./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/ldv-memsafety/memleaks_test23_1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ff601a-eb58-42e5-bfe3-252a6f671c11/bin/uautomizer-verify-NlZe1sFDwI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ff601a-eb58-42e5-bfe3-252a6f671c11/bin/uautomizer-verify-NlZe1sFDwI/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ff601a-eb58-42e5-bfe3-252a6f671c11/bin/uautomizer-verify-NlZe1sFDwI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ff601a-eb58-42e5-bfe3-252a6f671c11/bin/uautomizer-verify-NlZe1sFDwI/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/ldv-memsafety/memleaks_test23_1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ff601a-eb58-42e5-bfe3-252a6f671c11/bin/uautomizer-verify-NlZe1sFDwI/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ff601a-eb58-42e5-bfe3-252a6f671c11/bin/uautomizer-verify-NlZe1sFDwI --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 03499c01c9320e6c56c78c984f54a0b0b3f62caee089ccaa631f137e86019454 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-24 21:53:44,823 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-24 21:53:44,944 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ff601a-eb58-42e5-bfe3-252a6f671c11/bin/uautomizer-verify-NlZe1sFDwI/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2023-11-24 21:53:44,954 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-24 21:53:44,955 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-24 21:53:44,996 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-24 21:53:44,997 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-24 21:53:44,998 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-24 21:53:44,999 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-24 21:53:45,006 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-24 21:53:45,007 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-24 21:53:45,007 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-24 21:53:45,008 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-24 21:53:45,010 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-24 21:53:45,011 INFO L153 SettingsManager]: * Use SBE=true [2023-11-24 21:53:45,011 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-24 21:53:45,012 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-24 21:53:45,012 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-24 21:53:45,013 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-24 21:53:45,013 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-24 21:53:45,014 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-24 21:53:45,014 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-24 21:53:45,016 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-24 21:53:45,017 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-24 21:53:45,017 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-24 21:53:45,018 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-24 21:53:45,018 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-24 21:53:45,019 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-24 21:53:45,020 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-24 21:53:45,020 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-24 21:53:45,022 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-24 21:53:45,022 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-24 21:53:45,022 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-24 21:53:45,023 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-24 21:53:45,023 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-24 21:53:45,024 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-24 21:53:45,024 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-24 21:53:45,024 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-24 21:53:45,024 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-24 21:53:45,025 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-24 21:53:45,025 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-24 21:53:45,025 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_b5ff601a-eb58-42e5-bfe3-252a6f671c11/bin/uautomizer-verify-NlZe1sFDwI/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ff601a-eb58-42e5-bfe3-252a6f671c11/bin/uautomizer-verify-NlZe1sFDwI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 03499c01c9320e6c56c78c984f54a0b0b3f62caee089ccaa631f137e86019454 [2023-11-24 21:53:45,390 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-24 21:53:45,423 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-24 21:53:45,425 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-24 21:53:45,427 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-24 21:53:45,430 INFO L274 PluginConnector]: CDTParser initialized [2023-11-24 21:53:45,431 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ff601a-eb58-42e5-bfe3-252a6f671c11/bin/uautomizer-verify-NlZe1sFDwI/../../sv-benchmarks/c/ldv-memsafety/memleaks_test23_1.i [2023-11-24 21:53:48,606 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-24 21:53:48,957 INFO L384 CDTParser]: Found 1 translation units. [2023-11-24 21:53:48,957 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ff601a-eb58-42e5-bfe3-252a6f671c11/sv-benchmarks/c/ldv-memsafety/memleaks_test23_1.i [2023-11-24 21:53:48,993 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ff601a-eb58-42e5-bfe3-252a6f671c11/bin/uautomizer-verify-NlZe1sFDwI/data/132b47d80/e372139b9521435f810c42fe165cafb0/FLAG4b9b32906 [2023-11-24 21:53:49,011 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ff601a-eb58-42e5-bfe3-252a6f671c11/bin/uautomizer-verify-NlZe1sFDwI/data/132b47d80/e372139b9521435f810c42fe165cafb0 [2023-11-24 21:53:49,014 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-24 21:53:49,015 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-24 21:53:49,017 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-24 21:53:49,017 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-24 21:53:49,023 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-24 21:53:49,024 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 09:53:49" (1/1) ... [2023-11-24 21:53:49,026 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@54bf4194 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:53:49, skipping insertion in model container [2023-11-24 21:53:49,026 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 09:53:49" (1/1) ... [2023-11-24 21:53:49,077 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-24 21:53:49,661 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-24 21:53:49,692 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) [2023-11-24 21:53:49,692 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@742ec3ea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:53:49, skipping insertion in model container [2023-11-24 21:53:49,693 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-24 21:53:49,693 INFO L186 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2023-11-24 21:53:49,695 INFO L158 Benchmark]: Toolchain (without parser) took 679.33ms. Allocated memory is still 155.2MB. Free memory was 106.6MB in the beginning and 91.3MB in the end (delta: 15.3MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2023-11-24 21:53:49,696 INFO L158 Benchmark]: CDTParser took 0.30ms. Allocated memory is still 155.2MB. Free memory is still 127.1MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-24 21:53:49,697 INFO L158 Benchmark]: CACSL2BoogieTranslator took 676.41ms. Allocated memory is still 155.2MB. Free memory was 106.6MB in the beginning and 91.3MB in the end (delta: 15.3MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2023-11-24 21:53:49,699 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30ms. Allocated memory is still 155.2MB. Free memory is still 127.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 676.41ms. Allocated memory is still 155.2MB. Free memory was 106.6MB in the beginning and 91.3MB in the end (delta: 15.3MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 576]: Unsupported Syntax Found a cast between two array/pointer types of different sizes while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ff601a-eb58-42e5-bfe3-252a6f671c11/bin/uautomizer-verify-NlZe1sFDwI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ff601a-eb58-42e5-bfe3-252a6f671c11/bin/uautomizer-verify-NlZe1sFDwI/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ff601a-eb58-42e5-bfe3-252a6f671c11/bin/uautomizer-verify-NlZe1sFDwI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ff601a-eb58-42e5-bfe3-252a6f671c11/bin/uautomizer-verify-NlZe1sFDwI/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/ldv-memsafety/memleaks_test23_1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ff601a-eb58-42e5-bfe3-252a6f671c11/bin/uautomizer-verify-NlZe1sFDwI/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ff601a-eb58-42e5-bfe3-252a6f671c11/bin/uautomizer-verify-NlZe1sFDwI --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 03499c01c9320e6c56c78c984f54a0b0b3f62caee089ccaa631f137e86019454 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-24 21:53:52,222 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-24 21:53:52,363 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ff601a-eb58-42e5-bfe3-252a6f671c11/bin/uautomizer-verify-NlZe1sFDwI/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2023-11-24 21:53:52,372 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-24 21:53:52,375 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-24 21:53:52,422 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-24 21:53:52,423 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-24 21:53:52,423 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-24 21:53:52,424 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-24 21:53:52,430 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-24 21:53:52,430 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-24 21:53:52,431 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-24 21:53:52,431 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-24 21:53:52,433 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-24 21:53:52,434 INFO L153 SettingsManager]: * Use SBE=true [2023-11-24 21:53:52,434 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-24 21:53:52,435 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-24 21:53:52,435 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-24 21:53:52,436 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-24 21:53:52,436 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-24 21:53:52,437 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-24 21:53:52,437 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-24 21:53:52,438 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-24 21:53:52,438 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-24 21:53:52,438 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-24 21:53:52,439 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-11-24 21:53:52,439 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-11-24 21:53:52,440 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-24 21:53:52,440 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-24 21:53:52,441 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-24 21:53:52,443 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-24 21:53:52,443 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-24 21:53:52,443 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-24 21:53:52,443 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-24 21:53:52,444 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-24 21:53:52,444 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-24 21:53:52,445 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-24 21:53:52,445 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-11-24 21:53:52,446 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-11-24 21:53:52,446 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-24 21:53:52,446 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-24 21:53:52,447 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-24 21:53:52,447 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-24 21:53:52,447 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-11-24 21:53:52,448 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_b5ff601a-eb58-42e5-bfe3-252a6f671c11/bin/uautomizer-verify-NlZe1sFDwI/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ff601a-eb58-42e5-bfe3-252a6f671c11/bin/uautomizer-verify-NlZe1sFDwI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 03499c01c9320e6c56c78c984f54a0b0b3f62caee089ccaa631f137e86019454 [2023-11-24 21:53:52,898 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-24 21:53:52,925 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-24 21:53:52,928 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-24 21:53:52,929 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-24 21:53:52,930 INFO L274 PluginConnector]: CDTParser initialized [2023-11-24 21:53:52,931 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ff601a-eb58-42e5-bfe3-252a6f671c11/bin/uautomizer-verify-NlZe1sFDwI/../../sv-benchmarks/c/ldv-memsafety/memleaks_test23_1.i [2023-11-24 21:53:56,073 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-24 21:53:56,478 INFO L384 CDTParser]: Found 1 translation units. [2023-11-24 21:53:56,478 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ff601a-eb58-42e5-bfe3-252a6f671c11/sv-benchmarks/c/ldv-memsafety/memleaks_test23_1.i [2023-11-24 21:53:56,504 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ff601a-eb58-42e5-bfe3-252a6f671c11/bin/uautomizer-verify-NlZe1sFDwI/data/812febe0d/deb4ba594e8c4825a3f0bd8a30ce70ae/FLAG4edd715bf [2023-11-24 21:53:56,518 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ff601a-eb58-42e5-bfe3-252a6f671c11/bin/uautomizer-verify-NlZe1sFDwI/data/812febe0d/deb4ba594e8c4825a3f0bd8a30ce70ae [2023-11-24 21:53:56,521 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-24 21:53:56,522 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-24 21:53:56,524 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-24 21:53:56,524 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-24 21:53:56,535 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-24 21:53:56,536 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 09:53:56" (1/1) ... [2023-11-24 21:53:56,537 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6b29425f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:53:56, skipping insertion in model container [2023-11-24 21:53:56,537 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 09:53:56" (1/1) ... [2023-11-24 21:53:56,598 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-24 21:53:57,067 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-24 21:53:57,090 INFO L199 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2023-11-24 21:53:57,104 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-24 21:53:57,173 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-24 21:53:57,191 INFO L202 MainTranslator]: Completed pre-run [2023-11-24 21:53:57,306 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-24 21:53:57,370 WARN L675 CHandler]: The function release is called, but not defined or handled by StandardFunctionHandler. [2023-11-24 21:53:57,378 INFO L206 MainTranslator]: Completed translation [2023-11-24 21:53:57,379 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:53:57 WrapperNode [2023-11-24 21:53:57,379 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-24 21:53:57,380 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-24 21:53:57,380 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-24 21:53:57,381 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-24 21:53:57,389 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:53:57" (1/1) ... [2023-11-24 21:53:57,424 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:53:57" (1/1) ... [2023-11-24 21:53:57,459 INFO L138 Inliner]: procedures = 175, calls = 119, calls flagged for inlining = 30, calls inlined = 15, statements flattened = 202 [2023-11-24 21:53:57,459 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-24 21:53:57,460 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-24 21:53:57,460 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-24 21:53:57,460 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-24 21:53:57,472 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:53:57" (1/1) ... [2023-11-24 21:53:57,473 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:53:57" (1/1) ... [2023-11-24 21:53:57,489 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:53:57" (1/1) ... [2023-11-24 21:53:57,548 INFO L175 MemorySlicer]: Split 36 memory accesses to 3 slices as follows [2, 29, 5]. 