSDsCounter, 0 mSdLazyCounter, 764 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1690 SdHoareTripleChecker+Valid, 5711 SdHoareTripleChecker+Invalid, 765 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 764 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.3s IncrementalHoareTripleChecker+Time [2023-11-23 15:42:15,576 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1690 Valid, 5711 Invalid, 765 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 764 Invalid, 0 Unknown, 0 Unchecked, 5.3s Time] [2023-11-23 15:42:15,579 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3147 states. [2023-11-23 15:42:15,622 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3147 to 2582. [2023-11-23 15:42:15,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2582 states, 1481 states have (on average 1.8230925050641458) internal successors, (2700), 1993 states have internal predecessors, (2700), 504 states have call successors, (504), 159 states have call predecessors, (504), 158 states have return successors, (489), 463 states have call predecessors, (489), 471 states have call successors, (489) [2023-11-23 15:42:15,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2582 states to 2582 states and 3693 transitions. [2023-11-23 15:42:15,635 INFO L78 Accepts]: Start accepts. Automaton has 2582 states and 3693 transitions. Word has length 55 [2023-11-23 15:42:15,635 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 15:42:15,635 INFO L495 AbstractCegarLoop]: Abstraction has 2582 states and 3693 transitions. [2023-11-23 15:42:15,635 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.0) internal successors, (28), 3 states have internal predecessors, (28), 2 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) [2023-11-23 15:42:15,636 INFO L276 IsEmpty]: Start isEmpty. Operand 2582 states and 3693 transitions. [2023-11-23 15:42:15,636 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2023-11-23 15:42:15,636 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 15:42:15,637 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 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, 1, 1] [2023-11-23 15:42:15,649 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 (4)] Forceful destruction successful, exit code 0 [2023-11-23 15:42:15,852 WARN L477 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 [2023-11-23 15:42:15,852 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, virtblk_update_cache_modeErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, virtblk_update_cache_modeErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 473 more)] === [2023-11-23 15:42:15,853 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 15:42:15,853 INFO L85 PathProgramCache]: Analyzing trace with hash -1629706241, now seen corresponding path program 1 times [2023-11-23 15:42:15,854 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-23 15:42:15,854 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [230450818] [2023-11-23 15:42:15,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 15:42:15,854 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-23 15:42:15,854 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-11-23 15:42:15,855 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) [2023-11-23 15:42:15,886 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 [2023-11-23 15:42:16,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:42:16,508 INFO L262 TraceCheckSpWp]: Trace formula consists of 663 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-23 15:42:16,510 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 15:42:16,548 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2023-11-23 15:42:17,098 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2023-11-23 15:42:17,098 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 15:42:17,098 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-23 15:42:17,098 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [230450818] [2023-11-23 15:42:17,098 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [230450818] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 15:42:17,098 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 15:42:17,098 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-23 15:42:17,098 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [299472145] [2023-11-23 15:42:17,099 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 15:42:17,099 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-23 15:42:17,099 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-23 15:42:17,099 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-23 15:42:17,099 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-11-23 15:42:17,100 INFO L87 Difference]: Start difference. First operand 2582 states and 3693 transitions. Second operand has 7 states, 5 states have (on average 5.2) internal successors, (26), 6 states have internal predecessors, (26), 2 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (12), 3 states have call predecessors, (12), 2 states have call successors, (12) [2023-11-23 15:42:43,483 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 15:42:43,483 INFO L93 Difference]: Finished difference Result 3211 states and 4546 transitions. [2023-11-23 15:42:43,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-23 15:42:43,484 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 5.2) internal successors, (26), 6 states have internal predecessors, (26), 2 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (12), 3 states have call predecessors, (12), 2 states have call successors, (12) Word has length 59 [2023-11-23 15:42:43,484 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 15:42:43,494 INFO L225 Difference]: With dead ends: 3211 [2023-11-23 15:42:43,494 INFO L226 Difference]: Without dead ends: 3211 [2023-11-23 15:42:43,494 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 48 SyntacticMatches, 5 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2023-11-23 15:42:43,495 INFO L413 NwaCegarLoop]: 1400 mSDtfsCounter, 1607 mSDsluCounter, 3233 mSDsCounter, 0 mSdLazyCounter, 4576 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 24.