./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test2-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version e7bb482b 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_f238cba6-da83-43d0-be78-0cb2718c8e92/bin/uautomizer-verify-WvqO1wxjHP/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f238cba6-da83-43d0-be78-0cb2718c8e92/bin/uautomizer-verify-WvqO1wxjHP/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f238cba6-da83-43d0-be78-0cb2718c8e92/bin/uautomizer-verify-WvqO1wxjHP/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f238cba6-da83-43d0-be78-0cb2718c8e92/bin/uautomizer-verify-WvqO1wxjHP/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test2-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f238cba6-da83-43d0-be78-0cb2718c8e92/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f238cba6-da83-43d0-be78-0cb2718c8e92/bin/uautomizer-verify-WvqO1wxjHP --witnessprinter.witness.filename witness.graphml --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 2a3326bc22943076798f4c55311213b2a5f9b1e03e68dc17c2ac5a3393252251 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-e7bb482 [2023-11-06 23:06:23,373 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-06 23:06:23,473 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f238cba6-da83-43d0-be78-0cb2718c8e92/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2023-11-06 23:06:23,480 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-06 23:06:23,481 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-06 23:06:23,523 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-06 23:06:23,523 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-06 23:06:23,524 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-06 23:06:23,525 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-06 23:06:23,526 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-06 23:06:23,527 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-06 23:06:23,528 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-06 23:06:23,529 INFO L153 SettingsManager]: * Use SBE=true [2023-11-06 23:06:23,530 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-06 23:06:23,530 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-06 23:06:23,531 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-06 23:06:23,532 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-06 23:06:23,533 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-06 23:06:23,533 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-06 23:06:23,534 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-06 23:06:23,535 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-06 23:06:23,538 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-06 23:06:23,539 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-06 23:06:23,539 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-06 23:06:23,540 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-06 23:06:23,541 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-06 23:06:23,542 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-06 23:06:23,542 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-06 23:06:23,543 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-06 23:06:23,551 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 23:06:23,552 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-06 23:06:23,553 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-06 23:06:23,553 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-06 23:06:23,554 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-06 23:06:23,555 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-06 23:06:23,555 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-06 23:06:23,556 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-06 23:06:23,556 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-06 23:06:23,557 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_f238cba6-da83-43d0-be78-0cb2718c8e92/bin/uautomizer-verify-WvqO1wxjHP/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f238cba6-da83-43d0-be78-0cb2718c8e92/bin/uautomizer-verify-WvqO1wxjHP Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2a3326bc22943076798f4c55311213b2a5f9b1e03e68dc17c2ac5a3393252251 [2023-11-06 23:06:23,883 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-06 23:06:23,930 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-06 23:06:23,934 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-06 23:06:23,936 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-06 23:06:23,937 INFO L274 PluginConnector]: CDTParser initialized [2023-11-06 23:06:23,939 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f238cba6-da83-43d0-be78-0cb2718c8e92/bin/uautomizer-verify-WvqO1wxjHP/../../sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test2-2.i [2023-11-06 23:06:27,416 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-06 23:06:27,944 INFO L384 CDTParser]: Found 1 translation units. [2023-11-06 23:06:27,944 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f238cba6-da83-43d0-be78-0cb2718c8e92/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test2-2.i [2023-11-06 23:06:27,983 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f238cba6-da83-43d0-be78-0cb2718c8e92/bin/uautomizer-verify-WvqO1wxjHP/data/a1885515c/d90a64e5353b47078d9456da91ea48ec/FLAGfe278de18 [2023-11-06 23:06:28,004 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f238cba6-da83-43d0-be78-0cb2718c8e92/bin/uautomizer-verify-WvqO1wxjHP/data/a1885515c/d90a64e5353b47078d9456da91ea48ec [2023-11-06 23:06:28,014 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-06 23:06:28,019 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-06 23:06:28,026 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-06 23:06:28,028 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-06 23:06:28,034 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-06 23:06:28,035 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 11:06:28" (1/1) ... [2023-11-06 23:06:28,037 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@402d0a40 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:06:28, skipping insertion in model container [2023-11-06 23:06:28,037 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 11:06:28" (1/1) ... [2023-11-06 23:06:28,130 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-06 23:06:29,002 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 23:06:29,017 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) [2023-11-06 23:06:29,018 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@22f974d8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:06:29, skipping insertion in model container [2023-11-06 23:06:29,019 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-06 23:06:29,019 INFO L186 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2023-11-06 23:06:29,022 INFO L158 Benchmark]: Toolchain (without parser) took 1001.53ms. Allocated memory is still 157.3MB. Free memory was 113.9MB in the beginning and 93.8MB in the end (delta: 20.1MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2023-11-06 23:06:29,023 INFO L158 Benchmark]: CDTParser took 0.41ms. Allocated memory is still 157.3MB. Free memory is still 130.5MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-06 23:06:29,024 INFO L158 Benchmark]: CACSL2BoogieTranslator took 992.95ms. Allocated memory is still 157.3MB. Free memory was 113.5MB in the beginning and 93.8MB in the end (delta: 19.7MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2023-11-06 23:06:29,026 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.41ms. Allocated memory is still 157.3MB. Free memory is still 130.5MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 992.95ms. Allocated memory is still 157.3MB. Free memory was 113.5MB in the beginning and 93.8MB in the end (delta: 19.7MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 815]: 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_f238cba6-da83-43d0-be78-0cb2718c8e92/bin/uautomizer-verify-WvqO1wxjHP/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f238cba6-da83-43d0-be78-0cb2718c8e92/bin/uautomizer-verify-WvqO1wxjHP/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f238cba6-da83-43d0-be78-0cb2718c8e92/bin/uautomizer-verify-WvqO1wxjHP/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f238cba6-da83-43d0-be78-0cb2718c8e92/bin/uautomizer-verify-WvqO1wxjHP/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test2-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f238cba6-da83-43d0-be78-0cb2718c8e92/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f238cba6-da83-43d0-be78-0cb2718c8e92/bin/uautomizer-verify-WvqO1wxjHP --witnessprinter.witness.filename witness.graphml --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 2a3326bc22943076798f4c55311213b2a5f9b1e03e68dc17c2ac5a3393252251 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-e7bb482 [2023-11-06 23:06:32,099 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-06 23:06:32,256 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f238cba6-da83-43d0-be78-0cb2718c8e92/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2023-11-06 23:06:32,268 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-06 23:06:32,269 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-06 23:06:32,325 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-06 23:06:32,327 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-06 23:06:32,328 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-06 23:06:32,329 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-06 23:06:32,336 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-06 23:06:32,338 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-06 23:06:32,338 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-06 23:06:32,339 INFO L153 SettingsManager]: * Use SBE=true [2023-11-06 23:06:32,341 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-06 23:06:32,342 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-06 23:06:32,343 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-06 23:06:32,343 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-06 23:06:32,344 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-06 23:06:32,345 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-06 23:06:32,345 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-06 23:06:32,346 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-06 23:06:32,347 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-06 23:06:32,347 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-06 23:06:32,348 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-11-06 23:06:32,349 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-11-06 23:06:32,349 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-06 23:06:32,350 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-06 23:06:32,350 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-06 23:06:32,352 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-06 23:06:32,353 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-06 23:06:32,354 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-06 23:06:32,355 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 23:06:32,355 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-06 23:06:32,356 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-06 23:06:32,357 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-11-06 23:06:32,357 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-11-06 23:06:32,358 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-06 23:06:32,358 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-06 23:06:32,359 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-06 23:06:32,360 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-11-06 23:06:32,360 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-06 23:06:32,360 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_f238cba6-da83-43d0-be78-0cb2718c8e92/bin/uautomizer-verify-WvqO1wxjHP/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f238cba6-da83-43d0-be78-0cb2718c8e92/bin/uautomizer-verify-WvqO1wxjHP Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2a3326bc22943076798f4c55311213b2a5f9b1e03e68dc17c2ac5a3393252251 [2023-11-06 23:06:32,923 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-06 23:06:32,966 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-06 23:06:32,970 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-06 23:06:32,971 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-06 23:06:32,972 INFO L274 PluginConnector]: CDTParser initialized [2023-11-06 23:06:32,974 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f238cba6-da83-43d0-be78-0cb2718c8e92/bin/uautomizer-verify-WvqO1wxjHP/../../sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test2-2.i [2023-11-06 23:06:36,914 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-06 23:06:37,368 INFO L384 CDTParser]: Found 1 translation units. [2023-11-06 23:06:37,369 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f238cba6-da83-43d0-be78-0cb2718c8e92/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test2-2.i [2023-11-06 23:06:37,398 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f238cba6-da83-43d0-be78-0cb2718c8e92/bin/uautomizer-verify-WvqO1wxjHP/data/b6de4764b/50e4a5b705824694ba44f40ac2ec8072/FLAG4f5bb55a1 [2023-11-06 23:06:37,432 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f238cba6-da83-43d0-be78-0cb2718c8e92/bin/uautomizer-verify-WvqO1wxjHP/data/b6de4764b/50e4a5b705824694ba44f40ac2ec8072 [2023-11-06 23:06:37,435 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-06 23:06:37,437 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-06 23:06:37,439 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-06 23:06:37,439 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-06 23:06:37,446 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-06 23:06:37,447 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 11:06:37" (1/1) ... [2023-11-06 23:06:37,448 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@52bf98ad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:06:37, skipping insertion in model container [2023-11-06 23:06:37,449 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 11:06:37" (1/1) ... [2023-11-06 23:06:37,540 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-06 23:06:38,441 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 23:06:38,465 INFO L199 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2023-11-06 23:06:38,488 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-06 23:06:38,610 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 23:06:38,617 INFO L202 MainTranslator]: Completed pre-run [2023-11-06 23:06:38,751 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 23:06:38,809 WARN L672 CHandler]: The function memcmp is called, but not defined or handled by StandardFunctionHandler. [2023-11-06 23:06:38,818 INFO L206 MainTranslator]: Completed translation [2023-11-06 23:06:38,819 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:06:38 WrapperNode [2023-11-06 23:06:38,819 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-06 23:06:38,820 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-06 23:06:38,820 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-06 23:06:38,820 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-06 23:06:38,829 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:06:38" (1/1) ... [2023-11-06 23:06:38,881 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:06:38" (1/1) ... [2023-11-06 23:06:38,987 INFO L138 Inliner]: procedures = 211, calls = 288, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 1060 [2023-11-06 23:06:38,992 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-06 23:06:38,993 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-06 23:06:38,993 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-06 23:06:38,993 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-06 23:06:39,005 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:06:38" (1/1) ... [2023-11-06 23:06:39,006 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:06:38" (1/1) ... [2023-11-06 23:06:39,031 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:06:38" (1/1) ... [2023-11-06 23:06:39,045 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:06:38" (1/1) ... [2023-11-06 23:06:39,126 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:06:38" (1/1) ... [2023-11-06 23:06:39,156 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:06:38" (1/1) ... [2023-11-06 23:06:39,172 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:06:38" (1/1) ... [2023-11-06 23:06:39,179 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:06:38" (1/1) ... [2023-11-06 23:06:39,219 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-06 23:06:39,220 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-06 23:06:39,220 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-06 23:06:39,221 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-06 23:06:39,222 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:06:38" (1/1) ... [2023-11-06 23:06:39,230 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 23:06:39,246 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f238cba6-da83-43d0-be78-0cb2718c8e92/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 23:06:39,261 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f238cba6-da83-43d0-be78-0cb2718c8e92/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-06 23:06:39,277 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f238cba6-da83-43d0-be78-0cb2718c8e92/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-06 23:06:39,317 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-11-06 23:06:39,317 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-11-06 23:06:39,318 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2023-11-06 23:06:39,318 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2023-11-06 23:06:39,318 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2023-11-06 23:06:39,318 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2023-11-06 23:06:39,319 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-06 23:06:39,319 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2023-11-06 23:06:39,319 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-06 23:06:39,319 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-06 23:06:39,321 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2023-11-06 23:06:39,322 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2023-11-06 23:06:39,323 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-11-06 23:06:39,323 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-11-06 23:06:39,323 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-06 23:06:39,323 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-06 23:06:39,323 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-06 23:06:39,324 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-06 23:06:39,324 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-06 23:06:39,662 INFO L236 CfgBuilder]: Building ICFG [2023-11-06 23:06:39,664 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-06 23:06:39,710 WARN L818 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2023-11-06 23:06:45,684 INFO L277 CfgBuilder]: Performing block encoding [2023-11-06 23:06:45,698 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-06 23:06:45,698 INFO L302 CfgBuilder]: Removed 63 assume(true) statements. [2023-11-06 23:06:45,702 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 11:06:45 BoogieIcfgContainer [2023-11-06 23:06:45,702 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-06 23:06:45,705 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-06 23:06:45,705 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-06 23:06:45,708 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-06 23:06:45,709 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 