./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/ldv-memsafety/memleaks_test23_2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f78c4f18-373c-4795-9570-7a4d1b5991b2/bin/uautomizer-verify-NlZe1sFDwI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f78c4f18-373c-4795-9570-7a4d1b5991b2/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_f78c4f18-373c-4795-9570-7a4d1b5991b2/bin/uautomizer-verify-NlZe1sFDwI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f78c4f18-373c-4795-9570-7a4d1b5991b2/bin/uautomizer-verify-NlZe1sFDwI/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/ldv-memsafety/memleaks_test23_2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f78c4f18-373c-4795-9570-7a4d1b5991b2/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_f78c4f18-373c-4795-9570-7a4d1b5991b2/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 8821dcf0dd649f568f6a7cfce8600f412ab79c37bc3c7c7e65db385cdb052111 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-24 21:56:46,067 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-24 21:56:46,177 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f78c4f18-373c-4795-9570-7a4d1b5991b2/bin/uautomizer-verify-NlZe1sFDwI/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2023-11-24 21:56:46,183 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-24 21:56:46,184 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-24 21:56:46,211 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-24 21:56:46,212 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-24 21:56:46,212 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-24 21:56:46,213 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-24 21:56:46,214 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-24 21:56:46,214 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-24 21:56:46,215 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-24 21:56:46,216 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-24 21:56:46,217 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-24 21:56:46,217 INFO L153 SettingsManager]: * Use SBE=true [2023-11-24 21:56:46,218 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-24 21:56:46,218 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-24 21:56:46,219 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-24 21:56:46,220 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-24 21:56:46,220 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-24 21:56:46,221 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-24 21:56:46,233 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-24 21:56:46,233 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-24 21:56:46,234 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-24 21:56:46,234 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-24 21:56:46,235 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-24 21:56:46,235 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-24 21:56:46,236 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-24 21:56:46,236 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-24 21:56:46,237 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-24 21:56:46,237 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-24 21:56:46,238 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-24 21:56:46,239 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-24 21:56:46,240 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-24 21:56:46,240 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-24 21:56:46,240 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-24 21:56:46,240 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-24 21:56:46,241 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-24 21:56:46,241 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-24 21:56:46,241 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-24 21:56:46,242 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-24 21:56:46,242 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_f78c4f18-373c-4795-9570-7a4d1b5991b2/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f78c4f18-373c-4795-9570-7a4d1b5991b2/bin/uautomizer-verify-NlZe1sFDwI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8821dcf0dd649f568f6a7cfce8600f412ab79c37bc3c7c7e65db385cdb052111 [2023-11-24 21:56:46,553 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-24 21:56:46,587 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-24 21:56:46,590 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-24 21:56:46,592 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-24 21:56:46,593 INFO L274 PluginConnector]: CDTParser initialized [2023-11-24 21:56:46,594 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f78c4f18-373c-4795-9570-7a4d1b5991b2/bin/uautomizer-verify-NlZe1sFDwI/../../sv-benchmarks/c/ldv-memsafety/memleaks_test23_2.i [2023-11-24 21:56:49,769 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-24 21:56:50,099 INFO L384 CDTParser]: Found 1 translation units. [2023-11-24 21:56:50,099 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f78c4f18-373c-4795-9570-7a4d1b5991b2/sv-benchmarks/c/ldv-memsafety/memleaks_test23_2.i [2023-11-24 21:56:50,124 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f78c4f18-373c-4795-9570-7a4d1b5991b2/bin/uautomizer-verify-NlZe1sFDwI/data/b7316f9ab/abe400a71a7f42a7ac3be6ee2325d7c0/FLAG9c1e6a9ae [2023-11-24 21:56:50,149 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f78c4f18-373c-4795-9570-7a4d1b5991b2/bin/uautomizer-verify-NlZe1sFDwI/data/b7316f9ab/abe400a71a7f42a7ac3be6ee2325d7c0 [2023-11-24 21:56:50,151 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-24 21:56:50,153 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-24 21:56:50,154 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-24 21:56:50,154 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-24 21:56:50,162 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-24 21:56:50,165 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 09:56:50" (1/1) ... [2023-11-24 21:56:50,166 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4af1a680 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:56:50, skipping insertion in model container [2023-11-24 21:56:50,167 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 09:56:50" (1/1) ... [2023-11-24 21:56:50,219 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-24 21:56:50,770 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-24 21:56:50,797 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 21:56:50,797 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@779ebaf9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:56:50, skipping insertion in model container [2023-11-24 21:56:50,798 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-24 21:56:50,798 INFO L186 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2023-11-24 21:56:50,800 INFO L158 Benchmark]: Toolchain (without parser) took 646.26ms. Allocated memory is still 157.3MB. Free memory was 123.3MB in the beginning and 108.1MB in the end (delta: 15.2MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2023-11-24 21:56:50,801 INFO L158 Benchmark]: CDTParser took 0.34ms. Allocated memory is still 157.3MB. Free memory was 116.2MB in the beginning and 116.0MB in the end (delta: 167.9kB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-24 21:56:50,802 INFO L158 Benchmark]: CACSL2BoogieTranslator took 643.87ms. Allocated memory is still 157.3MB. Free memory was 123.3MB in the beginning and 108.4MB in the end (delta: 15.0MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2023-11-24 21:56:50,804 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.34ms. Allocated memory is still 157.3MB. Free memory was 116.2MB in the beginning and 116.0MB in the end (delta: 167.9kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 643.87ms. Allocated memory is still 157.3MB. Free memory was 123.3MB in the beginning and 108.4MB in the end (delta: 15.0MB). 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_f78c4f18-373c-4795-9570-7a4d1b5991b2/bin/uautomizer-verify-NlZe1sFDwI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f78c4f18-373c-4795-9570-7a4d1b5991b2/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_f78c4f18-373c-4795-9570-7a4d1b5991b2/bin/uautomizer-verify-NlZe1sFDwI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f78c4f18-373c-4795-9570-7a4d1b5991b2/bin/uautomizer-verify-NlZe1sFDwI/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/ldv-memsafety/memleaks_test23_2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f78c4f18-373c-4795-9570-7a4d1b5991b2/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_f78c4f18-373c-4795-9570-7a4d1b5991b2/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 8821dcf0dd649f568f6a7cfce8600f412ab79c37bc3c7c7e65db385cdb052111 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-24 21:56:53,419 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-24 21:56:53,554 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f78c4f18-373c-4795-9570-7a4d1b5991b2/bin/uautomizer-verify-NlZe1sFDwI/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2023-11-24 21:56:53,563 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-24 21:56:53,567 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-24 21:56:53,613 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-24 21:56:53,614 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-24 21:56:53,615 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-24 21:56:53,617 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-24 21:56:53,622 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-24 21:56:53,623 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-24 21:56:53,623 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-24 21:56:53,624 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-24 21:56:53,626 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-24 21:56:53,626 INFO L153 SettingsManager]: * Use SBE=true [2023-11-24 21:56:53,627 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-24 21:56:53,628 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-24 21:56:53,628 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-24 21:56:53,629 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-24 21:56:53,629 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-24 21:56:53,630 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-24 21:56:53,630 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-24 21:56:53,631 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-24 21:56:53,631 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-24 21:56:53,632 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-24 21:56:53,632 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-11-24 21:56:53,633 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-11-24 21:56:53,633 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-24 21:56:53,634 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-24 21:56:53,634 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-24 21:56:53,636 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-24 21:56:53,637 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-24 21:56:53,637 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-24 21:56:53,637 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-24 21:56:53,638 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-24 21:56:53,638 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-24 21:56:53,639 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-24 21:56:53,639 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-11-24 21:56:53,640 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-11-24 21:56:53,640 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-24 21:56:53,640 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-24 21:56:53,641 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-24 21:56:53,641 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-24 21:56:53,641 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-11-24 21:56:53,642 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_f78c4f18-373c-4795-9570-7a4d1b5991b2/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f78c4f18-373c-4795-9570-7a4d1b5991b2/bin/uautomizer-verify-NlZe1sFDwI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8821dcf0dd649f568f6a7cfce8600f412ab79c37bc3c7c7e65db385cdb052111 [2023-11-24 21:56:54,098 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-24 21:56:54,133 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-24 21:56:54,137 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-24 21:56:54,138 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-24 21:56:54,139 INFO L274 PluginConnector]: CDTParser initialized [2023-11-24 21:56:54,140 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f78c4f18-373c-4795-9570-7a4d1b5991b2/bin/uautomizer-verify-NlZe1sFDwI/../../sv-benchmarks/c/ldv-memsafety/memleaks_test23_2.i [2023-11-24 21:56:57,281 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-24 21:56:57,616 INFO L384 CDTParser]: Found 1 translation units. [2023-11-24 21:56:57,616 