81 percent of accesses are in the largest equivalence class. The 4 initializations are split as follows [2, 2, 0]. The 17 writes are split as follows [0, 13, 4]. [2023-11-24 21:53:57,548 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:53:57" (1/1) ... [2023-11-24 21:53:57,549 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:53:57" (1/1) ... [2023-11-24 21:53:57,585 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:53:57" (1/1) ... [2023-11-24 21:53:57,589 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:53:57" (1/1) ... [2023-11-24 21:53:57,593 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:53:57" (1/1) ... [2023-11-24 21:53:57,596 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:53:57" (1/1) ... [2023-11-24 21:53:57,603 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-24 21:53:57,604 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-24 21:53:57,604 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-24 21:53:57,604 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-24 21:53:57,605 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:53:57" (1/1) ... [2023-11-24 21:53:57,611 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-24 21:53:57,639 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ff601a-eb58-42e5-bfe3-252a6f671c11/bin/uautomizer-verify-NlZe1sFDwI/z3 [2023-11-24 21:53:57,650 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ff601a-eb58-42e5-bfe3-252a6f671c11/bin/uautomizer-verify-NlZe1sFDwI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-24 21:53:57,663 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ff601a-eb58-42e5-bfe3-252a6f671c11/bin/uautomizer-verify-NlZe1sFDwI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-24 21:53:57,681 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#0 [2023-11-24 21:53:57,681 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#1 [2023-11-24 21:53:57,681 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#2 [2023-11-24 21:53:57,681 INFO L130 BoogieDeclarations]: Found specification of procedure LDV_INIT_LIST_HEAD [2023-11-24 21:53:57,681 INFO L138 BoogieDeclarations]: Found implementation of procedure LDV_INIT_LIST_HEAD [2023-11-24 21:53:57,682 INFO L130 BoogieDeclarations]: Found specification of procedure __ldv_list_add [2023-11-24 21:53:57,682 INFO L138 BoogieDeclarations]: Found implementation of procedure __ldv_list_add [2023-11-24 21:53:57,682 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2023-11-24 21:53:57,682 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2023-11-24 21:53:57,682 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-24 21:53:57,682 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-24 21:53:57,683 INFO L130 BoogieDeclarations]: Found specification of procedure free_reports [2023-11-24 21:53:57,683 INFO L138 BoogieDeclarations]: Found implementation of procedure free_reports [2023-11-24 21:53:57,683 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-24 21:53:57,683 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2023-11-24 21:53:57,683 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2023-11-24 21:53:57,684 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2023-11-24 21:53:57,684 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2023-11-24 21:53:57,684 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2023-11-24 21:53:57,684 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2023-11-24 21:53:57,684 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#0 [2023-11-24 21:53:57,685 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#1 [2023-11-24 21:53:57,685 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#2 [2023-11-24 21:53:57,685 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-24 21:53:57,685 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#0 [2023-11-24 21:53:57,685 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#1 [2023-11-24 21:53:57,686 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#2 [2023-11-24 21:53:57,686 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_list_del [2023-11-24 21:53:57,686 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_list_del [2023-11-24 21:53:57,686 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2023-11-24 21:53:57,686 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2023-11-24 21:53:57,686 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-24 21:53:57,686 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-24 21:53:57,889 INFO L241 CfgBuilder]: Building ICFG [2023-11-24 21:53:57,892 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-24 21:53:58,698 INFO L282 CfgBuilder]: Performing block encoding [2023-11-24 21:53:58,815 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-24 21:53:58,815 INFO L309 CfgBuilder]: Removed 2 assume(true) statements. [2023-11-24 21:53:58,816 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 09:53:58 BoogieIcfgContainer [2023-11-24 21:53:58,816 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-24 21:53:58,818 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-24 21:53:58,818 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-24 21:53:58,821 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-24 21:53:58,822 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.11 09:53:56" (1/3) ... [2023-11-24 21:53:58,823 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7efae962 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 09:53:58, skipping insertion in model container [2023-11-24 21:53:58,823 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:53:57" (2/3) ... [2023-11-24 21:53:58,826 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7efae962 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 09:53:58, skipping insertion in model container [2023-11-24 21:53:58,826 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 09:53:58" (3/3) ... [2023-11-24 21:53:58,827 INFO L112 eAbstractionObserver]: Analyzing ICFG memleaks_test23_1.i [2023-11-24 21:53:58,849 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-24 21:53:58,849 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 79 error locations. [2023-11-24 21:53:58,918 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-24 21:53:58,927 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;@42df074d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-24 21:53:58,928 INFO L358 AbstractCegarLoop]: Starting to check reachability of 79 error locations. [2023-11-24 21:53:58,934 INFO L276 IsEmpty]: Start isEmpty. Operand has 177 states, 83 states have (on average 2.1325301204819276) internal successors, (177), 162 states have internal predecessors, (177), 8 states have call successors, (8), 6 states have call predecessors, (8), 6 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2023-11-24 21:53:58,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2023-11-24 21:53:58,945 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 21:53:58,945 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 21:53:58,946 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting LDV_INIT_LIST_HEADErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [free_reportsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 76 more)] === [2023-11-24 21:53:58,955 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:53:58,956 INFO L85 PathProgramCache]: Analyzing trace with hash 789780811, now seen corresponding path program 1 times [2023-11-24 21:53:58,983 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-24 21:53:58,986 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1749248363] [2023-11-24 21:53:58,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:53:58,989 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 [2023-11-24 21:53:58,989 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ff601a-eb58-42e5-bfe3-252a6f671c11/bin/uautomizer-verify-NlZe1sFDwI/mathsat [2023-11-24 21:53:58,995 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ff601a-eb58-42e5-bfe3-252a6f671c11/bin/uautomizer-verify-NlZe1sFDwI/mathsat -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) [2023-11-24 21:53:59,015 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ff601a-eb58-42e5-bfe3-252a6f671c11/bin/uautomizer-verify-NlZe1sFDwI/mathsat -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 [2023-11-24 21:53:59,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:53:59,161 INFO L262 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-24 21:53:59,167 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 21:53:59,244 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 [2023-11-24 21:53:59,324 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:53:59,325 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 21:53:59,325 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-24 21:53:59,326 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1749248363] [2023-11-24 21:53:59,326 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1749248363] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:53:59,327 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:53:59,328 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-24 21:53:59,330 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1758770424] [2023-11-24 21:53:59,330 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:53:59,335 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-24 21:53:59,336 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-24 21:53:59,366 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-24 21:53:59,367 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-24 21:53:59,370 INFO L87 Difference]: Start difference. First operand has 177 states, 83 states have (on average 2.1325301204819276) internal successors, (177), 162 states have internal predecessors, (177), 8 states have call successors, (8), 6 states have call predecessors, (8), 6 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) Second operand has 7 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 5 states have internal predecessors, (8), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-24 21:54:00,452 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 21:54:00,453 INFO L93 Difference]: Finished difference Result 192 states and 208 transitions. [2023-11-24 21:54:00,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-24 21:54:00,455 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 5 states have internal predecessors, (8), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 11 [2023-11-24 21:54:00,456 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 21:54:00,466 INFO L225 Difference]: With dead ends: 192 [2023-11-24 21:54:00,466 INFO L226 Difference]: Without dead ends: 191 [2023-11-24 21:54:00,468 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2023-11-24 21:54:00,472 INFO L413 NwaCegarLoop]: 157 mSDtfsCounter, 14 mSDsluCounter, 506 mSDsCounter, 0 mSdLazyCounter, 479 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 663 SdHoareTripleChecker+Invalid, 483 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 479 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-11-24 21:54:00,473 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 663 Invalid, 483 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 479 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-11-24 21:54:00,490 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 191 states. [2023-11-24 21:54:00,518 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 191 to 184. [2023-11-24 21:54:00,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 184 states, 89 states have (on average 2.044943820224719) internal successors, (182), 167 states have internal predecessors, (182), 9 states have call successors, (9), 7 states have call predecessors, (9), 8 states have return successors, (10), 9 states have call predecessors, (10), 9 states have call successors, (10) [2023-11-24 21:54:00,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 184 states to 184 states and 201 transitions. [2023-11-24 21:54:00,525 INFO L78 Accepts]: Start accepts. Automaton has 184 states and 201 transitions. Word has length 11 [2023-11-24 21:54:00,526 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 21:54:00,526 INFO L495 AbstractCegarLoop]: Abstraction has 184 states and 201 transitions. [2023-11-24 21:54:00,526 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 5 states have internal predecessors, (8), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-24 21:54:00,527 INFO L276 IsEmpty]: Start isEmpty. Operand 184 states and 201 transitions. [2023-11-24 21:54:00,527 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2023-11-24 21:54:00,527 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 21:54:00,528 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 21:54:00,536 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ff601a-eb58-42e5-bfe3-252a6f671c11/bin/uautomizer-verify-NlZe1sFDwI/mathsat -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 [2023-11-24 21:54:00,730 