11:06:37" (1/3) ... [2023-11-06 23:06:45,709 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1f2b618c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 11:06:45, skipping insertion in model container [2023-11-06 23:06:45,710 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:06:38" (2/3) ... [2023-11-06 23:06:45,710 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1f2b618c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 11:06:45, skipping insertion in model container [2023-11-06 23:06:45,710 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 11:06:45" (3/3) ... [2023-11-06 23:06:45,711 INFO L112 eAbstractionObserver]: Analyzing ICFG uthash_SFH_test2-2.i [2023-11-06 23:06:45,732 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-06 23:06:45,732 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 535 error locations. [2023-11-06 23:06:45,799 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-06 23:06:45,807 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;@aa28506, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-06 23:06:45,807 INFO L358 AbstractCegarLoop]: Starting to check reachability of 535 error locations. [2023-11-06 23:06:45,815 INFO L276 IsEmpty]: Start isEmpty. Operand has 1092 states, 546 states have (on average 2.2142857142857144) internal successors, (1209), 1085 states have internal predecessors, (1209), 10 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (10), 6 states have call predecessors, (10), 10 states have call successors, (10) [2023-11-06 23:06:45,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2023-11-06 23:06:45,821 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 23:06:45,822 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2023-11-06 23:06:45,822 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 532 more)] === [2023-11-06 23:06:45,828 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:06:45,828 INFO L85 PathProgramCache]: Analyzing trace with hash 47731, now seen corresponding path program 1 times [2023-11-06 23:06:45,867 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-06 23:06:45,867 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1603632241] [2023-11-06 23:06:45,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:06:45,868 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 [2023-11-06 23:06:45,868 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f238cba6-da83-43d0-be78-0cb2718c8e92/bin/uautomizer-verify-WvqO1wxjHP/mathsat [2023-11-06 23:06:45,877 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f238cba6-da83-43d0-be78-0cb2718c8e92/bin/uautomizer-verify-WvqO1wxjHP/mathsat -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) [2023-11-06 23:06:45,924 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f238cba6-da83-43d0-be78-0cb2718c8e92/bin/uautomizer-verify-WvqO1wxjHP/mathsat -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 [2023-11-06 23:06:46,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:06:46,063 INFO L262 TraceCheckSpWp]: Trace formula consists of 24 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-06 23:06:46,072 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 23:06:46,155 INFO L351 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 [2023-11-06 23:06:46,175 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 23:06:46,175 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 23:06:46,176 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-06 23:06:46,176 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1603632241] [2023-11-06 23:06:46,177 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1603632241] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:06:46,177 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 23:06:46,177 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 23:06:46,179 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [577376042] [2023-11-06 23:06:46,180 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:06:46,184 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 23:06:46,184 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-06 23:06:46,225 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 23:06:46,225 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 23:06:46,229 INFO L87 Difference]: Start difference. First operand has 1092 states, 546 states have (on average 2.2142857142857144) internal successors, (1209), 1085 states have internal predecessors, (1209), 10 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (10), 6 states have call predecessors, (10), 10 states have call successors, (10) Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:06:48,791 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 23:06:48,791 INFO L93 Difference]: Finished difference Result 1259 states and 1335 transitions. [2023-11-06 23:06:48,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 23:06:48,794 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2023-11-06 23:06:48,794 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 23:06:48,816 INFO L225 Difference]: With dead ends: 1259 [2023-11-06 23:06:48,817 INFO L226 Difference]: Without dead ends: 1257 [2023-11-06 23:06:48,818 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 23:06:48,821 INFO L413 NwaCegarLoop]: 666 mSDtfsCounter, 1001 mSDsluCounter, 156 mSDsCounter, 0 mSdLazyCounter, 641 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1009 SdHoareTripleChecker+Valid, 822 SdHoareTripleChecker+Invalid, 657 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 641 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2023-11-06 23:06:48,822 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1009 Valid, 822 Invalid, 657 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 641 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2023-11-06 23:06:48,842 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1257 states. [2023-11-06 23:06:48,937 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1257 to 1077. [2023-11-06 23:06:48,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1077 states, 548 states have (on average 2.0565693430656933) internal successors, (1127), 1070 states have internal predecessors, (1127), 10 states have call successors, (10), 3 states have call predecessors, (10), 2 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) [2023-11-06 23:06:48,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1077 states to 1077 states and 1145 transitions. [2023-11-06 23:06:48,949 INFO L78 Accepts]: Start accepts. Automaton has 1077 states and 1145 transitions. Word has length 3 [2023-11-06 23:06:48,949 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 23:06:48,949 INFO L495 AbstractCegarLoop]: Abstraction has 1077 states and 1145 transitions. [2023-11-06 23:06:48,949 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:06:48,950 INFO L276 IsEmpty]: Start isEmpty. Operand 1077 states and 1145 transitions. [2023-11-06 23:06:48,950 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2023-11-06 23:06:48,950 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 23:06:48,950 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2023-11-06 23:06:48,962 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f238cba6-da83-43d0-be78-0cb2718c8e92/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2023-11-06 23:06:49,161 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f238cba6-da83-43d0-be78-0cb2718c8e92/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 23:06:49,161 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 532 more)] === [2023-11-06 23:06:49,163 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:06:49,164 INFO L85 PathProgramCache]: Analyzing trace with hash 47732, now seen corresponding path program 1 times [2023-11-06 23:06:49,164 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-06 23:06:49,165 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1177533767] [2023-11-06 23:06:49,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:06:49,165 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 [2023-11-06 23:06:49,165 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f238cba6-da83-43d0-be78-0cb2718c8e92/bin/uautomizer-verify-WvqO1wxjHP/mathsat [2023-11-06 23:06:49,167 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f238cba6-da83-43d0-be78-0cb2718c8e92/bin/uautomizer-verify-WvqO1wxjHP/mathsat -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) [2023-11-06 23:06:49,173 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f238cba6-da83-43d0-be78-0cb2718c8e92/bin/uautomizer-verify-WvqO1wxjHP/mathsat -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 [2023-11-06 23:06:49,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:06:49,302 INFO L262 TraceCheckSpWp]: Trace formula consists of 24 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-06 23:06:49,306 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 23:06:49,322 INFO L351 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 [2023-11-06 23:06:49,335 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 23:06:49,336 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 23:06:49,336 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-06 23:06:49,341 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1177533767] [2023-11-06 23:06:49,342 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1177533767] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:06:49,343 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 23:06:49,343 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 23:06:49,344 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1922232655] [2023-11-06 23:06:49,344 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:06:49,346 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 23:06:49,346 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-06 23:06:49,347 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 23:06:49,347 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 23:06:49,347 INFO L87 Difference]: Start difference. First operand 1077 states and 1145 transitions. Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:06:53,389 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 23:06:53,389 INFO L93 Difference]: Finished difference Result 1499 states and 1610 transitions. [2023-11-06 23:06:53,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 23:06:53,390 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2023-11-06 23:06:53,390 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 23:06:53,398 INFO L225 Difference]: With dead ends: 1499 [2023-11-06 23:06:53,398 INFO L226 Difference]: Without dead ends: 1499 [2023-11-06 23:06:53,399 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 23:06:53,400 INFO L413 NwaCegarLoop]: 949 mSDtfsCounter, 454 mSDsluCounter, 606 mSDsCounter, 0 mSdLazyCounter, 716 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 459 SdHoareTripleChecker+Valid, 1555 SdHoareTripleChecker+Invalid, 721 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 716 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.0s IncrementalHoareTripleChecker+Time [2023-11-06 23:06:53,401 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [459 Valid, 1555 Invalid, 721 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 716 Invalid, 0 Unknown, 0 Unchecked, 4.0s Time] [2023-11-06 23:06:53,405 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1499 states. [2023-11-06 23:06:53,433 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1499 to 1212. [2023-11-06 23:06:53,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1212 states, 679 states have (on average 2.0147275405007363) internal successors, (1368), 1205 states have internal predecessors, (1368), 15 states have call successors, (15), 3 states have call predecessors, (15), 2 states have return successors, (13), 5 states have call predecessors, (13), 13 states have call successors, (13) [2023-11-06 23:06:53,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1212 states to 1212 states and 1396 transitions. [2023-11-06 23:06:53,443 INFO L78 Accepts]: Start accepts. Automaton has 1212 states and 1396 transitions. Word has length 3 [2023-11-06 23:06:53,443 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 23:06:53,443 INFO L495 AbstractCegarLoop]: Abstraction has 1212 states and 1396 transitions. [2023-11-06 23:06:53,444 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:06:53,444 INFO L276 IsEmpty]: Start isEmpty. Operand 1212 states and 1396 transitions. [2023-11-06 23:06:53,444 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2023-11-06 23:06:53,444 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 23:06:53,445 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-06 23:06:53,459 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f238cba6-da83-43d0-be78-0cb2718c8e92/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2023-11-06 23:06:53,652 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f238cba6-da83-43d0-be78-0cb2718c8e92/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 23:06:53,652 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 532 more)] === [2023-11-06 23:06:53,652 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:06:53,653 INFO L85 PathProgramCache]: Analyzing trace with hash 1130822653, now seen corresponding path program 1 times [2023-11-06 23:06:53,653 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-06 23:06:53,654 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2007593382] [2023-11-06 23:06:53,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:06:53,654 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 [2023-11-06 23:06:53,654 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f238cba6-da83-43d0-be78-0cb2718c8e92/bin/uautomizer-verify-WvqO1wxjHP/mathsat [2023-11-06 23:06:53,662 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f238cba6-da83-43d0-be78-0cb2718c8e92/bin/uautomizer-verify-WvqO1wxjHP/mathsat -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) [2023-11-06 23:06:53,733 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f238cba6-da83-43d0-be78-0cb2718c8e92/bin/uautomizer-verify-WvqO1wxjHP/mathsat -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 [2023-11-06 23:06:53,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:06:53,885 INFO L262 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-06 23:06:53,889 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 23:06:53,909 INFO L351 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 [2023-11-06 23:06:53,917 INFO L351 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 [2023-11-06 23:06:54,018 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 23:06:54,020 INFO L351 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 [2023-11-06 23:06:54,045 INFO L322 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2023-11-06 23:06:54,046 INFO L351 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 [2023-11-06 23:06:54,073 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 23:06:54,073 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 23:06:54,074 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-06 23:06:54,074 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2007593382] [2023-11-06 23:06:54,078 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2007593382] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:06:54,078 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 23:06:54,078 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 23:06:54,079 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [375221130] [2023-11-06 23:06:54,079 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:06:54,079 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 23:06:54,079 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-06 23:06:54,080 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 23:06:54,081 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-06 23:06:54,081 INFO L87 Difference]: Start difference. First operand 1212 states and 1396 transitions. Second operand has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:06:58,168 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 23:06:58,168 INFO L93 Difference]: Finished difference Result 1381 states and 1573 transitions. [2023-11-06 23:06:58,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-06 23:06:58,168 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2023-11-06 23:06:58,169 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 23:06:58,177 INFO L225 Difference]: With dead ends: 1381 [2023-11-06 23:06:58,178 INFO L226 Difference]: Without dead ends: 1381 [2023-11-06 23:06:58,178 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-06 23:06:58,182 INFO L413 NwaCegarLoop]: 393 mSDtfsCounter, 2259 mSDsluCounter, 88 mSDsCounter, 0 mSdLazyCounter, 966 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2267 SdHoareTripleChecker+Valid, 481 SdHoareTripleChecker+Invalid, 994 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 966 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.0s IncrementalHoareTripleChecker+Time [2023-11-06 23:06:58,182 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2267 Valid, 481 Invalid, 994 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 966 Invalid, 0 Unknown, 0 Unchecked, 4.0s Time] [2023-11-06 23:06:58,186 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1381 states. [2023-11-06 23:06:58,209 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1381 to 1066. [2023-11-06 23:06:58,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1066 states, 548 states have (on average 2.0346715328467155) internal successors, (1115), 1059 states have internal predecessors, (1115), 10 states have call successors, (10), 3 states have call predecessors, (10), 2 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) [2023-11-06 23:06:58,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1066 states to 1066 states and 1133 transitions. [2023-11-06 23:06:58,217 INFO L78 Accepts]: Start accepts. Automaton has 1066 states and 1133 transitions. Word has length 7 [2023-11-06 23:06:58,218 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 23:06:58,218 INFO L495 AbstractCegarLoop]: Abstraction has 1066 states and 1133 transitions. [2023-11-06 23:06:58,218 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:06:58,218 INFO L276 IsEmpty]: Start isEmpty. Operand 1066 states and 1133 transitions. [2023-11-06 23:06:58,219 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2023-11-06 23:06:58,219 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 23:06:58,219 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 23:06:58,237 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f238cba6-da83-43d0-be78-0cb2718c8e92/bin/uautomizer-verify-WvqO1wxjHP/mathsat -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 [2023-11-06 23:06:58,431 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f238cba6-da83-43d0-be78-0cb2718c8e92/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 23:06:58,432 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 532 more)] === [2023-11-06 23:06:58,432 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:06:58,432 INFO L85 PathProgramCache]: Analyzing trace with hash 695763858, now seen corresponding path program 1 times [2023-11-06 23:06:58,433 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-06 23:06:58,433 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [612182396] [2023-11-06 23:06:58,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:06:58,433 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 [2023-11-06 23:06:58,434 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f238cba6-da83-43d0-be78-0cb2718c8e92/bin/uautomizer-verify-WvqO1wxjHP/mathsat [2023-11-06 23:06:58,435 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f238cba6-da83-43d0-be78-0cb2718c8e92/bin/uautomizer-verify-WvqO1wxjHP/mathsat -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) [2023-11-06 23:06:58,442 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f238cba6-da83-43d0-be78-0cb2718c8e92/bin/uautomizer-verify-WvqO1wxjHP/mathsat -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 [2023-11-06 23:06:58,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:06:58,595 INFO L262 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-06 23:06:58,598 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 23:06:58,607 INFO L351 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 [2023-11-06 23:06:58,621 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 23:06:58,621 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 23:06:58,621 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-06 23:06:58,622 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [612182396] [2023-11-06 23:06:58,622 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [612182396] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:06:58,622 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 23:06:58,622 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 23:06:58,623 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [661276038] [2023-11-06 23:06:58,623 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:06:58,623 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 23:06:58,624 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-06 23:06:58,624 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 23:06:58,625 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 23:06:58,625 INFO L87 Difference]: Start difference. First operand 1066 states and 1133 transitions. Second operand has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:07:01,266 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 23:07:01,266 INFO L93 Difference]: Finished difference Result 1244 states and 1343 transitions. [2023-11-06 23:07:01,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 23:07:01,269 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2023-11-06 23:07:01,269 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 23:07:01,277 INFO L225 Difference]: With dead ends: 1244 [2023-11-06 23:07:01,278 INFO L226 Difference]: Without dead ends: 1244 [2023-11-06 23:07:01,278 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 23:07:01,279 INFO L413 NwaCegarLoop]: 916 mSDtfsCounter, 818 mSDsluCounter, 287 mSDsCounter, 0 mSdLazyCounter, 635 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 826 SdHoareTripleChecker+Valid, 1203 SdHoareTripleChecker+Invalid, 686 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 635 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2023-11-06 23:07:01,280 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [826 Valid, 1203 Invalid, 686 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 635 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2023-11-06 23:07:01,283 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1244 states. [2023-11-06 23:07:01,304 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1244 to 1019. [2023-11-06 23:07:01,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1019 states, 548 states have (on average 1.948905109489051) internal successors, (1068), 1012 states have internal predecessors, (1068), 10 states have call successors, (10), 3 states have call predecessors, (10), 2 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) [2023-11-06 23:07:01,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1019 states to 1019 states and 1086 transitions. [2023-11-06 23:07:01,312 INFO L78 Accepts]: Start accepts. Automaton has 1019 states and 1086 transitions. Word has length 8 [2023-11-06 23:07:01,312 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 23:07:01,313 INFO L495 AbstractCegarLoop]: Abstraction has 1019 states and 1086 transitions. [2023-11-06 23:07:01,313 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:07:01,313 INFO L276 IsEmpty]: Start isEmpty. Operand 1019 states and 1086 transitions. [2023-11-06 23:07:01,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2023-11-06 23:07:01,314 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 23:07:01,314 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 23:07:01,327 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f238cba6-da83-43d0-be78-0cb2718c8e92/bin/uautomizer-verify-WvqO1wxjHP/mathsat -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 [2023-11-06 23:07:01,526 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f238cba6-da83-43d0-be78-0cb2718c8e92/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 23:07:01,526 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 532 more)] === [2023-11-06 23:07:01,527 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:07:01,527 INFO L85 PathProgramCache]: Analyzing trace with hash 695763859, now seen corresponding path program 1 times [2023-11-06 23:07:01,527 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-06 23:07:01,527 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1395862233] [2023-11-06 23:07:01,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:07:01,528 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 [2023-11-06 23:07:01,528 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f238cba6-da83-43d0-be78-0cb2718c8e92/bin/uautomizer-verify-WvqO1wxjHP/mathsat [2023-11-06 23:07:01,529 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f238cba6-da83-43d0-be78-0cb2718c8e92/bin/uautomizer-verify-WvqO1wxjHP/mathsat -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) [2023-11-06 23:07:01,533 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f238cba6-da83-43d0-be78-0cb2718c8e92/bin/uautomizer-verify-WvqO1wxjHP/mathsat -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 [2023-11-06 23:07:01,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:07:01,674 INFO L262 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-06 23:07:01,677 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 23:07:01,688 INFO L351 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 [2023-11-06 23:07:01,721 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 23:07:01,722 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 23:07:01,722 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-06 23:07:01,722 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1395862233] [2023-11-06 23:07:01,722 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1395862233] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:07:01,725 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 23:07:01,726 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 23:07:01,726 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [356747164] [2023-11-06 23:07:01,727 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:07:01,727 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 23:07:01,727 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-06 23:07:01,730 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 23:07:01,730 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 23:07:01,731 INFO L87 Difference]: Start difference. First operand 1019 states and 1086 transitions. Second operand has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:07:05,504 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 23:07:05,504 INFO L93 Difference]: Finished difference Result 1312 states and 1414 transitions. [2023-11-06 23:07:05,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 23:07:05,505 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2023-11-06 23:07:05,506 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 23:07:05,513 INFO L225 Difference]: With dead ends: 1312 [2023-11-06 23:07:05,513 INFO L226 Difference]: Without dead ends: 1312 [2023-11-06 23:07:05,513 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 23:07:05,514 INFO L413 NwaCegarLoop]: 1108 mSDtfsCounter, 505 mSDsluCounter, 451 mSDsCounter, 0 mSdLazyCounter, 652 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 510 SdHoareTripleChecker+Valid, 1559 SdHoareTripleChecker+Invalid, 664 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 652 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2023-11-06 23:07:05,515 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [510 Valid, 1559 Invalid, 664 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 652 Invalid, 0 Unknown, 0 Unchecked, 3.7s Time] [2023-11-06 23:07:05,518 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1312 states. [2023-11-06 23:07:05,541 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1312 to 1041. [2023-11-06 23:07:05,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1041 states, 580 states have (on average 1.9379310344827587) internal successors, (1124), 1034 states have internal predecessors, (1124), 10 states have call successors, (10), 3 states have call predecessors, (10), 2 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) [2023-11-06 23:07:05,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1041 states to 1041 states and 1142 transitions. [2023-11-06 23:07:05,548 INFO L78 Accepts]: Start accepts. Automaton has 1041 states and 1142 transitions. Word has length 8 [2023-11-06 23:07:05,548 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 23:07:05,548 INFO L495 AbstractCegarLoop]: Abstraction has 1041 states and 1142 transitions. [2023-11-06 23:07:05,549 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:07:05,549 INFO L276 IsEmpty]: Start isEmpty. Operand 1041 states and 1142 transitions. [2023-11-06 23:07:05,549 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2023-11-06 23:07:05,550 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 23:07:05,550 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 23:07:05,563 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f238cba6-da83-43d0-be78-0cb2718c8e92/bin/uautomizer-verify-WvqO1wxjHP/mathsat -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 [2023-11-06 23:07:05,762 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f238cba6-da83-43d0-be78-0cb2718c8e92/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 23:07:05,763 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr428REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 532 more)] === [2023-11-06 23:07:05,764 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:07:05,764 INFO L85 PathProgramCache]: Analyzing trace with hash -748930232, now seen corresponding path program 1 times [2023-11-06 23:07:05,764 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-06 23:07:05,764 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [625891349] [2023-11-06 23:07:05,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:07:05,765 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 [2023-11-06 23:07:05,765 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f238cba6-da83-43d0-be78-0cb2718c8e92/bin/uautomizer-verify-WvqO1wxjHP/mathsat [2023-11-06 23:07:05,766 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f238cba6-da83-43d0-be78-0cb2718c8e92/bin/uautomizer-verify-WvqO1wxjHP/mathsat -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) [2023-11-06 23:07:05,774 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f238cba6-da83-43d0-be78-0cb2718c8e92/bin/uautomizer-verify-WvqO1wxjHP/mathsat -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 [2023-11-06 23:07:05,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:07:05,964 INFO L262 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-06 23:07:05,966 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 23:07:06,051 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 23:07:06,051 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 23:07:06,052 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-06 23:07:06,052 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [625891349] [2023-11-06 23:07:06,052 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [625891349] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:07:06,052 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 23:07:06,053 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 23:07:06,053 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [79963444] [2023-11-06 23:07:06,053 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:07:06,053 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 23:07:06,054 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-06 23:07:06,054 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 23:07:06,054 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 23:07:06,055 INFO L87 Difference]: Start difference. First operand 1041 states and 1142 transitions. Second operand has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:07:06,452 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 23:07:06,452 INFO L93 Difference]: Finished difference Result 1522 states and 1669 transitions. [2023-11-06 23:07:06,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 23:07:06,453 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2023-11-06 23:07:06,454 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 23:07:06,461 INFO L225 Difference]: With dead ends: 1522 [2023-11-06 23:07:06,461 INFO L226 Difference]: Without dead ends: 1522 [2023-11-06 23:07:06,461 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 23:07:06,462 INFO L413 NwaCegarLoop]: 1136 mSDtfsCounter, 574 mSDsluCounter, 916 mSDsCounter, 0 mSdLazyCounter, 112 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 581 SdHoareTripleChecker+Valid, 2052 SdHoareTripleChecker+Invalid, 119 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 112 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-06 23:07:06,463 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [581 Valid, 2052 Invalid, 119 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 112 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-06 23:07:06,466 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1522 states. [2023-11-06 23:07:06,494 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1522 to 1228. [2023-11-06 23:07:06,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1228 states, 762 states have (on average 1.8818897637795275) internal successors, (1434), 1221 states have internal predecessors, (1434), 15 states have call successors, (15), 3 states have call predecessors, (15), 2 states have return successors, (13), 5 states have call predecessors, (13), 13 states have call successors, (13) [2023-11-06 23:07:06,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1228 states to 1228 states and 1462 transitions. [2023-11-06 23:07:06,502 INFO L78 Accepts]: Start accepts. Automaton has 1228 states and 1462 transitions. Word has length 11 [2023-11-06 23:07:06,502 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 23:07:06,503 INFO L495 AbstractCegarLoop]: Abstraction has 1228 states and 1462 transitions. [2023-11-06 23:07:06,503 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:07:06,503 INFO L276 IsEmpty]: Start isEmpty. Operand 1228 states and 1462 transitions. [2023-11-06 23:07:06,504 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2023-11-06 23:07:06,504 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 23:07:06,504 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 23:07:06,525 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f238cba6-da83-43d0-be78-0cb2718c8e92/bin/uautomizer-verify-WvqO1wxjHP/mathsat -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 [2023-11-06 23:07:06,716 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f238cba6-da83-43d0-be78-0cb2718c8e92/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 23:07:06,717 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr340REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 532 more)] === [2023-11-06 23:07:06,717 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:07:06,717 INFO L85 PathProgramCache]: Analyzing trace with hash 1459496966, now seen corresponding path program 1 times [2023-11-06 23:07:06,718 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-06 23:07:06,718 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1838078920] [2023-11-06 23:07:06,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:07:06,718 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 [2023-11-06 23:07:06,718 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f238cba6-da83-43d0-be78-0cb2718c8e92/bin/uautomizer-verify-WvqO1wxjHP/mathsat [2023-11-06 23:07:06,719 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f238cba6-da83-43d0-be78-0cb2718c8e92/bin/uautomizer-verify-WvqO1wxjHP/mathsat -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) [2023-11-06 23:07:06,720 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f238cba6-da83-43d0-be78-0cb2718c8e92/bin/uautomizer-verify-WvqO1wxjHP/mathsat -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 [2023-11-06 23:07:06,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:07:06,882 INFO L262 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-06 23:07:06,884 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 23:07:06,895 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 23:07:06,895 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 23:07:06,896 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-06 23:07:06,896 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1838078920] [2023-11-06 23:07:06,896 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1838078920] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:07:06,896 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 23:07:06,896 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 23:07:06,897 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [599311156] [2023-11-06 23:07:06,897 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:07:06,898 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 23:07:06,898 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-06 23:07:06,898 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 23:07:06,899 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 23:07:06,899 INFO L87 Difference]: Start difference. First operand 1228 states and 1462 transitions. Second operand has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:07:06,943 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 23:07:06,943 INFO L93 Difference]: Finished difference Result 1168 states and 1376 transitions. [2023-11-06 23:07:06,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 23:07:06,944 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2023-11-06 23:07:06,944 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 23:07:06,951 INFO L225 Difference]: With dead ends: 1168 [2023-11-06 23:07:06,951 INFO L226 Difference]: Without dead ends: 1168 [2023-11-06 23:07:06,952 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 23:07:06,953 INFO L413 NwaCegarLoop]: 1013 mSDtfsCounter, 81 mSDsluCounter, 941 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 81 SdHoareTripleChecker+Valid, 1954 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-06 23:07:06,954 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [81 Valid, 1954 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-06 23:07:06,957 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1168 states. [2023-11-06 23:07:06,985 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1168 to 1168. [2023-11-06 23:07:06,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1168 states, 726 states have (on average 1.856749311294766) internal successors, (1348), 1161 states have internal predecessors, (1348), 15 states have call successors, (15), 3 states have call predecessors, (15), 2 states have return successors, (13), 5 states have call predecessors, (13), 13 states have call successors, (13) [2023-11-06 23:07:06,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1168 states to 1168 states and 1376 transitions. [2023-11-06 23:07:06,994 INFO L78 Accepts]: Start accepts. Automaton