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f78c4f18-373c-4795-9570-7a4d1b5991b2/sv-benchmarks/c/ldv-memsafety/memleaks_test23_2.i [2023-11-24 21:56:57,634 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f78c4f18-373c-4795-9570-7a4d1b5991b2/bin/uautomizer-verify-NlZe1sFDwI/data/b3baad21d/11fe73f4d6b142e38ffcc527f68edb36/FLAG3b5cceb76 [2023-11-24 21:56:57,654 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f78c4f18-373c-4795-9570-7a4d1b5991b2/bin/uautomizer-verify-NlZe1sFDwI/data/b3baad21d/11fe73f4d6b142e38ffcc527f68edb36 [2023-11-24 21:56:57,656 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-24 21:56:57,658 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-24 21:56:57,659 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-24 21:56:57,659 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-24 21:56:57,665 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-24 21:56:57,665 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 09:56:57" (1/1) ... [2023-11-24 21:56:57,666 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@60e31293 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:56:57, skipping insertion in model container [2023-11-24 21:56:57,667 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 09:56:57" (1/1) ... [2023-11-24 21:56:57,720 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-24 21:56:58,335 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-24 21:56:58,366 INFO L199 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2023-11-24 21:56:58,389 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-24 21:56:58,521 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-24 21:56:58,536 INFO L202 MainTranslator]: Completed pre-run [2023-11-24 21:56:58,620 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-24 21:56:58,695 WARN L675 CHandler]: The function release is called, but not defined or handled by StandardFunctionHandler. [2023-11-24 21:56:58,703 INFO L206 MainTranslator]: Completed translation [2023-11-24 21:56:58,704 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:56:58 WrapperNode [2023-11-24 21:56:58,704 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-24 21:56:58,705 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-24 21:56:58,705 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-24 21:56:58,706 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-24 21:56:58,714 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:56:58" (1/1) ... [2023-11-24 21:56:58,754 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:56:58" (1/1) ... [2023-11-24 21:56:58,806 INFO L138 Inliner]: procedures = 175, calls = 119, calls flagged for inlining = 30, calls inlined = 15, statements flattened = 199 [2023-11-24 21:56:58,807 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-24 21:56:58,808 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-24 21:56:58,808 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-24 21:56:58,808 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-24 21:56:58,821 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:56:58" (1/1) ... [2023-11-24 21:56:58,821 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:56:58" (1/1) ... [2023-11-24 21:56:58,840 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:56:58" (1/1) ... [2023-11-24 21:56:58,879 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 21:56:58,879 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:56:58" (1/1) ... [2023-11-24 21:56:58,879 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:56:58" (1/1) ... [2023-11-24 21:56:58,899 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:56:58" (1/1) ... [2023-11-24 21:56:58,914 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:56:58" (1/1) ... [2023-11-24 21:56:58,921 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:56:58" (1/1) ... [2023-11-24 21:56:58,931 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:56:58" (1/1) ... [2023-11-24 21:56:58,937 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-24 21:56:58,942 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-24 21:56:58,943 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-24 21:56:58,943 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-24 21:56:58,944 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:56:58" (1/1) ... [2023-11-24 21:56:58,949 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-24 21:56:58,962 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f78c4f18-373c-4795-9570-7a4d1b5991b2/bin/uautomizer-verify-NlZe1sFDwI/z3 [2023-11-24 21:56:58,977 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f78c4f18-373c-4795-9570-7a4d1b5991b2/bin/uautomizer-verify-NlZe1sFDwI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-24 21:56:58,981 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f78c4f18-373c-4795-9570-7a4d1b5991b2/bin/uautomizer-verify-NlZe1sFDwI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-24 21:56:59,013 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#0 [2023-11-24 21:56:59,014 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#1 [2023-11-24 21:56:59,014 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#2 [2023-11-24 21:56:59,015 INFO L130 BoogieDeclarations]: Found specification of procedure LDV_INIT_LIST_HEAD [2023-11-24 21:56:59,015 INFO L138 BoogieDeclarations]: Found implementation of procedure LDV_INIT_LIST_HEAD [2023-11-24 21:56:59,016 INFO L130 BoogieDeclarations]: Found specification of procedure __ldv_list_add [2023-11-24 21:56:59,017 INFO L138 BoogieDeclarations]: Found implementation of procedure __ldv_list_add [2023-11-24 21:56:59,018 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2023-11-24 21:56:59,018 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2023-11-24 21:56:59,018 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-24 21:56:59,018 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-24 21:56:59,018 INFO L130 BoogieDeclarations]: Found specification of procedure free_reports [2023-11-24 21:56:59,019 INFO L138 BoogieDeclarations]: Found implementation of procedure free_reports [2023-11-24 21:56:59,019 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-24 21:56:59,019 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2023-11-24 21:56:59,020 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2023-11-24 21:56:59,021 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2023-11-24 21:56:59,021 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2023-11-24 21:56:59,021 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2023-11-24 21:56:59,021 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2023-11-24 21:56:59,022 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#0 [2023-11-24 21:56:59,023 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#1 [2023-11-24 21:56:59,023 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#2 [2023-11-24 21:56:59,023 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-24 21:56:59,023 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#0 [2023-11-24 21:56:59,024 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#1 [2023-11-24 21:56:59,025 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#2 [2023-11-24 21:56:59,025 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_list_del [2023-11-24 21:56:59,025 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_list_del [2023-11-24 21:56:59,025 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2023-11-24 21:56:59,025 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2023-11-24 21:56:59,026 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-24 21:56:59,026 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-24 21:56:59,301 INFO L241 CfgBuilder]: Building ICFG [2023-11-24 21:56:59,303 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-24 21:57:00,267 INFO L282 CfgBuilder]: Performing block encoding [2023-11-24 21:57:00,348 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-24 21:57:00,348 INFO L309 CfgBuilder]: Removed 2 assume(true) statements. [2023-11-24 21:57:00,349 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 09:57:00 BoogieIcfgContainer [2023-11-24 21:57:00,349 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-24 21:57:00,351 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-24 21:57:00,352 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-24 21:57:00,355 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-24 21:57:00,355 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.11 09:56:57" (1/3) ... [2023-11-24 21:57:00,356 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@60ca5900 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 09:57:00, skipping insertion in model container [2023-11-24 21:57:00,356 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:56:58" (2/3) ... [2023-11-24 21:57:00,357 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@60ca5900 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 09:57:00, skipping insertion in model container [2023-11-24 21:57:00,357 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 09:57:00" (3/3) ... [2023-11-24 21:57:00,358 INFO L112 eAbstractionObserver]: Analyzing ICFG memleaks_test23_2.i [2023-11-24 21:57:00,379 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-24 21:57:00,379 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 79 error locations. [2023-11-24 21:57:00,430 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-24 21:57:00,436 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;@77b555df, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-24 21:57:00,436 INFO L358 AbstractCegarLoop]: Starting to check reachability of 79 error locations. [2023-11-24 21:57:00,441 INFO L276 IsEmpty]: Start isEmpty. Operand has 176 states, 82 states have (on average 2.1341463414634148) internal successors, (175), 161 states have internal predecessors, (175), 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 21:57:00,450 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2023-11-24 21:57:00,450 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 21:57:00,451 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 21:57:00,451 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 21:57:00,457 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:57:00,457 INFO L85 PathProgramCache]: Analyzing trace with hash 2024019979, now seen corresponding path program 1 times [2023-11-24 21:57:00,471 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-24 21:57:00,471 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [998765304] [2023-11-24 21:57:00,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:57:00,472 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 21:57:00,472 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f78c4f18-373c-4795-9570-7a4d1b5991b2/bin/uautomizer-verify-NlZe1sFDwI/mathsat [2023-11-24 21:57:00,476 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f78c4f18-373c-4795-9570-7a4d1b5991b2/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 21:57:00,511 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f78c4f18-373c-4795-9570-7a4d1b5991b2/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 21:57:00,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:57:00,632 INFO L262 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-24 21:57:00,648 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 21:57:00,735 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 21:57:00,819 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 21:57:00,819 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 21:57:00,820 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-24 21:57:00,821 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [998765304] [2023-11-24 21:57:00,821 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [998765304] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:57:00,822 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:57:00,823 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-24 21:57:00,825 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1821468834] [2023-11-24 21:57:00,825 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:57:00,830 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-24 21:57:00,831 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-24 21:57:00,863 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-24 21:57:00,864 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-24 21:57:00,867 INFO L87 Difference]: Start difference. First operand has 176 states, 82 states have (on average 2.1341463414634148) internal successors, (175), 161 states have internal predecessors, (175), 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 21:57:02,078 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 21:57:02,078 INFO L93 Difference]: Finished difference Result 191 states and 206 transitions. [2023-11-24 21:57:02,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-24 21:57:02,081 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 21:57:02,082 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 21:57:02,092 INFO L225 Difference]: With dead ends: 191 [2023-11-24 21:57:02,093 INFO L226 Difference]: Without