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1607 SdHoareTripleChecker+Valid, 4633 SdHoareTripleChecker+Invalid, 4628 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 4576 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 26.0s IncrementalHoareTripleChecker+Time [2023-11-23 15:42:43,495 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1607 Valid, 4633 Invalid, 4628 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [52 Valid, 4576 Invalid, 0 Unknown, 0 Unchecked, 26.0s Time] [2023-11-23 15:42:43,498 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3211 states. [2023-11-23 15:42:43,541 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3211 to 2966. [2023-11-23 15:42:43,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2966 states, 1711 states have (on average 1.745178258328463) internal successors, (2986), 2248 states have internal predecessors, (2986), 598 states have call successors, (598), 223 states have call predecessors, (598), 219 states have return successors, (616), 522 states have call predecessors, (616), 565 states have call successors, (616) [2023-11-23 15:42:43,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2966 states to 2966 states and 4200 transitions. [2023-11-23 15:42:43,556 INFO L78 Accepts]: Start accepts. Automaton has 2966 states and 4200 transitions. Word has length 59 [2023-11-23 15:42:43,557 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 15:42:43,557 INFO L495 AbstractCegarLoop]: Abstraction has 2966 states and 4200 transitions. [2023-11-23 15:42:43,557 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 5.2) internal successors, (26), 6 states have internal predecessors, (26), 2 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (12), 3 states have call predecessors, (12), 2 states have call successors, (12) [2023-11-23 15:42:43,557 INFO L276 IsEmpty]: Start isEmpty. Operand 2966 states and 4200 transitions. [2023-11-23 15:42:43,558 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2023-11-23 15:42:43,558 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 15:42:43,558 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 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, 1, 1] [2023-11-23 15:42:43,584 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 [2023-11-23 15:42:43,770 WARN L477 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 [2023-11-23 15:42:43,770 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, virtblk_update_cache_modeErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, virtblk_update_cache_modeErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 473 more)] === [2023-11-23 15:42:43,771 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 15:42:43,771 INFO L85 PathProgramCache]: Analyzing trace with hash -1629706240, now seen corresponding path program 1 times [2023-11-23 15:42:43,772 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-23 15:42:43,772 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1554163558] [2023-11-23 15:42:43,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 15:42:43,773 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-23 15:42:43,773 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-11-23 15:42:43,774 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) [2023-11-23 15:42:43,832 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 (6)] Waiting until timeout for monitored process [2023-11-23 15:42:44,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:42:44,461 INFO L262 TraceCheckSpWp]: Trace formula consists of 663 conjuncts, 16 conjunts are in the unsatisfiable core [2023-11-23 15:42:44,463 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 15:42:44,486 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-11-23 15:42:44,832 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2023-11-23 15:42:44,832 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 15:42:44,832 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-23 15:42:44,832 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1554163558] [2023-11-23 15:42:44,832 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1554163558] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 15:42:44,832 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 15:42:44,832 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-23 15:42:44,832 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1853899762] [2023-11-23 15:42:44,833 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 15:42:44,833 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-23 15:42:44,833 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-23 15:42:44,833 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-23 15:42:44,833 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-23 15:42:44,833 INFO L87 Difference]: Start difference. First operand 2966 states and 4200 transitions. Second operand has 6 states, 4 states have (on average 5.75) internal successors, (23), 5 states have internal predecessors, (23), 2 states have call successors, (12), 1 states have call predecessors, (12), 2 states have return successors, (12), 3 states have call predecessors, (12), 2 states have call successors, (12) [2023-11-23 15:43:02,243 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 15:43:02,243 INFO L93 Difference]: Finished difference Result 2965 states and 4199 transitions. [2023-11-23 15:43:02,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-23 15:43:02,245 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 4 states have (on average 5.75) internal successors, (23), 5 states have internal predecessors, (23), 2 states have call successors, (12), 1 states have call predecessors, (12), 2 states have return successors, (12), 3 states have call predecessors, (12), 2 states have call successors, (12) Word has length 59 [2023-11-23 15:43:02,245 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 15:43:02,254 INFO L225 Difference]: With dead ends: 2965 [2023-11-23 15:43:02,255 INFO L226 Difference]: Without dead ends: 2965 [2023-11-23 15:43:02,255 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-11-23 15:43:02,256 INFO L413 NwaCegarLoop]: 1586 mSDtfsCounter, 7 mSDsluCounter, 4864 mSDsCounter, 0 mSdLazyCounter, 2584 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 15.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 6450 SdHoareTripleChecker+Invalid, 2584 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2584 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 17.2s IncrementalHoareTripleChecker+Time [2023-11-23 15:43:02,256 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 6450 Invalid, 2584 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 2584 Invalid, 0 Unknown, 0 Unchecked, 17.2s Time] [2023-11-23 15:43:02,259 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2965 states. [2023-11-23 15:43:02,301 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2965 to 2965. [2023-11-23 15:43:02,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2965 states, 1711 states have (on average 1.744593804792519) internal successors, (2985), 2247 states have internal predecessors, (2985), 598 states have call successors, (598), 223 states have call predecessors, (598), 219 states have return successors, (616), 522 states have call predecessors, (616), 565 states have call successors, (616) [2023-11-23 15:43:02,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2965 states to 2965 states and 4199 transitions. [2023-11-23 15:43:02,314 INFO L78 Accepts]: Start accepts. Automaton has 2965 states and 4199 transitions. Word has length 59 [2023-11-23 