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ff601a-eb58-42e5-bfe3-252a6f671c11/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-24 21:54:00,731 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting LDV_INIT_LIST_HEADErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [free_reportsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 76 more)] === [2023-11-24 21:54:00,731 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:54:00,731 INFO L85 PathProgramCache]: Analyzing trace with hash 789780812, now seen corresponding path program 1 times [2023-11-24 21:54:00,732 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-24 21:54:00,732 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [643630407] [2023-11-24 21:54:00,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:54:00,733 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 [2023-11-24 21:54:00,733 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ff601a-eb58-42e5-bfe3-252a6f671c11/bin/uautomizer-verify-NlZe1sFDwI/mathsat [2023-11-24 21:54:00,734 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ff601a-eb58-42e5-bfe3-252a6f671c11/bin/uautomizer-verify-NlZe1sFDwI/mathsat -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) [2023-11-24 21:54:00,742 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ff601a-eb58-42e5-bfe3-252a6f671c11/bin/uautomizer-verify-NlZe1sFDwI/mathsat -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 [2023-11-24 21:54:00,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:54:00,830 INFO L262 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 14 conjunts are in the unsatisfiable core [2023-11-24 21:54:00,832 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 21:54:00,866 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 [2023-11-24 21:54:00,995 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:54:00,995 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 21:54:00,996 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-24 21:54:00,996 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [643630407] [2023-11-24 21:54:00,996 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [643630407] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:54:00,996 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:54:00,996 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-24 21:54:00,997 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1081279722] [2023-11-24 21:54:00,997 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:54:00,998 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-24 21:54:00,998 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-24 21:54:00,999 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-24 21:54:00,999 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-11-24 21:54:00,999 INFO L87 Difference]: Start difference. First operand 184 states and 201 transitions. Second operand has 8 states, 7 states have (on average 1.1428571428571428) internal successors, (8), 6 states have internal predecessors, (8), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-24 21:54:02,238 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 21:54:02,239 INFO L93 Difference]: Finished difference Result 188 states and 203 transitions. [2023-11-24 21:54:02,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-24 21:54:02,243 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 1.1428571428571428) internal successors, (8), 6 states have internal predecessors, (8), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 11 [2023-11-24 21:54:02,255 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 21:54:02,257 INFO L225 Difference]: With dead ends: 188 [2023-11-24 21:54:02,257 INFO L226 Difference]: Without dead ends: 188 [2023-11-24 21:54:02,258 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2023-11-24 21:54:02,259 INFO L413 NwaCegarLoop]: 156 mSDtfsCounter, 12 mSDsluCounter, 706 mSDsCounter, 0 mSdLazyCounter, 456 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 862 SdHoareTripleChecker+Invalid, 457 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 456 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-11-24 21:54:02,260 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 862 Invalid, 457 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 456 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-11-24 21:54:02,261 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 188 states. [2023-11-24 21:54:02,272 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 188 to 184. [2023-11-24 21:54:02,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 184 states, 89 states have (on average 2.0224719101123596) internal successors, (180), 167 states have internal predecessors, (180), 9 states have call successors, (9), 7 states have call predecessors, (9), 8 states have return successors, (10), 9 states have call predecessors, (10), 9 states have call successors, (10) [2023-11-24 21:54:02,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 184 states to 184 states and 199 transitions. [2023-11-24 21:54:02,276 INFO L78 Accepts]: Start accepts. Automaton has 184 states and 199 transitions. Word has length 11 [2023-11-24 21:54:02,277 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 21:54:02,277 INFO L495 AbstractCegarLoop]: Abstraction has 184 states and 199 transitions. [2023-11-24 21:54:02,277 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 1.1428571428571428) internal successors, (8), 6 states have internal predecessors, (8), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-24 21:54:02,277 INFO L276 IsEmpty]: Start isEmpty. Operand 184 states and 199 transitions. [2023-11-24 21:54:02,278 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2023-11-24 21:54:02,278 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 21:54:02,278 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 21:54:02,287 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ff601a-eb58-42e5-bfe3-252a6f671c11/bin/uautomizer-verify-NlZe1sFDwI/mathsat -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 [2023-11-24 21:54:02,481 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ff601a-eb58-42e5-bfe3-252a6f671c11/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-24 21:54:02,481 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting LDV_INIT_LIST_HEADErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [free_reportsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 76 more)] === [2023-11-24 21:54:02,482 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:54:02,482 INFO L85 PathProgramCache]: Analyzing trace with hash -1762376150, now seen corresponding path program 1 times [2023-11-24 21:54:02,483 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-24 21:54:02,483 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [293865178] [2023-11-24 21:54:02,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:54:02,483 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 [2023-11-24 21:54:02,483 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ff601a-eb58-42e5-bfe3-252a6f671c11/bin/uautomizer-verify-NlZe1sFDwI/mathsat [2023-11-24 21:54:02,488 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ff601a-eb58-42e5-bfe3-252a6f671c11/bin/uautomizer-verify-NlZe1sFDwI/mathsat -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) [2023-11-24 21:54:02,511 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ff601a-eb58-42e5-bfe3-252a6f671c11/bin/uautomizer-verify-NlZe1sFDwI/mathsat -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 [2023-11-24 21:54:02,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:54:02,600 INFO L262 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-24 21:54:02,602 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 21:54:02,653 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:54:02,653 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 21:54:02,654 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-24 21:54:02,654 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [293865178] [2023-11-24 21:54:02,654 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [293865178] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:54:02,654 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:54:02,654 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-24 21:54:02,655 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1110318616] [2023-11-24 21:54:02,655 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:54:02,655 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-24 21:54:02,656 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-24 21:54:02,656 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-24 21:54:02,656 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-24 21:54:02,657 INFO L87 Difference]: Start difference. First operand 184 states and 199 transitions. Second operand has 5 states, 5 states have (on average 1.6) internal successors, (8), 4 states have internal predecessors, (8), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-24 21:54:03,044 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 21:54:03,044 INFO L93 Difference]: Finished difference Result 177 states and 191 transitions. [2023-11-24 21:54:03,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-24 21:54:03,046 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.6) internal successors, (8), 4 states have internal predecessors, (8), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 11 [2023-11-24 21:54:03,046 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 21:54:03,048 INFO L225 Difference]: With dead ends: 177 [2023-11-24 21:54:03,048 INFO L226 Difference]: Without dead ends: 177 [2023-11-24 21:54:03,048 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-24 21:54:03,050 INFO L413 NwaCegarLoop]: 164 mSDtfsCounter, 0 mSDsluCounter, 476 mSDsCounter, 0 mSdLazyCounter, 114 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 640 SdHoareTripleChecker+Invalid, 115 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 114 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-24 21:54:03,050 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 640 Invalid, 115 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 114 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-24 21:54:03,051 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 177 states. [2023-11-24 21:54:03,061 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 177 to 176. [2023-11-24 21:54:03,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 176 states, 86 states have (on average 2.011627906976744) internal successors, (173), 160 states have internal predecessors, (173), 8 states have call successors, (8), 6 states have call predecessors, (8), 7 states have return successors, (9), 9 states have call predecessors, (9), 8 states have call successors, (9) [2023-11-24 21:54:03,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 176 states to 176 states and 190 transitions. [2023-11-24 21:54:03,078 INFO L78 Accepts]: Start accepts. Automaton has 176 states and 190 transitions. Word has length 11 [2023-11-24 21:54:03,078 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 21:54:03,079 INFO L495 AbstractCegarLoop]: Abstraction has 176 states and 190 transitions. [2023-11-24 21:54:03,079 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1.6) internal successors, (8), 4 states have internal predecessors, (8), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-24 21:54:03,079 INFO L276 IsEmpty]: Start isEmpty. Operand 176 states and 190 transitions. [2023-11-24 21:54:03,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2023-11-24 21:54:03,085 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 21:54:03,086 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 21:54:03,093 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ff601a-eb58-42e5-bfe3-252a6f671c11/bin/uautomizer-verify-NlZe1sFDwI/mathsat -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 [2023-11-24 21:54:03,288 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ff601a-eb58-42e5-bfe3-252a6f671c11/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-24 21:54:03,288 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr42REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [free_reportsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 76 more)] === [2023-11-24 21:54:03,288 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:54:03,289 INFO L85 PathProgramCache]: Analyzing trace with hash 789695051, now seen corresponding path program 1 times [2023-11-24 21:54:03,289 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-24 21:54:03,289 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [499450417] [2023-11-24 21:54:03,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:54:03,289 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 [2023-11-24 21:54:03,290 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ff601a-eb58-42e5-bfe3-252a6f671c11/bin/uautomizer-verify-NlZe1sFDwI/mathsat [2023-11-24 21:54:03,291 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ff601a-eb58-42e5-bfe3-252a6f671c11/bin/uautomizer-verify-NlZe1sFDwI/mathsat -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) [2023-11-24 21:54:03,294 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ff601a-eb58-42e5-bfe3-252a6f671c11/bin/uautomizer-verify-NlZe1sFDwI/mathsat -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 [2023-11-24 21:54:03,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:54:03,372 INFO L262 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-24 21:54:03,373 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 21:54:03,396 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:54:03,397 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 21:54:03,397 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-24 21:54:03,397 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [499450417] [2023-11-24 21:54:03,397 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [499450417] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:54:03,398 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:54:03,398 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-24 21:54:03,398 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1713190418] [2023-11-24 21:54:03,398 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:54:03,399 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-24 21:54:03,399 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-24 21:54:03,400 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-24 21:54:03,400 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-24 21:54:03,400 INFO L87 Difference]: Start difference. First operand 176 states and 190 transitions. Second operand has 5 states, 5 states have (on average 1.8) internal successors, (9), 4 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) [2023-11-24 21:54:03,715 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 