dead ends: 190 [2023-11-24 21:57:02,094 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 21:57:02,098 INFO L413 NwaCegarLoop]: 154 mSDtfsCounter, 14 mSDsluCounter, 491 mSDsCounter, 0 mSdLazyCounter, 479 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 645 SdHoareTripleChecker+Invalid, 483 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 479 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-11-24 21:57:02,100 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 645 Invalid, 483 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 479 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-11-24 21:57:02,118 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 190 states. [2023-11-24 21:57:02,146 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 190 to 183. [2023-11-24 21:57:02,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 183 states, 88 states have (on average 2.0454545454545454) internal successors, (180), 166 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 21:57:02,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 183 states to 183 states and 199 transitions. [2023-11-24 21:57:02,153 INFO L78 Accepts]: Start accepts. Automaton has 183 states and 199 transitions. Word has length 11 [2023-11-24 21:57:02,153 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 21:57:02,154 INFO L495 AbstractCegarLoop]: Abstraction has 183 states and 199 transitions. [2023-11-24 21:57:02,154 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 21:57:02,154 INFO L276 IsEmpty]: Start isEmpty. Operand 183 states and 199 transitions. [2023-11-24 21:57:02,155 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2023-11-24 21:57:02,155 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 21:57:02,155 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 21:57:02,164 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f78c4f18-373c-4795-9570-7a4d1b5991b2/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)] Ended with exit code 0 [2023-11-24 21:57:02,358 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f78c4f18-373c-4795-9570-7a4d1b5991b2/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 21:57:02,359 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 21:57:02,359 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:57:02,360 INFO L85 PathProgramCache]: Analyzing trace with hash 2024019980, now seen corresponding path program 1 times [2023-11-24 21:57:02,360 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-24 21:57:02,361 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1994319934] [2023-11-24 21:57:02,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:57:02,361 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 21:57:02,361 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f78c4f18-373c-4795-9570-7a4d1b5991b2/bin/uautomizer-verify-NlZe1sFDwI/mathsat [2023-11-24 21:57:02,363 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f78c4f18-373c-4795-9570-7a4d1b5991b2/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 21:57:02,368 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f78c4f18-373c-4795-9570-7a4d1b5991b2/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 21:57:02,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:57:02,461 INFO L262 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 14 conjunts are in the unsatisfiable core [2023-11-24 21:57:02,463 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 21:57:02,481 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 21:57:02,630 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 21:57:02,630 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 21:57:02,631 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-24 21:57:02,631 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1994319934] [2023-11-24 21:57:02,631 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1994319934] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:57:02,631 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:57:02,631 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-24 21:57:02,632 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1286172091] [2023-11-24 21:57:02,632 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:57:02,633 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-24 21:57:02,633 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-24 21:57:02,634 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-24 21:57:02,635 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-11-24 21:57:02,635 INFO L87 Difference]: Start difference. First operand 183 states and 199 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 21:57:03,855 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 21:57:03,855 INFO L93 Difference]: Finished difference Result 187 states and 201 transitions. [2023-11-24 21:57:03,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-24 21:57:03,858 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 21:57:03,859 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 21:57:03,860 INFO L225 Difference]: With dead ends: 187 [2023-11-24 21:57:03,860 INFO L226 Difference]: Without dead ends: 187 [2023-11-24 21:57:03,861 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 21:57:03,862 INFO L413 NwaCegarLoop]: 154 mSDtfsCounter, 12 mSDsluCounter, 694 mSDsCounter, 0 mSdLazyCounter, 456 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 848 SdHoareTripleChecker+Invalid, 457 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 456 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-11-24 21:57:03,862 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 848 Invalid, 457 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 456 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-11-24 21:57:03,864 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 187 states. [2023-11-24 21:57:03,879 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 187 to 183. [2023-11-24 21:57:03,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 183 states, 88 states have (on average 2.022727272727273) internal successors, (178), 166 states have internal predecessors, (178), 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 21:57:03,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 183 states to 183 states and 197 transitions. [2023-11-24 21:57:03,888 INFO L78 Accepts]: Start accepts. Automaton has 183 states and 197 transitions. Word has length 11 [2023-11-24 21:57:03,893 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 21:57:03,893 INFO L495 AbstractCegarLoop]: Abstraction has 183 states and 197 transitions. [2023-11-24 21:57:03,893 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 21:57:03,894 INFO L276 IsEmpty]: Start isEmpty. Operand 183 states and 197 transitions. [2023-11-24 21:57:03,894 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2023-11-24 21:57:03,894 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 21:57:03,895 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 21:57:03,905 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f78c4f18-373c-4795-9570-7a4d1b5991b2/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 21:57:04,097 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f78c4f18-373c-4795-9570-7a4d1b5991b2/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 21:57:04,097 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 21:57:04,098 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:57:04,098 INFO L85 PathProgramCache]: Analyzing trace with hash -528136982, now seen corresponding path program 1 times [2023-11-24 21:57:04,098 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-24 21:57:04,099 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1814207826] [2023-11-24 21:57:04,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:57:04,099 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 21:57:04,099 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f78c4f18-373c-4795-9570-7a4d1b5991b2/bin/uautomizer-verify-NlZe1sFDwI/mathsat [2023-11-24 21:57:04,100 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f78c4f18-373c-4795-9570-7a4d1b5991b2/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 21:57:04,102 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f78c4f18-373c-4795-9570-7a4d1b5991b2/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 21:57:04,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:57:04,224 INFO L262 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-24 21:57:04,226 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 21:57:04,284 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 21:57:04,285 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 21:57:04,285 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-24 21:57:04,285 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1814207826] [2023-11-24 21:57:04,285 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1814207826] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:57:04,286 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:57:04,286 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-24 21:57:04,286 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1745925882] [2023-11-24 21:57:04,286 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:57:04,287 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-24 21:57:04,287 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-24 21:57:04,287 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-24 21:57:04,288 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-24 21:57:04,288 INFO L87 Difference]: Start difference. First operand 183 states and 197 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 21:57:04,670 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 21:57:04,670 INFO L93 Difference]: Finished difference Result 176 states and 189 transitions. [2023-11-24 21:57:04,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-24 21:57:04,673 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 21:57:04,673 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 21:57:04,675 INFO L225 Difference]: With dead ends: 176 [2023-11-24 21:57:04,675 INFO L226 Difference]: Without dead ends: 176 [2023-11-24 21:57:04,675 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 21:57:04,676 INFO L413 NwaCegarLoop]: 162 mSDtfsCounter, 0 mSDsluCounter, 470 mSDsCounter, 0 mSdLazyCounter, 114 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 632 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 21:57:04,677 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 632 Invalid, 115 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 114 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-24 21:57:04,678 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 176 states. [2023-11-24 21:57:04,687 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 176 to 175. [2023-11-24 21:57:04,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 175 states, 85 states have (on average 2.011764705882353) internal successors, (171), 159 states have internal predecessors, (171), 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 21:57:04,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175 states to 175 states and 188 transitions. [2023-11-24 21:57:04,689 INFO L78 Accepts]: Start accepts. Automaton has 175 states and 188 transitions. Word has length 11 [2023-11-24 21:57:04,689 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 21:57:04,689 INFO L495 AbstractCegarLoop]: Abstraction has 175 states and 188 transitions. [2023-11-24 21:57:04,690 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 21:57:04,690 INFO L276 IsEmpty]: Start isEmpty. Operand 175 states and 188 transitions. [2023-11-24 21:57:04,705 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2023-11-24 21:57:04,705 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 21:57:04,705 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 21:57:04,712 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f78c4f18-373c-4795-9570-7a4d1b5991b2/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)] Ended with exit code 0 [2023-11-24 21:57:04,907 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f78c4f18-373c-4795-9570-7a4d1b5991b2/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 21:57:04,908 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 21:57:04,909 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:57:04,909 INFO L85 PathProgramCache]: Analyzing trace with hash 2023934059, now seen corresponding path program 1 times [2023-11-24 21:57:04,909 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-24 21:57:04,909 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1075203091] [2023-11-24 21:57:04,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:57:04,910 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 21:57:04,910 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f78c4f18-373c-4795-9570-7a4d1b5991b2/bin/uautomizer-verify-NlZe1sFDwI/mathsat [2023-11-24 21:57:04,913 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f78c4f18-373c-4795-9570-7a4d1b5991b2/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 21:57:04,918 