15:43:02,314 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 15:43:02,314 INFO L495 AbstractCegarLoop]: Abstraction has 2965 states and 4199 transitions. [2023-11-23 15:43:02,315 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 4 states have (on average 5.75) internal successors, (23), 5 states have internal predecessors, (23), 2 states have call successors, (12), 1 states have call predecessors, (12), 2 states have return successors, (12), 3 states have call predecessors, (12), 2 states have call successors, (12) [2023-11-23 15:43:02,315 INFO L276 IsEmpty]: Start isEmpty. Operand 2965 states and 4199 transitions. [2023-11-23 15:43:02,316 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2023-11-23 15:43:02,316 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 15:43:02,316 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 15:43:02,329 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 [2023-11-23 15:43:02,529 WARN L477 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 [2023-11-23 15:43:02,529 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, virtblk_update_cache_modeErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, virtblk_update_cache_modeErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 473 more)] === [2023-11-23 15:43:02,529 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 15:43:02,530 INFO L85 PathProgramCache]: Analyzing trace with hash 631290623, now seen corresponding path program 1 times [2023-11-23 15:43:02,530 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-23 15:43:02,530 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1891902722] [2023-11-23 15:43:02,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 15:43:02,531 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-23 15:43:02,531 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-11-23 15:43:02,532 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) [2023-11-23 15:43:02,532 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 [2023-11-23 15:43:03,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:43:03,100 INFO L262 TraceCheckSpWp]: Trace formula consists of 628 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-23 15:43:03,102 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 15:43:03,672 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-11-23 15:43:03,672 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 15:43:03,672 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-23 15:43:03,672 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1891902722] [2023-11-23 15:43:03,673 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1891902722] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 15:43:03,673 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 15:43:03,673 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-23 15:43:03,673 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1901341958] [2023-11-23 15:43:03,673 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 15:43:03,673 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-23 15:43:03,673 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-23 15:43:03,674 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-23 15:43:03,674 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-23 15:43:03,674 INFO L87 Difference]: Start difference. First operand 2965 states and 4199 transitions. Second operand has 4 states, 4 states have (on average 7.75) internal successors, (31), 3 states have internal predecessors, (31), 2 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (11), 1 states have call predecessors, (11), 1 states have call successors, (11) [2023-11-23 15:43:06,702 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 15:43:06,702 INFO L93 Difference]: Finished difference Result 2964 states and 4196 transitions. [2023-11-23 15:43:06,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-23 15:43:06,703 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.75) internal successors, (31), 3 states have internal predecessors, (31), 2 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (11), 1 states have call predecessors, (11), 1 states have call successors, (11) Word has length 60 [2023-11-23 15:43:06,703 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 15:43:06,712 INFO L225 Difference]: With dead ends: 2964 [2023-11-23 15:43:06,712 INFO L226 Difference]: Without dead ends: 2964 [2023-11-23 15:43:06,712 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-23 15:43:06,712 INFO L413 NwaCegarLoop]: 1593 mSDtfsCounter, 1758 mSDsluCounter, 1593 mSDsCounter, 0 mSdLazyCounter, 428 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1758 SdHoareTripleChecker+Valid, 3186 SdHoareTripleChecker+Invalid, 429 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 428 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2023-11-23 15:43:06,713 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1758 Valid, 3186 Invalid, 429 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 428 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2023-11-23 15:43:06,715 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2964 states. [2023-11-23 15:43:06,750 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2964 to 2964. [2023-11-23 15:43:06,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2964 states, 1711 states have (on average 1.7434248977206313) internal successors, (2983), 2246 states have internal predecessors, (2983), 597 states have call successors, (597), 223 states have call predecessors, (597), 219 states have return successors, (616), 522 states have call predecessors, (616), 565 states have call successors, (616) [2023-11-23 15:43:06,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2964 states to 2964 states and 4196 transitions. [2023-11-23 15:43:06,761 INFO L78 Accepts]: Start accepts. Automaton has 2964 states and 4196 transitions. Word has length 60 [2023-11-23 15:43:06,762 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 15:43:06,762 INFO L495 AbstractCegarLoop]: Abstraction has 2964 states and 4196 transitions. [2023-11-23 15:43:06,762 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.75) internal successors, (31), 3 states have internal predecessors, (31), 2 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (11), 1 states have call predecessors, (11), 1 states have call successors, (11) [2023-11-23 15:43:06,762 INFO L276 IsEmpty]: Start isEmpty. Operand 2964 states and 4196 transitions. [2023-11-23 15:43:06,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2023-11-23 15:43:06,763 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 15:43:06,763 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 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, 1, 1, 1, 1] [2023-11-23 15:43:06,776 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 (7)] Ended with exit code 0 [2023-11-23 15:43:06,974 