21:54:03,715 INFO L93 Difference]: Finished difference Result 177 states and 190 transitions. [2023-11-24 21:54:03,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-24 21:54:03,719 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.8) internal successors, (9), 4 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 [2023-11-24 21:54:03,720 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 21:54:03,721 INFO L225 Difference]: With dead ends: 177 [2023-11-24 21:54:03,721 INFO L226 Difference]: Without dead ends: 177 [2023-11-24 21:54:03,722 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-24 21:54:03,723 INFO L413 NwaCegarLoop]: 157 mSDtfsCounter, 96 mSDsluCounter, 381 mSDsCounter, 0 mSdLazyCounter, 108 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 101 SdHoareTripleChecker+Valid, 538 SdHoareTripleChecker+Invalid, 108 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 108 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-24 21:54:03,724 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [101 Valid, 538 Invalid, 108 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 108 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-24 21:54:03,725 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 177 states. [2023-11-24 21:54:03,733 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 177 to 176. [2023-11-24 21:54:03,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 176 states, 86 states have (on average 2.0) internal successors, (172), 160 states have internal predecessors, (172), 8 states have call successors, (8), 6 states have call predecessors, (8), 7 states have return successors, (9), 9 states have call predecessors, (9), 8 states have call successors, (9) [2023-11-24 21:54:03,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 176 states to 176 states and 189 transitions. [2023-11-24 21:54:03,736 INFO L78 Accepts]: Start accepts. Automaton has 176 states and 189 transitions. Word has length 11 [2023-11-24 21:54:03,736 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 21:54:03,736 INFO L495 AbstractCegarLoop]: Abstraction has 176 states and 189 transitions. [2023-11-24 21:54:03,736 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1.8) internal successors, (9), 4 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) [2023-11-24 21:54:03,737 INFO L276 IsEmpty]: Start isEmpty. Operand 176 states and 189 transitions. [2023-11-24 21:54:03,737 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2023-11-24 21:54:03,737 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 21:54:03,738 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 21:54:03,743 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ff601a-eb58-42e5-bfe3-252a6f671c11/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Ended with exit code 0 [2023-11-24 21:54:03,940 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ff601a-eb58-42e5-bfe3-252a6f671c11/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-24 21:54:03,940 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr42REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [free_reportsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 76 more)] === [2023-11-24 21:54:03,941 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:54:03,941 INFO L85 PathProgramCache]: Analyzing trace with hash -1762461910, now seen corresponding path program 1 times [2023-11-24 21:54:03,941 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-24 21:54:03,941 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1865020155] [2023-11-24 21:54:03,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:54:03,942 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 [2023-11-24 21:54:03,942 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ff601a-eb58-42e5-bfe3-252a6f671c11/bin/uautomizer-verify-NlZe1sFDwI/mathsat [2023-11-24 21:54:03,943 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ff601a-eb58-42e5-bfe3-252a6f671c11/bin/uautomizer-verify-NlZe1sFDwI/mathsat -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) [2023-11-24 21:54:03,951 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ff601a-eb58-42e5-bfe3-252a6f671c11/bin/uautomizer-verify-NlZe1sFDwI/mathsat -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 [2023-11-24 21:54:04,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:54:04,029 INFO L262 TraceCheckSpWp]: Trace formula consists of 57 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-24 21:54:04,030 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 21:54:04,082 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:54:04,082 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 21:54:04,082 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-24 21:54:04,085 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1865020155] [2023-11-24 21:54:04,085 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1865020155] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:54:04,085 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:54:04,085 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-24 21:54:04,086 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [268893490] [2023-11-24 21:54:04,086 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:54:04,086 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-24 21:54:04,086 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-24 21:54:04,087 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-24 21:54:04,087 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-24 21:54:04,087 INFO L87 Difference]: Start difference. First operand 176 states and 189 transitions. Second operand has 5 states, 5 states have (on average 1.8) internal successors, (9), 5 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) [2023-11-24 21:54:04,427 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 21:54:04,427 INFO L93 Difference]: Finished difference Result 181 states and 193 transitions. [2023-11-24 21:54:04,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-24 21:54:04,428 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.8) internal successors, (9), 5 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 [2023-11-24 21:54:04,428 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 21:54:04,430 INFO L225 Difference]: With dead ends: 181 [2023-11-24 21:54:04,430 INFO L226 Difference]: Without dead ends: 181 [2023-11-24 21:54:04,430 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-11-24 21:54:04,431 INFO L413 NwaCegarLoop]: 159 mSDtfsCounter, 93 mSDsluCounter, 389 mSDsCounter, 0 mSdLazyCounter, 99 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 98 SdHoareTripleChecker+Valid, 548 SdHoareTripleChecker+Invalid, 99 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 99 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-24 21:54:04,431 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [98 Valid, 548 Invalid, 99 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 99 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-24 21:54:04,433 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181 states. [2023-11-24 21:54:04,453 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181 to 178. [2023-11-24 21:54:04,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 178 states, 88 states have (on average 1.9772727272727273) internal successors, (174), 162 states have internal predecessors, (174), 8 states have call successors, (8), 6 states have call predecessors, (8), 7 states have return successors, (9), 9 states have call predecessors, (9), 8 states have call successors, (9) [2023-11-24 21:54:04,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178 states to 178 states and 191 transitions. [2023-11-24 21:54:04,459 INFO L78 Accepts]: Start accepts. Automaton has 178 states and 191 transitions. Word has length 11 [2023-11-24 21:54:04,460 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 21:54:04,460 INFO L495 AbstractCegarLoop]: Abstraction has 178 states and 191 transitions. [2023-11-24 21:54:04,460 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1.8) internal successors, (9), 5 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) [2023-11-24 21:54:04,460 INFO L276 IsEmpty]: Start isEmpty. Operand 178 states and 191 transitions. [2023-11-24 21:54:04,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2023-11-24 21:54:04,461 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 21:54:04,461 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 21:54:04,469 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ff601a-eb58-42e5-bfe3-252a6f671c11/bin/uautomizer-verify-NlZe1sFDwI/mathsat -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)] Ended with exit code 0 [2023-11-24 21:54:04,664 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ff601a-eb58-42e5-bfe3-252a6f671c11/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-24 21:54:04,664 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr49ASSERT_VIOLATIONMEMORY_LEAK === [free_reportsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 76 more)] === [2023-11-24 21:54:04,665 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:54:04,665 INFO L85 PathProgramCache]: Analyzing trace with hash 1198275756, now seen corresponding path program 1 times [2023-11-24 21:54:04,665 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-24 21:54:04,665 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1967511643] [2023-11-24 21:54:04,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:54:04,665 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 [2023-11-24 21:54:04,665 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ff601a-eb58-42e5-bfe3-252a6f671c11/bin/uautomizer-verify-NlZe1sFDwI/mathsat [2023-11-24 21:54:04,667 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ff601a-eb58-42e5-bfe3-252a6f671c11/bin/uautomizer-verify-NlZe1sFDwI/mathsat -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) [2023-11-24 21:54:04,674 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ff601a-eb58-42e5-bfe3-252a6f671c11/bin/uautomizer-verify-NlZe1sFDwI/mathsat -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 [2023-11-24 21:54:04,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:54:04,746 INFO L262 TraceCheckSpWp]: Trace formula consists of 50 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-24 21:54:04,747 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 21:54:04,778 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:54:04,778 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 21:54:04,778 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-24 21:54:04,779 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1967511643] [2023-11-24 21:54:04,779 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1967511643] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:54:04,779 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:54:04,779 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-24 21:54:04,779 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [388157576] [2023-11-24 21:54:04,780 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:54:04,780 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-24 21:54:04,780 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-24 21:54:04,781 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-24 21:54:04,781 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-24 21:54:04,781 INFO L87 Difference]: Start difference. First operand 178 states and 191 transitions. Second operand has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-24 21:54:05,306 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 21:54:05,306 INFO L93 Difference]: Finished difference Result 190 states and 205 transitions. [2023-11-24 21:54:05,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-24 21:54:05,310 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 12 [2023-11-24 21:54:05,310 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 21:54:05,311 INFO L225 Difference]: With dead ends: 190 [2023-11-24 21:54:05,311 INFO L226 Difference]: Without dead ends: 182 [2023-11-24 21:54:05,312 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-24 21:54:05,313 INFO L413 NwaCegarLoop]: 134 mSDtfsCounter, 44 mSDsluCounter, 171 mSDsCounter, 0 mSdLazyCounter, 211 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 305 SdHoareTripleChecker+Invalid, 219 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 211 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-24 21:54:05,313 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [45 Valid, 305 Invalid, 219 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 211 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-24 21:54:05,314 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182 states. [2023-11-24 21:54:05,322 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182 to 172. [2023-11-24 21:54:05,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 172 states, 83 states have (on average 2.0240963855421685) internal successors, (168), 157 states have internal predecessors, (168), 8 states have call successors, (8), 6 states have call predecessors, (8), 6 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2023-11-24 21:54:05,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172 states to 172 states and 184 transitions. [2023-11-24 21:54:05,325 INFO L78 Accepts]: Start accepts. Automaton has 172 states and 184 transitions. Word has length 12 [2023-11-24 21:54:05,325 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 21:54:05,327 INFO L495 AbstractCegarLoop]: Abstraction has 172 states and 184 transitions. [2023-11-24 21:54:05,327 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-24 21:54:05,327 INFO L276 IsEmpty]: Start isEmpty. Operand 172 states and 184 transitions. [2023-11-24 21:54:05,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2023-11-24 21:54:05,329 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 21:54:05,329 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 21:54:05,336 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ff601a-eb58-42e5-bfe3-252a6f671c11/bin/uautomizer-verify-NlZe1sFDwI/mathsat -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 [2023-11-24 21:54:05,531 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ff601a-eb58-42e5-bfe3-252a6f671c11/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-24 21:54:05,531 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [free_reportsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 76 more)] === [2023-11-24 21:54:05,532 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:54:05,532 INFO L85 PathProgramCache]: Analyzing trace with hash 529564328, now seen corresponding path program 1 times [2023-11-24 21:54:05,532 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-24 21:54:05,532 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1961136816] [2023-11-24 