./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/ddv-machzwd/ddv_machzwd_all.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 9bd2c7ff Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09d509a0-8559-4d6e-977b-c56d907a1907/bin/uautomizer-verify-uCwYo4JHxu/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09d509a0-8559-4d6e-977b-c56d907a1907/bin/uautomizer-verify-uCwYo4JHxu/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09d509a0-8559-4d6e-977b-c56d907a1907/bin/uautomizer-verify-uCwYo4JHxu/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09d509a0-8559-4d6e-977b-c56d907a1907/bin/uautomizer-verify-uCwYo4JHxu/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/ddv-machzwd/ddv_machzwd_all.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09d509a0-8559-4d6e-977b-c56d907a1907/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09d509a0-8559-4d6e-977b-c56d907a1907/bin/uautomizer-verify-uCwYo4JHxu --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash a564ea576763c13bfd3673da7d9fb82b1799f9ec9208539e745949eb812373cd --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 07:34:18,489 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 07:34:18,615 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09d509a0-8559-4d6e-977b-c56d907a1907/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2023-11-19 07:34:18,620 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 07:34:18,621 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 07:34:18,657 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 07:34:18,658 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 07:34:18,659 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 07:34:18,660 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 07:34:18,665 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 07:34:18,667 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-19 07:34:18,667 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-19 07:34:18,668 INFO L153 SettingsManager]: * Use SBE=true [2023-11-19 07:34:18,670 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 07:34:18,670 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-19 07:34:18,671 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 07:34:18,671 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-19 07:34:18,671 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 07:34:18,672 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-19 07:34:18,672 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-19 07:34:18,673 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-19 07:34:18,673 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 07:34:18,674 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-19 07:34:18,674 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-19 07:34:18,674 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-19 07:34:18,675 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 07:34:18,676 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 07:34:18,676 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-19 07:34:18,677 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 07:34:18,677 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:34:18,678 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 07:34:18,679 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 07:34:18,679 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-19 07:34:18,679 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 07:34:18,680 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-19 07:34:18,680 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-19 07:34:18,680 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 07:34:18,680 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-19 07:34:18,680 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09d509a0-8559-4d6e-977b-c56d907a1907/bin/uautomizer-verify-uCwYo4JHxu/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09d509a0-8559-4d6e-977b-c56d907a1907/bin/uautomizer-verify-uCwYo4JHxu Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a564ea576763c13bfd3673da7d9fb82b1799f9ec9208539e745949eb812373cd [2023-11-19 07:34:19,005 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 07:34:19,038 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 07:34:19,041 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 07:34:19,042 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 07:34:19,043 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 07:34:19,045 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09d509a0-8559-4d6e-977b-c56d907a1907/bin/uautomizer-verify-uCwYo4JHxu/../../sv-benchmarks/c/ddv-machzwd/ddv_machzwd_all.i [2023-11-19 07:34:22,034 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 07:34:22,489 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 07:34:22,490 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09d509a0-8559-4d6e-977b-c56d907a1907/sv-benchmarks/c/ddv-machzwd/ddv_machzwd_all.i [2023-11-19 07:34:22,520 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09d509a0-8559-4d6e-977b-c56d907a1907/bin/uautomizer-verify-uCwYo4JHxu/data/094df0333/e256118bf99149d2a5a6f500b40d2bba/FLAG28fd1afd9 [2023-11-19 07:34:22,535 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09d509a0-8559-4d6e-977b-c56d907a1907/bin/uautomizer-verify-uCwYo4JHxu/data/094df0333/e256118bf99149d2a5a6f500b40d2bba [2023-11-19 07:34:22,538 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 07:34:22,539 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 07:34:22,541 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 07:34:22,541 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 07:34:22,547 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 07:34:22,548 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:34:22" (1/1) ... [2023-11-19 07:34:22,549 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5eb367a0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:34:22, skipping insertion in model container [2023-11-19 07:34:22,550 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:34:22" (1/1) ... [2023-11-19 07:34:22,663 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 07:34:24,619 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:34:24,669 ERROR L324 MainTranslator]: Unsupported Syntax: Found a cast between two array/pointer types of different sizes while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) [2023-11-19 07:34:24,670 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@25fe13fc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:34:24, skipping insertion in model container [2023-11-19 07:34:24,670 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 07:34:24,671 INFO L186 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2023-11-19 07:34:24,673 INFO L158 Benchmark]: Toolchain (without parser) took 