WARN L477 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 [2023-11-23 15:43:06,974 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, virtblk_update_cache_modeErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, virtblk_update_cache_modeErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 473 more)] === [2023-11-23 15:43:06,975 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 15:43:06,975 INFO L85 PathProgramCache]: Analyzing trace with hash 1517828947, now seen corresponding path program 1 times [2023-11-23 15:43:06,975 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-23 15:43:06,975 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1576667620] [2023-11-23 15:43:06,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 15:43:06,976 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-23 15:43:06,976 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-11-23 15:43:06,976 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) [2023-11-23 15:43:06,977 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 [2023-11-23 15:43:07,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:43:07,699 INFO L262 TraceCheckSpWp]: Trace formula consists of 684 conjuncts, 11 conjunts are in the unsatisfiable core [2023-11-23 15:43:07,701 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 15:43:07,714 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2023-11-23 15:43:08,309 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2023-11-23 15:43:08,309 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 15:43:08,309 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-23 15:43:08,310 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1576667620] [2023-11-23 15:43:08,310 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1576667620] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 15:43:08,310 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 15:43:08,310 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-23 15:43:08,310 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1670689884] [2023-11-23 15:43:08,310 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 15:43:08,310 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-23 15:43:08,310 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-23 15:43:08,311 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-23 15:43:08,311 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2023-11-23 15:43:08,311 INFO L87 Difference]: Start difference. First operand 2964 states and 4196 transitions. Second operand has 8 states, 6 states have (on average 4.666666666666667) internal successors, (28), 7 states have internal predecessors, (28), 2 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (12), 3 states have call predecessors, (12), 2 states have call successors, (12) [2023-11-23 15:43:44,524 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 15:43:44,525 INFO L93 Difference]: Finished difference Result 3207 states and 4540 transitions. [2023-11-23 15:43:44,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-23 15:43:44,526 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 6 states have (on average 4.666666666666667) internal successors, (28), 7 states have internal predecessors, (28), 2 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (12), 3 states have call predecessors, (12), 2 states have call successors, (12) Word has length 61 [2023-11-23 15:43:44,526 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 15:43:44,537 INFO L225 Difference]: With dead ends: 3207 [2023-11-23 15:43:44,538 INFO L226 Difference]: Without dead ends: 3207 [2023-11-23 15:43:44,538 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 49 SyntacticMatches, 5 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2023-11-23 15:43:44,539 INFO L413 NwaCegarLoop]: 1393 mSDtfsCounter, 1598 mSDsluCounter, 4192 mSDsCounter, 0 mSdLazyCounter, 5614 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 34.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1598 SdHoareTripleChecker+Valid, 5585 SdHoareTripleChecker+Invalid, 5666 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 5614 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 35.8s IncrementalHoareTripleChecker+Time [2023-11-23 15:43:44,539 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1598 Valid, 5585 Invalid, 5666 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [52 Valid, 5614 Invalid, 0 Unknown, 0 Unchecked, 35.8s Time] [2023-11-23 15:43:44,542 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3207 states. [2023-11-23 15:43:44,587 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3207 to 2963. [2023-11-23 15:43:44,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2963 states, 1711 states have (on average 1.7428404441846874) internal successors, (2982), 2245 states have internal predecessors, (2982), 597 states have call successors, (597), 223 states have call predecessors, (597), 219 states have return successors, (616), 522 states have call predecessors, (616), 565 states have call successors, (616) [2023-11-23 15:43:44,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2963 states to 2963 states and 4195 transitions. [2023-11-23 15:43:44,600 INFO L78 Accepts]: Start accepts. Automaton has 2963 states and 4195 transitions. Word has length 61 [2023-11-23 15:43:44,600 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 15:43:44,601 INFO L495 AbstractCegarLoop]: Abstraction has 2963 states and 4195 transitions. [2023-11-23 15:43:44,601 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 6 states have (on average 4.666666666666667) internal successors, (28), 7 states have internal predecessors, (28), 2 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (12), 3 states have call predecessors, (12), 2 states have call successors, (12) [2023-11-23 15:43:44,601 INFO L276 IsEmpty]: Start isEmpty. Operand 2963 states and 4195 transitions. [2023-11-23 15:43:44,601 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2023-11-23 15:43:44,602 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 15:43:44,602 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 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, 1, 1, 1, 1] [2023-11-23 15:43:44,632 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 [2023-11-23 15:43:44,816 WARN L477 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 [2023-11-23 15:43:44,819 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, virtblk_update_cache_modeErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, virtblk_update_cache_modeErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 473 more)] === [2023-11-23 15:43:44,820 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 15:43:44,820 INFO L85 PathProgramCache]: Analyzing trace with hash 1517828948, now seen corresponding path program 1 times [2023-11-23 15:43:44,820 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-23 