21:54:05,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:54:05,532 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 [2023-11-24 21:54:05,533 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ff601a-eb58-42e5-bfe3-252a6f671c11/bin/uautomizer-verify-NlZe1sFDwI/mathsat [2023-11-24 21:54:05,534 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ff601a-eb58-42e5-bfe3-252a6f671c11/bin/uautomizer-verify-NlZe1sFDwI/mathsat -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) [2023-11-24 21:54:05,535 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ff601a-eb58-42e5-bfe3-252a6f671c11/bin/uautomizer-verify-NlZe1sFDwI/mathsat -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 [2023-11-24 21:54:05,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:54:05,633 INFO L262 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 15 conjunts are in the unsatisfiable core [2023-11-24 21:54:05,636 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 21:54:05,724 WARN L876 $PredicateComparison]: unable to prove that (exists ((|ldv_malloc_#res.base| (_ BitVec 32))) (and (= (_ bv0 1) (select |c_old(#valid)| |ldv_malloc_#res.base|)) (= (store |c_old(#length)| |ldv_malloc_#res.base| (select |c_#length| |ldv_malloc_#res.base|)) |c_#length|))) is different from true [2023-11-24 21:54:05,764 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:54:05,766 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 9 [2023-11-24 21:54:05,855 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:54:05,856 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 21:54:05,856 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-24 21:54:05,856 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1961136816] [2023-11-24 21:54:05,856 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1961136816] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:54:05,856 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:54:05,857 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-24 21:54:05,857 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1323576055] [2023-11-24 21:54:05,857 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:54:05,857 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-24 21:54:05,858 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-24 21:54:05,858 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-24 21:54:05,858 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=19, Unknown=1, NotChecked=8, Total=42 [2023-11-24 21:54:05,859 INFO L87 Difference]: Start difference. First operand 172 states and 184 transitions. Second operand has 7 states, 5 states have (on average 2.0) internal successors, (10), 6 states have internal predecessors, (10), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-24 21:54:06,980 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 21:54:06,980 INFO L93 Difference]: Finished difference Result 182 states and 197 transitions. [2023-11-24 21:54:06,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-24 21:54:06,981 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 2.0) internal successors, (10), 6 states have internal predecessors, (10), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) Word has length 14 [2023-11-24 21:54:06,981 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 21:54:06,983 INFO L225 Difference]: With dead ends: 182 [2023-11-24 21:54:06,983 INFO L226 Difference]: Without dead ends: 182 [2023-11-24 21:54:06,983 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=27, Unknown=1, NotChecked=10, Total=56 [2023-11-24 21:54:06,984 INFO L413 NwaCegarLoop]: 115 mSDtfsCounter, 46 mSDsluCounter, 264 mSDsCounter, 0 mSdLazyCounter, 461 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 379 SdHoareTripleChecker+Invalid, 674 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 461 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 202 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-11-24 21:54:06,984 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [47 Valid, 379 Invalid, 674 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 461 Invalid, 0 Unknown, 202 Unchecked, 1.1s Time] [2023-11-24 21:54:06,985 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182 states. [2023-11-24 21:54:06,996 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182 to 171. [2023-11-24 21:54:06,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 171 states, 83 states have (on average 2.0120481927710845) internal successors, (167), 156 states have internal predecessors, (167), 8 states have call successors, (8), 6 states have call predecessors, (8), 6 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2023-11-24 21:54:06,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171 states to 171 states and 183 transitions. [2023-11-24 21:54:06,998 INFO L78 Accepts]: Start accepts. Automaton has 171 states and 183 transitions. Word has length 14 [2023-11-24 21:54:06,998 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 21:54:06,999 INFO L495 AbstractCegarLoop]: Abstraction has 171 states and 183 transitions. [2023-11-24 21:54:06,999 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 2.0) internal successors, (10), 6 states have internal predecessors, (10), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-24 21:54:06,999 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states and 183 transitions. [2023-11-24 21:54:06,999 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2023-11-24 21:54:06,999 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 21:54:06,999 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 21:54:07,008 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ff601a-eb58-42e5-bfe3-252a6f671c11/bin/uautomizer-verify-NlZe1sFDwI/mathsat -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 [2023-11-24 21:54:07,208 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ff601a-eb58-42e5-bfe3-252a6f671c11/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-24 21:54:07,208 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [free_reportsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 76 more)] === [2023-11-24 21:54:07,209 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:54:07,209 INFO L85 PathProgramCache]: Analyzing trace with hash 529564327, now seen corresponding path program 1 times [2023-11-24 21:54:07,209 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-24 21:54:07,209 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1280904116] [2023-11-24 21:54:07,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:54:07,210 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 [2023-11-24 21:54:07,210 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ff601a-eb58-42e5-bfe3-252a6f671c11/bin/uautomizer-verify-NlZe1sFDwI/mathsat [2023-11-24 21:54:07,211 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ff601a-eb58-42e5-bfe3-252a6f671c11/bin/uautomizer-verify-NlZe1sFDwI/mathsat -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) [2023-11-24 21:54:07,214 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ff601a-eb58-42e5-bfe3-252a6f671c11/bin/uautomizer-verify-NlZe1sFDwI/mathsat -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 [2023-11-24 21:54:07,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:54:07,322 INFO L262 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-24 21:54:07,324 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 21:54:07,439 INFO L349 Elim1Store]: treesize reduction 24, result has 33.3 percent of original size [2023-11-24 21:54:07,440 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 21 treesize of output 20 [2023-11-24 21:54:07,517 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:54:07,517 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 21:54:07,518 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-24 21:54:07,518 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1280904116] [2023-11-24 21:54:07,518 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1280904116] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:54:07,518 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:54:07,519 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-24 21:54:07,519 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1148304495] [2023-11-24 21:54:07,519 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:54:07,519 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-24 21:54:07,520 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-24 21:54:07,520 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-24 21:54:07,521 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-24 21:54:07,521 INFO L87 Difference]: Start difference. First operand 171 states and 183 transitions. Second operand has 6 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 1 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-24 21:54:08,581 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 21:54:08,582 INFO L93 Difference]: Finished difference Result 218 states and 233 transitions. [2023-11-24 21:54:08,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-24 21:54:08,582 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 1 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 14 [2023-11-24 21:54:08,582 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 21:54:08,584 INFO L225 Difference]: With dead ends: 218 [2023-11-24 21:54:08,584 INFO L226 Difference]: Without dead ends: 218 [2023-11-24 21:54:08,584 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2023-11-24 21:54:08,585 INFO L413 NwaCegarLoop]: 108 mSDtfsCounter, 247 mSDsluCounter, 211 mSDsCounter, 0 mSdLazyCounter, 355 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 249 SdHoareTripleChecker+Valid, 319 SdHoareTripleChecker+Invalid, 393 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 355 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-11-24 21:54:08,585 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [249 Valid, 319 Invalid, 393 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 355 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-11-24 21:54:08,586 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218 states. [2023-11-24 21:54:08,591 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 218 to 179. [2023-11-24 21:54:08,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 179 states, 90 states have (on average 1.988888888888889) internal successors, (179), 163 states have internal predecessors, (179), 8 states have call successors, (8), 7 states have call predecessors, (8), 8 states have return successors, (10), 8 states have call predecessors, (10), 8 states have call successors, (10) [2023-11-24 21:54:08,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179 states to 179 states and 197 transitions. [2023-11-24 21:54:08,593 INFO L78 Accepts]: Start accepts. Automaton has 179 states and 197 transitions. Word has length 14 [2023-11-24 21:54:08,593 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 21:54:08,593 INFO L495 AbstractCegarLoop]: Abstraction has 179 states and 197 transitions. [2023-11-24 21:54:08,594 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 1 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-24 21:54:08,594 INFO L276 IsEmpty]: Start isEmpty. Operand 179 states and 197 transitions. [2023-11-24 21:54:08,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2023-11-24 21:54:08,594 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 21:54:08,594 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 21:54:08,607 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ff601a-eb58-42e5-bfe3-252a6f671c11/bin/uautomizer-verify-NlZe1sFDwI/mathsat -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 [2023-11-24 21:54:08,795 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ff601a-eb58-42e5-bfe3-252a6f671c11/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-24 21:54:08,795 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [free_reportsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 76 more)] === [2023-11-24 21:54:08,796 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:54:08,796 INFO L85 PathProgramCache]: Analyzing trace with hash 1170359805, now seen corresponding path program 1 times [2023-11-24 21:54:08,796 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-24 21:54:08,796 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2067781442] [2023-11-24 21:54:08,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:54:08,797 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 [2023-11-24 21:54:08,797 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ff601a-eb58-42e5-bfe3-252a6f671c11/bin/uautomizer-verify-NlZe1sFDwI/mathsat [2023-11-24 21:54:08,798 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ff601a-eb58-42e5-bfe3-252a6f671c11/bin/uautomizer-verify-NlZe1sFDwI/mathsat -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) [2023-11-24 21:54:08,799 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ff601a-eb58-42e5-bfe3-252a6f671c11/bin/uautomizer-verify-NlZe1sFDwI/mathsat -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 [2023-11-24 21:54:08,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:54:08,922 INFO L262 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-24 21:54:08,923 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 21:54:08,930 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 [2023-11-24 21:54:08,955 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:54:08,956 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 21:54:08,956 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-24 21:54:08,956 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2067781442] [2023-11-24 21:54:08,956 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2067781442] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:54:08,956 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:54:08,956 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-24 21:54:08,956 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1852297846] [2023-11-24 21:54:08,957 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:54:08,957 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-24 21:54:08,957 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-24 21:54:08,957 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-24 21:54:08,958 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-24 21:54:08,958 INFO L87 Difference]: Start difference. First operand 179 states and 197 transitions. Second operand has 5 states, 3 states have (on average 4.666666666666667) internal successors, (14), 4 states have internal predecessors, (14), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2023-11-24 21:54:09,667 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 21:54:09,667 INFO L93 Difference]: Finished difference Result 227 states and 253 transitions. [2023-11-24 