2132.67ms. Allocated memory is still 157.3MB. Free memory was 117.9MB in the beginning and 96.0MB in the end (delta: 21.9MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2023-11-19 07:34:24,674 INFO L158 Benchmark]: CDTParser took 0.24ms. Allocated memory is still 121.6MB. Free memory is still 92.2MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-19 07:34:24,675 INFO L158 Benchmark]: CACSL2BoogieTranslator took 2129.93ms. Allocated memory is still 157.3MB. Free memory was 117.9MB in the beginning and 96.0MB in the end (delta: 21.9MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2023-11-19 07:34:24,677 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24ms. Allocated memory is still 121.6MB. Free memory is still 92.2MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 2129.93ms. Allocated memory is still 157.3MB. Free memory was 117.9MB in the beginning and 96.0MB in the end (delta: 21.9MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 2992]: Unsupported Syntax Found a cast between two array/pointer types of different sizes while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09d509a0-8559-4d6e-977b-c56d907a1907/bin/uautomizer-verify-uCwYo4JHxu/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09d509a0-8559-4d6e-977b-c56d907a1907/bin/uautomizer-verify-uCwYo4JHxu/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09d509a0-8559-4d6e-977b-c56d907a1907/bin/uautomizer-verify-uCwYo4JHxu/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09d509a0-8559-4d6e-977b-c56d907a1907/bin/uautomizer-verify-uCwYo4JHxu/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/ddv-machzwd/ddv_machzwd_all.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09d509a0-8559-4d6e-977b-c56d907a1907/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09d509a0-8559-4d6e-977b-c56d907a1907/bin/uautomizer-verify-uCwYo4JHxu --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash a564ea576763c13bfd3673da7d9fb82b1799f9ec9208539e745949eb812373cd --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 07:34:27,259 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 07:34:27,346 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09d509a0-8559-4d6e-977b-c56d907a1907/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2023-11-19 07:34:27,352 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 07:34:27,353 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 07:34:27,385 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 07:34:27,389 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 07:34:27,390 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 07:34:27,391 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 07:34:27,392 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 07:34:27,394 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-19 07:34:27,394 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-19 07:34:27,395 INFO L153 SettingsManager]: * Use SBE=true [2023-11-19 07:34:27,396 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 07:34:27,397 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-19 07:34:27,397 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 07:34:27,398 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-19 07:34:27,398 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 07:34:27,399 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-19 07:34:27,399 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-19 07:34:27,400 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-19 07:34:27,401 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 07:34:27,402 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-19 07:34:27,402 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-11-19 07:34:27,403 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-11-19 07:34:27,403 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-19 07:34:27,404 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-19 07:34:27,405 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 07:34:27,405 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 07:34:27,406 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-19 07:34:27,406 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 07:34:27,407 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:34:27,407 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 07:34:27,408 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 07:34:27,408 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-11-19 07:34:27,409 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-11-19 07:34:27,410 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-19 07:34:27,410 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-19 07:34:27,410 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 07:34:27,411 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-11-19 07:34:27,411 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-19 07:34:27,412 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09d509a0-8559-4d6e-977b-c56d907a1907/bin/uautomizer-verify-uCwYo4JHxu/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09d509a0-8559-4d6e-977b-c56d907a1907/bin/uautomizer-verify-uCwYo4JHxu Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a564ea576763c13bfd3673da7d9fb82b1799f9ec9208539e745949eb812373cd [2023-11-19 07:34:27,833 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 07:34:27,866 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 07:34:27,869 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 07:34:27,870 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 07:34:27,871 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 07:34:27,872 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09d509a0-8559-4d6e-977b-c56d907a1907/bin/uautomizer-verify-uCwYo4JHxu/../../sv-benchmarks/c/ddv-machzwd/ddv_machzwd_all.i [2023-11-19 07:34:31,095 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 07:34:31,655 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 07:34:31,656 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09d509a0-8559-4d6e-977b-c56d907a1907/sv-benchmarks/c/ddv-machzwd/ddv_machzwd_all.i [2023-11-19 07:34:31,696 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09d509a0-8559-4d6e-977b-c56d907a1907/bin/uautomizer-verify-uCwYo4JHxu/data/afaeb083b/fe3b3efad7794850a1343de2c9ff37d6/FLAG771885c7f [2023-11-19 07:34:31,715 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09d509a0-8559-4d6e-977b-c56d907a1907/bin/uautomizer-verify-uCwYo4JHxu/data/afaeb083b/fe3b3efad7794850a1343de2c9ff37d6 [2023-11-19 07:34:31,722 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 07:34:31,724 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 07:34:31,729 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 07:34:31,729 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 07:34:31,734 