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f78c4f18-373c-4795-9570-7a4d1b5991b2/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 21:57:05,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:57:05,007 INFO L262 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-24 21:57:05,008 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 21:57:05,046 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 21:57:05,046 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 21:57:05,046 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-24 21:57:05,046 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1075203091] [2023-11-24 21:57:05,047 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1075203091] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:57:05,047 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:57:05,047 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-24 21:57:05,047 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [268685076] [2023-11-24 21:57:05,047 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:57:05,048 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-24 21:57:05,048 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-24 21:57:05,049 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-24 21:57:05,049 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-24 21:57:05,049 INFO L87 Difference]: Start difference. First operand 175 states and 188 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 21:57:05,381 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 21:57:05,381 INFO L93 Difference]: Finished difference Result 176 states and 188 transitions. [2023-11-24 21:57:05,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-24 21:57:05,383 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 21:57:05,383 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 21:57:05,385 INFO L225 Difference]: With dead ends: 176 [2023-11-24 21:57:05,385 INFO L226 Difference]: Without dead ends: 176 [2023-11-24 21:57:05,385 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 21:57:05,386 INFO L413 NwaCegarLoop]: 155 mSDtfsCounter, 94 mSDsluCounter, 377 mSDsCounter, 0 mSdLazyCounter, 108 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 99 SdHoareTripleChecker+Valid, 532 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 21:57:05,387 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [99 Valid, 532 Invalid, 108 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 108 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-24 21:57:05,388 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 176 states. [2023-11-24 21:57:05,399 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 176 to 175. [2023-11-24 21:57:05,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 175 states, 85 states have (on average 2.0) internal successors, (170), 159 states have internal predecessors, (170), 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 21:57:05,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175 states to 175 states and 187 transitions. [2023-11-24 21:57:05,401 INFO L78 Accepts]: Start accepts. Automaton has 175 states and 187 transitions. Word has length 11 [2023-11-24 21:57:05,401 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 21:57:05,401 INFO L495 AbstractCegarLoop]: Abstraction has 175 states and 187 transitions. [2023-11-24 21:57:05,402 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 21:57:05,402 INFO L276 IsEmpty]: Start isEmpty. Operand 175 states and 187 transitions. [2023-11-24 21:57:05,403 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2023-11-24 21:57:05,403 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 21:57:05,403 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 21:57:05,407 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f78c4f18-373c-4795-9570-7a4d1b5991b2/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)] Forceful destruction successful, exit code 0 [2023-11-24 21:57:05,605 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f78c4f18-373c-4795-9570-7a4d1b5991b2/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 21:57:05,606 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 21:57:05,606 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:57:05,607 INFO L85 PathProgramCache]: Analyzing trace with hash -528222902, now seen corresponding path program 1 times [2023-11-24 21:57:05,607 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-24 21:57:05,607 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [231491367] [2023-11-24 21:57:05,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:57:05,607 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 21:57:05,607 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f78c4f18-373c-4795-9570-7a4d1b5991b2/bin/uautomizer-verify-NlZe1sFDwI/mathsat [2023-11-24 21:57:05,609 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f78c4f18-373c-4795-9570-7a4d1b5991b2/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 21:57:05,613 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f78c4f18-373c-4795-9570-7a4d1b5991b2/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 21:57:05,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:57:05,691 INFO L262 TraceCheckSpWp]: Trace formula consists of 57 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-24 21:57:05,692 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 21:57:05,724 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 21:57:05,724 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 21:57:05,725 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-24 21:57:05,725 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [231491367] [2023-11-24 21:57:05,725 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [231491367] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:57:05,725 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:57:05,726 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-24 21:57:05,726 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [10651411] [2023-11-24 21:57:05,726 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:57:05,726 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-24 21:57:05,727 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-24 21:57:05,727 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-24 21:57:05,727 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-24 21:57:05,728 INFO L87 Difference]: Start difference. First operand 175 states and 187 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 21:57:06,061 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 21:57:06,061 INFO L93 Difference]: Finished difference Result 180 states and 191 transitions. [2023-11-24 21:57:06,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-24 21:57:06,062 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 21:57:06,062 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 21:57:06,063 INFO L225 Difference]: With dead ends: 180 [2023-11-24 21:57:06,064 INFO L226 Difference]: Without dead ends: 180 [2023-11-24 21:57:06,064 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 21:57:06,065 INFO L413 NwaCegarLoop]: 157 mSDtfsCounter, 91 mSDsluCounter, 385 mSDsCounter, 0 mSdLazyCounter, 99 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 96 SdHoareTripleChecker+Valid, 542 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 21:57:06,065 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [96 Valid, 542 Invalid, 99 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 99 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-24 21:57:06,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 180 states. [2023-11-24 21:57:06,074 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 180 to 177. [2023-11-24 21:57:06,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 177 states, 87 states have (on average 1.9770114942528736) internal successors, (172), 161 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 21:57:06,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177 states to 177 states and 189 transitions. [2023-11-24 21:57:06,076 INFO L78 Accepts]: Start accepts. Automaton has 177 states and 189 transitions. Word has length 11 [2023-11-24 21:57:06,076 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 21:57:06,077 INFO L495 AbstractCegarLoop]: Abstraction has 177 states and 189 transitions. [2023-11-24 21:57:06,077 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 21:57:06,077 INFO L276 IsEmpty]: Start isEmpty. Operand 177 states and 189 transitions. [2023-11-24 21:57:06,078 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2023-11-24 21:57:06,078 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 21:57:06,078 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 21:57:06,089 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f78c4f18-373c-4795-9570-7a4d1b5991b2/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)] Forceful destruction successful, exit code 0 [2023-11-24 21:57:06,289 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f78c4f18-373c-4795-9570-7a4d1b5991b2/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 21:57:06,289 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 21:57:06,290 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:57:06,290 INFO L85 PathProgramCache]: Analyzing trace with hash 804979335, now seen corresponding path program 1 times [2023-11-24 21:57:06,290 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-24 21:57:06,290 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [517851297] [2023-11-24 21:57:06,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:57:06,291 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 21:57:06,291 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f78c4f18-373c-4795-9570-7a4d1b5991b2/bin/uautomizer-verify-NlZe1sFDwI/mathsat [2023-11-24 21:57:06,292 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f78c4f18-373c-4795-9570-7a4d1b5991b2/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 21:57:06,326 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f78c4f18-373c-4795-9570-7a4d1b5991b2/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 21:57:06,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:57:06,374 INFO L262 TraceCheckSpWp]: Trace formula consists of 50 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-24 21:57:06,375 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 21:57:06,413 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 21:57:06,413 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 21:57:06,413 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-24 21:57:06,414 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [517851297] [2023-11-24 21:57:06,414 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [517851297] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:57:06,414 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:57:06,414 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-24 21:57:06,414 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [187328652] [2023-11-24 21:57:06,415 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:57:06,415 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-24 21:57:06,416 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-24 21:57:06,416 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-24 21:57:06,417 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-24 21:57:06,417 INFO L87 Difference]: Start difference. First operand 177 states and 189 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 21:57:07,021 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 21:57:07,021 INFO L93 Difference]: Finished difference Result 189 states and 203 transitions. [2023-11-24 21:57:07,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-24 21:57:07,022 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 21:57:07,022 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 21:57:07,023 INFO L225 Difference]: With dead ends: 189 [2023-11-24 21:57:07,024 INFO L226 Difference]: Without dead ends: 181 [2023-11-24 21:57:07,024 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 21:57:07,025 INFO L413 NwaCegarLoop]: 132 mSDtfsCounter, 44 mSDsluCounter, 167 mSDsCounter, 0 mSdLazyCounter, 211 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 299 SdHoareTripleChecker+Invalid, 219 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 211 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-24 21:57:07,025 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [45 Valid, 299 Invalid, 219 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 211 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-24 21:57:07,026 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181 states. [2023-11-24 21:57:07,033 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181 to 171. [2023-11-24 21:57:07,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 171 states, 82 states have (on average 2.024390243902439) internal successors, (166), 156 states have internal predecessors, (166), 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 21:57:07,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171 