21:54:09,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-24 21:54:09,668 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 3 states have (on average 4.666666666666667) internal successors, (14), 4 states have internal predecessors, (14), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 20 [2023-11-24 21:54:09,668 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 21:54:09,670 INFO L225 Difference]: With dead ends: 227 [2023-11-24 21:54:09,670 INFO L226 Difference]: Without dead ends: 227 [2023-11-24 21:54:09,670 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-24 21:54:09,671 INFO L413 NwaCegarLoop]: 132 mSDtfsCounter, 59 mSDsluCounter, 277 mSDsCounter, 0 mSdLazyCounter, 300 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 59 SdHoareTripleChecker+Valid, 409 SdHoareTripleChecker+Invalid, 302 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 300 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-11-24 21:54:09,671 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [59 Valid, 409 Invalid, 302 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 300 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-11-24 21:54:09,672 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 227 states. [2023-11-24 21:54:09,679 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 227 to 199. [2023-11-24 21:54:09,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 199 states, 112 states have (on average 2.0267857142857144) internal successors, (227), 183 states have internal predecessors, (227), 8 states have call successors, (8), 7 states have call predecessors, (8), 8 states have return successors, (10), 8 states have call predecessors, (10), 8 states have call successors, (10) [2023-11-24 21:54:09,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 199 states to 199 states and 245 transitions. [2023-11-24 21:54:09,681 INFO L78 Accepts]: Start accepts. Automaton has 199 states and 245 transitions. Word has length 20 [2023-11-24 21:54:09,682 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 21:54:09,682 INFO L495 AbstractCegarLoop]: Abstraction has 199 states and 245 transitions. [2023-11-24 21:54:09,682 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 3 states have (on average 4.666666666666667) internal successors, (14), 4 states have internal predecessors, (14), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2023-11-24 21:54:09,682 INFO L276 IsEmpty]: Start isEmpty. Operand 199 states and 245 transitions. [2023-11-24 21:54:09,684 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2023-11-24 21:54:09,684 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 21:54:09,685 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 21:54:09,693 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ff601a-eb58-42e5-bfe3-252a6f671c11/bin/uautomizer-verify-NlZe1sFDwI/mathsat -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 [2023-11-24 21:54:09,887 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ff601a-eb58-42e5-bfe3-252a6f671c11/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-24 21:54:09,887 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [free_reportsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 76 more)] === [2023-11-24 21:54:09,888 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:54:09,888 INFO L85 PathProgramCache]: Analyzing trace with hash 1170359806, now seen corresponding path program 1 times [2023-11-24 21:54:09,888 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-24 21:54:09,888 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1704709426] [2023-11-24 21:54:09,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:54:09,889 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 [2023-11-24 21:54:09,889 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ff601a-eb58-42e5-bfe3-252a6f671c11/bin/uautomizer-verify-NlZe1sFDwI/mathsat [2023-11-24 21:54:09,890 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ff601a-eb58-42e5-bfe3-252a6f671c11/bin/uautomizer-verify-NlZe1sFDwI/mathsat -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) [2023-11-24 21:54:09,895 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ff601a-eb58-42e5-bfe3-252a6f671c11/bin/uautomizer-verify-NlZe1sFDwI/mathsat -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 [2023-11-24 21:54:10,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:54:10,017 INFO L262 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-24 21:54:10,020 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 21:54:10,030 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 [2023-11-24 21:54:10,090 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:54:10,090 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 21:54:10,091 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-24 21:54:10,091 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1704709426] [2023-11-24 21:54:10,091 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1704709426] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:54:10,091 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:54:10,091 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-24 21:54:10,091 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1893766624] [2023-11-24 21:54:10,092 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:54:10,092 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-24 21:54:10,092 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-24 21:54:10,093 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-24 21:54:10,093 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-24 21:54:10,093 INFO L87 Difference]: Start difference. First operand 199 states and 245 transitions. Second operand has 5 states, 3 states have (on average 4.666666666666667) internal successors, (14), 4 states have internal predecessors, (14), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2023-11-24 21:54:10,944 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 21:54:10,944 INFO L93 Difference]: Finished difference Result 231 states and 257 transitions. [2023-11-24 21:54:10,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-24 21:54:10,944 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 3 states have (on average 4.666666666666667) internal successors, (14), 4 states have internal predecessors, (14), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 20 [2023-11-24 21:54:10,945 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 21:54:10,946 INFO L225 Difference]: With dead ends: 231 [2023-11-24 21:54:10,946 INFO L226 Difference]: Without dead ends: 231 [2023-11-24 21:54:10,947 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-24 21:54:10,947 INFO L413 NwaCegarLoop]: 124 mSDtfsCounter, 64 mSDsluCounter, 280 mSDsCounter, 0 mSdLazyCounter, 298 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 404 SdHoareTripleChecker+Invalid, 301 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 298 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-11-24 21:54:10,948 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [65 Valid, 404 Invalid, 301 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 298 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-11-24 21:54:10,949 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 231 states. [2023-11-24 21:54:10,956 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 231 to 201. [2023-11-24 21:54:10,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 201 states, 115 states have (on average 1.991304347826087) internal successors, (229), 184 states have internal predecessors, (229), 9 states have call successors, (9), 7 states have call predecessors, (9), 8 states have return successors, (12), 9 states have call predecessors, (12), 9 states have call successors, (12) [2023-11-24 21:54:10,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 201 states to 201 states and 250 transitions. [2023-11-24 21:54:10,959 INFO L78 Accepts]: Start accepts. Automaton has 201 states and 250 transitions. Word has length 20 [2023-11-24 21:54:10,961 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 21:54:10,961 INFO L495 AbstractCegarLoop]: Abstraction has 201 states and 250 transitions. [2023-11-24 21:54:10,961 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 3 states have (on average 4.666666666666667) internal successors, (14), 4 states have internal predecessors, (14), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2023-11-24 21:54:10,962 INFO L276 IsEmpty]: Start isEmpty. Operand 201 states and 250 transitions. [2023-11-24 21:54:10,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2023-11-24 21:54:10,964 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 21:54:10,964 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 21:54:10,974 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ff601a-eb58-42e5-bfe3-252a6f671c11/bin/uautomizer-verify-NlZe1sFDwI/mathsat -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 [2023-11-24 21:54:11,168 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ff601a-eb58-42e5-bfe3-252a6f671c11/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-24 21:54:11,168 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr39ASSERT_VIOLATIONMEMORY_FREE === [free_reportsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 76 more)] === [2023-11-24 21:54:11,169 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:54:11,169 INFO L85 PathProgramCache]: Analyzing trace with hash -565584954, now seen corresponding path program 1 times [2023-11-24 21:54:11,170 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-24 21:54:11,170 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1252518434] [2023-11-24 21:54:11,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:54:11,170 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 [2023-11-24 21:54:11,170 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ff601a-eb58-42e5-bfe3-252a6f671c11/bin/uautomizer-verify-NlZe1sFDwI/mathsat [2023-11-24 21:54:11,171 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ff601a-eb58-42e5-bfe3-252a6f671c11/bin/uautomizer-verify-NlZe1sFDwI/mathsat -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) [2023-11-24 21:54:11,199 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ff601a-eb58-42e5-bfe3-252a6f671c11/bin/uautomizer-verify-NlZe1sFDwI/mathsat -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 [2023-11-24 21:54:11,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:54:11,307 INFO L262 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-24 21:54:11,309 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 21:54:11,341 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:54:11,342 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 21:54:11,342 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-24 21:54:11,342 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1252518434] [2023-11-24 21:54:11,342 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1252518434] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:54:11,342 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:54:11,342 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-24 21:54:11,343 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1458690876] [2023-11-24 21:54:11,343 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:54:11,343 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-24 21:54:11,343 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-24 21:54:11,344 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-24 21:54:11,344 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-24 21:54:11,345 INFO L87 Difference]: Start difference. First operand 201 states and 250 transitions. Second operand has 5 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2023-11-24 21:54:11,679 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 21:54:11,679 INFO L93 Difference]: Finished difference Result 201 states and 249 transitions. [2023-11-24 21:54:11,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-24 21:54:11,679 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 22 [2023-11-24 21:54:11,680 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 21:54:11,681 INFO L225 Difference]: With dead ends: 201 [2023-11-24 21:54:11,681 INFO L226 Difference]: Without dead ends: 201 [2023-11-24 21:54:11,681 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-24 21:54:11,682 INFO L413 NwaCegarLoop]: 142 mSDtfsCounter, 77 mSDsluCounter, 365 mSDsCounter, 0 mSdLazyCounter, 118 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 80 SdHoareTripleChecker+Valid, 507 SdHoareTripleChecker+Invalid, 118 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 118 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-24 21:54:11,682 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [80 Valid, 507 Invalid, 118 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 118 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-24 21:54:11,683 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 201 states. [2023-11-24 21:54:11,694 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 201 to 201. [2023-11-24 21:54:11,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 201 states, 115 states have (on average 1.982608695652174) internal successors, (228), 184 states have internal predecessors, (228), 9 states have call successors, (9), 7 states have call predecessors, (9), 8 states have return successors, (12), 9 states have call predecessors, (12), 9 states have call successors, (12) [2023-11-24 21:54:11,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 201 states to 201 states and 249 transitions. [2023-11-24 21:54:11,697 INFO L78 Accepts]: Start accepts. Automaton has 201 states and 249 transitions. Word has length 22 [2023-11-24 21:54:11,697 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 21:54:11,697 INFO L495 AbstractCegarLoop]: Abstraction has 201 states and 249 transitions. [2023-11-24 21:54:11,697 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2023-11-24 21:54:11,698 INFO L276 IsEmpty]: Start isEmpty. Operand 201 states and 249 transitions. [2023-11-24 21:54:11,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2023-11-24 21:54:11,703 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 21:54:11,703 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 21:54:11,711 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ff601a-eb58-42e5-bfe3-252a6f671c11/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Ended with exit code 0 [2023-11-24 21:54:11,906 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ff601a-eb58-42e5-bfe3-252a6f671c11/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-24 21:54:11,906 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [free_reportsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 76 more)] === [2023-11-24 21:54:11,906 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:54:11,907 INFO L85 PathProgramCache]: Analyzing