15:43:44,820 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [816041810] [2023-11-23 15:43:44,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 15:43:44,820 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-23 15:43:44,821 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-11-23 15:43:44,821 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) [2023-11-23 15:43:44,822 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 [2023-11-23 15:43:45,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:43:45,584 INFO L262 TraceCheckSpWp]: Trace formula consists of 684 conjuncts, 22 conjunts are in the unsatisfiable core [2023-11-23 15:43:45,586 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 15:43:45,601 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-11-23 15:43:46,161 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2023-11-23 15:43:46,161 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 15:43:46,161 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-23 15:43:46,161 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [816041810] [2023-11-23 15:43:46,161 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [816041810] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 15:43:46,161 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 15:43:46,161 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-23 15:43:46,162 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [418387979] [2023-11-23 15:43:46,162 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 15:43:46,162 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-23 15:43:46,162 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-23 15:43:46,162 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-23 15:43:46,162 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-23 15:43:46,163 INFO L87 Difference]: Start difference. First operand 2963 states and 4195 transitions. Second operand has 7 states, 5 states have (on average 5.0) internal successors, (25), 6 states have internal predecessors, (25), 2 states have call successors, (12), 1 states have call predecessors, (12), 2 states have return successors, (12), 3 states have call predecessors, (12), 2 states have call successors, (12) [2023-11-23 15:44:10,290 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 15:44:10,290 INFO L93 Difference]: Finished difference Result 2962 states and 4194 transitions. [2023-11-23 15:44:10,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-23 15:44:10,291 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 5.0) internal successors, (25), 6 states have internal predecessors, (25), 2 states have call successors, (12), 1 states have call predecessors, (12), 2 states have return successors, (12), 3 states have call predecessors, (12), 2 states have call successors, (12) Word has length 61 [2023-11-23 15:44:10,293 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 15:44:10,317 INFO L225 Difference]: With dead ends: 2962 [2023-11-23 15:44:10,318 INFO L226 Difference]: Without dead ends: 2962 [2023-11-23 15:44:10,318 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2023-11-23 15:44:10,319 INFO L413 NwaCegarLoop]: 1581 mSDtfsCounter, 7 mSDsluCounter, 6064 mSDsCounter, 0 mSdLazyCounter, 3172 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 22.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 7645 SdHoareTripleChecker+Invalid, 3174 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 3172 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 23.8s IncrementalHoareTripleChecker+Time [2023-11-23 15:44:10,319 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 7645 Invalid, 3174 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2 Valid, 3172 Invalid, 0 Unknown, 0 Unchecked, 23.8s Time] [2023-11-23 15:44:10,322 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2962 states. [2023-11-23 15:44:10,358 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2962 to 2962. [2023-11-23 15:44:10,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2962 states, 1711 states have (on average 1.7422559906487434) internal successors, (2981), 2244 states have internal predecessors, (2981), 597 states have call successors, (597), 223 states have call predecessors, (597), 219 states have return successors, (616), 522 states have call predecessors, (616), 565 states have call successors, (616) [2023-11-23 15:44:10,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2962 states to 2962 states and 4194 transitions. [2023-11-23 15:44:10,368 INFO L78 Accepts]: Start accepts. Automaton has 2962 states and 4194 transitions. Word has length 61 [2023-11-23 15:44:10,369 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 15:44:10,369 INFO L495 AbstractCegarLoop]: Abstraction has 2962 states and 4194 transitions. [2023-11-23 15:44:10,369 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 5.0) internal successors, (25), 6 states have internal predecessors, (25), 2 states have call successors, (12), 1 states have call predecessors, (12), 2 states have return successors, (12), 3 states have call predecessors, (12), 2 states have call successors, (12) [2023-11-23 15:44:10,370 INFO L276 IsEmpty]: Start isEmpty. Operand 2962 states and 4194 transitions. [2023-11-23 15:44:10,370 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2023-11-23 15:44:10,370 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 15:44:10,370 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 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, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 15:44:10,386 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 (9)] Forceful destruction successful, exit code 0 [2023-11-23 15:44:10,585 WARN L477 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 [2023-11-23 15:44:10,585 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_freeErr0ASSERT_VIOLATIONMEMORY_FREE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, virtblk_update_cache_modeErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, virtblk_update_cache_modeErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 473 more)] === [2023-11-23 15:44:10,585 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 15:44:10,586 INFO L85 PathProgramCache]: Analyzing trace with hash 304088487, now seen corresponding path program 1 times [2023-11-23 15:44:10,586 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-23 15:44:10,586 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1320781906] [2023-11-23 15:44:10,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 15:44:10,586 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-23 15:44:10,587 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-11-23 15:44:10,587 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) [2023-11-23 15:44:10,588 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 [2023-11-23 