states to 171 states and 182 transitions. [2023-11-24 21:57:07,035 INFO L78 Accepts]: Start accepts. Automaton has 171 states and 182 transitions. Word has length 12 [2023-11-24 21:57:07,035 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 21:57:07,035 INFO L495 AbstractCegarLoop]: Abstraction has 171 states and 182 transitions. [2023-11-24 21:57:07,036 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 21:57:07,036 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states and 182 transitions. [2023-11-24 21:57:07,036 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2023-11-24 21:57:07,036 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 21:57:07,037 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 21:57:07,044 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f78c4f18-373c-4795-9570-7a4d1b5991b2/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)] Forceful destruction successful, exit code 0 [2023-11-24 21:57:07,239 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f78c4f18-373c-4795-9570-7a4d1b5991b2/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 21:57:07,239 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 21:57:07,240 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:57:07,240 INFO L85 PathProgramCache]: Analyzing trace with hash 533592200, now seen corresponding path program 1 times [2023-11-24 21:57:07,241 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-24 21:57:07,241 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [49121416] [2023-11-24 21:57:07,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:57:07,241 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 21:57:07,241 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f78c4f18-373c-4795-9570-7a4d1b5991b2/bin/uautomizer-verify-NlZe1sFDwI/mathsat [2023-11-24 21:57:07,243 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f78c4f18-373c-4795-9570-7a4d1b5991b2/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 21:57:07,246 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f78c4f18-373c-4795-9570-7a4d1b5991b2/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 21:57:07,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:57:07,358 INFO L262 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 15 conjunts are in the unsatisfiable core [2023-11-24 21:57:07,360 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 21:57:07,458 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 21:57:07,510 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:57:07,512 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 21:57:07,613 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 21:57:07,614 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 21:57:07,614 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-24 21:57:07,614 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [49121416] [2023-11-24 21:57:07,614 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [49121416] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:57:07,615 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:57:07,615 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-24 21:57:07,615 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [569729329] [2023-11-24 21:57:07,615 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:57:07,616 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-24 21:57:07,616 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-24 21:57:07,616 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-24 21:57:07,617 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=19, Unknown=1, NotChecked=8, Total=42 [2023-11-24 21:57:07,617 INFO L87 Difference]: Start difference. First operand 171 states and 182 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 21:57:08,776 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 21:57:08,776 INFO L93 Difference]: Finished difference Result 181 states and 195 transitions. [2023-11-24 21:57:08,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-24 21:57:08,776 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 21:57:08,777 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 21:57:08,779 INFO L225 Difference]: With dead ends: 181 [2023-11-24 21:57:08,779 INFO L226 Difference]: Without dead ends: 181 [2023-11-24 21:57:08,779 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 21:57:08,780 INFO L413 NwaCegarLoop]: 113 mSDtfsCounter, 46 mSDsluCounter, 256 mSDsCounter, 0 mSdLazyCounter, 461 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 369 SdHoareTripleChecker+Invalid, 672 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 461 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 200 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-11-24 21:57:08,780 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [47 Valid, 369 Invalid, 672 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 461 Invalid, 0 Unknown, 200 Unchecked, 1.1s Time] [2023-11-24 21:57:08,781 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181 states. [2023-11-24 21:57:08,786 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181 to 170. [2023-11-24 21:57:08,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 170 states, 82 states have (on average 2.0121951219512195) internal successors, (165), 155 states have internal predecessors, (165), 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 21:57:08,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170 states to 170 states and 181 transitions. [2023-11-24 21:57:08,788 INFO L78 Accepts]: Start accepts. Automaton has 170 states and 181 transitions. Word has length 14 [2023-11-24 21:57:08,789 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 21:57:08,789 INFO L495 AbstractCegarLoop]: Abstraction has 170 states and 181 transitions. [2023-11-24 21:57:08,789 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 21:57:08,789 INFO L276 IsEmpty]: Start isEmpty. Operand 170 states and 181 transitions. [2023-11-24 21:57:08,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2023-11-24 21:57:08,790 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 21:57:08,790 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 21:57:08,801 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f78c4f18-373c-4795-9570-7a4d1b5991b2/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)] Ended with exit code 0 [2023-11-24 21:57:08,993 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f78c4f18-373c-4795-9570-7a4d1b5991b2/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 21:57:08,993 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 21:57:08,994 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:57:08,994 INFO L85 PathProgramCache]: Analyzing trace with hash 533592199, now seen corresponding path program 1 times [2023-11-24 21:57:08,994 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-24 21:57:08,994 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [286221087] [2023-11-24 21:57:08,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:57:08,995 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 21:57:08,995 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f78c4f18-373c-4795-9570-7a4d1b5991b2/bin/uautomizer-verify-NlZe1sFDwI/mathsat [2023-11-24 21:57:08,996 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f78c4f18-373c-4795-9570-7a4d1b5991b2/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 21:57:09,012 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f78c4f18-373c-4795-9570-7a4d1b5991b2/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 21:57:09,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:57:09,109 INFO L262 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-24 21:57:09,111 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 21:57:09,227 INFO L349 Elim1Store]: treesize reduction 24, result has 33.3 percent of original size [2023-11-24 21:57:09,227 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 21:57:09,273 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 21:57:09,273 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 21:57:09,274 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-24 21:57:09,274 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [286221087] [2023-11-24 21:57:09,274 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [286221087] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:57:09,274 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:57:09,274 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-24 21:57:09,274 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2000511237] [2023-11-24 21:57:09,275 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:57:09,275 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-24 21:57:09,275 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-24 21:57:09,276 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-24 21:57:09,276 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-24 21:57:09,276 INFO L87 Difference]: Start difference. First operand 170 states and 181 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 21:57:10,401 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 21:57:10,402 INFO L93 Difference]: Finished difference Result 217 states and 231 transitions. [2023-11-24 21:57:10,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-24 21:57:10,402 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 21:57:10,402 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 21:57:10,405 INFO L225 Difference]: With dead ends: 217 [2023-11-24 21:57:10,405 INFO L226 Difference]: Without dead ends: 217 [2023-11-24 21:57:10,405 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 21:57:10,406 INFO L413 NwaCegarLoop]: 106 mSDtfsCounter, 165 mSDsluCounter, 241 mSDsCounter, 0 mSdLazyCounter, 395 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 167 SdHoareTripleChecker+Valid, 347 SdHoareTripleChecker+Invalid, 428 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 395 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-11-24 21:57:10,406 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [167 Valid, 347 Invalid, 428 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 395 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-11-24 21:57:10,407 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 217 states. [2023-11-24 21:57:10,412 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 217 to 178. [2023-11-24 21:57:10,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 178 states, 89 states have (on average 1.9887640449438202) internal successors, (177), 162 states have internal predecessors, (177), 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 21:57:10,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178 states to 178 states and 195 transitions. [2023-11-24 21:57:10,414 INFO L78 Accepts]: Start accepts. Automaton has 178 states and 195 transitions. Word has length 14 [2023-11-24 21:57:10,414 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 21:57:10,415 INFO L495 AbstractCegarLoop]: Abstraction has 178 states and 195 transitions. [2023-11-24 21:57:10,415 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 21:57:10,415 INFO L276 IsEmpty]: Start isEmpty. Operand 178 states and 195 transitions. [2023-11-24 21:57:10,416 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2023-11-24 21:57:10,416 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 21:57:10,416 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 21:57:10,421 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f78c4f18-373c-4795-9570-7a4d1b5991b2/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 21:57:10,618 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f78c4f18-373c-4795-9570-7a4d1b5991b2/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 21:57:10,618 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 21:57:10,619 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:57:10,619 INFO L85 PathProgramCache]: Analyzing trace with hash 31377433, now seen corresponding path program 1 times [2023-11-24 21:57:10,620 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-24 21:57:10,620 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [10581779] [2023-11-24 21:57:10,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:57:10,620 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 21:57:10,620 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f78c4f18-373c-4795-9570-7a4d1b5991b2/bin/uautomizer-verify-NlZe1sFDwI/mathsat [2023-11-24 21:57:10,621 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f78c4f18-373c-4795-9570-7a4d1b5991b2/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 21:57:10,632 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f78c4f18-373c-4795-9570-7a4d1b5991b2/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 21:57:10,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:57:10,767 INFO L262 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-24 21:57:10,769 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 21:57:10,778 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 21:57:10,807 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 