trace with hash 1193594705, now seen corresponding path program 1 times [2023-11-24 21:54:11,907 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-24 21:54:11,907 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1828571491] [2023-11-24 21:54:11,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:54:11,907 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 [2023-11-24 21:54:11,907 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ff601a-eb58-42e5-bfe3-252a6f671c11/bin/uautomizer-verify-NlZe1sFDwI/mathsat [2023-11-24 21:54:11,908 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ff601a-eb58-42e5-bfe3-252a6f671c11/bin/uautomizer-verify-NlZe1sFDwI/mathsat -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) [2023-11-24 21:54:11,909 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ff601a-eb58-42e5-bfe3-252a6f671c11/bin/uautomizer-verify-NlZe1sFDwI/mathsat -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 [2023-11-24 21:54:12,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:54:12,117 INFO L262 TraceCheckSpWp]: Trace formula consists of 181 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-24 21:54:12,120 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 21:54:12,132 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 [2023-11-24 21:54:12,182 INFO L349 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2023-11-24 21:54:12,182 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 20 [2023-11-24 21:54:12,248 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:54:12,249 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 21:54:12,249 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-24 21:54:12,249 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1828571491] [2023-11-24 21:54:12,249 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1828571491] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:54:12,249 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:54:12,250 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-24 21:54:12,250 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [406553310] [2023-11-24 21:54:12,250 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:54:12,250 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-24 21:54:12,251 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-24 21:54:12,251 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-24 21:54:12,251 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-11-24 21:54:12,252 INFO L87 Difference]: Start difference. First operand 201 states and 249 transitions. Second operand has 7 states, 5 states have (on average 4.0) internal successors, (20), 5 states have internal predecessors, (20), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-11-24 21:54:13,127 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 21:54:13,127 INFO L93 Difference]: Finished difference Result 212 states and 256 transitions. [2023-11-24 21:54:13,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-24 21:54:13,135 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 4.0) internal successors, (20), 5 states have internal predecessors, (20), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 26 [2023-11-24 21:54:13,136 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 21:54:13,137 INFO L225 Difference]: With dead ends: 212 [2023-11-24 21:54:13,137 INFO L226 Difference]: Without dead ends: 212 [2023-11-24 21:54:13,138 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-11-24 21:54:13,138 INFO L413 NwaCegarLoop]: 89 mSDtfsCounter, 119 mSDsluCounter, 319 mSDsCounter, 0 mSdLazyCounter, 497 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 121 SdHoareTripleChecker+Valid, 408 SdHoareTripleChecker+Invalid, 511 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 497 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-11-24 21:54:13,139 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [121 Valid, 408 Invalid, 511 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 497 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-11-24 21:54:13,140 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 212 states. [2023-11-24 21:54:13,155 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 212 to 196. [2023-11-24 21:54:13,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 196 states, 115 states have (on average 1.8956521739130434) internal successors, (218), 179 states have internal predecessors, (218), 9 states have call successors, (9), 7 states have call predecessors, (9), 8 states have return successors, (12), 9 states have call predecessors, (12), 9 states have call successors, (12) [2023-11-24 21:54:13,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 196 states to 196 states and 239 transitions. [2023-11-24 21:54:13,157 INFO L78 Accepts]: Start accepts. Automaton has 196 states and 239 transitions. Word has length 26 [2023-11-24 21:54:13,158 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 21:54:13,158 INFO L495 AbstractCegarLoop]: Abstraction has 196 states and 239 transitions. [2023-11-24 21:54:13,158 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 4.0) internal successors, (20), 5 states have internal predecessors, (20), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-11-24 21:54:13,158 INFO L276 IsEmpty]: Start isEmpty. Operand 196 states and 239 transitions. [2023-11-24 21:54:13,159 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2023-11-24 21:54:13,159 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 21:54:13,159 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 21:54:13,168 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ff601a-eb58-42e5-bfe3-252a6f671c11/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2023-11-24 21:54:13,363 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ff601a-eb58-42e5-bfe3-252a6f671c11/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-24 21:54:13,363 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [free_reportsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 76 more)] === [2023-11-24 21:54:13,364 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:54:13,364 INFO L85 PathProgramCache]: Analyzing trace with hash 1193594706, now seen corresponding path program 1 times [2023-11-24 21:54:13,364 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-24 21:54:13,364 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1418973445] [2023-11-24 21:54:13,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:54:13,364 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 [2023-11-24 21:54:13,365 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ff601a-eb58-42e5-bfe3-252a6f671c11/bin/uautomizer-verify-NlZe1sFDwI/mathsat [2023-11-24 21:54:13,365 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ff601a-eb58-42e5-bfe3-252a6f671c11/bin/uautomizer-verify-NlZe1sFDwI/mathsat -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) [2023-11-24 21:54:13,366 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ff601a-eb58-42e5-bfe3-252a6f671c11/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2023-11-24 21:54:13,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:54:13,593 INFO L262 TraceCheckSpWp]: Trace formula consists of 181 conjuncts, 16 conjunts are in the unsatisfiable core [2023-11-24 21:54:13,596 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 21:54:13,610 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 [2023-11-24 21:54:13,618 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 [2023-11-24 21:54:13,663 WARN L876 $PredicateComparison]: unable to prove that (exists ((|ldv_zalloc_#t~malloc13#1.base| (_ BitVec 32))) (and (= (select |c_old(#valid)| |ldv_zalloc_#t~malloc13#1.base|) (_ bv0 1)) (= |c_#length| (store |c_old(#length)| |ldv_zalloc_#t~malloc13#1.base| (select |c_#length| |ldv_zalloc_#t~malloc13#1.base|))))) is different from true [2023-11-24 21:54:13,687 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:54:13,688 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 9 [2023-11-24 21:54:13,703 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2023-11-24 21:54:13,703 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2023-11-24 21:54:13,779 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:54:13,780 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 21:54:13,780 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-24 21:54:13,780 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1418973445] [2023-11-24 21:54:13,780 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1418973445] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:54:13,780 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:54:13,780 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-24 21:54:13,781 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [496778865] [2023-11-24 21:54:13,781 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:54:13,781 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-24 21:54:13,781 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-24 21:54:13,782 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-24 21:54:13,782 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=21, Unknown=1, NotChecked=8, Total=42 [2023-11-24 21:54:13,783 INFO L87 Difference]: Start difference. First operand 196 states and 239 transitions. Second operand has 7 states, 4 states have (on average 5.0) internal successors, (20), 6 states have internal predecessors, (20), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-11-24 21:54:15,053 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 21:54:15,054 INFO L93 Difference]: Finished difference Result 241 states and 269 transitions. [2023-11-24 21:54:15,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-24 21:54:15,059 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 4 states have (on average 5.0) internal successors, (20), 6 states have internal predecessors, (20), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 26 [2023-11-24 21:54:15,060 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 21:54:15,063 INFO L225 Difference]: With dead ends: 241 [2023-11-24 21:54:15,064 INFO L226 Difference]: Without dead ends: 241 [2023-11-24 21:54:15,064 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=37, Unknown=1, NotChecked=12, Total=72 [2023-11-24 21:54:15,066 INFO L413 NwaCegarLoop]: 92 mSDtfsCounter, 114 mSDsluCounter, 243 mSDsCounter, 0 mSdLazyCounter, 503 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 115 SdHoareTripleChecker+Valid, 335 SdHoareTripleChecker+Invalid, 791 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 503 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 271 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-11-24 21:54:15,066 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [115 Valid, 335 Invalid, 791 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 503 Invalid, 0 Unknown, 271 Unchecked, 1.2s Time] [2023-11-24 21:54:15,070 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 241 states. [2023-11-24 21:54:15,077 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 241 to 196. [2023-11-24 21:54:15,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 196 states, 115 states have (on average 1.8521739130434782) internal successors, (213), 179 states have internal predecessors, (213), 9 states have call successors, (9), 7 states have call predecessors, (9), 8 states have return successors, (12), 9 states have call predecessors, (12), 9 states have call successors, (12) [2023-11-24 21:54:15,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 196 states to 196 states and 234 transitions. [2023-11-24 21:54:15,080 INFO L78 Accepts]: Start accepts. Automaton has 196 states and 234 transitions. Word has length 26 [2023-11-24 21:54:15,080 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 21:54:15,080 INFO L495 AbstractCegarLoop]: Abstraction has 196 states and 234 transitions. [2023-11-24 21:54:15,081 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 4 states have (on average 5.0) internal successors, (20), 6 states have internal predecessors, (20), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-11-24 21:54:15,082 INFO L276 IsEmpty]: Start isEmpty. Operand 196 states and 234 transitions. [2023-11-24 21:54:15,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2023-11-24 21:54:15,085 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 21:54:15,085 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 21:54:15,089 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ff601a-eb58-42e5-bfe3-252a6f671c11/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2023-11-24 21:54:15,289 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ff601a-eb58-42e5-bfe3-252a6f671c11/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-24 21:54:15,290 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr32ASSERT_VIOLATIONMEMORY_FREE === [free_reportsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 76 more)] === [2023-11-24 21:54:15,290 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:54:15,290 INFO L85 PathProgramCache]: Analyzing trace with hash 344393844, now seen corresponding path program 1 times [2023-11-24 21:54:15,291 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-24 21:54:15,291 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [807956660] [2023-11-24 21:54:15,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:54:15,291 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 [2023-11-24 21:54:15,291 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ff601a-eb58-42e5-bfe3-252a6f671c11/bin/uautomizer-verify-NlZe1sFDwI/mathsat [2023-11-24 21:54:15,292 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ff601a-eb58-42e5-bfe3-252a6f671c11/bin/uautomizer-verify-NlZe1sFDwI/mathsat -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) [2023-11-24 21:54:15,294 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ff601a-eb58-42e5-bfe3-252a6f671c11/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2023-11-24 21:54:15,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:54:15,472 INFO L262 TraceCheckSpWp]: Trace formula consists of 185 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-24 21:54:15,474 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 21:54:15,885 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:54:15,886 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 21:54:15,886 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-24 21:54:15,886 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [807956660] [2023-11-24 21:54:15,886 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [807956660] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:54:15,886 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:54:15,886 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-24 21:54:15,886 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [756033304] [2023-11-24 21:54:15,886 