15:44:11,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:44:11,311 INFO L262 TraceCheckSpWp]: Trace formula consists of 696 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-23 15:44:11,313 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 15:44:11,841 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2023-11-23 15:44:11,841 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 15:44:11,841 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-23 15:44:11,842 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1320781906] [2023-11-23 15:44:11,842 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1320781906] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 15:44:11,842 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 15:44:11,842 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-23 15:44:11,842 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [796196726] [2023-11-23 15:44:11,842 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 15:44:11,843 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-23 15:44:11,843 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-23 15:44:11,843 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-23 15:44:11,844 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-11-23 15:44:11,844 INFO L87 Difference]: Start difference. First operand 2962 states and 4194 transitions. Second operand has 9 states, 7 states have (on average 3.857142857142857) internal successors, (27), 7 states have internal predecessors, (27), 3 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (12), 3 states have call predecessors, (12), 2 states have call successors, (12) [2023-11-23 15:44:23,153 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 15:44:23,153 INFO L93 Difference]: Finished difference Result 2969 states and 4200 transitions. [2023-11-23 15:44:23,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-23 15:44:23,154 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 7 states have (on average 3.857142857142857) internal successors, (27), 7 states have internal predecessors, (27), 3 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (12), 3 states have call predecessors, (12), 2 states have call successors, (12) Word has length 64 [2023-11-23 15:44:23,154 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 15:44:23,163 INFO L225 Difference]: With dead ends: 2969 [2023-11-23 15:44:23,163 INFO L226 Difference]: Without dead ends: 2969 [2023-11-23 15:44:23,164 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2023-11-23 15:44:23,164 INFO L413 NwaCegarLoop]: 1588 mSDtfsCounter, 977 mSDsluCounter, 10127 mSDsCounter, 0 mSdLazyCounter, 1616 mSolverCounterSat, 139 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 977 SdHoareTripleChecker+Valid, 11715 SdHoareTripleChecker+Invalid, 1755 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 139 IncrementalHoareTripleChecker+Valid, 1616 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.0s IncrementalHoareTripleChecker+Time [2023-11-23 15:44:23,164 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [977 Valid, 11715 Invalid, 1755 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [139 Valid, 1616 Invalid, 0 Unknown, 0 Unchecked, 11.0s Time] [2023-11-23 15:44:23,167 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2969 states. [2023-11-23 15:44:23,200 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2969 to 2967. [2023-11-23 15:44:23,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2967 states, 1715 states have (on average 1.7416909620991254) internal successors, (2987), 2248 states have internal predecessors, (2987), 597 states have call successors, (597), 224 states have call predecessors, (597), 220 states have return successors, (616), 522 states have call predecessors, (616), 565 states have call successors, (616) [2023-11-23 15:44:23,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2967 states to 2967 states and 4200 transitions. [2023-11-23 15:44:23,210 INFO L78 Accepts]: Start accepts. Automaton has 2967 states and 4200 transitions. Word has length 64 [2023-11-23 15:44:23,210 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 15:44:23,211 INFO L495 AbstractCegarLoop]: Abstraction has 2967 states and 4200 transitions. [2023-11-23 15:44:23,211 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 7 states have (on average 3.857142857142857) internal successors, (27), 7 states have internal predecessors, (27), 3 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (12), 3 states have call predecessors, (12), 2 states have call successors, (12) [2023-11-23 15:44:23,211 INFO L276 IsEmpty]: Start isEmpty. Operand 2967 states and 4200 transitions. [2023-11-23 15:44:23,212 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2023-11-23 15:44:23,212 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 15:44:23,212 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 15:44:23,227 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 (10)] Forceful destruction successful, exit code 0 [2023-11-23 15:44:23,424 WARN L477 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 [2023-11-23 15:44:23,425 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, virtblk_update_cache_modeErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, virtblk_update_cache_modeErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 473 more)] === [2023-11-23 15:44:23,425 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 15:44:23,426 INFO L85 PathProgramCache]: Analyzing trace with hash 2135418346, now seen corresponding path program 1 times [2023-11-23 15:44:23,426 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-23 15:44:23,426 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [633202473] [2023-11-23 15:44:23,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 15:44:23,427 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-23 15:44:23,427 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-11-23 15:44:23,428 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) [2023-11-23 15:44:23,429 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 [2023-11-23 15:44:24,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:44:24,026 INFO L262 TraceCheckSpWp]: Trace formula consists of 636 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-23 15:44:24,028 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 15:44:24,668 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-11-23 15:44:24,668 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 15:44:24,669 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-23 15:44:24,669 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [633202473] [2023-11-23 15:44:24,669 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [633202473] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 15:44:24,669 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 15:44:24,669 