21:57:10,807 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 21:57:10,807 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-24 21:57:10,807 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [10581779] [2023-11-24 21:57:10,808 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [10581779] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:57:10,808 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:57:10,808 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-24 21:57:10,808 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [786378521] [2023-11-24 21:57:10,808 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:57:10,809 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-24 21:57:10,809 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-24 21:57:10,810 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-24 21:57:10,811 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-24 21:57:10,811 INFO L87 Difference]: Start difference. First operand 178 states and 195 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 21:57:11,527 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 21:57:11,528 INFO L93 Difference]: Finished difference Result 225 states and 249 transitions. [2023-11-24 21:57:11,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-24 21:57:11,529 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 21:57:11,529 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 21:57:11,531 INFO L225 Difference]: With dead ends: 225 [2023-11-24 21:57:11,531 INFO L226 Difference]: Without dead ends: 225 [2023-11-24 21:57:11,531 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 21:57:11,532 INFO L413 NwaCegarLoop]: 130 mSDtfsCounter, 57 mSDsluCounter, 271 mSDsCounter, 0 mSdLazyCounter, 300 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 401 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 21:57:11,532 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [57 Valid, 401 Invalid, 302 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 300 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-11-24 21:57:11,533 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 225 states. [2023-11-24 21:57:11,541 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 225 to 197. [2023-11-24 21:57:11,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 197 states, 110 states have (on average 2.0272727272727273) internal successors, (223), 181 states have internal predecessors, (223), 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 21:57:11,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 197 states to 197 states and 241 transitions. [2023-11-24 21:57:11,546 INFO L78 Accepts]: Start accepts. Automaton has 197 states and 241 transitions. Word has length 20 [2023-11-24 21:57:11,546 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 21:57:11,547 INFO L495 AbstractCegarLoop]: Abstraction has 197 states and 241 transitions. [2023-11-24 21:57:11,547 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 21:57:11,547 INFO L276 IsEmpty]: Start isEmpty. Operand 197 states and 241 transitions. [2023-11-24 21:57:11,549 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2023-11-24 21:57:11,549 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 21:57:11,549 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 21:57:11,555 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f78c4f18-373c-4795-9570-7a4d1b5991b2/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 21:57:11,752 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f78c4f18-373c-4795-9570-7a4d1b5991b2/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 21:57:11,753 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 21:57:11,753 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:57:11,753 INFO L85 PathProgramCache]: Analyzing trace with hash 31377434, now seen corresponding path program 1 times [2023-11-24 21:57:11,753 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-24 21:57:11,753 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [380293786] [2023-11-24 21:57:11,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:57:11,754 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 21:57:11,754 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f78c4f18-373c-4795-9570-7a4d1b5991b2/bin/uautomizer-verify-NlZe1sFDwI/mathsat [2023-11-24 21:57:11,755 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f78c4f18-373c-4795-9570-7a4d1b5991b2/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 21:57:11,756 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f78c4f18-373c-4795-9570-7a4d1b5991b2/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 21:57:11,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:57:11,891 INFO L262 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-24 21:57:11,893 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 21:57:11,904 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 21:57:11,972 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 21:57:11,972 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 21:57:11,973 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-24 21:57:11,973 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [380293786] [2023-11-24 21:57:11,973 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [380293786] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:57:11,973 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:57:11,973 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-24 21:57:11,973 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1403300683] [2023-11-24 21:57:11,974 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:57:11,984 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-24 21:57:11,985 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-24 21:57:11,985 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-24 21:57:11,985 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-24 21:57:11,986 INFO L87 Difference]: Start difference. First operand 197 states and 241 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 21:57:12,900 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 21:57:12,900 INFO L93 Difference]: Finished difference Result 229 states and 253 transitions. [2023-11-24 21:57:12,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-24 21:57:12,901 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 21:57:12,901 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 21:57:12,903 INFO L225 Difference]: With dead ends: 229 [2023-11-24 21:57:12,903 INFO L226 Difference]: Without dead ends: 229 [2023-11-24 21:57:12,903 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 21:57:12,904 INFO L413 NwaCegarLoop]: 122 mSDtfsCounter, 62 mSDsluCounter, 274 mSDsCounter, 0 mSdLazyCounter, 298 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 396 SdHoareTripleChecker+Invalid, 301 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 298 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-11-24 21:57:12,904 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [63 Valid, 396 Invalid, 301 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 298 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-11-24 21:57:12,905 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 229 states. [2023-11-24 21:57:12,911 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 229 to 199. [2023-11-24 21:57:12,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 199 states, 113 states have (on average 1.991150442477876) internal successors, (225), 182 states have internal predecessors, (225), 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 21:57:12,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 199 states to 199 states and 246 transitions. [2023-11-24 21:57:12,913 INFO L78 Accepts]: Start accepts. Automaton has 199 states and 246 transitions. Word has length 20 [2023-11-24 21:57:12,913 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 21:57:12,914 INFO L495 AbstractCegarLoop]: Abstraction has 199 states and 246 transitions. [2023-11-24 21:57:12,914 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 21:57:12,914 INFO L276 IsEmpty]: Start isEmpty. Operand 199 states and 246 transitions. [2023-11-24 21:57:12,915 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2023-11-24 21:57:12,915 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 21:57:12,915 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 21:57:12,929 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f78c4f18-373c-4795-9570-7a4d1b5991b2/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 21:57:13,118 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f78c4f18-373c-4795-9570-7a4d1b5991b2/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 21:57:13,118 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 21:57:13,119 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:57:13,119 INFO L85 PathProgramCache]: Analyzing trace with hash 89011069, now seen corresponding path program 1 times [2023-11-24 21:57:13,120 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-24 21:57:13,120 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1272685410] [2023-11-24 21:57:13,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:57:13,121 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 21:57:13,121 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f78c4f18-373c-4795-9570-7a4d1b5991b2/bin/uautomizer-verify-NlZe1sFDwI/mathsat [2023-11-24 21:57:13,123 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f78c4f18-373c-4795-9570-7a4d1b5991b2/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 21:57:13,128 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f78c4f18-373c-4795-9570-7a4d1b5991b2/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 21:57:13,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:57:13,276 INFO L262 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-24 21:57:13,277 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 21:57:13,305 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 21:57:13,305 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 21:57:13,305 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-24 21:57:13,305 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1272685410] [2023-11-24 21:57:13,306 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1272685410] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:57:13,306 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:57:13,306 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-24 21:57:13,306 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [940413710] [2023-11-24 21:57:13,306 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:57:13,307 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-24 21:57:13,307 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-24 21:57:13,308 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-24 21:57:13,308 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-24 21:57:13,308 INFO L87 Difference]: Start difference. First operand 199 states and 246 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 21:57:13,679 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 21:57:13,680 INFO L93 Difference]: Finished difference Result 199 states and 245 transitions. [2023-11-24 21:57:13,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-24 21:57:13,680 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 21:57:13,681 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 21:57:13,682 INFO L225 Difference]: With dead ends: 199 [2023-11-24 21:57:13,682 INFO L226 Difference]: Without dead ends: 199 [2023-11-24 21:57:13,683 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 21:57:13,683 INFO L413 NwaCegarLoop]: 140 mSDtfsCounter, 75 mSDsluCounter, 361 mSDsCounter, 0 mSdLazyCounter, 118 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 78 SdHoareTripleChecker+Valid, 501 SdHoareTripleChecker+Invalid, 118 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 118 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-24 21:57:13,684 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [78 Valid, 501 Invalid, 118 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 118 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-24 21:57:13,684 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 199 states. [2023-11-24 21:57:13,690 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 199 to 199. [2023-11-24 21:57:13,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 199 states, 113 states have (on average 1.9823008849557522) internal successors, (224), 182 states have internal predecessors, (224), 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 21:57:13,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 199 states to 199 states and 245 transitions. [2023-11-24 21:57:13,693 INFO L78 Accepts]: Start accepts. Automaton has 199 states and 245 transitions. Word has length 22 [2023-11-24 21:57:13,693 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 21:57:13,693 INFO L495 AbstractCegarLoop]: Abstraction has 199 states and 245 transitions. [2023-11-24 21:57:13,694 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 