has 1168 states and 1376 transitions. Word has length 13 [2023-11-06 23:07:06,995 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 23:07:06,999 INFO L495 AbstractCegarLoop]: Abstraction has 1168 states and 1376 transitions. [2023-11-06 23:07:06,999 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:07:06,999 INFO L276 IsEmpty]: Start isEmpty. Operand 1168 states and 1376 transitions. [2023-11-06 23:07:07,001 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2023-11-06 23:07:07,001 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 23:07:07,001 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 23:07:07,022 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f238cba6-da83-43d0-be78-0cb2718c8e92/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2023-11-06 23:07:07,214 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f238cba6-da83-43d0-be78-0cb2718c8e92/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 23:07:07,214 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr533ASSERT_VIOLATIONMEMORY_LEAK === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 532 more)] === [2023-11-06 23:07:07,214 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:07:07,215 INFO L85 PathProgramCache]: Analyzing trace with hash 981710096, now seen corresponding path program 1 times [2023-11-06 23:07:07,215 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-06 23:07:07,215 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1054947547] [2023-11-06 23:07:07,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:07:07,215 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 [2023-11-06 23:07:07,216 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f238cba6-da83-43d0-be78-0cb2718c8e92/bin/uautomizer-verify-WvqO1wxjHP/mathsat [2023-11-06 23:07:07,220 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f238cba6-da83-43d0-be78-0cb2718c8e92/bin/uautomizer-verify-WvqO1wxjHP/mathsat -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) [2023-11-06 23:07:07,269 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f238cba6-da83-43d0-be78-0cb2718c8e92/bin/uautomizer-verify-WvqO1wxjHP/mathsat -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 [2023-11-06 23:07:07,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:07:07,468 INFO L262 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-06 23:07:07,471 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 23:07:07,485 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-06 23:07:07,486 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-06 23:07:07,486 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-06 23:07:07,498 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 30 treesize of output 39 [2023-11-06 23:07:07,601 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-06 23:07:07,601 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 70 treesize of output 26 [2023-11-06 23:07:07,624 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 23:07:07,628 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 23:07:07,628 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-06 23:07:07,629 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1054947547] [2023-11-06 23:07:07,629 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1054947547] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:07:07,629 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 23:07:07,629 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-06 23:07:07,629 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1597409504] [2023-11-06 23:07:07,630 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:07:07,631 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 23:07:07,631 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-06 23:07:07,631 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 23:07:07,632 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-06 23:07:07,632 INFO L87 Difference]: Start difference. First operand 1168 states and 1376 transitions. Second operand has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:07:09,576 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 23:07:09,577 INFO L93 Difference]: Finished difference Result 1509 states and 1769 transitions. [2023-11-06 23:07:09,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-06 23:07:09,578 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2023-11-06 23:07:09,578 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 23:07:09,587 INFO L225 Difference]: With dead ends: 1509 [2023-11-06 23:07:09,587 INFO L226 Difference]: Without dead ends: 1509 [2023-11-06 23:07:09,588 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-06 23:07:09,589 INFO L413 NwaCegarLoop]: 991 mSDtfsCounter, 346 mSDsluCounter, 1866 mSDsCounter, 0 mSdLazyCounter, 222 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 351 SdHoareTripleChecker+Valid, 2857 SdHoareTripleChecker+Invalid, 223 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 222 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2023-11-06 23:07:09,589 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [351 Valid, 2857 Invalid, 223 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 222 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2023-11-06 23:07:09,593 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1509 states. [2023-11-06 23:07:09,623 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1509 to 1167. [2023-11-06 23:07:09,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1167 states, 725 states have (on average 1.856551724137931) internal successors, (1346), 1160 states have internal predecessors, (1346), 15 states have call successors, (15), 3 states have call predecessors, (15), 2 states have return successors, (13), 5 states have call predecessors, (13), 13 states have call successors, (13) [2023-11-06 23:07:09,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1167 states to 1167 states and 1374 transitions. [2023-11-06 23:07:09,631 INFO L78 Accepts]: Start accepts. Automaton has 1167 states and 1374 transitions. Word has length 14 [2023-11-06 23:07:09,631 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 23:07:09,631 INFO L495 AbstractCegarLoop]: Abstraction has 1167 states and 1374 transitions. [2023-11-06 23:07:09,631 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:07:09,632 INFO L276 IsEmpty]: Start isEmpty. Operand 1167 states and 1374 transitions. [2023-11-06 23:07:09,632 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2023-11-06 23:07:09,632 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 23:07:09,633 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 23:07:09,648 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f238cba6-da83-43d0-be78-0cb2718c8e92/bin/uautomizer-verify-WvqO1wxjHP/mathsat -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 [2023-11-06 23:07:09,845 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f238cba6-da83-43d0-be78-0cb2718c8e92/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 23:07:09,846 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr15REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 532 more)] === [2023-11-06 23:07:09,846 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:07:09,846 INFO L85 PathProgramCache]: Analyzing trace with hash -168464001, now seen corresponding path program 1 times [2023-11-06 23:07:09,846 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-06 23:07:09,847 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2008478789] [2023-11-06 23:07:09,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:07:09,847 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 23:07:09,847 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f238cba6-da83-43d0-be78-0cb2718c8e92/bin/uautomizer-verify-WvqO1wxjHP/mathsat [2023-11-06 23:07:09,849 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f238cba6-da83-43d0-be78-0cb2718c8e92/bin/uautomizer-verify-WvqO1wxjHP/mathsat -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) [2023-11-06 23:07:09,853 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f238cba6-da83-43d0-be78-0cb2718c8e92/bin/uautomizer-verify-WvqO1wxjHP/mathsat -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 [2023-11-06 23:07:10,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:07:10,084 INFO L262 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-06 23:07:10,087 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 23:07:10,119 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 23:07:10,119 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 23:07:10,119 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-06 23:07:10,119 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2008478789] [2023-11-06 23:07:10,119 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2008478789] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:07:10,119 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 23:07:10,120 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 23:07:10,120 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [120809586] [2023-11-06 23:07:10,120 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:07:10,120 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 23:07:10,120 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-06 23:07:10,121 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 23:07:10,121 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 23:07:10,121 INFO L87 Difference]: Start difference. First operand 1167 states and 1374 transitions. Second operand has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:07:10,157 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 23:07:10,157 INFO L93 Difference]: Finished difference Result 1107 states and 1288 transitions. [2023-11-06 23:07:10,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 23:07:10,158 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2023-11-06 23:07:10,158 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 23:07:10,164 INFO L225 Difference]: With dead ends: 1107 [2023-11-06 23:07:10,164 INFO L226 Difference]: Without dead ends: 1107 [2023-11-06 23:07:10,164 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 23:07:10,165 INFO L413 NwaCegarLoop]: 970 mSDtfsCounter, 81 mSDsluCounter, 898 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 81 SdHoareTripleChecker+Valid, 1868 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-06 23:07:10,165 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [81 Valid, 1868 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-06 23:07:10,168 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1107 states. [2023-11-06 23:07:10,186 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1107 to 1107. [2023-11-06 23:07:10,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1107 states, 689 states have (on average 1.8287373004354137) internal successors, (1260), 1100 states have internal predecessors, (1260), 15 states have call successors, (15), 3 states have call predecessors, (15), 2 states have return successors, (13), 5 states have call predecessors, (13), 13 states have call successors, (13) [2023-11-06 23:07:10,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1107 states to 1107 states and 1288 transitions. [2023-11-06 23:07:10,194 INFO L78 Accepts]: Start accepts. Automaton has 1107 states and 1288 transitions. Word has length 18 [2023-11-06 23:07:10,194 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 23:07:10,194 INFO L495 AbstractCegarLoop]: Abstraction has 1107 states and 1288 transitions. [2023-11-06 23:07:10,194 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:07:10,195 INFO L276 IsEmpty]: Start isEmpty. Operand 1107 states and 1288 transitions. [2023-11-06 23:07:10,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2023-11-06 23:07:10,195 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 23:07:10,196 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] [2023-11-06 23:07:10,215 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f238cba6-da83-43d0-be78-0cb2718c8e92/bin/uautomizer-verify-WvqO1wxjHP/mathsat -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 [2023-11-06 23:07:10,415 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f238cba6-da83-43d0-be78-0cb2718c8e92/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 23:07:10,415 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr38REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 532 more)] === [2023-11-06 23:07:10,415 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:07:10,415 INFO L85 PathProgramCache]: Analyzing trace with hash 1314847992, now seen corresponding path program 1 times [2023-11-06 23:07:10,416 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-06 23:07:10,416 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1586775595] [2023-11-06 23:07:10,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:07:10,416 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 [2023-11-06 23:07:10,416 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f238cba6-da83-43d0-be78-0cb2718c8e92/bin/uautomizer-verify-WvqO1wxjHP/mathsat [2023-11-06 23:07:10,417 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f238cba6-da83-43d0-be78-0cb2718c8e92/bin/uautomizer-verify-WvqO1wxjHP/mathsat -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) [2023-11-06 23:07:10,423 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f238cba6-da83-43d0-be78-0cb2718c8e92/bin/uautomizer-verify-WvqO1wxjHP/mathsat -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 [2023-11-06 23:07:10,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:07:10,653 INFO L262 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-06 23:07:10,656 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 23:07:10,689 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 23:07:10,690 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 23:07:10,690 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-06 23:07:10,690 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1586775595] [2023-11-06 23:07:10,690 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1586775595] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:07:10,691 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 23:07:10,691 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-06 23:07:10,691 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1517988768] [2023-11-06 23:07:10,691 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:07:10,692 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 23:07:10,692 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-06 23:07:10,692 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 23:07:10,693 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-06 23:07:10,693 INFO L87 Difference]: Start difference. First operand 1107 states and 1288 transitions. Second operand has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:07:10,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 23:07:10,798 INFO L93 Difference]: Finished difference Result 1079 states and 1232 transitions. [2023-11-06 23:07:10,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-06 23:07:10,799 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2023-11-06 23:07:10,799 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 23:07:10,806 INFO L225 Difference]: With dead ends: 1079 [2023-11-06 23:07:10,806 INFO L226 Difference]: Without dead ends: 1079 [2023-11-06 23:07:10,806 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-06 23:07:10,807 INFO L413 NwaCegarLoop]: 925 mSDtfsCounter, 62 mSDsluCounter, 1816 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 2741 SdHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-06 23:07:10,808 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [62 Valid, 2741 Invalid, 57 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-06 23:07:10,811 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1079 states. [2023-11-06 23:07:10,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1079 to 1077. [2023-11-06 23:07:10,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1077 states, 673 states have (on average 1.786032689450223) internal successors, (1202), 1070 states have internal predecessors, (1202), 15 states have call successors, (15), 3 states have call predecessors, (15), 2 states have return successors, (13), 5 states have call predecessors, (13), 13 states have call successors, (13) [2023-11-06 23:07:10,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1077 states to 1077 states and 1230 transitions. [2023-11-06 23:07:10,839 INFO L78 Accepts]: Start accepts. Automaton has 1077 states and 1230 transitions. Word has length 20 [2023-11-06 23:07:10,840 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 23:07:10,840 INFO L495 AbstractCegarLoop]: Abstraction has 1077 states and 1230 transitions. [2023-11-06 23:07:10,840 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:07:10,840 INFO L276 IsEmpty]: Start isEmpty. Operand 1077 states and 1230 transitions. [2023-11-06 23:07:10,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2023-11-06 23:07:10,843 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 23:07:10,843 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, 1] [2023-11-06 23:07:10,868 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f238cba6-da83-43d0-be78-0cb2718c8e92/bin/uautomizer-verify-WvqO1wxjHP/mathsat -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 [2023-11-06 23:07:11,058 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f238cba6-da83-43d0-be78-0cb2718c8e92/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 23:07:11,059 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr52REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 532 more)] === [2023-11-06 23:07:11,059 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:07:11,059 INFO L85 PathProgramCache]: Analyzing trace with hash 1346685766, now seen corresponding path program 1 times [2023-11-06 23:07:11,060 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-06 23:07:11,060 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2041704622] [2023-11-06 23:07:11,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:07:11,060 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 [2023-11-06 23:07:11,060 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f238cba6-da83-43d0-be78-0cb2718c8e92/bin/uautomizer-verify-WvqO1wxjHP/mathsat [2023-11-06 23:07:11,061 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f238cba6-da83-43d0-be78-0cb2718c8e92/bin/uautomizer-verify-WvqO1wxjHP/mathsat -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) [2023-11-06 23:07:11,063 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f238cba6-da83-43d0-be78-0cb2718c8e92/bin/uautomizer-verify-WvqO1wxjHP/mathsat -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 [2023-11-06 23:07:11,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:07:11,304 INFO L262 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-06 23:07:11,316 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 23:07:11,325 INFO L351 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 [2023-11-06 23:07:11,496 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 23:07:11,497 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 23:07:11,497 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-06 23:07:11,497 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2041704622] [2023-11-06 23:07:11,497 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2041704622] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:07:11,498 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 23:07:11,498 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 23:07:11,498 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [621502038] [2023-11-06 23:07:11,498 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:07:11,499 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 