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-23 15:44:24,669 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1601228881] [2023-11-23 15:44:24,669 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 15:44:24,669 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-23 15:44:24,669 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-23 15:44:24,670 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-23 15:44:24,670 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-23 15:44:24,670 INFO L87 Difference]: Start difference. First operand 2967 states and 4200 transitions. Second operand has 4 states, 4 states have (on average 8.5) internal successors, (34), 3 states have internal predecessors, (34), 2 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2023-11-23 15:44:28,575 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 15:44:28,575 INFO L93 Difference]: Finished difference Result 3754 states and 5256 transitions. [2023-11-23 15:44:28,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-23 15:44:28,600 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.5) internal successors, (34), 3 states have internal predecessors, (34), 2 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) Word has length 65 [2023-11-23 15:44:28,600 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 15:44:28,611 INFO L225 Difference]: With dead ends: 3754 [2023-11-23 15:44:28,611 INFO L226 Difference]: Without dead ends: 3754 [2023-11-23 15:44:28,612 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-23 15:44:28,612 INFO L413 NwaCegarLoop]: 1612 mSDtfsCounter, 1748 mSDsluCounter, 1978 mSDsCounter, 0 mSdLazyCounter, 499 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1748 SdHoareTripleChecker+Valid, 3590 SdHoareTripleChecker+Invalid, 500 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 499 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.8s IncrementalHoareTripleChecker+Time [2023-11-23 15:44:28,612 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1748 Valid, 3590 Invalid, 500 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 499 Invalid, 0 Unknown, 0 Unchecked, 3.8s Time] [2023-11-23 15:44:28,615 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3754 states. [2023-11-23 15:44:28,672 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3754 to 3559. [2023-11-23 15:44:28,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3559 states, 2107 states have (on average 1.7104888467014714) internal successors, (3604), 2648 states have internal predecessors, (3604), 727 states have call successors, (727), 297 states have call predecessors, (727), 290 states have return successors, (746), 644 states have call predecessors, (746), 695 states have call successors, (746) [2023-11-23 15:44:28,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3559 states to 3559 states and 5077 transitions. [2023-11-23 15:44:28,685 INFO L78 Accepts]: Start accepts. Automaton has 3559 states and 5077 transitions. Word has length 65 [2023-11-23 15:44:28,685 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 15:44:28,685 INFO L495 AbstractCegarLoop]: Abstraction has 3559 states and 5077 transitions. [2023-11-23 15:44:28,686 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.5) internal successors, (34), 3 states have internal predecessors, (34), 2 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2023-11-23 15:44:28,686 INFO L276 IsEmpty]: Start isEmpty. Operand 3559 states and 5077 transitions. [2023-11-23 15:44:28,689 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2023-11-23 15:44:28,689 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 15:44:28,689 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 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, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 15:44:28,707 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 (11)] Forceful destruction successful, exit code 0 [2023-11-23 15:44:28,898 WARN L477 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 [2023-11-23 15:44:28,899 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_freeErr1ASSERT_VIOLATIONMEMORY_FREE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, virtblk_update_cache_modeErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, virtblk_update_cache_modeErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 473 more)] === [2023-11-23 15:44:28,899 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 15:44:28,899 INFO L85 PathProgramCache]: Analyzing trace with hash 836809793, now seen corresponding path program 1 times [2023-11-23 15:44:28,900 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-23 15:44:28,900 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [46301117] [2023-11-23 15:44:28,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 15:44:28,900 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-23 15:44:28,900 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-11-23 15:44:28,901 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) [2023-11-23 15:44:28,901 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 [2023-11-23 15:44:29,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:44:29,663 INFO L262 TraceCheckSpWp]: Trace formula consists of 697 conjuncts, 40 conjunts are in the unsatisfiable core [2023-11-23 15:44:29,666 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 15:44:36,291 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 25 proven. 4 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-11-23 15:44:36,291 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 15:44:41,170 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2023-11-23 15:44:41,170 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-23 15:44:41,170 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [46301117] [2023-11-23 15:44:41,170 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [46301117] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-23 15:44:41,170 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-23 15:44:41,170 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [18] total 32 [2023-11-23 15:44:41,171 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [873465488] [2023-11-23 15:44:41,171 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 15:44:41,171 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-11-23 15:44:41,171 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-23 15:44:41,171 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-11-23 15:44:41,172 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=133, Invalid=923, Unknown=0, NotChecked=0, Total=1056 [2023-11-23 15:44:41,172 INFO L87 Difference]: Start difference. First operand 3559 states and 5077 transitions. Second operand has 15 states, 9 states have (on average 3.4444444444444446) internal successors, (31), 11 states have internal predecessors, (31), 4 states have call successors, (13), 