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 07:34:31,735 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:34:31" (1/1) ... [2023-11-19 07:34:31,739 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@64b0ac42 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:34:31, skipping insertion in model container [2023-11-19 07:34:31,739 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:34:31" (1/1) ... [2023-11-19 07:34:31,852 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 07:34:33,532 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:34:33,585 INFO L199 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2023-11-19 07:34:33,616 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 07:34:33,834 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:34:33,866 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 07:34:34,071 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:34:34,284 WARN L675 CHandler]: The function __VERIFIER_nondet_sector_t is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 07:34:34,293 INFO L206 MainTranslator]: Completed translation [2023-11-19 07:34:34,293 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:34:34 WrapperNode [2023-11-19 07:34:34,293 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 07:34:34,294 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 07:34:34,295 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 07:34:34,295 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 07:34:34,303 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:34:34" (1/1) ... [2023-11-19 07:34:34,384 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:34:34" (1/1) ... [2023-11-19 07:34:34,503 INFO L138 Inliner]: procedures = 484, calls = 867, calls flagged for inlining = 56, calls inlined = 38, statements flattened = 1007 [2023-11-19 07:34:34,503 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 07:34:34,504 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 07:34:34,504 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 07:34:34,504 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 07:34:34,523 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:34:34" (1/1) ... [2023-11-19 07:34:34,523 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:34:34" (1/1) ... [2023-11-19 07:34:34,549 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:34:34" (1/1) ... [2023-11-19 07:34:34,550 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:34:34" (1/1) ... [2023-11-19 07:34:34,619 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:34:34" (1/1) ... [2023-11-19 07:34:34,627 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:34:34" (1/1) ... [2023-11-19 07:34:34,637 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:34:34" (1/1) ... [2023-11-19 07:34:34,657 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:34:34" (1/1) ... [2023-11-19 07:34:34,669 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 07:34:34,670 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 07:34:34,670 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 07:34:34,670 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 07:34:34,671 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:34:34" (1/1) ... [2023-11-19 07:34:34,677 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:34:34,691 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09d509a0-8559-4d6e-977b-c56d907a1907/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:34:34,703 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09d509a0-8559-4d6e-977b-c56d907a1907/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 07:34:34,763 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09d509a0-8559-4d6e-977b-c56d907a1907/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 07:34:34,790 INFO L130 BoogieDeclarations]: Found specification of procedure zf_timer_off [2023-11-19 07:34:34,790 INFO L138 BoogieDeclarations]: Found implementation of procedure zf_timer_off [2023-11-19 07:34:34,790 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~X~C_UINT~X~C_ULONG~TO~C_INT [2023-11-19 07:34:34,790 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~X~C_UINT~X~C_ULONG~TO~C_INT [2023-11-19 07:34:34,791 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-19 07:34:34,791 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_atomic_begin [2023-11-19 07:34:34,791 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2023-11-19 07:34:34,791 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2023-11-19 07:34:34,791 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-19 07:34:34,791 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE2 [2023-11-19 07:34:34,792 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2023-11-19 07:34:34,792 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2023-11-19 07:34:34,792 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock [2023-11-19 07:34:34,792 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock [2023-11-19 07:34:34,792 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-19 07:34:34,792 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_atomic_end [2023-11-19 07:34:34,793 INFO L130 BoogieDeclarations]: Found specification of procedure zf_get_control [2023-11-19 07:34:34,793 INFO L138 BoogieDeclarations]: Found implementation of procedure zf_get_control [2023-11-19 07:34:34,793 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-11-19 07:34:34,793 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-11-19 07:34:34,793 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~C_INT [2023-11-19 07:34:34,793 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~C_INT [2023-11-19 07:34:34,794 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-19 07:34:34,794 INFO L130 BoogieDeclarations]: Found specification of procedure request_region [2023-11-19 07:34:34,794 INFO L138 BoogieDeclarations]: Found implementation of procedure request_region [2023-11-19 07:34:34,794 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 07:34:34,794 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-19 07:34:34,794 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2023-11-19 07:34:34,794 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2023-11-19 07:34:34,795 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock_irqsave [2023-11-19 07:34:34,795 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock_irqsave [2023-11-19 07:34:34,795 INFO L130 BoogieDeclarations]: Found specification of procedure release_region [2023-11-19 07:34:34,795 INFO L138 BoogieDeclarations]: Found implementation of procedure release_region [2023-11-19 07:34:34,795 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 07:34:34,795 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 07:34:34,796 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock_init [2023-11-19 