23:07:11,499 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-06 23:07:11,500 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 23:07:11,500 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-06 23:07:11,500 INFO L87 Difference]: Start difference. First operand 1077 states and 1230 transitions. Second operand has 4 states, 3 states have (on average 11.333333333333334) internal successors, (34), 4 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:07:14,605 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 23:07:14,605 INFO L93 Difference]: Finished difference Result 1337 states and 1566 transitions. [2023-11-06 23:07:14,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-06 23:07:14,606 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 11.333333333333334) internal successors, (34), 4 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34 [2023-11-06 23:07:14,606 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 23:07:14,613 INFO L225 Difference]: With dead ends: 1337 [2023-11-06 23:07:14,613 INFO L226 Difference]: Without dead ends: 1337 [2023-11-06 23:07:14,613 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-06 23:07:14,614 INFO L413 NwaCegarLoop]: 603 mSDtfsCounter, 700 mSDsluCounter, 700 mSDsCounter, 0 mSdLazyCounter, 1002 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 708 SdHoareTripleChecker+Valid, 1303 SdHoareTripleChecker+Invalid, 1010 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 1002 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2023-11-06 23:07:14,615 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [708 Valid, 1303 Invalid, 1010 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 1002 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2023-11-06 23:07:14,618 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1337 states. [2023-11-06 23:07:14,639 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1337 to 1073. [2023-11-06 23:07:14,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1073 states, 673 states have (on average 1.7741456166419018) internal successors, (1194), 1066 states have internal predecessors, (1194), 15 states have call successors, (15), 3 states have call predecessors, (15), 2 states have return successors, (13), 5 states have call predecessors, (13), 13 states have call successors, (13) [2023-11-06 23:07:14,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1073 states to 1073 states and 1222 transitions. [2023-11-06 23:07:14,647 INFO L78 Accepts]: Start accepts. Automaton has 1073 states and 1222 transitions. Word has length 34 [2023-11-06 23:07:14,650 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 23:07:14,651 INFO L495 AbstractCegarLoop]: Abstraction has 1073 states and 1222 transitions. [2023-11-06 23:07:14,651 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 11.333333333333334) internal successors, (34), 4 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:07:14,651 INFO L276 IsEmpty]: Start isEmpty. Operand 1073 states and 1222 transitions. [2023-11-06 23:07:14,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2023-11-06 23:07:14,654 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 23:07:14,654 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, 1] [2023-11-06 23:07:14,673 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f238cba6-da83-43d0-be78-0cb2718c8e92/bin/uautomizer-verify-WvqO1wxjHP/mathsat -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 [2023-11-06 23:07:14,869 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f238cba6-da83-43d0-be78-0cb2718c8e92/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 23:07:14,869 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr53REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 532 more)] === [2023-11-06 23:07:14,869 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:07:14,869 INFO L85 PathProgramCache]: Analyzing trace with hash 1346685767, now seen corresponding path program 1 times [2023-11-06 23:07:14,870 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-06 23:07:14,870 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [774111779] [2023-11-06 23:07:14,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:07:14,870 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 [2023-11-06 23:07:14,870 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f238cba6-da83-43d0-be78-0cb2718c8e92/bin/uautomizer-verify-WvqO1wxjHP/mathsat [2023-11-06 23:07:14,872 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f238cba6-da83-43d0-be78-0cb2718c8e92/bin/uautomizer-verify-WvqO1wxjHP/mathsat -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) [2023-11-06 23:07:14,878 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f238cba6-da83-43d0-be78-0cb2718c8e92/bin/uautomizer-verify-WvqO1wxjHP/mathsat -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 [2023-11-06 23:07:15,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:07:15,131 INFO L262 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-06 23:07:15,135 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 23:07:15,144 INFO L351 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 [2023-11-06 23:07:15,411 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 23:07:15,411 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 23:07:15,412 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-06 23:07:15,412 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [774111779] [2023-11-06 23:07:15,412 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [774111779] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:07:15,412 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 23:07:15,412 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 23:07:15,413 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1101101388] [2023-11-06 23:07:15,413 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:07:15,413 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 23:07:15,414 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-06 23:07:15,414 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 23:07:15,415 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-06 23:07:15,415 INFO L87 Difference]: Start difference. First operand 1073 states and 1222 transitions. Second operand has 4 states, 3 states have (on average 11.333333333333334) internal successors, (34), 4 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:07:19,780 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 23:07:19,781 INFO L93 Difference]: Finished difference Result 1379 states and 1573 transitions. [2023-11-06 23:07:19,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-06 23:07:19,781 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 11.333333333333334) internal successors, (34), 4 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34 [2023-11-06 23:07:19,782 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 23:07:19,788 INFO L225 Difference]: With dead ends: 1379 [2023-11-06 23:07:19,788 INFO L226 Difference]: Without dead ends: 1379 [2023-11-06 23:07:19,788 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-06 23:07:19,789 INFO L413 NwaCegarLoop]: 1085 mSDtfsCounter, 389 mSDsluCounter, 1075 mSDsCounter, 0 mSdLazyCounter, 1112 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 394 SdHoareTripleChecker+Valid, 2160 SdHoareTripleChecker+Invalid, 1115 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 1112 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.3s IncrementalHoareTripleChecker+Time [2023-11-06 23:07:19,789 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [394 Valid, 2160 Invalid, 1115 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 1112 Invalid, 0 Unknown, 0 Unchecked, 4.3s Time] [2023-11-06 23:07:19,794 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1379 states. [2023-11-06 23:07:19,812 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1379 to 1069. [2023-11-06 23:07:19,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1069 states, 673 states have (on average 1.762258543833581) internal successors, (1186), 1062 states have internal predecessors, (1186), 15 states have call successors, (15), 3 states have call predecessors, (15), 2 states have return successors, (13), 5 states have call predecessors, (13), 13 states have call successors, (13) [2023-11-06 23:07:19,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1069 states to 1069 states and 1214 transitions. [2023-11-06 23:07:19,819 INFO L78 Accepts]: Start accepts. Automaton has 1069 states and 1214 transitions. Word has length 34 [2023-11-06 23:07:19,819 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 23:07:19,819 INFO L495 AbstractCegarLoop]: Abstraction has 1069 states and 1214 transitions. [2023-11-06 23:07:19,820 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 11.333333333333334) internal successors, (34), 4 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:07:19,820 INFO L276 IsEmpty]: Start isEmpty. Operand 1069 states and 1214 transitions. [2023-11-06 23:07:19,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2023-11-06 23:07:19,822 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 23:07:19,822 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 23:07:19,837 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f238cba6-da83-43d0-be78-0cb2718c8e92/bin/uautomizer-verify-WvqO1wxjHP/mathsat -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 [2023-11-06 23:07:20,035 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f238cba6-da83-43d0-be78-0cb2718c8e92/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 23:07:20,036 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr71REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 532 more)] === [2023-11-06 23:07:20,036 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:07:20,036 INFO L85 PathProgramCache]: Analyzing trace with hash -585509776, now seen corresponding path program 1 times [2023-11-06 23:07:20,037 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-06 23:07:20,037 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1126795578] [2023-11-06 23:07:20,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:07:20,038 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 [2023-11-06 23:07:20,038 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f238cba6-da83-43d0-be78-0cb2718c8e92/bin/uautomizer-verify-WvqO1wxjHP/mathsat [2023-11-06 23:07:20,039 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f238cba6-da83-43d0-be78-0cb2718c8e92/bin/uautomizer-verify-WvqO1wxjHP/mathsat -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) [2023-11-06 23:07:20,078 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f238cba6-da83-43d0-be78-0cb2718c8e92/bin/uautomizer-verify-WvqO1wxjHP/mathsat -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 [2023-11-06 23:07:20,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:07:20,344 INFO L262 TraceCheckSpWp]: Trace formula consists of 255 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-06 23:07:20,347 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 23:07:20,414 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 23:07:20,414 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 23:07:20,415 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-06 23:07:20,415 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1126795578] [2023-11-06 23:07:20,415 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1126795578] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:07:20,416 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 23:07:20,417 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-06 23:07:20,417 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [591150979] [2023-11-06 23:07:20,417 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:07:20,418 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 23:07:20,418 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-06 23:07:20,419 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 23:07:20,419 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-06 23:07:20,420 INFO L87 Difference]: Start difference. First operand 1069 states and 1214 transitions. Second operand has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:07:20,517 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 23:07:20,517 INFO L93 Difference]: Finished difference Result 1057 states and 1194 transitions. [2023-11-06 23:07:20,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-06 23:07:20,518 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 53 [2023-11-06 23:07:20,518 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 23:07:20,525 INFO L225 Difference]: With dead ends: 1057 [2023-11-06 23:07:20,525 INFO L226 Difference]: Without dead ends: 1057 [2023-11-06 23:07:20,526 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-06 23:07:20,527 INFO L413 NwaCegarLoop]: 919 mSDtfsCounter, 31 mSDsluCounter, 1800 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 2719 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-06 23:07:20,528 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 2719 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-06 23:07:20,530 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1057 states. [2023-11-06 23:07:20,544 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1057 to 1057. [2023-11-06 23:07:20,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1057 states, 661 states have (on average 1.7639939485627836) internal successors, (1166), 1050 states have internal predecessors, (1166), 15 states have call successors, (15), 3 states have call predecessors, (15), 2 states have return successors, (13), 5 states have call predecessors, (13), 13 states have call successors, (13) [2023-11-06 23:07:20,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1057 states to 1057 states and 1194 transitions. [2023-11-06 23:07:20,551 INFO L78 Accepts]: Start accepts. Automaton has 1057 states and 1194 transitions. Word has length 53 [2023-11-06 23:07:20,553 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 23:07:20,554 INFO L495 AbstractCegarLoop]: Abstraction has 1057 states and 1194 transitions. [2023-11-06 23:07:20,554 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:07:20,554 INFO L276 IsEmpty]: Start isEmpty. Operand 1057 states and 1194 transitions. [2023-11-06 23:07:20,558 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2023-11-06 23:07:20,558 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 23:07:20,559 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 23:07:20,579 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f238cba6-da83-43d0-be78-0cb2718c8e92/bin/uautomizer-verify-WvqO1wxjHP/mathsat -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 [2023-11-06 23:07:20,779 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f238cba6-da83-43d0-be78-0cb2718c8e92/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 23:07:20,779 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr71REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 532 more)] === [2023-11-06 23:07:20,780 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:07:20,780 INFO L85 PathProgramCache]: Analyzing trace with hash -1514336476, now seen corresponding path program 1 times [2023-11-06 23:07:20,780 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-06 23:07:20,781 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1509293980] [2023-11-06 23:07:20,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:07:20,781 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 [2023-11-06 23:07:20,781 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f238cba6-da83-43d0-be78-0cb2718c8e92/bin/uautomizer-verify-WvqO1wxjHP/mathsat [2023-11-06 23:07:20,782 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f238cba6-da83-43d0-be78-0cb2718c8e92/bin/uautomizer-verify-WvqO1wxjHP/mathsat -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) [2023-11-06 23:07:20,793 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f238cba6-da83-43d0-be78-0cb2718c8e92/bin/uautomizer-verify-WvqO1wxjHP/mathsat -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 [2023-11-06 23:07:21,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:07:21,240 INFO L262 TraceCheckSpWp]: Trace formula consists of 279 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-06 23:07:21,248 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 23:07:21,262 INFO L351 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 [2023-11-06 23:07:21,272 INFO L351 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 [2023-11-06 23:07:21,912 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 23:07:21,913 INFO L351 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 [2023-11-06 23:07:21,926 INFO L322 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2023-11-06 23:07:21,927 INFO L351 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 [2023-11-06 23:07:21,941 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 23:07:21,941 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 23:07:21,941 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-06 23:07:21,941 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1509293980] [2023-11-06 23:07:21,941 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1509293980] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:07:21,942 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 23:07:21,942 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 23:07:21,942 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1138563821] [2023-11-06 23:07:21,942 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:07:21,943 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 23:07:21,943 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-06 23:07:21,943 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 23:07:21,943 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-06 23:07:21,944 INFO L87 Difference]: Start difference. First operand 1057 states and 1194 transitions. Second operand has 4 states, 3 states have (on average 20.333333333333332) internal successors, (61), 4 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:07:24,637 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 23:07:24,637 INFO L93 Difference]: Finished difference Result 1283 states and 1500 transitions. [2023-11-06 23:07:24,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-06 23:07:24,638 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 20.333333333333332) internal successors, (61), 4 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 61 [2023-11-06 23:07:24,638 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 23:07:24,644 INFO L225 Difference]: With dead ends: 1283 [2023-11-06 23:07:24,644 INFO L226 Difference]: Without dead ends: 1283 [2023-11-06 23:07:24,644 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-06 23:07:24,645 INFO L413 NwaCegarLoop]: 480 mSDtfsCounter, 1387 mSDsluCounter, 231 mSDsCounter, 0 mSdLazyCounter, 646 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1400 SdHoareTripleChecker+Valid, 711 SdHoareTripleChecker+Invalid, 699 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 646 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2023-11-06 23:07:24,645 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1400 Valid, 711 Invalid, 699 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 646 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2023-11-06 23:07:24,648 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1283 states. [2023-11-06 23:07:24,662 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1283 to 987. [2023-11-06 23:07:24,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 987 states, 629 states have (on average 1.6883942766295708) internal successors, (1062), 980 states have internal predecessors, (1062), 15 states have call successors, (15), 3 states have call predecessors, (15), 