2 states have call predecessors, (13), 4 states have return successors, (12), 5 states have call predecessors, (12), 3 states have call successors, (12) [2023-11-23 15:45:18,144 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 15:45:18,144 INFO L93 Difference]: Finished difference Result 3566 states and 5082 transitions. [2023-11-23 15:45:18,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-23 15:45:18,145 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 9 states have (on average 3.4444444444444446) internal successors, (31), 11 states have internal predecessors, (31), 4 states have call successors, (13), 2 states have call predecessors, (13), 4 states have return successors, (12), 5 states have call predecessors, (12), 3 states have call successors, (12) Word has length 65 [2023-11-23 15:45:18,146 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 15:45:18,162 INFO L225 Difference]: With dead ends: 3566 [2023-11-23 15:45:18,162 INFO L226 Difference]: Without dead ends: 3566 [2023-11-23 15:45:18,163 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 89 SyntacticMatches, 8 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 430 ImplicationChecksByTransitivity, 6.5s TimeCoverageRelationStatistics Valid=151, Invalid=1109, Unknown=0, NotChecked=0, Total=1260 [2023-11-23 15:45:18,163 INFO L413 NwaCegarLoop]: 1563 mSDtfsCounter, 973 mSDsluCounter, 17703 mSDsCounter, 0 mSdLazyCounter, 4893 mSolverCounterSat, 141 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 33.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 975 SdHoareTripleChecker+Valid, 19266 SdHoareTripleChecker+Invalid, 5034 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 141 IncrementalHoareTripleChecker+Valid, 4893 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 36.3s IncrementalHoareTripleChecker+Time [2023-11-23 15:45:18,164 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [975 Valid, 19266 Invalid, 5034 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [141 Valid, 4893 Invalid, 0 Unknown, 0 Unchecked, 36.3s Time] [2023-11-23 15:45:18,167 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3566 states. [2023-11-23 15:45:18,226 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3566 to 3559. [2023-11-23 15:45:18,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3559 states, 2107 states have (on average 1.710014238253441) internal successors, (3603), 2648 states have internal predecessors, (3603), 727 states have call successors, (727), 297 states have call predecessors, (727), 290 states have return successors, (746), 644 states have call predecessors, (746), 695 states have call successors, (746) [2023-11-23 15:45:18,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3559 states to 3559 states and 5076 transitions. [2023-11-23 15:45:18,238 INFO L78 Accepts]: Start accepts. Automaton has 3559 states and 5076 transitions. Word has length 65 [2023-11-23 15:45:18,238 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 15:45:18,238 INFO L495 AbstractCegarLoop]: Abstraction has 3559 states and 5076 transitions. [2023-11-23 15:45:18,239 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 9 states have (on average 3.4444444444444446) internal successors, (31), 11 states have internal predecessors, (31), 4 states have call successors, (13), 2 states have call predecessors, (13), 4 states have return successors, (12), 5 states have call predecessors, (12), 3 states have call successors, (12) [2023-11-23 15:45:18,239 INFO L276 IsEmpty]: Start isEmpty. Operand 3559 states and 5076 transitions. [2023-11-23 15:45:18,239 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2023-11-23 15:45:18,239 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 15:45:18,240 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 15:45:18,256 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 (12)] Forceful destruction successful, exit code 0 [2023-11-23 15:45:18,453 WARN L477 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 [2023-11-23 15:45:18,453 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ldv_freeErr2ASSERT_VIOLATIONMEMORY_FREE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, virtblk_update_cache_modeErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, virtblk_update_cache_modeErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 473 more)] === [2023-11-23 15:45:18,454 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 15:45:18,454 INFO L85 PathProgramCache]: Analyzing trace with hash 171301097, now seen corresponding path program 1 times [2023-11-23 15:45:18,454 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-23 15:45:18,455 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1735865411] [2023-11-23 15:45:18,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 15:45:18,455 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-23 15:45:18,455 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-11-23 15:45:18,456 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) [2023-11-23 15:45:18,457 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 [2023-11-23 15:45:19,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:45:19,306 INFO L262 TraceCheckSpWp]: Trace formula consists of 699 conjuncts, 15 conjunts are in the unsatisfiable core [2023-11-23 15:45:19,309 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 15:45:19,324 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2023-11-23 15:45:20,155 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2023-11-23 15:45:20,155 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 15:45:20,155 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-23 15:45:20,156 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1735865411] [2023-11-23 15:45:20,156 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1735865411] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 15:45:20,156 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 15:45:20,156 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-11-23 15:45:20,156 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [308268614] [2023-11-23 15:45:20,156 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 15:45:20,156 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-23 15:45:20,156 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-23 15:45:20,157 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-23 15:45:20,157 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2023-11-23 15:45:20,157 INFO L87 Difference]: Start difference. First operand 3559 states and 5076 transitions. Second operand has 10 states, 8 states have (on average 4.0) internal successors, (32), 8 states have internal predecessors, (32), 3 states have call successors, (13), 3 states have call predecessors, (13), 3 states have return successors, (12), 3 states have call predecessors, (12), 2 states have call successors, (12) Killed by 15