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:54:15,887 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-24 21:54:15,887 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-24 21:54:15,887 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-24 21:54:15,887 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-11-24 21:54:15,888 INFO L87 Difference]: Start difference. First operand 196 states and 234 transitions. Second operand has 7 states, 5 states have (on average 4.6) internal successors, (23), 5 states have internal predecessors, (23), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-11-24 21:54:16,764 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 21:54:16,764 INFO L93 Difference]: Finished difference Result 194 states and 231 transitions. [2023-11-24 21:54:16,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-24 21:54:16,765 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 4.6) internal successors, (23), 5 states have internal predecessors, (23), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 29 [2023-11-24 21:54:16,765 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 21:54:16,767 INFO L225 Difference]: With dead ends: 194 [2023-11-24 21:54:16,767 INFO L226 Difference]: Without dead ends: 194 [2023-11-24 21:54:16,767 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-11-24 21:54:16,768 INFO L413 NwaCegarLoop]: 127 mSDtfsCounter, 330 mSDsluCounter, 288 mSDsCounter, 0 mSdLazyCounter, 183 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 333 SdHoareTripleChecker+Valid, 415 SdHoareTripleChecker+Invalid, 198 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 183 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-11-24 21:54:16,768 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [333 Valid, 415 Invalid, 198 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 183 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-11-24 21:54:16,769 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 194 states. [2023-11-24 21:54:16,773 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 194 to 194. [2023-11-24 21:54:16,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 194 states, 115 states have (on average 1.826086956521739) internal successors, (210), 177 states have internal predecessors, (210), 9 states have call successors, (9), 7 states have call predecessors, (9), 8 states have return successors, (12), 9 states have call predecessors, (12), 9 states have call successors, (12) [2023-11-24 21:54:16,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 194 states to 194 states and 231 transitions. [2023-11-24 21:54:16,775 INFO L78 Accepts]: Start accepts. Automaton has 194 states and 231 transitions. Word has length 29 [2023-11-24 21:54:16,776 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 21:54:16,776 INFO L495 AbstractCegarLoop]: Abstraction has 194 states and 231 transitions. [2023-11-24 21:54:16,776 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 4.6) internal successors, (23), 5 states have internal predecessors, (23), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-11-24 21:54:16,776 INFO L276 IsEmpty]: Start isEmpty. Operand 194 states and 231 transitions. [2023-11-24 21:54:16,776 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2023-11-24 21:54:16,776 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 21:54:16,777 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 21:54:16,787 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ff601a-eb58-42e5-bfe3-252a6f671c11/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2023-11-24 21:54:16,980 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ff601a-eb58-42e5-bfe3-252a6f671c11/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-24 21:54:16,980 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONARRAY_INDEX === [free_reportsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 76 more)] === [2023-11-24 21:54:16,981 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:54:16,981 INFO L85 PathProgramCache]: Analyzing trace with hash 344393656, now seen corresponding path program 1 times [2023-11-24 21:54:16,981 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-24 21:54:16,981 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1532480570] [2023-11-24 21:54:16,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:54:16,981 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 [2023-11-24 21:54:16,982 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ff601a-eb58-42e5-bfe3-252a6f671c11/bin/uautomizer-verify-NlZe1sFDwI/mathsat [2023-11-24 21:54:16,982 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ff601a-eb58-42e5-bfe3-252a6f671c11/bin/uautomizer-verify-NlZe1sFDwI/mathsat -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) [2023-11-24 21:54:16,984 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ff601a-eb58-42e5-bfe3-252a6f671c11/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2023-11-24 21:54:17,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:54:17,160 INFO L262 TraceCheckSpWp]: Trace formula consists of 189 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-24 21:54:17,162 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 21:54:17,184 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:54:17,185 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 21:54:17,185 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-24 21:54:17,185 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1532480570] [2023-11-24 21:54:17,185 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1532480570] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:54:17,185 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:54:17,185 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-24 21:54:17,185 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1976437926] [2023-11-24 21:54:17,186 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:54:17,186 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-24 21:54:17,186 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-24 21:54:17,186 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-24 21:54:17,187 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-24 21:54:17,187 INFO L87 Difference]: Start difference. First operand 194 states and 231 transitions. Second operand has 4 states, 4 states have (on average 5.75) internal successors, (23), 4 states have internal predecessors, (23), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2023-11-24 21:54:17,459 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 21:54:17,459 INFO L93 Difference]: Finished difference Result 233 states and 273 transitions. [2023-11-24 21:54:17,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-24 21:54:17,460 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.75) internal successors, (23), 4 states have internal predecessors, (23), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 29 [2023-11-24 21:54:17,460 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 21:54:17,462 INFO L225 Difference]: With dead ends: 233 [2023-11-24 21:54:17,462 INFO L226 Difference]: Without dead ends: 233 [2023-11-24 21:54:17,462 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-24 21:54:17,463 INFO L413 NwaCegarLoop]: 144 mSDtfsCounter, 34 mSDsluCounter, 285 mSDsCounter, 0 mSdLazyCounter, 80 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 429 SdHoareTripleChecker+Invalid, 80 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 80 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-24 21:54:17,463 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 429 Invalid, 80 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 80 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-24 21:54:17,464 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 233 states. [2023-11-24 21:54:17,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 233 to 198. [2023-11-24 21:54:17,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 198 states, 119 states have (on average 1.7983193277310925) internal successors, (214), 181 states have internal predecessors, (214), 9 states have call successors, (9), 7 states have call predecessors, (9), 8 states have return successors, (12), 9 states have call predecessors, (12), 9 states have call successors, (12) [2023-11-24 21:54:17,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 198 states to 198 states and 235 transitions. [2023-11-24 21:54:17,471 INFO L78 Accepts]: Start accepts. Automaton has 198 states and 235 transitions. Word has length 29 [2023-11-24 21:54:17,471 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 21:54:17,471 INFO L495 AbstractCegarLoop]: Abstraction has 198 states and 235 transitions. [2023-11-24 21:54:17,471 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.75) internal successors, (23), 4 states have internal predecessors, (23), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2023-11-24 21:54:17,471 INFO L276 IsEmpty]: Start isEmpty. Operand 198 states and 235 transitions. [2023-11-24 21:54:17,472 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2023-11-24 21:54:17,472 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 21:54:17,472 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 21:54:17,480 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ff601a-eb58-42e5-bfe3-252a6f671c11/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2023-11-24 21:54:17,675 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ff601a-eb58-42e5-bfe3-252a6f671c11/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-24 21:54:17,676 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONARRAY_INDEX === [free_reportsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 76 more)] === [2023-11-24 21:54:17,676 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:54:17,676 INFO L85 PathProgramCache]: Analyzing trace with hash 975513856, now seen corresponding path program 1 times [2023-11-24 21:54:17,676 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-24 21:54:17,677 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2010837018] [2023-11-24 21:54:17,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:54:17,677 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 [2023-11-24 21:54:17,677 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ff601a-eb58-42e5-bfe3-252a6f671c11/bin/uautomizer-verify-NlZe1sFDwI/mathsat [2023-11-24 21:54:17,678 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ff601a-eb58-42e5-bfe3-252a6f671c11/bin/uautomizer-verify-NlZe1sFDwI/mathsat -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) [2023-11-24 21:54:17,714 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ff601a-eb58-42e5-bfe3-252a6f671c11/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2023-11-24 21:54:18,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:54:18,047 INFO L262 TraceCheckSpWp]: Trace formula consists of 277 conjuncts, 14 conjunts are in the unsatisfiable core [2023-11-24 21:54:18,050 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 21:54:18,095 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:54:18,096 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:54:18,098 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:54:18,099 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-24 21:54:18,100 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-24 21:54:18,101 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-24 21:54:18,104 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 39 [2023-11-24 21:54:18,207 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:54:18,209 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:54:18,210 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:54:18,211 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:54:18,213 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:54:18,214 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:54:18,218 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:54:18,224 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 28 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 86 treesize of output 61 [2023-11-24 21:54:18,766 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:54:18,768 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:54:18,770 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:54:18,771 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:54:18,773 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:54:18,774 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:54:18,776 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:54:18,780 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 28 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 71 treesize of output 91 [2023-11-24 21:54:22,066 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-24 21:54:22,066 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 116 treesize of output 133 [2023-11-24 21:54:29,151 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-24 21:54:29,151 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 11 select indices, 11 select index equivalence classes, 0 disjoint index pairs (out of 55 index pairs), introduced 11 new quantified variables, introduced 55 case distinctions, treesize of input 140 treesize of output 54 [2023-11-24 21:54:29,185 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:54:29,185 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 21:54:29,185 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-24 21:54:29,186 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2010837018] [2023-11-24 21:54:29,186 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2010837018] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:54:29,186 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:54:29,186 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-24 21:54:29,186 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [338505175] [2023-11-24 21:54:29,186 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:54:29,187 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-24 21:54:29,187 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-24 21:54:29,187 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-24 21:54:29,188 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=25, Unknown=3, NotChecked=0, Total=42 [2023-11-24 21:54:29,188 INFO L87 Difference]: Start difference. First operand 198 states and 235 transitions. Second operand has 7 states, 6 states have (on average 4.5) internal successors, (27), 7 states have internal predecessors, (27), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2023-11-24 21:54:33,422 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-24 21:54:37,426 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-24 21:54:41,500 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-24 21:54:45,507 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0]