2 states have return successors, (13), 5 states have call predecessors, (13), 13 states have call successors, (13) [2023-11-06 23:07:24,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 987 states to 987 states and 1090 transitions. [2023-11-06 23:07:24,666 INFO L78 Accepts]: Start accepts. Automaton has 987 states and 1090 transitions. Word has length 61 [2023-11-06 23:07:24,666 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 23:07:24,667 INFO L495 AbstractCegarLoop]: Abstraction has 987 states and 1090 transitions. [2023-11-06 23:07:24,667 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 20.333333333333332) internal successors, (61), 4 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:07:24,667 INFO L276 IsEmpty]: Start isEmpty. Operand 987 states and 1090 transitions. [2023-11-06 23:07:24,668 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2023-11-06 23:07:24,668 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 23:07:24,668 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 23:07:24,686 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f238cba6-da83-43d0-be78-0cb2718c8e92/bin/uautomizer-verify-WvqO1wxjHP/mathsat -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 [2023-11-06 23:07:24,882 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f238cba6-da83-43d0-be78-0cb2718c8e92/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 23:07:24,883 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr76REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 532 more)] === [2023-11-06 23:07:24,883 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:07:24,883 INFO L85 PathProgramCache]: Analyzing trace with hash 1287372127, now seen corresponding path program 1 times [2023-11-06 23:07:24,884 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-06 23:07:24,884 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [762329972] [2023-11-06 23:07:24,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:07:24,884 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 [2023-11-06 23:07:24,884 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f238cba6-da83-43d0-be78-0cb2718c8e92/bin/uautomizer-verify-WvqO1wxjHP/mathsat [2023-11-06 23:07:24,885 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f238cba6-da83-43d0-be78-0cb2718c8e92/bin/uautomizer-verify-WvqO1wxjHP/mathsat -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) [2023-11-06 23:07:24,924 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f238cba6-da83-43d0-be78-0cb2718c8e92/bin/uautomizer-verify-WvqO1wxjHP/mathsat -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 [2023-11-06 23:07:25,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:07:25,217 INFO L262 TraceCheckSpWp]: Trace formula consists of 306 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-06 23:07:25,220 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 23:07:25,230 INFO L351 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 [2023-11-06 23:07:25,252 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 19 treesize of output 1 [2023-11-06 23:07:25,299 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2023-11-06 23:07:25,317 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 23:07:25,317 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 23:07:25,317 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-06 23:07:25,317 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [762329972] [2023-11-06 23:07:25,317 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [762329972] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:07:25,317 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 23:07:25,318 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-06 23:07:25,318 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1622659102] [2023-11-06 23:07:25,318 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:07:25,318 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-06 23:07:25,318 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-06 23:07:25,319 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-06 23:07:25,319 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-06 23:07:25,319 INFO L87 Difference]: Start difference. First operand 987 states and 1090 transitions. Second operand has 5 states, 4 states have (on average 16.5) internal successors, (66), 5 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:07:28,239 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 23:07:28,239 INFO L93 Difference]: Finished difference Result 986 states and 1089 transitions. [2023-11-06 23:07:28,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-06 23:07:28,240 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 16.5) internal successors, (66), 5 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2023-11-06 23:07:28,240 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 23:07:28,244 INFO L225 Difference]: With dead ends: 986 [2023-11-06 23:07:28,244 INFO L226 Difference]: Without dead ends: 986 [2023-11-06 23:07:28,245 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-11-06 23:07:28,245 INFO L413 NwaCegarLoop]: 892 mSDtfsCounter, 4 mSDsluCounter, 1438 mSDsCounter, 0 mSdLazyCounter, 1243 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 2330 SdHoareTripleChecker+Invalid, 1244 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1243 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2023-11-06 23:07:28,246 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 2330 Invalid, 1244 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1243 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2023-11-06 23:07:28,248 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 986 states. [2023-11-06 23:07:28,259 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 986 to 986. [2023-11-06 23:07:28,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 986 states, 629 states have (on average 1.6868044515103338) internal successors, (1061), 979 states have internal predecessors, (1061), 15 states have call successors, (15), 3 states have call predecessors, (15), 2 states have return successors, (13), 5 states have call predecessors, (13), 13 states have call successors, (13) [2023-11-06 23:07:28,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 986 states to 986 states and 1089 transitions. [2023-11-06 23:07:28,263 INFO L78 Accepts]: Start accepts. Automaton has 986 states and 1089 transitions. Word has length 66 [2023-11-06 23:07:28,264 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 23:07:28,264 INFO L495 AbstractCegarLoop]: Abstraction has 986 states and 1089 transitions. [2023-11-06 23:07:28,264 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 16.5) internal successors, (66), 5 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:07:28,264 INFO L276 IsEmpty]: Start isEmpty. Operand 986 states and 1089 transitions. [2023-11-06 23:07:28,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2023-11-06 23:07:28,265 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 23:07:28,265 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 23:07:28,284 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f238cba6-da83-43d0-be78-0cb2718c8e92/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Ended with exit code 0 [2023-11-06 23:07:28,479 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f238cba6-da83-43d0-be78-0cb2718c8e92/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 23:07:28,479 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr77REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 532 more)] === [2023-11-06 23:07:28,480 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:07:28,480 INFO L85 PathProgramCache]: Analyzing trace with hash 1287372128, now seen corresponding path program 1 times [2023-11-06 23:07:28,480 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-06 23:07:28,480 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1389446321] [2023-11-06 23:07:28,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:07:28,481 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 [2023-11-06 23:07:28,481 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f238cba6-da83-43d0-be78-0cb2718c8e92/bin/uautomizer-verify-WvqO1wxjHP/mathsat [2023-11-06 23:07:28,482 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f238cba6-da83-43d0-be78-0cb2718c8e92/bin/uautomizer-verify-WvqO1wxjHP/mathsat -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) [2023-11-06 23:07:28,521 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f238cba6-da83-43d0-be78-0cb2718c8e92/bin/uautomizer-verify-WvqO1wxjHP/mathsat -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 [2023-11-06 23:07:28,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:07:28,808 INFO L262 TraceCheckSpWp]: Trace formula consists of 306 conjuncts, 11 conjunts are in the unsatisfiable core [2023-11-06 23:07:28,813 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 23:07:28,833 INFO L351 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 [2023-11-06 23:07:28,853 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 19 treesize of output 1 [2023-11-06 23:07:28,859 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 13 treesize of output 9 [2023-11-06 23:07:28,915 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 9 [2023-11-06 23:07:28,938 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 23:07:28,938 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 23:07:28,938 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-06 23:07:28,938 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1389446321] [2023-11-06 23:07:28,939 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1389446321] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:07:28,939 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 23:07:28,939 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-06 23:07:28,939 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1053656707] [2023-11-06 23:07:28,939 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:07:28,940 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-06 23:07:28,940 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-06 23:07:28,940 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-06 23:07:28,941 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-06 23:07:28,941 INFO L87 Difference]: Start difference. First operand 986 states and 1089 transitions. Second operand has 5 states, 4 states have (on average 16.5) internal successors, (66), 5 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:07:32,805 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 23:07:32,805 INFO L93 Difference]: Finished difference Result 985 states and 1088 transitions. [2023-11-06 23:07:32,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-06 23:07:32,806 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 16.5) internal successors, (66), 5 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2023-11-06 23:07:32,806 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 23:07:32,810 INFO L225 Difference]: With dead ends: 985 [2023-11-06 23:07:32,810 INFO L226 Difference]: Without dead ends: 985 [2023-11-06 23:07:32,810 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-11-06 23:07:32,811 INFO L413 NwaCegarLoop]: 892 mSDtfsCounter, 2 mSDsluCounter, 1474 mSDsCounter, 0 mSdLazyCounter, 1205 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 2366 SdHoareTripleChecker+Invalid, 1206 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1205 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.8s IncrementalHoareTripleChecker+Time [2023-11-06 23:07:32,811 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 2366 Invalid, 1206 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1205 Invalid, 0 Unknown, 0 Unchecked, 3.8s Time] [2023-11-06 23:07:32,813 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 985 states. [2023-11-06 23:07:32,824 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 985 to 985. [2023-11-06 23:07:32,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 985 states, 628 states have (on average 1.6878980891719746) internal successors, (1060), 978 states have internal predecessors, (1060), 15 states have call successors, (15), 3 states have call predecessors, (15), 2 states have return successors, (13), 5 states have call predecessors, (13), 13 states have call successors, (13) [2023-11-06 23:07:32,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 985 states to 985 states and 1088 transitions. [2023-11-06 23:07:32,828 INFO L78 Accepts]: Start accepts. Automaton has 985 states and 1088 transitions. Word has length 66 [2023-11-06 23:07:32,829 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 23:07:32,829 INFO L495 AbstractCegarLoop]: Abstraction has 985 states and 1088 transitions. [2023-11-06 23:07:32,829 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 16.5) internal successors, (66), 5 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:07:32,829 INFO L276 IsEmpty]: Start isEmpty. Operand 985 states and 1088 transitions. [2023-11-06 23:07:32,830 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2023-11-06 23:07:32,830 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 23:07:32,830 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 23:07:32,845 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f238cba6-da83-43d0-be78-0cb2718c8e92/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (17)] Ended with exit code 0 [2023-11-06 23:07:33,045 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f238cba6-da83-43d0-be78-0cb2718c8e92/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 23:07:33,045 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr80REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 532 more)] === [2023-11-06 23:07:33,046 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:07:33,046 INFO L85 PathProgramCache]: Analyzing trace with hash 1465663590, now seen corresponding path program 1 times [2023-11-06 23:07:33,046 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-06 23:07:33,046 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1440540529] [2023-11-06 23:07:33,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:07:33,047 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 [2023-11-06 23:07:33,047 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f238cba6-da83-43d0-be78-0cb2718c8e92/bin/uautomizer-verify-WvqO1wxjHP/mathsat [2023-11-06 23:07:33,048 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f238cba6-da83-43d0-be78-0cb2718c8e92/bin/uautomizer-verify-WvqO1wxjHP/mathsat -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) [2023-11-06 23:07:33,092 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f238cba6-da83-43d0-be78-0cb2718c8e92/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2023-11-06 23:07:33,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:07:33,432 INFO L262 TraceCheckSpWp]: Trace formula consists of 333 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-06 23:07:33,435 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 23:07:33,461 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 23:07:33,461 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 23:07:33,462 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-06 23:07:33,462 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1440540529] [2023-11-06 23:07:33,462 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1440540529] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:07:33,462 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 23:07:33,462 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-06 23:07:33,463 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [953319611] [2023-11-06 23:07:33,463 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:07:33,463 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 23:07:33,464 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-06 23:07:33,464 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 23:07:33,465 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-06 23:07:33,465 INFO L87 Difference]: Start difference. First operand 985 states and 1088 transitions. Second operand has 4 states, 4 states have (on average 18.0) internal successors, (72), 4 states have internal predecessors, (72), 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) [2023-11-06 23:07:33,522 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 23:07:33,523 INFO L93 Difference]: Finished difference Result 988 states and 1092 transitions. [2023-11-06 23:07:33,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-06 23:07:33,524 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.0) internal successors, (72), 4 states have internal predecessors, (72), 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 74 [2023-11-06 23:07:33,524 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 23:07:33,530 INFO L225 Difference]: With dead ends: 988 [2023-11-06 23:07:33,531 INFO L226 Difference]: Without dead ends: 988 [2023-11-06 23:07:33,531 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 71 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-06 23:07:33,532 INFO L413 NwaCegarLoop]: 892 mSDtfsCounter, 2 mSDsluCounter, 1779 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 2671 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-06 23:07:33,532 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 2671 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-06 23:07:33,534 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 988 states. [2023-11-06 23:07:33,553 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 988 to 988. [2023-11-06 23:07:33,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 988 states, 630 states have (on average 1.6873015873015873) internal successors, (1063), 981 states have internal predecessors, (1063), 15 states have call successors, (15), 3 states have call predecessors, (15), 3 states have return successors, (14), 5 states have call predecessors, (14), 13 states have call successors, (14) [2023-11-06 23:07:33,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 988 states to 988 states and 1092 transitions. [2023-11-06 23:07:33,557 INFO L78 Accepts]: Start accepts. Automaton has 988 states and 1092 transitions. Word has length 74 [2023-11-06 23:07:33,557 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 23:07:33,558 INFO L495 AbstractCegarLoop]: Abstraction has 988 states and 1092 transitions. [2023-11-06 23:07:33,558 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.0) internal successors, (72), 4 states have internal predecessors, (72), 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) [2023-11-06 23:07:33,558 INFO L276 IsEmpty]: Start isEmpty. Operand 988 states and 1092 transitions. [2023-11-06 23:07:33,559 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2023-11-06 23:07:33,559 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 23:07:33,559 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 23:07:33,579 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f238cba6-da83-43d0-be78-0cb2718c8e92/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2023-11-06 23:07:33,779 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f238cba6-da83-43d0-be78-0cb2718c8e92/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 23:07:33,780 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr80REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 532 more)] === [2023-11-06 23:07:33,780 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:07:33,781 INFO L85 PathProgramCache]: Analyzing trace with hash -855192866, now seen corresponding path program 1 times [2023-11-06 23:07:33,781 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-06 23:07:33,781 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1802902476] [2023-11-06 23:07:33,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:07:33,781 