07:34:34,796 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock_init [2023-11-19 07:34:34,796 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE8 [2023-11-19 07:34:34,796 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2023-11-19 07:34:34,796 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2 [2023-11-19 07:34:34,796 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2023-11-19 07:34:34,796 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-19 07:34:34,797 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-19 07:34:34,797 INFO L130 BoogieDeclarations]: Found specification of procedure del_timer [2023-11-19 07:34:34,797 INFO L138 BoogieDeclarations]: Found implementation of procedure del_timer [2023-11-19 07:34:34,797 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-19 07:34:34,797 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-19 07:34:34,797 INFO L130 BoogieDeclarations]: Found specification of procedure add_timer [2023-11-19 07:34:34,797 INFO L138 BoogieDeclarations]: Found implementation of procedure add_timer [2023-11-19 07:34:34,798 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE8 [2023-11-19 07:34:34,798 INFO L130 BoogieDeclarations]: Found specification of procedure cdev_add [2023-11-19 07:34:34,798 INFO L138 BoogieDeclarations]: Found implementation of procedure cdev_add [2023-11-19 07:34:34,798 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2023-11-19 07:34:34,798 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2 [2023-11-19 07:34:34,798 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2023-11-19 07:34:34,798 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-11-19 07:34:34,799 INFO L130 BoogieDeclarations]: Found specification of procedure printk [2023-11-19 07:34:34,799 INFO L138 BoogieDeclarations]: Found implementation of procedure printk [2023-11-19 07:34:34,799 INFO L130 BoogieDeclarations]: Found specification of procedure outw [2023-11-19 07:34:34,799 INFO L138 BoogieDeclarations]: Found implementation of procedure outw [2023-11-19 07:34:34,799 INFO L130 BoogieDeclarations]: Found specification of procedure outb [2023-11-19 07:34:34,799 INFO L138 BoogieDeclarations]: Found implementation of procedure outb [2023-11-19 07:34:34,800 INFO L130 BoogieDeclarations]: Found specification of procedure misc_deregister [2023-11-19 07:34:34,800 INFO L138 BoogieDeclarations]: Found implementation of procedure misc_deregister [2023-11-19 07:34:34,800 INFO L130 BoogieDeclarations]: Found specification of procedure assert_context_process [2023-11-19 07:34:34,800 INFO L138 BoogieDeclarations]: Found implementation of procedure assert_context_process [2023-11-19 07:34:34,800 INFO L130 BoogieDeclarations]: Found specification of procedure zf_set_control [2023-11-19 07:34:34,800 INFO L138 BoogieDeclarations]: Found implementation of procedure zf_set_control [2023-11-19 07:34:34,800 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~X~C_ULONG~X~$Pointer$~TO~C_LONG [2023-11-19 07:34:34,801 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~X~C_ULONG~X~$Pointer$~TO~C_LONG [2023-11-19 07:34:34,801 INFO L130 BoogieDeclarations]: Found specification of procedure zf_readw [2023-11-19 07:34:34,801 INFO L138 BoogieDeclarations]: Found implementation of procedure zf_readw [2023-11-19 07:34:34,801 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE4 [2023-11-19 07:34:34,801 INFO L130 BoogieDeclarations]: Found specification of procedure zf_ping [2023-11-19 07:34:34,801 INFO L138 BoogieDeclarations]: Found implementation of procedure zf_ping [2023-11-19 07:34:34,801 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock [2023-11-19 07:34:34,801 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock [2023-11-19 07:34:34,802 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~C_ULONG~TO~VOID [2023-11-19 07:34:34,802 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~C_ULONG~TO~VOID [2023-11-19 07:34:35,228 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 07:34:35,232 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 07:34:41,336 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 07:34:41,372 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 07:34:41,373 INFO L302 CfgBuilder]: Removed 4 assume(true) statements. [2023-11-19 07:34:41,381 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:34:41 BoogieIcfgContainer [2023-11-19 07:34:41,381 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 07:34:41,384 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 07:34:41,384 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 07:34:41,387 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 07:34:41,388 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 07:34:31" (1/3) ... [2023-11-19 07:34:41,389 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3c1bf711 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:34:41, skipping insertion in model container [2023-11-19 07:34:41,389 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:34:34" (2/3) ... [2023-11-19 07:34:41,389 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3c1bf711 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:34:41, skipping insertion in model container [2023-11-19 07:34:41,389 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:34:41" (3/3) ... [2023-11-19 07:34:41,391 INFO L112 eAbstractionObserver]: Analyzing ICFG ddv_machzwd_all.i [2023-11-19 07:34:41,410 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 07:34:41,411 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 206 error locations. [2023-11-19 07:34:41,481 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 07:34:41,486 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;@6a19fcf3, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-19 07:34:41,487 INFO L358 AbstractCegarLoop]: Starting to check reachability of 206 error locations. [2023-11-19 07:34:41,493 INFO L276 IsEmpty]: Start isEmpty. Operand has 677 states, 362 states have (on average 1.8093922651933703) internal successors, (655), 574 states have internal predecessors, (655), 81 states have call successors, (81), 27 states have call predecessors, (81), 27 states have return successors, (81), 81 states have call predecessors, (81), 81 states have call successors, (81) [2023-11-19 07:34:41,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2023-11-19 07:34:41,502 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:34:41,502 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2023-11-19 07:34:41,524 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting spin_lock_initErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [spin_lock_initErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, spin_lock_initErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, spin_lock_initErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 