21:57:13,694 INFO L276 IsEmpty]: Start isEmpty. Operand 199 states and 245 transitions. [2023-11-24 21:57:13,694 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2023-11-24 21:57:13,695 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 21:57:13,695 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 21:57:13,706 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f78c4f18-373c-4795-9570-7a4d1b5991b2/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)] Forceful destruction successful, exit code 0 [2023-11-24 21:57:13,906 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f78c4f18-373c-4795-9570-7a4d1b5991b2/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 21:57:13,906 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 21:57:13,907 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:57:13,907 INFO L85 PathProgramCache]: Analyzing trace with hash 2003788782, now seen corresponding path program 1 times [2023-11-24 21:57:13,907 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-24 21:57:13,908 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1868594998] [2023-11-24 21:57:13,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:57:13,908 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 21:57:13,908 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f78c4f18-373c-4795-9570-7a4d1b5991b2/bin/uautomizer-verify-NlZe1sFDwI/mathsat [2023-11-24 21:57:13,909 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f78c4f18-373c-4795-9570-7a4d1b5991b2/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 21:57:13,940 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f78c4f18-373c-4795-9570-7a4d1b5991b2/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 21:57:14,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:57:14,125 INFO L262 TraceCheckSpWp]: Trace formula consists of 181 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-24 21:57:14,130 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 21:57:14,135 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 21:57:14,180 INFO L349 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2023-11-24 21:57:14,181 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 21:57:14,246 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 21:57:14,247 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 21:57:14,247 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-24 21:57:14,247 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1868594998] [2023-11-24 21:57:14,247 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1868594998] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:57:14,247 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:57:14,248 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-24 21:57:14,248 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [804760654] [2023-11-24 21:57:14,248 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:57:14,248 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-24 21:57:14,249 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-24 21:57:14,249 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-24 21:57:14,249 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-11-24 21:57:14,250 INFO L87 Difference]: Start difference. First operand 199 states and 245 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 21:57:15,314 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 21:57:15,314 INFO L93 Difference]: Finished difference Result 210 states and 252 transitions. [2023-11-24 21:57:15,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-24 21:57:15,315 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 21:57:15,315 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 21:57:15,317 INFO L225 Difference]: With dead ends: 210 [2023-11-24 21:57:15,317 INFO L226 Difference]: Without dead ends: 210 [2023-11-24 21:57:15,317 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 21:57:15,318 INFO L413 NwaCegarLoop]: 87 mSDtfsCounter, 117 mSDsluCounter, 311 mSDsCounter, 0 mSdLazyCounter, 497 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 119 SdHoareTripleChecker+Valid, 398 SdHoareTripleChecker+Invalid, 511 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 497 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-11-24 21:57:15,318 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [119 Valid, 398 Invalid, 511 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 497 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-11-24 21:57:15,319 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 210 states. [2023-11-24 21:57:15,324 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 210 to 194. [2023-11-24 21:57:15,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 194 states, 113 states have (on average 1.8938053097345133) internal successors, (214), 177 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 21:57:15,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 194 states to 194 states and 235 transitions. [2023-11-24 21:57:15,327 INFO L78 Accepts]: Start accepts. Automaton has 194 states and 235 transitions. Word has length 26 [2023-11-24 21:57:15,327 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 21:57:15,327 INFO L495 AbstractCegarLoop]: Abstraction has 194 states and 235 transitions. [2023-11-24 21:57:15,328 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 21:57:15,328 INFO L276 IsEmpty]: Start isEmpty. Operand 194 states and 235 transitions. [2023-11-24 21:57:15,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2023-11-24 21:57:15,329 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 21:57:15,329 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 21:57:15,333 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f78c4f18-373c-4795-9570-7a4d1b5991b2/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 21:57:15,533 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f78c4f18-373c-4795-9570-7a4d1b5991b2/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 21:57:15,533 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 21:57:15,533 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:57:15,533 INFO L85 PathProgramCache]: Analyzing trace with hash 2003788783, now seen corresponding path program 1 times [2023-11-24 21:57:15,534 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-24 21:57:15,534 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1678191218] [2023-11-24 21:57:15,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:57:15,534 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 21:57:15,534 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f78c4f18-373c-4795-9570-7a4d1b5991b2/bin/uautomizer-verify-NlZe1sFDwI/mathsat [2023-11-24 21:57:15,535 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f78c4f18-373c-4795-9570-7a4d1b5991b2/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 21:57:15,536 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f78c4f18-373c-4795-9570-7a4d1b5991b2/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 21:57:15,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:57:15,777 INFO L262 TraceCheckSpWp]: Trace formula consists of 181 conjuncts, 16 conjunts are in the unsatisfiable core [2023-11-24 21:57:15,781 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 21:57:15,790 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 21:57:15,799 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 21:57:15,841 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 21:57:15,860 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:57:15,861 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 21:57:15,875 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2023-11-24 21:57:15,875 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 21:57:15,946 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 21:57:15,946 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 21:57:15,947 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-24 21:57:15,947 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1678191218] [2023-11-24 21:57:15,947 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1678191218] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:57:15,947 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:57:15,947 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-24 21:57:15,947 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1002747730] [2023-11-24 21:57:15,948 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:57:15,948 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-24 21:57:15,948 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-24 21:57:15,949 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-24 21:57:15,949 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=21, Unknown=1, NotChecked=8, Total=42 [2023-11-24 21:57:15,949 INFO L87 Difference]: Start difference. First operand 194 states and 235 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 21:57:17,207 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 21:57:17,208 INFO L93 Difference]: Finished difference Result 239 states and 265 transitions. [2023-11-24 21:57:17,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-24 21:57:17,209 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 21:57:17,211 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 21:57:17,214 INFO L225 Difference]: With dead ends: 239 [2023-11-24 21:57:17,215 INFO L226 Difference]: Without dead ends: 239 [2023-11-24 21:57:17,215 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 21:57:17,217 INFO L413 NwaCegarLoop]: 90 mSDtfsCounter, 112 mSDsluCounter, 235 mSDsCounter, 0 mSdLazyCounter, 503 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 113 SdHoareTripleChecker+Valid, 325 SdHoareTripleChecker+Invalid, 787 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 503 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 267 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-11-24 21:57:17,218 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [113 Valid, 325 Invalid, 787 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 503 Invalid, 0 Unknown, 267 Unchecked, 1.2s Time] [2023-11-24 21:57:17,219 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 239 states. [2023-11-24 21:57:17,228 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 239 to 194. [2023-11-24 21:57:17,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 194 states, 113 states have (on average 1.8495575221238938) internal successors, (209), 177 states have internal predecessors, (209), 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 21:57:17,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 194 states to 194 states and 230 transitions. [2023-11-24 21:57:17,231 INFO L78 Accepts]: Start accepts. Automaton has 194 states and 230 transitions. Word has length 26 [2023-11-24 21:57:17,233 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 21:57:17,233 INFO L495 AbstractCegarLoop]: Abstraction has 194 states and 230 transitions. [2023-11-24 21:57:17,234 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 21:57:17,234 INFO L276 IsEmpty]: Start isEmpty. Operand 194 states and 230 transitions. [2023-11-24 21:57:17,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2023-11-24 21:57:17,238 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 21:57:17,238 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 21:57:17,242 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f78c4f18-373c-4795-9570-7a4d1b5991b2/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 21:57:17,441 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f78c4f18-373c-4795-9570-7a4d1b5991b2/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 21:57:17,442 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 21:57:17,442 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:57:17,442 INFO L85 PathProgramCache]: Analyzing trace with hash -880061929, now seen corresponding path program 1 times [2023-11-24 21:57:17,443 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-24 21:57:17,443 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1456632707] [2023-11-24 21:57:17,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:57:17,443 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 21:57:17,443 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f78c4f18-373c-4795-9570-7a4d1b5991b2/bin/uautomizer-verify-NlZe1sFDwI/mathsat [2023-11-24 21:57:17,445 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f78c4f18-373c-4795-9570-7a4d1b5991b2/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 21:57:17,460 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f78c4f18-373c-4795-9570-7a4d1b5991b2/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 21:57:17,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:57:17,629 INFO L262 TraceCheckSpWp]: Trace formula consists of 185 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-24 21:57:17,631 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 21:57:18,020 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 21:57:18,020 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 21:57:18,020 