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 [2023-11-06 23:07:33,782 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f238cba6-da83-43d0-be78-0cb2718c8e92/bin/uautomizer-verify-WvqO1wxjHP/mathsat [2023-11-06 23:07:33,783 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f238cba6-da83-43d0-be78-0cb2718c8e92/bin/uautomizer-verify-WvqO1wxjHP/mathsat -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) [2023-11-06 23:07:33,820 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f238cba6-da83-43d0-be78-0cb2718c8e92/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2023-11-06 23:07:34,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:07:34,196 INFO L262 TraceCheckSpWp]: Trace formula consists of 344 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-06 23:07:34,198 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 23:07:34,230 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 23:07:34,230 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 23:07:34,328 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 23:07:34,328 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-06 23:07:34,328 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1802902476] [2023-11-06 23:07:34,328 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1802902476] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 23:07:34,328 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-06 23:07:34,328 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2023-11-06 23:07:34,328 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1052701659] [2023-11-06 23:07:34,329 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-06 23:07:34,329 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-06 23:07:34,334 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-06 23:07:34,334 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-06 23:07:34,335 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-11-06 23:07:34,335 INFO L87 Difference]: Start difference. First operand 988 states and 1092 transitions. Second operand has 8 states, 8 states have (on average 9.625) internal successors, (77), 8 states have internal predecessors, (77), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-06 23:07:34,563 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 23:07:34,563 INFO L93 Difference]: Finished difference Result 1000 states and 1109 transitions. [2023-11-06 23:07:34,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-06 23:07:34,564 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.625) internal successors, (77), 8 states have internal predecessors, (77), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 75 [2023-11-06 23:07:34,564 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 23:07:34,571 INFO L225 Difference]: With dead ends: 1000 [2023-11-06 23:07:34,571 INFO L226 Difference]: Without dead ends: 1000 [2023-11-06 23:07:34,571 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 153 GetRequests, 142 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=62, Invalid=94, Unknown=0, NotChecked=0, Total=156 [2023-11-06 23:07:34,572 INFO L413 NwaCegarLoop]: 893 mSDtfsCounter, 12 mSDsluCounter, 3556 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 4449 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 57 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-06 23:07:34,572 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 4449 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 57 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-06 23:07:34,575 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1000 states. [2023-11-06 23:07:34,592 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1000 to 998. [2023-11-06 23:07:34,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 998 states, 639 states have (on average 1.6870109546165883) internal successors, (1078), 990 states have internal predecessors, (1078), 15 states have call successors, (15), 4 states have call predecessors, (15), 4 states have return successors, (14), 5 states have call predecessors, (14), 13 states have call successors, (14) [2023-11-06 23:07:34,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 998 states to 998 states and 1107 transitions. [2023-11-06 23:07:34,598 INFO L78 Accepts]: Start accepts. Automaton has 998 states and 1107 transitions. Word has length 75 [2023-11-06 23:07:34,598 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 23:07:34,598 INFO L495 AbstractCegarLoop]: Abstraction has 998 states and 1107 transitions. [2023-11-06 23:07:34,598 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.625) internal successors, (77), 8 states have internal predecessors, (77), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-06 23:07:34,599 INFO L276 IsEmpty]: Start isEmpty. Operand 998 states and 1107 transitions. [2023-11-06 23:07:34,604 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2023-11-06 23:07:34,604 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 23:07:34,605 INFO L195 NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 23:07:34,626 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f238cba6-da83-43d0-be78-0cb2718c8e92/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2023-11-06 23:07:34,820 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f238cba6-da83-43d0-be78-0cb2718c8e92/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 23:07:34,821 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr80REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 532 more)] === [2023-11-06 23:07:34,821 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:07:34,821 INFO L85 PathProgramCache]: Analyzing trace with hash -1293476250, now seen corresponding path program 2 times [2023-11-06 23:07:34,822 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-06 23:07:34,822 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1129615770] [2023-11-06 23:07:34,822 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-06 23:07:34,822 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 [2023-11-06 23:07:34,822 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f238cba6-da83-43d0-be78-0cb2718c8e92/bin/uautomizer-verify-WvqO1wxjHP/mathsat [2023-11-06 23:07:34,824 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f238cba6-da83-43d0-be78-0cb2718c8e92/bin/uautomizer-verify-WvqO1wxjHP/mathsat -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) [2023-11-06 23:07:34,863 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f238cba6-da83-43d0-be78-0cb2718c8e92/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2023-11-06 23:07:35,351 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-06 23:07:35,351 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-06 23:07:35,367 INFO L262 TraceCheckSpWp]: Trace formula consists of 377 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-06 23:07:35,369 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 23:07:35,428 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 23:07:35,429 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 23:07:35,639 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 23:07:35,640 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-06 23:07:35,640 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1129615770] [2023-11-06 23:07:35,640 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1129615770] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 23:07:35,640 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-06 23:07:35,640 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 14 [2023-11-06 23:07:35,641 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1462237441] [2023-11-06 23:07:35,641 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-06 23:07:35,641 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-11-06 23:07:35,642 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-06 23:07:35,642 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-11-06 23:07:35,643 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=121, Unknown=0, NotChecked=0, Total=182 [2023-11-06 23:07:35,643 INFO L87 Difference]: Start difference. First operand 998 states and 1107 transitions. Second operand has 14 states, 14 states have (on average 5.928571428571429) internal successors, (83), 14 states have internal predecessors, (83), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-06 23:07:36,303 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 23:07:36,303 INFO L93 Difference]: Finished difference Result 1019 states and 1135 transitions. [2023-11-06 23:07:36,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2023-11-06 23:07:36,304 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 5.928571428571429) internal successors, (83), 14 states have internal predecessors, (83), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 78 [2023-11-06 23:07:36,304 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 23:07:36,310 INFO L225 Difference]: With dead ends: 1019 [2023-11-06 23:07:36,310 INFO L226 Difference]: Without dead ends: 1015 [2023-11-06 23:07:36,310 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 168 GetRequests, 142 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 91 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=257, Invalid=499, Unknown=0, NotChecked=0, Total=756 [2023-11-06 23:07:36,311 INFO L413 NwaCegarLoop]: 896 mSDtfsCounter, 24 mSDsluCounter, 4464 mSDsCounter, 0 mSdLazyCounter, 192 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 5360 SdHoareTripleChecker+Invalid, 212 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 192 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-06 23:07:36,311 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 5360 Invalid, 212 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 192 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-06 23:07:36,313 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1015 states. [2023-11-06 23:07:36,326 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1015 to 1007. [2023-11-06 23:07:36,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1007 states, 648 states have (on average 1.6820987654320987) internal successors, (1090), 999 states have internal predecessors, (1090), 15 states have call successors, (15), 4 states have call predecessors, (15), 4 states have return successors, (14), 5 states have call predecessors, (14), 13 states have call successors, (14) [2023-11-06 23:07:36,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1007 states to 1007 states and 1119 transitions. [2023-11-06 23:07:36,331 INFO L78 Accepts]: Start accepts. Automaton has 1007 states and 1119 transitions. Word has length 78 [2023-11-06 23:07:36,332 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 23:07:36,332 INFO L495 AbstractCegarLoop]: Abstraction has 1007 states and 1119 transitions. [2023-11-06 23:07:36,332 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 5.928571428571429) internal successors, (83), 14 states have internal predecessors, (83), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-06 23:07:36,332 INFO L276 IsEmpty]: Start isEmpty. Operand 1007 states and 1119 transitions. [2023-11-06 23:07:36,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2023-11-06 23:07:36,333 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 23:07:36,333 INFO L195 NwaCegarLoop]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 23:07:36,353 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f238cba6-da83-43d0-be78-0cb2718c8e92/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (20)] Ended with exit code 0 [2023-11-06 23:07:36,549 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f238cba6-da83-43d0-be78-0cb2718c8e92/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 23:07:36,549 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr80REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 532 more)] === [2023-11-06 23:07:36,549 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:07:36,550 INFO L85 PathProgramCache]: Analyzing trace with hash 1684360038, now seen corresponding path program 3 times [2023-11-06 23:07:36,550 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-06 23:07:36,550 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1797826180] [2023-11-06 23:07:36,550 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-06 23:07:36,551 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 [2023-11-06 23:07:36,551 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f238cba6-da83-43d0-be78-0cb2718c8e92/bin/uautomizer-verify-WvqO1wxjHP/mathsat [2023-11-06 23:07:36,551 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f238cba6-da83-43d0-be78-0cb2718c8e92/bin/uautomizer-verify-WvqO1wxjHP/mathsat -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) [2023-11-06 23:07:36,553 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f238cba6-da83-43d0-be78-0cb2718c8e92/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2023-11-06 23:07:37,346 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2023-11-06 23:07:37,346 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-06 23:07:37,364 INFO L262 TraceCheckSpWp]: Trace formula consists of 443 conjuncts, 14 conjunts are in the unsatisfiable core [2023-11-06 23:07:37,366 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 23:07:37,569 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 23:07:37,570 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 23:07:38,324 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 23:07:38,324 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-06 23:07:38,325 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1797826180] [2023-11-06 23:07:38,325 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1797826180] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 23:07:38,325 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-06 23:07:38,325 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 26 [2023-11-06 23:07:38,325 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1282466301] [2023-11-06 23:07:38,325 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-06 23:07:38,326 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-11-06 23:07:38,326 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-06 23:07:38,327 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-11-06 23:07:38,327 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=193, Invalid=457, Unknown=0, NotChecked=0, Total=650 [2023-11-06 23:07:38,328 INFO L87 Difference]: Start difference. First operand 1007 states and 1119 transitions. Second operand has 26 states, 26 states have (on average 3.6538461538461537) internal successors, (95), 26 states have internal predecessors, (95), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-06 23:07:41,331 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 23:07:41,332 INFO L93 Difference]: Finished difference Result 1049 states and 1181 transitions. [2023-11-06 23:07:41,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2023-11-06 23:07:41,333 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 3.6538461538461537) internal successors, (95), 26 states have internal predecessors, (95), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 84 [2023-11-06 23:07:41,333 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 23:07:41,338 INFO L225 Difference]: With dead ends: 1049 [2023-11-06 23:07:41,338 INFO L226 Difference]: Without dead ends: 1043 [2023-11-06 23:07:41,339 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 189 GetRequests, 142 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 231 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=793, Invalid=1559, Unknown=0, NotChecked=0, Total=2352 [2023-11-06 23:07:41,340 INFO L413 NwaCegarLoop]: 901 mSDtfsCounter, 49 mSDsluCounter, 13412 mSDsCounter, 0 mSdLazyCounter, 784 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 14313 SdHoareTripleChecker+Invalid, 803 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 784 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-11-06 23:07:41,340 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [49 Valid, 14313 Invalid, 803 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 784 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-11-06 23:07:41,347 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1043 states. [2023-11-06 23:07:41,366 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1043 to 1025. [2023-11-06 23:07:41,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1025 states, 666 states have (on average 1.6711711711711712) internal successors, (1113), 1017 states have internal predecessors, (1113), 15 states have call successors, (15), 4 states have call predecessors, (15), 4 states have return successors, (14), 5 states have call predecessors, (14), 13 states have call successors, (14) [2023-11-06 23:07:41,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1025 states to 1025 states and 1142 transitions. [2023-11-06 23:07:41,372 INFO L78 Accepts]: Start accepts. Automaton has 1025 states and 1142 transitions. Word has length 84 [2023-11-06 23:07:41,373 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 23:07:41,373 INFO L495 AbstractCegarLoop]: Abstraction has 1025 states and 1142 transitions. [2023-11-06 23:07:41,373 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 3.6538461538461537) internal successors, (95), 26 states have internal predecessors, (95), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-06 23:07:41,373 INFO L276 IsEmpty]: Start isEmpty. Operand 1025 states and 1142 transitions. [2023-11-06 23:07:41,374 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2023-11-06 23:07:41,374 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 23:07:41,375 INFO L195 NwaCegarLoop]: trace histogram [22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 23:07:41,390 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f238cba6-da83-43d0-be78-0cb2718c8e92/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (21)] Forceful destruction successful, exit code 0 [2023-11-06 23:07:41,581 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f238cba6-da83-43d0-be78-0cb2718c8e92/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 23:07:41,582 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr80REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 532 more)] === [2023-11-06 23:07:41,582 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:07:41,582 INFO L85 PathProgramCache]: Analyzing trace with hash 1685087590, now seen corresponding path program 4 times [2023-11-06 23:07:41,582 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-06 23:07:41,582 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [633156509] [2023-11-06 23:07:41,583 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-11-06 23:07:41,583 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 [2023-11-06 23:07:41,583 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f238cba6-da83-43d0-be78-0cb2718c8e92/bin/uautomizer-verify-WvqO1wxjHP/mathsat [2023-11-06 23:07:41,584 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f238cba6-da83-43d0-be78-0cb2718c8e92/bin/uautomizer-verify-WvqO1wxjHP/mathsat -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) [2023-11-06 23:07:41,585 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f238cba6-da83-43d0-be78-0cb2718c8e92/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2023-11-06 23:07:42,021 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-11-06 23:07:42,022 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-06 23:07:42,041 INFO L262 TraceCheckSpWp]: Trace formula consists of 575 conjuncts, 25 conjunts are in the unsatisfiable core [2023-11-06 23:07:42,055 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 23:07:42,525 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 23:07:42,526 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 23:07:44,444 