203 more)] === [2023-11-19 07:34:41,540 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:34:41,540 INFO L85 PathProgramCache]: Analyzing trace with hash 389229988, now seen corresponding path program 1 times [2023-11-19 07:34:41,570 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-19 07:34:41,571 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [242344110] [2023-11-19 07:34:41,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:34:41,571 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-19 07:34:41,571 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09d509a0-8559-4d6e-977b-c56d907a1907/bin/uautomizer-verify-uCwYo4JHxu/mathsat [2023-11-19 07:34:41,573 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09d509a0-8559-4d6e-977b-c56d907a1907/bin/uautomizer-verify-uCwYo4JHxu/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-19 07:34:41,576 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09d509a0-8559-4d6e-977b-c56d907a1907/bin/uautomizer-verify-uCwYo4JHxu/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2023-11-19 07:34:42,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:34:42,218 INFO L262 TraceCheckSpWp]: Trace formula consists of 433 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-19 07:34:42,222 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:34:42,389 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:34:42,389 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:34:42,390 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-19 07:34:42,394 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [242344110] [2023-11-19 07:34:42,396 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [242344110] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:34:42,396 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:34:42,396 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 07:34:42,398 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1288047622] [2023-11-19 07:34:42,399 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:34:42,403 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-19 07:34:42,404 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-19 07:34:42,436 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-19 07:34:42,437 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-19 07:34:42,441 INFO L87 Difference]: Start difference. First operand has 677 states, 362 states have (on average 1.8093922651933703) internal successors, (655), 574 states have internal predecessors, (655), 81 states have call successors, (81), 27 states have call predecessors, (81), 27 states have return successors, (81), 81 states have call predecessors, (81), 81 states have call successors, (81) Second operand has 5 states, 4 states have (on average 1.0) internal successors, (4), 3 states have internal predecessors, (4), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:34:44,481 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-19 07:34:46,486 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-19 07:34:50,557 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:34:50,557 INFO L93 Difference]: Finished difference Result 1224 states and 1465 transitions. [2023-11-19 07:34:50,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-19 07:34:50,559 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 1.0) internal successors, (4), 3 states have internal predecessors, (4), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2023-11-19 07:34:50,560 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:34:50,583 INFO L225 Difference]: With dead ends: 1224 [2023-11-19 07:34:50,584 INFO L226 Difference]: Without dead ends: 1220 [2023-11-19 07:34:50,585 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-11-19 07:34:50,588 INFO L413 NwaCegarLoop]: 705 mSDtfsCounter, 698 mSDsluCounter, 1614 mSDsCounter, 0 mSdLazyCounter, 1135 mSolverCounterSat, 4 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 699 SdHoareTripleChecker+Valid, 2319 SdHoareTripleChecker+Invalid, 1141 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 1135 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.9s IncrementalHoareTripleChecker+Time [2023-11-19 07:34:50,589 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [699 Valid, 2319 Invalid, 1141 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 1135 Invalid, 2 Unknown, 0 Unchecked, 7.9s Time] [2023-11-19 07:34:50,614 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1220 states. [2023-11-19 07:34:50,720 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1220 to 1004. [2023-11-19 07:34:50,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1004 states, 602 states have (on average 1.7923588039867109) internal successors, (1079), 825 states have internal predecessors, (1079), 144 states have call successors, (144), 52 states have call predecessors, (144), 52 states have return successors, (144), 137 states have call predecessors, (144), 144 states have call successors, (144) [2023-11-19 07:34:50,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1004 states to 1004 states and 1367 transitions. [2023-11-19 07:34:50,737 INFO L78 Accepts]: Start accepts. Automaton has 1004 states and 1367 transitions. Word has length 5 [2023-11-19 07:34:50,737 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:34:50,738 INFO L495 AbstractCegarLoop]: Abstraction has 1004 states and 1367 transitions. [2023-11-19 07:34:50,738 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 1.0) internal successors, (4), 3 states have internal predecessors, (4), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:34:50,738 INFO L276 IsEmpty]: Start isEmpty. Operand 1004 states and 1367 transitions. [2023-11-19 07:34:50,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2023-11-19 07:34:50,739 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:34:50,739 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2023-11-19 07:34:50,752 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09d509a0-8559-4d6e-977b-c56d907a1907/bin/uautomizer-verify-uCwYo4JHxu/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2023-11-19 07:34:50,945 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09d509a0-8559-4d6e-977b-c56d907a1907/bin/uautomizer-verify-uCwYo4JHxu/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-19 07:34:50,945 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting spin_lock_initErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [spin_lock_initErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, spin_lock_initErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, spin_lock_initErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 203 more)] === [2023-11-19 07:34:50,946 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:34:50,946 INFO L85 PathProgramCache]: Analyzing trace with hash 389229989, now seen corresponding path program 1 times [2023-11-19 07:34:50,947 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-19 07:34:50,947 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1862460754] [2023-11-19 07:34:50,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:34:50,948 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-19 07:34:50,948 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09d509a0-8559-4d6e-977b-c56d907a1907/bin/uautomizer-verify-uCwYo4JHxu/mathsat [2023-11-19 07:34:50,949 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09d509a0-8559-4d6e-977b-c56d907a1907/bin/uautomizer-verify-uCwYo4JHxu/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-19 07:34:50,953 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09d509a0-8559-4d6e-977b-c56d907a1907/bin/uautomizer-verify-uCwYo4JHxu/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2023-11-19 07:34:51,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:34:51,491 INFO L262 TraceCheckSpWp]: Trace formula consists of 433 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-19 07:34:51,493 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:34:51,644 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:34:51,644 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:34:51,645 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-19 07:34:51,645 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1862460754] [2023-11-19 07:34:51,645 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1862460754] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:34:51,645 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:34:51,645 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 07:34:51,645 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2067642201] [2023-11-19 07:34:51,646 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:34:51,647 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-19 07:34:51,647 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-19 07:34:51,648 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-19 07:34:51,648 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-19 07:34:51,648 INFO L87 Difference]: Start difference. First operand 1004 states and 1367 transitions. Second operand has 5 states, 4 states have (on average 1.0) internal successors, (4), 3 states have internal predecessors, (4), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:34:53,680 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-19 07:34:55,684 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-19 07:34:59,329 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:34:59,329 INFO L93 Difference]: Finished difference Result 1147 states and 1472 transitions. [2023-11-19 07:34:59,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-19 07:34:59,330 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 1.0) internal successors, (4), 3 states have internal predecessors, (4), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2023-11-19 07:34:59,330 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:34:59,341 INFO L225 Difference]: With dead ends: 1147 [2023-11-19 07:34:59,341 INFO L226 Difference]: Without dead ends: 1147 [2023-11-19 07:34:59,342 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-11-19 07:34:59,343 INFO L413 NwaCegarLoop]: 825 mSDtfsCounter, 281 mSDsluCounter, 1773 mSDsCounter, 0 mSdLazyCounter, 869 mSolverCounterSat, 1 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 282 SdHoareTripleChecker+Valid, 2598 SdHoareTripleChecker+Invalid, 872 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 869 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.5s IncrementalHoareTripleChecker+Time [2023-11-19 07:34:59,343 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [282 Valid, 2598 Invalid, 872 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 869 Invalid, 2 Unknown, 0 Unchecked, 7.5s Time] [2023-11-19 07:34:59,346 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1147 states. [2023-11-19 07:34:59,390 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1147 to 1085. [2023-11-19 07:34:59,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1085 states, 647 states have (on average 1.7527047913446676) internal successors, (1134), 871 states have internal predecessors, (1134), 166 states have call successors, (166), 66 states have call predecessors, (166), 66 states have return successors, (166), 159 states have call predecessors, (166), 166 states have call successors, (166) [2023-11-19 07:34:59,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1085 states to 1085 states and 1466 transitions. [2023-11-19 07:34:59,441 INFO L78 Accepts]: Start accepts. Automaton has 1085 states and 1466 transitions. Word has length 5 [2023-11-19 07:34:59,441 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:34:59,441 INFO L495 AbstractCegarLoop]: Abstraction has 1085 states and 1466 transitions. [2023-11-19 07:34:59,442 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 1.0) internal successors, (4), 3 states have internal predecessors, (4), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:34:59,443 INFO L276 IsEmpty]: Start isEmpty. Operand 1085 states and 1466 transitions. [2023-11-19 07:34:59,444 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2023-11-19 07:34:59,444 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:34:59,444 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:34:59,451 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09d509a0-8559-4d6e-977b-c56d907a1907/bin/uautomizer-verify-uCwYo4JHxu/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Ended with exit code 0 [2023-11-19 07:34:59,650 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09d509a0-8559-4d6e-977b-c56d907a1907/bin/uautomizer-verify-uCwYo4JHxu/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-19 07:34:59,651 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [spin_lock_initErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, spin_lock_initErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, spin_lock_initErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 203 more)] === [2023-11-19 07:34:59,651 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:34:59,652 INFO L85 PathProgramCache]: Analyzing trace with hash -716314913, now seen corresponding path program 1 times [2023-11-19 07:34:59,652 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-19 07:34:59,652 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1875621293] [2023-11-19 07:34:59,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:34:59,653 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-19 07:34:59,653 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09d509a0-8559-4d6e-977b-c56d907a1907/bin/uautomizer-verify-uCwYo4JHxu/mathsat [2023-11-19 