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-24 21:57:18,020 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1456632707] [2023-11-24 21:57:18,020 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1456632707] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:57:18,020 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:57:18,021 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-24 21:57:18,021 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1254524750] [2023-11-24 21:57:18,021 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:57:18,021 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-24 21:57:18,021 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-24 21:57:18,022 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-24 21:57:18,022 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-11-24 21:57:18,022 INFO L87 Difference]: Start difference. First operand 194 states and 230 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 21:57:18,950 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 21:57:18,950 INFO L93 Difference]: Finished difference Result 192 states and 227 transitions. [2023-11-24 21:57:18,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-24 21:57:18,953 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 21:57:18,953 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 21:57:18,955 INFO L225 Difference]: With dead ends: 192 [2023-11-24 21:57:18,955 INFO L226 Difference]: Without dead ends: 192 [2023-11-24 21:57:18,955 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 21:57:18,956 INFO L413 NwaCegarLoop]: 125 mSDtfsCounter, 324 mSDsluCounter, 285 mSDsCounter, 0 mSdLazyCounter, 185 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 327 SdHoareTripleChecker+Valid, 410 SdHoareTripleChecker+Invalid, 200 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 185 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-11-24 21:57:18,956 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [327 Valid, 410 Invalid, 200 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 185 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-11-24 21:57:18,957 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 192 states. [2023-11-24 21:57:18,962 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 192 to 192. [2023-11-24 21:57:18,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 192 states, 113 states have (on average 1.823008849557522) internal successors, (206), 175 states have internal predecessors, (206), 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 21:57:18,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 192 states to 192 states and 227 transitions. [2023-11-24 21:57:18,966 INFO L78 Accepts]: Start accepts. Automaton has 192 states and 227 transitions. Word has length 29 [2023-11-24 21:57:18,966 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 21:57:18,966 INFO L495 AbstractCegarLoop]: Abstraction has 192 states and 227 transitions. [2023-11-24 21:57:18,967 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 21:57:18,967 INFO L276 IsEmpty]: Start isEmpty. Operand 192 states and 227 transitions. [2023-11-24 21:57:18,967 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2023-11-24 21:57:18,968 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 21:57:18,968 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 21:57:18,977 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f78c4f18-373c-4795-9570-7a4d1b5991b2/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 21:57:19,171 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f78c4f18-373c-4795-9570-7a4d1b5991b2/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 21:57:19,171 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 21:57:19,172 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:57:19,172 INFO L85 PathProgramCache]: Analyzing trace with hash -880061957, now seen corresponding path program 1 times [2023-11-24 21:57:19,172 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-24 21:57:19,172 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [465910376] [2023-11-24 21:57:19,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:57:19,173 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 21:57:19,173 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f78c4f18-373c-4795-9570-7a4d1b5991b2/bin/uautomizer-verify-NlZe1sFDwI/mathsat [2023-11-24 21:57:19,174 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f78c4f18-373c-4795-9570-7a4d1b5991b2/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 21:57:19,175 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f78c4f18-373c-4795-9570-7a4d1b5991b2/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 21:57:19,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:57:19,355 INFO L262 TraceCheckSpWp]: Trace formula consists of 189 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-24 21:57:19,356 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 21:57:19,379 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 21:57:19,379 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 21:57:19,380 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-24 21:57:19,380 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [465910376] [2023-11-24 21:57:19,380 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [465910376] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:57:19,380 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:57:19,380 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-24 21:57:19,380 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1799913229] [2023-11-24 21:57:19,381 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:57:19,382 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-24 21:57:19,383 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-24 21:57:19,383 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-24 21:57:19,383 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-24 21:57:19,384 INFO L87 Difference]: Start difference. First operand 192 states and 227 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 21:57:19,711 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 21:57:19,711 INFO L93 Difference]: Finished difference Result 231 states and 269 transitions. [2023-11-24 21:57:19,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-24 21:57:19,711 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 21:57:19,712 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 21:57:19,713 INFO L225 Difference]: With dead ends: 231 [2023-11-24 21:57:19,713 INFO L226 Difference]: Without dead ends: 231 [2023-11-24 21:57:19,714 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 21:57:19,714 INFO L413 NwaCegarLoop]: 142 mSDtfsCounter, 34 mSDsluCounter, 281 mSDsCounter, 0 mSdLazyCounter, 80 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 423 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 21:57:19,714 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 423 Invalid, 80 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 80 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-24 21:57:19,715 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 231 states. [2023-11-24 21:57:19,720 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 231 to 196. [2023-11-24 21:57:19,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 196 states, 117 states have (on average 1.794871794871795) internal successors, (210), 179 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 21:57:19,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 196 states to 196 states and 231 transitions. [2023-11-24 21:57:19,724 INFO L78 Accepts]: Start accepts. Automaton has 196 states and 231 transitions. Word has length 29 [2023-11-24 21:57:19,725 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 21:57:19,725 INFO L495 AbstractCegarLoop]: Abstraction has 196 states and 231 transitions. [2023-11-24 21:57:19,725 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 21:57:19,725 INFO L276 IsEmpty]: Start isEmpty. Operand 196 states and 231 transitions. [2023-11-24 21:57:19,729 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2023-11-24 21:57:19,729 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 21:57:19,729 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 21:57:19,738 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f78c4f18-373c-4795-9570-7a4d1b5991b2/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 21:57:19,933 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f78c4f18-373c-4795-9570-7a4d1b5991b2/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 21:57:19,933 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 21:57:19,934 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:57:19,934 INFO L85 PathProgramCache]: Analyzing trace with hash -856629117, now seen corresponding path program 1 times [2023-11-24 21:57:19,934 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-24 21:57:19,934 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1731270631] [2023-11-24 21:57:19,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:57:19,934 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 21:57:19,934 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f78c4f18-373c-4795-9570-7a4d1b5991b2/bin/uautomizer-verify-NlZe1sFDwI/mathsat [2023-11-24 21:57:19,935 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f78c4f18-373c-4795-9570-7a4d1b5991b2/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 21:57:19,937 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f78c4f18-373c-4795-9570-7a4d1b5991b2/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 21:57:20,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:57:20,263 INFO L262 TraceCheckSpWp]: Trace formula consists of 277 conjuncts, 14 conjunts are in the unsatisfiable core [2023-11-24 21:57:20,266 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 21:57:20,302 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:57:20,304 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:57:20,306 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:57:20,307 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-24 21:57:20,308 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-24 21:57:20,309 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-24 21:57:20,311 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 21:57:20,419 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:57:20,421 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:57:20,422 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:57:20,424 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:57:20,426 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:57:20,427 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:57:20,432 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:57:20,439 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 21:57:20,962 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:57:20,964 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:57:20,965 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:57:20,967 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:57:20,969 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:57:20,970 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:57:20,972 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:57:20,975 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 21:57:23,733 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-24 21:57:23,734 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 21:57:31,303 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-24 21:57:31,304 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 21:57:31,334 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 21:57:31,334 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 21:57:31,335 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-24 21:57:31,335 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1731270631] [2023-11-24 21:57:31,335 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1731270631] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:57:31,335 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:57:31,335 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-24 21:57:31,336 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [215098748] [2023-11-24 21:57:31,336 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:57:31,336 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-24 21:57:31,336 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-24 21:57:31,337 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-24 21:57:31,337 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=25, Unknown=3, NotChecked=0, Total=42 [2023-11-24 21:57:31,337 INFO L87 Difference]: Start difference. First operand 196 states and 231 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 21:57:35,487 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 21:57:39,491 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-24 21:57:43,524 WARN L539 Checker$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 21:57:47,529 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]