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 23:07:44,444 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-06 23:07:44,444 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [633156509] [2023-11-06 23:07:44,445 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [633156509] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 23:07:44,445 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-06 23:07:44,445 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26] total 50 [2023-11-06 23:07:44,445 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1985734693] [2023-11-06 23:07:44,445 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-06 23:07:44,446 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 50 states [2023-11-06 23:07:44,446 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-06 23:07:44,447 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2023-11-06 23:07:44,448 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=672, Invalid=1778, Unknown=0, NotChecked=0, Total=2450 [2023-11-06 23:07:44,449 INFO L87 Difference]: Start difference. First operand 1025 states and 1142 transitions. Second operand has 50 states, 50 states have (on average 2.38) internal successors, (119), 50 states have internal predecessors, (119), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-06 23:07:54,403 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 23:07:54,403 INFO L93 Difference]: Finished difference Result 1105 states and 1254 transitions. [2023-11-06 23:07:54,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 92 states. [2023-11-06 23:07:54,404 INFO L78 Accepts]: Start accepts. Automaton has has 50 states, 50 states have (on average 2.38) internal successors, (119), 50 states have internal predecessors, (119), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 96 [2023-11-06 23:07:54,405 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 23:07:54,410 INFO L225 Difference]: With dead ends: 1105 [2023-11-06 23:07:54,410 INFO L226 Difference]: Without dead ends: 1101 [2023-11-06 23:07:54,415 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 255 GetRequests, 142 SyntacticMatches, 0 SemanticMatches, 113 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1385 ImplicationChecksByTransitivity, 7.5s TimeCoverageRelationStatistics Valid=3791, Invalid=9319, Unknown=0, NotChecked=0, Total=13110 [2023-11-06 23:07:54,416 INFO L413 NwaCegarLoop]: 913 mSDtfsCounter, 79 mSDsluCounter, 24459 mSDsCounter, 0 mSdLazyCounter, 2497 mSolverCounterSat, 58 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 79 SdHoareTripleChecker+Valid, 25372 SdHoareTripleChecker+Invalid, 2555 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 58 IncrementalHoareTripleChecker+Valid, 2497 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.1s IncrementalHoareTripleChecker+Time [2023-11-06 23:07:54,416 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [79 Valid, 25372 Invalid, 2555 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [58 Valid, 2497 Invalid, 0 Unknown, 0 Unchecked, 4.1s Time] [2023-11-06 23:07:54,418 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1101 states. [2023-11-06 23:07:54,438 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1101 to 1059. [2023-11-06 23:07:54,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1059 states, 700 states have (on average 1.6557142857142857) internal successors, (1159), 1051 states have internal predecessors, (1159), 15 states have call successors, (15), 4 states have call predecessors, (15), 4 states have return successors, (14), 5 states have call predecessors, (14), 13 states have call successors, (14) [2023-11-06 23:07:54,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1059 states to 1059 states and 1188 transitions. [2023-11-06 23:07:54,442 INFO L78 Accepts]: Start accepts. Automaton has 1059 states and 1188 transitions. Word has length 96 [2023-11-06 23:07:54,442 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 23:07:54,443 INFO L495 AbstractCegarLoop]: Abstraction has 1059 states and 1188 transitions. [2023-11-06 23:07:54,443 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 50 states, 50 states have (on average 2.38) internal successors, (119), 50 states have internal predecessors, (119), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-06 23:07:54,443 INFO L276 IsEmpty]: Start isEmpty. Operand 1059 states and 1188 transitions. [2023-11-06 23:07:54,444 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2023-11-06 23:07:54,444 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 23:07:54,445 INFO L195 NwaCegarLoop]: trace histogram [44, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 23:07:54,461 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f238cba6-da83-43d0-be78-0cb2718c8e92/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (22)] Forceful destruction successful, exit code 0 [2023-11-06 23:07:54,657 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f238cba6-da83-43d0-be78-0cb2718c8e92/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 23:07:54,658 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr80REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 532 more)] === [2023-11-06 23:07:54,658 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:07:54,658 INFO L85 PathProgramCache]: Analyzing trace with hash -710227354, now seen corresponding path program 5 times [2023-11-06 23:07:54,658 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-06 23:07:54,659 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [861281086] [2023-11-06 23:07:54,659 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-11-06 23:07:54,659 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 [2023-11-06 23:07:54,659 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f238cba6-da83-43d0-be78-0cb2718c8e92/bin/uautomizer-verify-WvqO1wxjHP/mathsat [2023-11-06 23:07:54,660 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f238cba6-da83-43d0-be78-0cb2718c8e92/bin/uautomizer-verify-WvqO1wxjHP/mathsat -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) [2023-11-06 23:07:54,661 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f238cba6-da83-43d0-be78-0cb2718c8e92/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (23)] Waiting until timeout for monitored process [2023-11-06 23:07:56,165 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 23 check-sat command(s) [2023-11-06 23:07:56,166 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-06 23:07:56,199 INFO L262 TraceCheckSpWp]: Trace formula consists of 817 conjuncts, 57 conjunts are in the unsatisfiable core [2023-11-06 23:07:56,208 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 23:07:56,213 INFO L351 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 [2023-11-06 23:07:56,359 INFO L322 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2023-11-06 23:07:56,360 INFO L351 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 19 treesize of output 27 [2023-11-06 23:07:56,412 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2023-11-06 23:07:56,519 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 12 [2023-11-06 23:07:57,695 INFO L322 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2023-11-06 23:07:57,696 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 44 treesize of output 43 [2023-11-06 23:07:57,756 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 15 [2023-11-06 23:07:57,801 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 946 trivial. 0 not checked. [2023-11-06 23:07:57,801 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 23:08:00,385 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-06 23:08:00,386 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [861281086] [2023-11-06 23:08:00,386 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [861281086] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 23:08:00,386 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [62749276] [2023-11-06 23:08:00,386 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-11-06 23:08:00,386 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-11-06 23:08:00,386 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f238cba6-da83-43d0-be78-0cb2718c8e92/bin/uautomizer-verify-WvqO1wxjHP/cvc4 [2023-11-06 23:08:00,395 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f238cba6-da83-43d0-be78-0cb2718c8e92/bin/uautomizer-verify-WvqO1wxjHP/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-11-06 23:08:00,398 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f238cba6-da83-43d0-be78-0cb2718c8e92/bin/uautomizer-verify-WvqO1wxjHP/cvc4 --incremental --print-success --lang smt (24)] Waiting until timeout for monitored process [2023-11-06 23:09:04,314 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 23 check-sat command(s) [2023-11-06 23:09:04,314 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-06 23:09:04,552 INFO L262 TraceCheckSpWp]: Trace formula consists of 817 conjuncts, 60 conjunts are in the unsatisfiable core [2023-11-06 23:09:04,566 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 23:09:04,572 INFO L351 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 [2023-11-06 23:09:04,770 INFO L322 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2023-11-06 23:09:04,770 INFO L351 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 19 treesize of output 27 [2023-11-06 23:09:04,802 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2023-11-06 23:09:04,919 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 12 [2023-11-06 23:09:06,095 INFO L322 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2023-11-06 23:09:06,095 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 44 treesize of output 43 [2023-11-06 23:09:06,140 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 15 [2023-11-06 23:09:06,151 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 946 trivial. 0 not checked. [2023-11-06 23:09:06,152 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 23:09:08,696 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [62749276] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 23:09:08,696 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-06 23:09:08,697 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 8 [2023-11-06 23:09:08,697 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1152697955] [2023-11-06 23:09:08,697 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-06 23:09:08,698 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-06 23:09:08,698 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-06 23:09:08,698 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-06 23:09:08,699 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=99, Unknown=3, NotChecked=0, Total=132 [2023-11-06 23:09:08,699 INFO L87 Difference]: Start difference. First operand 1059 states and 1188 transitions. Second operand has 9 states, 7 states have (on average 10.571428571428571) internal successors, (74), 9 states have internal predecessors, (74), 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) [2023-11-06 23:09:16,194 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 23:09:16,195 INFO L93 Difference]: Finished difference Result 1326 states and 1533 transitions. [2023-11-06 23:09:16,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-06 23:09:16,196 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 7 states have (on average 10.571428571428571) internal successors, (74), 9 states have internal predecessors, (74), 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 118 [2023-11-06 23:09:16,196 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 23:09:16,203 INFO L225 Difference]: With dead ends: 1326 [2023-11-06 23:09:16,203 INFO L226 Difference]: Without dead ends: 1322 [2023-11-06 23:09:16,203 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 245 GetRequests, 228 SyntacticMatches, 4 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 4.5s TimeCoverageRelationStatistics Valid=49, Invalid=158, Unknown=3, NotChecked=0, Total=210 [2023-11-06 23:09:16,204 INFO L413 NwaCegarLoop]: 593 mSDtfsCounter, 584 mSDsluCounter, 2210 mSDsCounter, 0 mSdLazyCounter, 2284 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 591 SdHoareTripleChecker+Valid, 2803 SdHoareTripleChecker+Invalid, 2289 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 2284 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.3s IncrementalHoareTripleChecker+Time [2023-11-06 23:09:16,204 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [591 Valid, 2803 Invalid, 2289 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 2284 Invalid, 0 Unknown, 0 Unchecked, 7.3s Time] [2023-11-06 23:09:16,207 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1322 states. [2023-11-06 23:09:16,226 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1322 to 1058. [2023-11-06 23:09:16,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1058 states, 700 states have (on average 1.6485714285714286) internal successors, (1154), 1050 states have internal predecessors, (1154), 15 states have call successors, (15), 4 states have call predecessors, (15), 4 states have return successors, (14), 5 states have call predecessors, (14), 13 states have call successors, (14) [2023-11-06 23:09:16,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1058 states to 1058 states and 1183 transitions. [2023-11-06 23:09:16,230 INFO L78 Accepts]: Start accepts. Automaton has 1058 states and 1183 transitions. Word has length 118 [2023-11-06 23:09:16,230 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 23:09:16,231 INFO L495 AbstractCegarLoop]: Abstraction has 1058 states and 1183 transitions. [2023-11-06 23:09:16,231 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 7 states have (on average 10.571428571428571) internal successors, (74), 9 states have internal predecessors, (74), 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) [2023-11-06 23:09:16,231 INFO L276 IsEmpty]: Start isEmpty. Operand 1058 states and 1183 transitions. [2023-11-06 23:09:16,232 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2023-11-06 23:09:16,232 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 23:09:16,233 INFO L195 NwaCegarLoop]: trace histogram [44, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 23:09:16,274 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f238cba6-da83-43d0-be78-0cb2718c8e92/bin/uautomizer-verify-WvqO1wxjHP/cvc4 --incremental --print-success --lang smt (24)] Forceful destruction successful, exit code 0 [2023-11-06 23:09:16,461 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f238cba6-da83-43d0-be78-0cb2718c8e92/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (23)] Forceful destruction successful, exit code 0 [2023-11-06 23:09:16,647 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f238cba6-da83-43d0-be78-0cb2718c8e92/bin/uautomizer-verify-WvqO1wxjHP/cvc4 --incremental --print-success --lang smt,23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f238cba6-da83-43d0-be78-0cb2718c8e92/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 23:09:16,648 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr81REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 532 more)] === [2023-11-06 23:09:16,648 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:09:16,648 INFO L85 PathProgramCache]: Analyzing trace with hash -710227353, now seen corresponding path program 1 times [2023-11-06 23:09:16,649 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-06 23:09:16,649 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2027261062] [2023-11-06 23:09:16,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:09:16,649 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 [2023-11-06 23:09:16,649 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f238cba6-da83-43d0-be78-0cb2718c8e92/bin/uautomizer-verify-WvqO1wxjHP/mathsat [2023-11-06 23:09:16,650 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f238cba6-da83-43d0-be78-0cb2718c8e92/bin/uautomizer-verify-WvqO1wxjHP/mathsat -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) [2023-11-06 23:09:16,651 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f238cba6-da83-43d0-be78-0cb2718c8e92/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (25)] Waiting until timeout for monitored process [2023-11-06 23:09:17,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:09:17,575 INFO L262 TraceCheckSpWp]: Trace formula consists of 817 conjuncts, 109 conjunts are in the unsatisfiable core [2023-11-06 23:09:17,589 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 23:09:17,593 INFO L351 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 [2023-11-06 23:09:17,795 INFO L351 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 [2023-11-06 23:09:17,814 INFO L322 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2023-11-06 23:09:17,815 INFO L351 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 [2023-11-06 23:09:17,850 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 13 treesize of output 9 [2023-11-06 23:09:17,871 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2023-11-06 23:09:18,014 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 10 [2023-11-06 23:09:18,021 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 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 9 treesize of output 3 [2023-11-06 23:09:19,120 INFO L322 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2023-11-06 23:09:19,120 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 62 treesize of output 57 [2023-11-06 23:09:19,139 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 30 treesize of output 13 [2023-11-06 23:09:19,207 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 13 [2023-11-06 23:09:19,215 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 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 9 treesize of output 3 [2023-11-06 23:09:19,258 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 946 trivial. 0 not checked. [2023-11-06 23:09:19,258 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 23:09:21,099 WARN L839 $PredicateComparison]: unable to prove that (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (and (forall ((v_ArrVal_3006 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem38#1.base| v_ArrVal_3006) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (bvule (bvadd (_ bv16 32) .cse0) (bvadd (_ bv20 32) .cse0)))) (forall ((v_ArrVal_3006 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_3005 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (_ bv20 32) (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem38#1.base| v_ArrVal_3006) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem38#1.base| v_ArrVal_3005) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))) is different from false [2023-11-06 23:09:21,108 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-06 23:09:21,109 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2027261062] [2023-11-06 23:09:21,109 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2027261062] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 23:09:21,109 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1864380440] [2023-11-06 23:09:21,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:09:21,109 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-11-06 23:09:21,109 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f238cba6-da83-43d0-be78-0cb2718c8e92/bin/uautomizer-verify-WvqO1wxjHP/cvc4 [2023-11-06 23:09:21,111 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f238cba6-da83-43d0-be78-0cb2718c8e92/bin/uautomizer-verify-WvqO1wxjHP/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-11-06 23:09:21,118 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f238cba6-da83-43d0-be78-0cb2718c8e92/bin/uautomizer-verify-WvqO1wxjHP/cvc4 --incremental --print-success --lang smt (26)] Waiting until timeout for monitored process