07:34:59,654 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09d509a0-8559-4d6e-977b-c56d907a1907/bin/uautomizer-verify-uCwYo4JHxu/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-19 07:34:59,656 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09d509a0-8559-4d6e-977b-c56d907a1907/bin/uautomizer-verify-uCwYo4JHxu/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2023-11-19 07:35:00,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:35:00,220 INFO L262 TraceCheckSpWp]: Trace formula consists of 481 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-19 07:35:00,222 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:35:00,338 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:35:00,339 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:35:00,339 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-19 07:35:00,339 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1875621293] [2023-11-19 07:35:00,340 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1875621293] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:35:00,340 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:35:00,340 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-19 07:35:00,340 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [997379612] [2023-11-19 07:35:00,340 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:35:00,341 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:35:00,341 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-19 07:35:00,342 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:35:00,343 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:35:00,343 INFO L87 Difference]: Start difference. First operand 1085 states and 1466 transitions. Second operand has 3 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-19 07:35:02,289 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:35:02,290 INFO L93 Difference]: Finished difference Result 1294 states and 1555 transitions. [2023-11-19 07:35:02,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:35:02,291 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 11 [2023-11-19 07:35:02,291 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:35:02,302 INFO L225 Difference]: With dead ends: 1294 [2023-11-19 07:35:02,302 INFO L226 Difference]: Without dead ends: 1294 [2023-11-19 07:35:02,302 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:35:02,307 INFO L413 NwaCegarLoop]: 683 mSDtfsCounter, 671 mSDsluCounter, 557 mSDsCounter, 0 mSdLazyCounter, 396 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 671 SdHoareTripleChecker+Valid, 1240 SdHoareTripleChecker+Invalid, 403 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 396 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2023-11-19 07:35:02,309 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [671 Valid, 1240 Invalid, 403 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 396 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2023-11-19 07:35:02,314 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1294 states. [2023-11-19 07:35:02,367 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1294 to 1084. [2023-11-19 07:35:02,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1084 states, 647 states have (on average 1.7449768160741885) internal successors, (1129), 870 states have internal predecessors, (1129), 166 states have call successors, (166), 66 states have call predecessors, (166), 66 states have return successors, (166), 159 states have call predecessors, (166), 166 states have call successors, (166) [2023-11-19 07:35:02,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1084 states to 1084 states and 1461 transitions. [2023-11-19 07:35:02,384 INFO L78 Accepts]: Start accepts. Automaton has 1084 states and 1461 transitions. Word has length 11 [2023-11-19 07:35:02,384 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:35:02,385 INFO L495 AbstractCegarLoop]: Abstraction has 1084 states and 1461 transitions. [2023-11-19 07:35:02,385 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-19 07:35:02,385 INFO L276 IsEmpty]: Start isEmpty. Operand 1084 states and 1461 transitions. [2023-11-19 07:35:02,386 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2023-11-19 07:35:02,386 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:35:02,386 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:35:02,399 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09d509a0-8559-4d6e-977b-c56d907a1907/bin/uautomizer-verify-uCwYo4JHxu/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2023-11-19 07:35:02,593 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09d509a0-8559-4d6e-977b-c56d907a1907/bin/uautomizer-verify-uCwYo4JHxu/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-19 07:35:02,593 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [spin_lock_initErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, spin_lock_initErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, spin_lock_initErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 203 more)] === [2023-11-19 07:35:02,594 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:35:02,594 INFO L85 PathProgramCache]: Analyzing trace with hash -716314912, now seen corresponding path program 1 times [2023-11-19 07:35:02,595 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-19 07:35:02,595 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [943418861] [2023-11-19 07:35:02,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:35:02,595 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-19 07:35:02,596 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09d509a0-8559-4d6e-977b-c56d907a1907/bin/uautomizer-verify-uCwYo4JHxu/mathsat [2023-11-19 07:35:02,598 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09d509a0-8559-4d6e-977b-c56d907a1907/bin/uautomizer-verify-uCwYo4JHxu/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-19 07:35:02,602 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09d509a0-8559-4d6e-977b-c56d907a1907/bin/uautomizer-verify-uCwYo4JHxu/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2023-11-19 07:35:03,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:35:03,172 INFO L262 TraceCheckSpWp]: Trace formula consists of 481 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-19 07:35:03,174 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:35:03,408 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:35:03,408 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:35:03,408 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-19 07:35:03,408 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [943418861] [2023-11-19 07:35:03,408 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [943418861] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:35:03,409 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:35:03,409 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 07:35:03,409 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [475823280] [2023-11-19 07:35:03,409 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:35:03,409 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 07:35:03,410 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-19 07:35:03,410 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 07:35:03,410 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-19 07:35:03,411 INFO L87 Difference]: Start difference. First operand 1084 states and 1461 transitions. Second operand has 4 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-19 07:35:05,446 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-19 07:35:08,180 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:35:08,181 INFO L93 Difference]: Finished difference Result 1153 states and 1478 transitions. [2023-11-19 07:35:08,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 07:35:08,182 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 11 [2023-11-19 07:35:08,182 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:35:08,190 INFO L225 Difference]: With dead ends: 1153 [2023-11-19 07:35:08,190 INFO L226 Difference]: Without dead ends: 1153 [2023-11-19 07:35:08,191 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-19 07:35:08,191 INFO L413 NwaCegarLoop]: 822 mSDtfsCounter, 272 mSDsluCounter, 1155 mSDsCounter, 0 mSdLazyCounter, 589 mSolverCounterSat, 3 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 272 SdHoareTripleChecker+Valid, 1977 SdHoareTripleChecker+Invalid, 593 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 589 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.7s IncrementalHoareTripleChecker+Time [2023-11-19 07:35:08,192 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [272 Valid, 1977 Invalid, 593 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 589 Invalid, 1 Unknown, 0 Unchecked, 4.7s Time] [2023-11-19 07:35:08,195 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1153 states. [2023-11-19 07:35:08,241 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1153 to 1087. [2023-11-19 07:35:08,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1087 states, 650 states have (on average 1.7415384615384615) internal successors, (1132), 873 states have internal predecessors, (1132), 166 states have call successors, (166), 66 states have call predecessors, (166), 66 states have return successors, (166), 159 states have call predecessors, (166), 166 states have call successors, (166) [2023-11-19 07:35:08,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1087 states to 1087 states and 1464 transitions. [2023-11-19 07:35:08,251 INFO L78 Accepts]: Start accepts. Automaton has 1087 states and 1464 transitions. Word has length 11 [2023-11-19 07:35:08,252 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:35:08,252 INFO L495 AbstractCegarLoop]: Abstraction has 1087 states and 1464 transitions. [2023-11-19 07:35:08,252 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-19 07:35:08,252 INFO L276 IsEmpty]: Start isEmpty. Operand 1087 states and 1464 transitions. [2023-11-19 07:35:08,253 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2023-11-19 07:35:08,253 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:35:08,253 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:35:08,264 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09d509a0-8559-4d6e-977b-c56d907a1907/bin/uautomizer-verify-uCwYo4JHxu/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2023-11-19 07:35:08,460 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09d509a0-8559-4d6e-977b-c56d907a1907/bin/uautomizer-verify-uCwYo4JHxu/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-19 07:35:08,460 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [spin_lock_initErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, spin_lock_initErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, spin_lock_initErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 203 more)] === [2023-11-19 07:35:08,461 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:35:08,461 INFO L85 PathProgramCache]: Analyzing trace with hash 1955281935, now seen corresponding path program 1 times [2023-11-19 07:35:08,461 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-19 07:35:08,462 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1636663007] [2023-11-19 07:35:08,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:35:08,462 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-19 07:35:08,462 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09d509a0-8559-4d6e-977b-c56d907a1907/bin/uautomizer-verify-uCwYo4JHxu/mathsat [2023-11-19 07:35:08,463 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09d509a0-8559-4d6e-977b-c56d907a1907/bin/uautomizer-verify-uCwYo4JHxu/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-19 07:35:08,464 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09d509a0-8559-4d6e-977b-c56d907a1907/bin/uautomizer-verify-uCwYo4JHxu/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2023-11-19 07:35:09,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:35:09,046 INFO L262 TraceCheckSpWp]: Trace formula consists of 496 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-19 07:35:09,048 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:35:09,370 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:35:09,370 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:35:09,695 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:35:09,695 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-19 07:35:09,696 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1636663007] [2023-11-19 07:35:09,696 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1636663007] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 07:35:09,696 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-19 07:35:09,697 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 4] total 7 [2023-11-19 07:35:09,697 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2007717373] [2023-11-19 07:35:09,697 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-19 07:35:09,698 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-19 07:35:09,698 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-19 07:35:09,698 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-19 07:35:09,699 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-11-19 07:35:09,699 INFO L87 Difference]: Start difference. First operand 1087 states and 1464 transitions. Second operand has 8 states, 7 states have (on average 3.4285714285714284) internal successors, (24), 8 states have internal predecessors, (24), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-19 07:35:11,741 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers []