./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/uthash-2.0.2/uthash_BER_test7-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version e7bb482b Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a46f760-6526-4a6e-8e5a-7fec075d7a49/bin/uautomizer-verify-WvqO1wxjHP/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a46f760-6526-4a6e-8e5a-7fec075d7a49/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_2a46f760-6526-4a6e-8e5a-7fec075d7a49/bin/uautomizer-verify-WvqO1wxjHP/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a46f760-6526-4a6e-8e5a-7fec075d7a49/bin/uautomizer-verify-WvqO1wxjHP/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_BER_test7-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a46f760-6526-4a6e-8e5a-7fec075d7a49/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_2a46f760-6526-4a6e-8e5a-7fec075d7a49/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 99f48cdcb9a25adc64e4307e90599f4e37a0b97f677ff29ab3d60f24a1c8e980 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-e7bb482 [2023-11-06 22:30:57,021 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-06 22:30:57,149 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a46f760-6526-4a6e-8e5a-7fec075d7a49/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2023-11-06 22:30:57,164 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-06 22:30:57,165 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-06 22:30:57,206 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-06 22:30:57,207 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-06 22:30:57,208 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-06 22:30:57,209 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-06 22:30:57,214 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-06 22:30:57,216 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-06 22:30:57,216 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-06 22:30:57,217 INFO L153 SettingsManager]: * Use SBE=true [2023-11-06 22:30:57,219 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-06 22:30:57,219 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-06 22:30:57,220 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-06 22:30:57,220 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-06 22:30:57,221 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-06 22:30:57,221 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-06 22:30:57,222 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-06 22:30:57,222 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-06 22:30:57,223 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-06 22:30:57,223 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-06 22:30:57,224 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-06 22:30:57,224 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-06 22:30:57,225 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-06 22:30:57,226 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-06 22:30:57,226 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-06 22:30:57,227 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-06 22:30:57,227 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 22:30:57,229 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-06 22:30:57,229 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-06 22:30:57,230 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-06 22:30:57,230 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-06 22:30:57,230 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-06 22:30:57,230 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-06 22:30:57,232 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-06 22:30:57,232 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-06 22:30:57,232 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_2a46f760-6526-4a6e-8e5a-7fec075d7a49/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a46f760-6526-4a6e-8e5a-7fec075d7a49/bin/uautomizer-verify-WvqO1wxjHP Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 99f48cdcb9a25adc64e4307e90599f4e37a0b97f677ff29ab3d60f24a1c8e980 [2023-11-06 22:30:57,595 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-06 22:30:57,634 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-06 22:30:57,636 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-06 22:30:57,637 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-06 22:30:57,638 INFO L274 PluginConnector]: CDTParser initialized [2023-11-06 22:30:57,640 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a46f760-6526-4a6e-8e5a-7fec075d7a49/bin/uautomizer-verify-WvqO1wxjHP/../../sv-benchmarks/c/uthash-2.0.2/uthash_BER_test7-2.i [2023-11-06 22:31:00,794 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-06 22:31:01,226 INFO L384 CDTParser]: Found 1 translation units. [2023-11-06 22:31:01,227 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a46f760-6526-4a6e-8e5a-7fec075d7a49/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test7-2.i [2023-11-06 22:31:01,257 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a46f760-6526-4a6e-8e5a-7fec075d7a49/bin/uautomizer-verify-WvqO1wxjHP/data/89d1c105d/6b866e82744c4b00864ed1d228736701/FLAG460396077 [2023-11-06 22:31:01,280 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a46f760-6526-4a6e-8e5a-7fec075d7a49/bin/uautomizer-verify-WvqO1wxjHP/data/89d1c105d/6b866e82744c4b00864ed1d228736701 [2023-11-06 22:31:01,284 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-06 22:31:01,286 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-06 22:31:01,290 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-06 22:31:01,291 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-06 22:31:01,297 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-06 22:31:01,297 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:31:01" (1/1) ... [2023-11-06 22:31:01,299 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5483a481 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:31:01, skipping insertion in model container [2023-11-06 22:31:01,299 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:31:01" (1/1) ... [2023-11-06 22:31:01,388 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-06 22:31:02,088 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 22:31:02,101 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 22:31:02,101 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@4aa15430 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:31:02, skipping insertion in model container [2023-11-06 22:31:02,102 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-06 22:31:02,102 INFO L186 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2023-11-06 22:31:02,104 INFO L158 Benchmark]: Toolchain (without parser) took 817.20ms. Allocated memory is still 146.8MB. Free memory was 96.3MB in the beginning and 76.1MB in the end (delta: 20.1MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. [2023-11-06 22:31:02,105 INFO L158 Benchmark]: CDTParser took 0.32ms. Allocated memory is still 146.8MB. Free memory is still 97.0MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-06 22:31:02,106 INFO L158 Benchmark]: CACSL2BoogieTranslator took 811.76ms. Allocated memory is still 146.8MB. Free memory was 96.3MB in the beginning and 76.1MB in the end (delta: 20.1MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. [2023-11-06 22:31:02,107 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.32ms. Allocated memory is still 146.8MB. Free memory is still 97.0MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 811.76ms. Allocated memory is still 146.8MB. Free memory was 96.3MB in the beginning and 76.1MB in the end (delta: 20.1MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 716]: Unsupported Syntax Found a cast between two array/pointer types of different sizes while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a46f760-6526-4a6e-8e5a-7fec075d7a49/bin/uautomizer-verify-WvqO1wxjHP/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a46f760-6526-4a6e-8e5a-7fec075d7a49/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_2a46f760-6526-4a6e-8e5a-7fec075d7a49/bin/uautomizer-verify-WvqO1wxjHP/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a46f760-6526-4a6e-8e5a-7fec075d7a49/bin/uautomizer-verify-WvqO1wxjHP/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_BER_test7-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a46f760-6526-4a6e-8e5a-7fec075d7a49/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_2a46f760-6526-4a6e-8e5a-7fec075d7a49/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 99f48cdcb9a25adc64e4307e90599f4e37a0b97f677ff29ab3d60f24a1c8e980 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-e7bb482 [2023-11-06 22:31:04,728 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-06 22:31:04,873 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a46f760-6526-4a6e-8e5a-7fec075d7a49/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2023-11-06 22:31:04,883 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-06 22:31:04,884 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-06 22:31:04,933 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-06 22:31:04,934 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-06 22:31:04,935 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-06 22:31:04,936 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-06 22:31:04,941 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-06 22:31:04,942 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-06 22:31:04,942 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-06 22:31:04,943 INFO L153 SettingsManager]: * Use SBE=true [2023-11-06 22:31:04,945 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-06 22:31:04,945 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-06 22:31:04,946 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-06 22:31:04,946 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-06 22:31:04,947 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-06 22:31:04,947 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-06 22:31:04,949 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-06 22:31:04,949 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-06 22:31:04,950 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-06 22:31:04,951 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-06 22:31:04,951 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-11-06 22:31:04,952 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-11-06 22:31:04,952 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-06 22:31:04,953 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-06 22:31:04,953 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-06 22:31:04,954 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-06 22:31:04,955 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-06 22:31:04,956 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-06 22:31:04,956 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 22:31:04,957 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-06 22:31:04,957 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-06 22:31:04,958 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-11-06 22:31:04,958 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-11-06 22:31:04,958 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-06 22:31:04,958 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-06 22:31:04,959 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-06 22:31:04,960 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-11-06 22:31:04,960 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-06 22:31:04,961 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_2a46f760-6526-4a6e-8e5a-7fec075d7a49/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a46f760-6526-4a6e-8e5a-7fec075d7a49/bin/uautomizer-verify-WvqO1wxjHP Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 99f48cdcb9a25adc64e4307e90599f4e37a0b97f677ff29ab3d60f24a1c8e980 [2023-11-06 22:31:05,404 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-06 22:31:05,431 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-06 22:31:05,434 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-06 22:31:05,436 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-06 22:31:05,436 INFO L274 PluginConnector]: CDTParser initialized [2023-11-06 22:31:05,438 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a46f760-6526-4a6e-8e5a-7fec075d7a49/bin/uautomizer-verify-WvqO1wxjHP/../../sv-benchmarks/c/uthash-2.0.2/uthash_BER_test7-2.i [2023-11-06 22:31:08,826 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-06 22:31:09,265 INFO L384 CDTParser]: Found 1 translation units. [2023-11-06 22:31:09,266 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a46f760-6526-4a6e-8e5a-7fec075d7a49/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test7-2.i [2023-11-06 22:31:09,291 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a46f760-6526-4a6e-8e5a-7fec075d7a49/bin/uautomizer-verify-WvqO1wxjHP/data/eceecbd36/a2b063aed7f145158e05b993275e42c7/FLAGccaedf4d4 [2023-11-06 22:31:09,322 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a46f760-6526-4a6e-8e5a-7fec075d7a49/bin/uautomizer-verify-WvqO1wxjHP/data/eceecbd36/a2b063aed7f145158e05b993275e42c7 [2023-11-06 22:31:09,329 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-06 22:31:09,331 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-06 22:31:09,335 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-06 22:31:09,335 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-06 22:31:09,341 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-06 22:31:09,343 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:31:09" (1/1) ... [2023-11-06 22:31:09,344 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@175ac14a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:31:09, skipping insertion in model container [2023-11-06 22:31:09,345 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:31:09" (1/1) ... [2023-11-06 22:31:09,452 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-06 22:31:10,261 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 22:31:10,283 INFO L199 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2023-11-06 22:31:10,326 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-06 22:31:10,445 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 22:31:10,450 INFO L202 MainTranslator]: Completed pre-run [2023-11-06 22:31:10,522 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 22:31:10,566 WARN L672 CHandler]: The function memcmp is called, but not defined or handled by StandardFunctionHandler. [2023-11-06 22:31:10,574 INFO L206 MainTranslator]: Completed translation [2023-11-06 22:31:10,575 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:31:10 WrapperNode [2023-11-06 22:31:10,575 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-06 22:31:10,576 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-06 22:31:10,577 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-06 22:31:10,577 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-06 22:31:10,585 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:31:10" (1/1) ... [2023-11-06 22:31:10,622 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:31:10" (1/1) ... [2023-11-06 22:31:10,679 INFO L138 Inliner]: procedures = 179, calls = 331, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 1184 [2023-11-06 22:31:10,680 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-06 22:31:10,681 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-06 22:31:10,681 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-06 22:31:10,681 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-06 22:31:10,691 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:31:10" (1/1) ... [2023-11-06 22:31:10,691 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:31:10" (1/1) ... [2023-11-06 22:31:10,705 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:31:10" (1/1) ... [2023-11-06 22:31:10,705 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:31:10" (1/1) ... [2023-11-06 22:31:10,769 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:31:10" (1/1) ... [2023-11-06 22:31:10,786 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:31:10" (1/1) ... [2023-11-06 22:31:10,808 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:31:10" (1/1) ... [2023-11-06 22:31:10,814 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:31:10" (1/1) ... [2023-11-06 22:31:10,832 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-06 22:31:10,834 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-06 22:31:10,835 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-06 22:31:10,835 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-06 22:31:10,836 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:31:10" (1/1) ... [2023-11-06 22:31:10,843 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 22:31:10,857 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a46f760-6526-4a6e-8e5a-7fec075d7a49/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:31:10,874 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a46f760-6526-4a6e-8e5a-7fec075d7a49/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-06 22:31:10,879 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a46f760-6526-4a6e-8e5a-7fec075d7a49/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-06 22:31:10,908 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-11-06 22:31:10,909 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-11-06 22:31:10,909 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2023-11-06 22:31:10,909 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2023-11-06 22:31:10,909 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2023-11-06 22:31:10,909 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2023-11-06 22:31:10,910 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-06 22:31:10,910 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-06 22:31:10,911 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-06 22:31:10,911 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-06 22:31:10,913 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2023-11-06 22:31:10,913 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-06 22:31:10,914 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-06 22:31:10,914 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2023-11-06 22:31:10,914 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2023-11-06 22:31:10,914 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-06 22:31:10,915 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-06 22:31:11,227 INFO L236 CfgBuilder]: Building ICFG [2023-11-06 22:31:11,232 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-06 22:31:11,270 WARN L818 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2023-11-06 22:31:17,138 INFO L277 CfgBuilder]: Performing block encoding [2023-11-06 22:31:17,158 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-06 22:31:17,159 INFO L302 CfgBuilder]: Removed 72 assume(true) statements. [2023-11-06 22:31:17,163 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:31:17 BoogieIcfgContainer [2023-11-06 22:31:17,164 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-06 22:31:17,166 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-06 22:31:17,168 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-06 22:31:17,171 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-06 22:31:17,171 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 10:31:09" (1/3) ... [2023-11-06 22:31:17,172 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1b771d1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:31:17, skipping insertion in model container [2023-11-06 22:31:17,173 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:31:10" (2/3) ... [2023-11-06 22:31:17,175 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1b771d1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:31:17, skipping insertion in model container [2023-11-06 22:31:17,176 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:31:17" (3/3) ... [2023-11-06 22:31:17,178 INFO L112 eAbstractionObserver]: Analyzing ICFG uthash_BER_test7-2.i [2023-11-06 22:31:17,198 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-06 22:31:17,198 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 634 error locations. [2023-11-06 22:31:17,304 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-06 22:31:17,310 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;@74ec7b46, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-06 22:31:17,310 INFO L358 AbstractCegarLoop]: Starting to check reachability of 634 error locations. [2023-11-06 22:31:17,322 INFO L276 IsEmpty]: Start isEmpty. Operand has 1262 states, 623 states have (on average 2.2423756019261636) internal successors, (1397), 1255 states have internal predecessors, (1397), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2023-11-06 22:31:17,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2023-11-06 22:31:17,329 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:31:17,330 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2023-11-06 22:31:17,330 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 631 more)] === [2023-11-06 22:31:17,339 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:31:17,339 INFO L85 PathProgramCache]: Analyzing trace with hash 47731, now seen corresponding path program 1 times [2023-11-06 22:31:17,351 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-06 22:31:17,352 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1291203126] [2023-11-06 22:31:17,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:31:17,352 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 22:31:17,352 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a46f760-6526-4a6e-8e5a-7fec075d7a49/bin/uautomizer-verify-WvqO1wxjHP/mathsat [2023-11-06 22:31:17,354 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a46f760-6526-4a6e-8e5a-7fec075d7a49/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 22:31:17,364 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a46f760-6526-4a6e-8e5a-7fec075d7a49/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 22:31:17,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:31:17,532 INFO L262 TraceCheckSpWp]: Trace formula consists of 23 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-06 22:31:17,538 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:31:17,604 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 22:31:17,616 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 22:31:17,616 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:31:17,617 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-06 22:31:17,617 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1291203126] [2023-11-06 22:31:17,618 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1291203126] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:31:17,618 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:31:17,618 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 22:31:17,620 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2135222099] [2023-11-06 22:31:17,621 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:31:17,625 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:31:17,625 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-06 22:31:17,653 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:31:17,654 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:31:17,658 INFO L87 Difference]: Start difference. First operand has 1262 states, 623 states have (on average 2.2423756019261636) internal successors, (1397), 1255 states have internal predecessors, (1397), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) 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 22:31:20,312 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:31:20,312 INFO L93 Difference]: Finished difference Result 1434 states and 1509 transitions. [2023-11-06 22:31:20,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:31:20,314 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 22:31:20,315 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:31:20,337 INFO L225 Difference]: With dead ends: 1434 [2023-11-06 22:31:20,337 INFO L226 Difference]: Without dead ends: 1432 [2023-11-06 22:31:20,339 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 22:31:20,347 INFO L413 NwaCegarLoop]: 752 mSDtfsCounter, 1167 mSDsluCounter, 162 mSDsCounter, 0 mSdLazyCounter, 735 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1170 SdHoareTripleChecker+Valid, 914 SdHoareTripleChecker+Invalid, 751 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 735 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2023-11-06 22:31:20,350 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1170 Valid, 914 Invalid, 751 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 735 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2023-11-06 22:31:20,373 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1432 states. [2023-11-06 22:31:20,452 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1432 to 1244. [2023-11-06 22:31:20,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1244 states, 623 states have (on average 2.091492776886035) internal successors, (1303), 1238 states have internal predecessors, (1303), 5 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-06 22:31:20,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1244 states to 1244 states and 1311 transitions. [2023-11-06 22:31:20,463 INFO L78 Accepts]: Start accepts. Automaton has 1244 states and 1311 transitions. Word has length 3 [2023-11-06 22:31:20,463 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:31:20,463 INFO L495 AbstractCegarLoop]: Abstraction has 1244 states and 1311 transitions. [2023-11-06 22:31:20,464 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 22:31:20,464 INFO L276 IsEmpty]: Start isEmpty. Operand 1244 states and 1311 transitions. [2023-11-06 22:31:20,464 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2023-11-06 22:31:20,464 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:31:20,465 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2023-11-06 22:31:20,476 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a46f760-6526-4a6e-8e5a-7fec075d7a49/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)] Ended with exit code 0 [2023-11-06 22:31:20,675 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a46f760-6526-4a6e-8e5a-7fec075d7a49/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 22:31:20,675 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 631 more)] === [2023-11-06 22:31:20,676 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:31:20,676 INFO L85 PathProgramCache]: Analyzing trace with hash 47732, now seen corresponding path program 1 times [2023-11-06 22:31:20,676 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-06 22:31:20,677 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [69253326] [2023-11-06 22:31:20,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:31:20,677 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 22:31:20,677 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a46f760-6526-4a6e-8e5a-7fec075d7a49/bin/uautomizer-verify-WvqO1wxjHP/mathsat [2023-11-06 22:31:20,678 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a46f760-6526-4a6e-8e5a-7fec075d7a49/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 22:31:20,688 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a46f760-6526-4a6e-8e5a-7fec075d7a49/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 22:31:20,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:31:20,815 INFO L262 TraceCheckSpWp]: Trace formula consists of 23 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-06 22:31:20,819 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:31:20,833 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 22:31:20,846 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 22:31:20,846 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:31:20,846 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-06 22:31:20,851 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [69253326] [2023-11-06 22:31:20,851 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [69253326] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:31:20,852 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:31:20,853 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 22:31:20,853 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [245659214] [2023-11-06 22:31:20,853 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:31:20,854 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:31:20,855 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-06 22:31:20,855 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:31:20,855 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:31:20,856 INFO L87 Difference]: Start difference. First operand 1244 states and 1311 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 22:31:25,417 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:31:25,417 INFO L93 Difference]: Finished difference Result 1838 states and 1947 transitions. [2023-11-06 22:31:25,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:31:25,418 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 22:31:25,418 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:31:25,429 INFO L225 Difference]: With dead ends: 1838 [2023-11-06 22:31:25,429 INFO L226 Difference]: Without dead ends: 1838 [2023-11-06 22:31:25,429 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 22:31:25,431 INFO L413 NwaCegarLoop]: 1023 mSDtfsCounter, 634 mSDsluCounter, 687 mSDsCounter, 0 mSdLazyCounter, 890 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 634 SdHoareTripleChecker+Valid, 1710 SdHoareTripleChecker+Invalid, 895 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 890 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.5s IncrementalHoareTripleChecker+Time [2023-11-06 22:31:25,431 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [634 Valid, 1710 Invalid, 895 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 890 Invalid, 0 Unknown, 0 Unchecked, 4.5s Time] [2023-11-06 22:31:25,436 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1838 states. [2023-11-06 22:31:25,468 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1838 to 1450. [2023-11-06 22:31:25,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1450 states, 830 states have (on average 2.0734939759036144) internal successors, (1721), 1444 states have internal predecessors, (1721), 5 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-06 22:31:25,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1450 states to 1450 states and 1729 transitions. [2023-11-06 22:31:25,479 INFO L78 Accepts]: Start accepts. Automaton has 1450 states and 1729 transitions. Word has length 3 [2023-11-06 22:31:25,479 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:31:25,480 INFO L495 AbstractCegarLoop]: Abstraction has 1450 states and 1729 transitions. [2023-11-06 22:31:25,480 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 22:31:25,480 INFO L276 IsEmpty]: Start isEmpty. Operand 1450 states and 1729 transitions. [2023-11-06 22:31:25,480 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2023-11-06 22:31:25,481 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:31:25,481 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:31:25,498 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a46f760-6526-4a6e-8e5a-7fec075d7a49/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 22:31:25,697 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a46f760-6526-4a6e-8e5a-7fec075d7a49/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 22:31:25,697 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 631 more)] === [2023-11-06 22:31:25,698 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:31:25,698 INFO L85 PathProgramCache]: Analyzing trace with hash 1130822653, now seen corresponding path program 1 times [2023-11-06 22:31:25,699 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-06 22:31:25,699 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [129831366] [2023-11-06 22:31:25,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:31:25,699 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 22:31:25,699 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a46f760-6526-4a6e-8e5a-7fec075d7a49/bin/uautomizer-verify-WvqO1wxjHP/mathsat [2023-11-06 22:31:25,701 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a46f760-6526-4a6e-8e5a-7fec075d7a49/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 22:31:25,732 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a46f760-6526-4a6e-8e5a-7fec075d7a49/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 22:31:25,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:31:25,911 INFO L262 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-06 22:31:25,914 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:31:25,933 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 22:31:25,971 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 22:31:26,066 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:31:26,069 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 22:31:26,092 INFO L322 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2023-11-06 22:31:26,093 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 22:31:26,119 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 22:31:26,119 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:31:26,120 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-06 22:31:26,120 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [129831366] [2023-11-06 22:31:26,122 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [129831366] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:31:26,122 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:31:26,123 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 22:31:26,123 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [225639164] [2023-11-06 22:31:26,123 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:31:26,124 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 22:31:26,124 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-06 22:31:26,124 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 22:31:26,125 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-06 22:31:26,125 INFO L87 Difference]: Start difference. First operand 1450 states and 1729 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 22:31:30,265 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:31:30,265 INFO L93 Difference]: Finished difference Result 1632 states and 1922 transitions. [2023-11-06 22:31:30,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-06 22:31:30,266 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 22:31:30,266 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:31:30,275 INFO L225 Difference]: With dead ends: 1632 [2023-11-06 22:31:30,275 INFO L226 Difference]: Without dead ends: 1632 [2023-11-06 22:31:30,276 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 22:31:30,277 INFO L413 NwaCegarLoop]: 431 mSDtfsCounter, 1464 mSDsluCounter, 99 mSDsCounter, 0 mSdLazyCounter, 1117 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1467 SdHoareTripleChecker+Valid, 530 SdHoareTripleChecker+Invalid, 1134 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 1117 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.1s IncrementalHoareTripleChecker+Time [2023-11-06 22:31:30,277 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1467 Valid, 530 Invalid, 1134 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 1117 Invalid, 0 Unknown, 0 Unchecked, 4.1s Time] [2023-11-06 22:31:30,281 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1632 states. [2023-11-06 22:31:30,304 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1632 to 1233. [2023-11-06 22:31:30,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1233 states, 623 states have (on average 2.07223113964687) internal successors, (1291), 1227 states have internal predecessors, (1291), 5 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-06 22:31:30,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1233 states to 1233 states and 1299 transitions. [2023-11-06 22:31:30,312 INFO L78 Accepts]: Start accepts. Automaton has 1233 states and 1299 transitions. Word has length 7 [2023-11-06 22:31:30,312 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:31:30,312 INFO L495 AbstractCegarLoop]: Abstraction has 1233 states and 1299 transitions. [2023-11-06 22:31:30,313 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 22:31:30,313 INFO L276 IsEmpty]: Start isEmpty. Operand 1233 states and 1299 transitions. [2023-11-06 22:31:30,313 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2023-11-06 22:31:30,313 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:31:30,314 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:31:30,326 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a46f760-6526-4a6e-8e5a-7fec075d7a49/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)] Forceful destruction successful, exit code 0 [2023-11-06 22:31:30,525 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a46f760-6526-4a6e-8e5a-7fec075d7a49/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 22:31:30,526 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 631 more)] === [2023-11-06 22:31:30,527 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:31:30,527 INFO L85 PathProgramCache]: Analyzing trace with hash 695763858, now seen corresponding path program 1 times [2023-11-06 22:31:30,528 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-06 22:31:30,530 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [516919805] [2023-11-06 22:31:30,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:31:30,530 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 22:31:30,531 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a46f760-6526-4a6e-8e5a-7fec075d7a49/bin/uautomizer-verify-WvqO1wxjHP/mathsat [2023-11-06 22:31:30,532 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a46f760-6526-4a6e-8e5a-7fec075d7a49/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 22:31:30,572 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a46f760-6526-4a6e-8e5a-7fec075d7a49/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 22:31:30,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:31:30,694 INFO L262 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-06 22:31:30,697 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:31:30,702 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 22:31:30,715 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 22:31:30,716 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:31:30,716 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-06 22:31:30,716 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [516919805] [2023-11-06 22:31:30,716 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [516919805] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:31:30,716 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:31:30,717 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 22:31:30,717 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1357731774] [2023-11-06 22:31:30,717 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:31:30,717 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:31:30,718 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-06 22:31:30,718 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:31:30,719 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:31:30,719 INFO L87 Difference]: Start difference. First operand 1233 states and 1299 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 22:31:33,345 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:31:33,345 INFO L93 Difference]: Finished difference Result 1566 states and 1662 transitions. [2023-11-06 22:31:33,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:31:33,347 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 22:31:33,347 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:31:33,354 INFO L225 Difference]: With dead ends: 1566 [2023-11-06 22:31:33,354 INFO L226 Difference]: Without dead ends: 1566 [2023-11-06 22:31:33,355 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 22:31:33,356 INFO L413 NwaCegarLoop]: 1149 mSDtfsCounter, 979 mSDsluCounter, 355 mSDsCounter, 0 mSdLazyCounter, 818 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 982 SdHoareTripleChecker+Valid, 1504 SdHoareTripleChecker+Invalid, 869 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 818 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2023-11-06 22:31:33,356 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [982 Valid, 1504 Invalid, 869 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 818 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2023-11-06 22:31:33,360 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1566 states. [2023-11-06 22:31:33,380 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1566 to 1186. [2023-11-06 22:31:33,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1186 states, 623 states have (on average 1.9967897271268058) internal successors, (1244), 1180 states have internal predecessors, (1244), 5 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-06 22:31:33,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1186 states to 1186 states and 1252 transitions. [2023-11-06 22:31:33,387 INFO L78 Accepts]: Start accepts. Automaton has 1186 states and 1252 transitions. Word has length 8 [2023-11-06 22:31:33,388 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:31:33,388 INFO L495 AbstractCegarLoop]: Abstraction has 1186 states and 1252 transitions. [2023-11-06 22:31:33,388 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 22:31:33,388 INFO L276 IsEmpty]: Start isEmpty. Operand 1186 states and 1252 transitions. [2023-11-06 22:31:33,389 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2023-11-06 22:31:33,389 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:31:33,389 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:31:33,406 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a46f760-6526-4a6e-8e5a-7fec075d7a49/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 22:31:33,600 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a46f760-6526-4a6e-8e5a-7fec075d7a49/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 22:31:33,601 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 631 more)] === [2023-11-06 22:31:33,601 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:31:33,601 INFO L85 PathProgramCache]: Analyzing trace with hash 695763859, now seen corresponding path program 1 times [2023-11-06 22:31:33,602 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-06 22:31:33,602 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1329853174] [2023-11-06 22:31:33,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:31:33,602 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 22:31:33,602 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a46f760-6526-4a6e-8e5a-7fec075d7a49/bin/uautomizer-verify-WvqO1wxjHP/mathsat [2023-11-06 22:31:33,603 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a46f760-6526-4a6e-8e5a-7fec075d7a49/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 22:31:33,605 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a46f760-6526-4a6e-8e5a-7fec075d7a49/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 22:31:33,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:31:33,750 INFO L262 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-06 22:31:33,753 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:31:33,767 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 22:31:33,799 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 22:31:33,800 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:31:33,800 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-06 22:31:33,800 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1329853174] [2023-11-06 22:31:33,800 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1329853174] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:31:33,800 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:31:33,801 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 22:31:33,804 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1774464784] [2023-11-06 22:31:33,804 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:31:33,805 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:31:33,806 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-06 22:31:33,807 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:31:33,807 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:31:33,809 INFO L87 Difference]: Start difference. First operand 1186 states and 1252 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 22:31:37,509 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:31:37,510 INFO L93 Difference]: Finished difference Result 1648 states and 1747 transitions. [2023-11-06 22:31:37,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:31:37,511 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 22:31:37,511 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:31:37,520 INFO L225 Difference]: With dead ends: 1648 [2023-11-06 22:31:37,520 INFO L226 Difference]: Without dead ends: 1648 [2023-11-06 22:31:37,520 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 22:31:37,521 INFO L413 NwaCegarLoop]: 1355 mSDtfsCounter, 682 mSDsluCounter, 526 mSDsCounter, 0 mSdLazyCounter, 826 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 682 SdHoareTripleChecker+Valid, 1881 SdHoareTripleChecker+Invalid, 838 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 826 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2023-11-06 22:31:37,522 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [682 Valid, 1881 Invalid, 838 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 826 Invalid, 0 Unknown, 0 Unchecked, 3.7s Time] [2023-11-06 22:31:37,526 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1648 states. [2023-11-06 22:31:37,545 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1648 to 1208. [2023-11-06 22:31:37,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1208 states, 655 states have (on average 1.984732824427481) internal successors, (1300), 1202 states have internal predecessors, (1300), 5 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-06 22:31:37,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1208 states to 1208 states and 1308 transitions. [2023-11-06 22:31:37,553 INFO L78 Accepts]: Start accepts. Automaton has 1208 states and 1308 transitions. Word has length 8 [2023-11-06 22:31:37,553 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:31:37,553 INFO L495 AbstractCegarLoop]: Abstraction has 1208 states and 1308 transitions. [2023-11-06 22:31:37,553 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 22:31:37,554 INFO L276 IsEmpty]: Start isEmpty. Operand 1208 states and 1308 transitions. [2023-11-06 22:31:37,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2023-11-06 22:31:37,554 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:31:37,554 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:31:37,566 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a46f760-6526-4a6e-8e5a-7fec075d7a49/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 22:31:37,765 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a46f760-6526-4a6e-8e5a-7fec075d7a49/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 22:31:37,766 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 631 more)] === [2023-11-06 22:31:37,766 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:31:37,766 INFO L85 PathProgramCache]: Analyzing trace with hash 2045817064, now seen corresponding path program 1 times [2023-11-06 22:31:37,767 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-06 22:31:37,767 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [998956185] [2023-11-06 22:31:37,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:31:37,767 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 22:31:37,768 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a46f760-6526-4a6e-8e5a-7fec075d7a49/bin/uautomizer-verify-WvqO1wxjHP/mathsat [2023-11-06 22:31:37,768 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a46f760-6526-4a6e-8e5a-7fec075d7a49/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 22:31:37,770 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a46f760-6526-4a6e-8e5a-7fec075d7a49/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 22:31:37,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:31:37,929 INFO L262 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-06 22:31:37,932 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:31:38,030 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 22:31:38,031 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:31:38,031 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-06 22:31:38,031 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [998956185] [2023-11-06 22:31:38,031 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [998956185] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:31:38,032 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:31:38,032 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-06 22:31:38,032 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [362799989] [2023-11-06 22:31:38,032 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:31:38,033 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 22:31:38,033 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-06 22:31:38,033 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 22:31:38,034 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-06 22:31:38,034 INFO L87 Difference]: Start difference. First operand 1208 states and 1308 transitions. Second operand has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:31:39,015 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:31:39,015 INFO L93 Difference]: Finished difference Result 1861 states and 2005 transitions. [2023-11-06 22:31:39,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-06 22:31:39,016 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2023-11-06 22:31:39,016 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:31:39,026 INFO L225 Difference]: With dead ends: 1861 [2023-11-06 22:31:39,026 INFO L226 Difference]: Without dead ends: 1861 [2023-11-06 22:31:39,026 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 10 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 22:31:39,027 INFO L413 NwaCegarLoop]: 1371 mSDtfsCounter, 761 mSDsluCounter, 2311 mSDsCounter, 0 mSdLazyCounter, 349 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 763 SdHoareTripleChecker+Valid, 3682 SdHoareTripleChecker+Invalid, 364 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 349 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-11-06 22:31:39,028 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [763 Valid, 3682 Invalid, 364 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 349 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-11-06 22:31:39,032 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1861 states. [2023-11-06 22:31:39,056 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1861 to 1458. [2023-11-06 22:31:39,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1458 states, 905 states have (on average 1.9502762430939227) internal successors, (1765), 1452 states have internal predecessors, (1765), 5 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-06 22:31:39,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1458 states to 1458 states and 1773 transitions. [2023-11-06 22:31:39,066 INFO L78 Accepts]: Start accepts. Automaton has 1458 states and 1773 transitions. Word has length 13 [2023-11-06 22:31:39,066 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:31:39,066 INFO L495 AbstractCegarLoop]: Abstraction has 1458 states and 1773 transitions. [2023-11-06 22:31:39,067 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:31:39,067 INFO L276 IsEmpty]: Start isEmpty. Operand 1458 states and 1773 transitions. [2023-11-06 22:31:39,067 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2023-11-06 22:31:39,068 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:31:39,068 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:31:39,084 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a46f760-6526-4a6e-8e5a-7fec075d7a49/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 22:31:39,277 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a46f760-6526-4a6e-8e5a-7fec075d7a49/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 22:31:39,277 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr340REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 631 more)] === [2023-11-06 22:31:39,277 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:31:39,278 INFO L85 PathProgramCache]: Analyzing trace with hash 1459496966, now seen corresponding path program 1 times [2023-11-06 22:31:39,278 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-06 22:31:39,278 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [354323807] [2023-11-06 22:31:39,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:31:39,278 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 22:31:39,278 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a46f760-6526-4a6e-8e5a-7fec075d7a49/bin/uautomizer-verify-WvqO1wxjHP/mathsat [2023-11-06 22:31:39,281 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a46f760-6526-4a6e-8e5a-7fec075d7a49/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 22:31:39,320 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a46f760-6526-4a6e-8e5a-7fec075d7a49/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 22:31:39,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:31:39,450 INFO L262 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-06 22:31:39,453 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:31:39,467 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 22:31:39,467 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:31:39,467 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-06 22:31:39,467 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [354323807] [2023-11-06 22:31:39,467 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [354323807] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:31:39,468 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:31:39,468 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 22:31:39,468 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1397575034] [2023-11-06 22:31:39,468 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:31:39,468 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:31:39,468 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-06 22:31:39,469 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:31:39,469 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:31:39,469 INFO L87 Difference]: Start difference. First operand 1458 states and 1773 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 22:31:39,501 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:31:39,501 INFO L93 Difference]: Finished difference Result 1398 states and 1687 transitions. [2023-11-06 22:31:39,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:31:39,502 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 22:31:39,502 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:31:39,507 INFO L225 Difference]: With dead ends: 1398 [2023-11-06 22:31:39,508 INFO L226 Difference]: Without dead ends: 1398 [2023-11-06 22:31:39,508 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 22:31:39,509 INFO L413 NwaCegarLoop]: 1179 mSDtfsCounter, 81 mSDsluCounter, 1107 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 81 SdHoareTripleChecker+Valid, 2286 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 22:31:39,509 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [81 Valid, 2286 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-06 22:31:39,513 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1398 states. [2023-11-06 22:31:39,532 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1398 to 1398. [2023-11-06 22:31:39,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1398 states, 869 states have (on average 1.9321058688147297) internal successors, (1679), 1392 states have internal predecessors, (1679), 5 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-06 22:31:39,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1398 states to 1398 states and 1687 transitions. [2023-11-06 22:31:39,541 INFO L78 Accepts]: Start accepts. Automaton has 1398 states and 1687 transitions. Word has length 13 [2023-11-06 22:31:39,541 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:31:39,541 INFO L495 AbstractCegarLoop]: Abstraction has 1398 states and 1687 transitions. [2023-11-06 22:31:39,541 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 22:31:39,542 INFO L276 IsEmpty]: Start isEmpty. Operand 1398 states and 1687 transitions. [2023-11-06 22:31:39,542 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2023-11-06 22:31:39,542 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:31:39,543 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:31:39,559 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a46f760-6526-4a6e-8e5a-7fec075d7a49/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 22:31:39,755 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a46f760-6526-4a6e-8e5a-7fec075d7a49/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 22:31:39,755 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr365REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 631 more)] === [2023-11-06 22:31:39,756 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:31:39,756 INFO L85 PathProgramCache]: Analyzing trace with hash -1877695967, now seen corresponding path program 1 times [2023-11-06 22:31:39,756 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-06 22:31:39,756 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1618149334] [2023-11-06 22:31:39,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:31:39,756 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 22:31:39,757 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a46f760-6526-4a6e-8e5a-7fec075d7a49/bin/uautomizer-verify-WvqO1wxjHP/mathsat [2023-11-06 22:31:39,758 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a46f760-6526-4a6e-8e5a-7fec075d7a49/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 22:31:39,760 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a46f760-6526-4a6e-8e5a-7fec075d7a49/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 22:31:39,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:31:39,916 INFO L262 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-06 22:31:39,919 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:31:39,937 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 22:31:39,937 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:31:39,937 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-06 22:31:39,938 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1618149334] [2023-11-06 22:31:39,938 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1618149334] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:31:39,938 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:31:39,938 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-06 22:31:39,938 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1751465121] [2023-11-06 22:31:39,938 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:31:39,939 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 22:31:39,939 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-06 22:31:39,939 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 22:31:39,940 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-06 22:31:39,940 INFO L87 Difference]: Start difference. First operand 1398 states and 1687 transitions. Second operand has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 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 22:31:40,025 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:31:40,025 INFO L93 Difference]: Finished difference Result 1370 states and 1631 transitions. [2023-11-06 22:31:40,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-06 22:31:40,026 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 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 15 [2023-11-06 22:31:40,026 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:31:40,031 INFO L225 Difference]: With dead ends: 1370 [2023-11-06 22:31:40,031 INFO L226 Difference]: Without dead ends: 1370 [2023-11-06 22:31:40,032 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 12 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 22:31:40,032 INFO L413 NwaCegarLoop]: 1134 mSDtfsCounter, 62 mSDsluCounter, 2234 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 3368 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 22:31:40,032 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [62 Valid, 3368 Invalid, 57 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-06 22:31:40,035 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1370 states. [2023-11-06 22:31:40,053 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1370 to 1368. [2023-11-06 22:31:40,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1368 states, 853 states have (on average 1.9003516998827668) internal successors, (1621), 1362 states have internal predecessors, (1621), 5 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-06 22:31:40,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1368 states to 1368 states and 1629 transitions. [2023-11-06 22:31:40,061 INFO L78 Accepts]: Start accepts. Automaton has 1368 states and 1629 transitions. Word has length 15 [2023-11-06 22:31:40,061 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:31:40,061 INFO L495 AbstractCegarLoop]: Abstraction has 1368 states and 1629 transitions. [2023-11-06 22:31:40,061 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 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 22:31:40,061 INFO L276 IsEmpty]: Start isEmpty. Operand 1368 states and 1629 transitions. [2023-11-06 22:31:40,062 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2023-11-06 22:31:40,062 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:31:40,062 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:31:40,081 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a46f760-6526-4a6e-8e5a-7fec075d7a49/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 22:31:40,274 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a46f760-6526-4a6e-8e5a-7fec075d7a49/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 22:31:40,274 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr632ASSERT_VIOLATIONMEMORY_LEAK === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 631 more)] === [2023-11-06 22:31:40,274 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:31:40,274 INFO L85 PathProgramCache]: Analyzing trace with hash 816098230, now seen corresponding path program 1 times [2023-11-06 22:31:40,275 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-06 22:31:40,275 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2081441680] [2023-11-06 22:31:40,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:31:40,275 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 22:31:40,275 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a46f760-6526-4a6e-8e5a-7fec075d7a49/bin/uautomizer-verify-WvqO1wxjHP/mathsat [2023-11-06 22:31:40,277 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a46f760-6526-4a6e-8e5a-7fec075d7a49/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 22:31:40,313 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a46f760-6526-4a6e-8e5a-7fec075d7a49/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 22:31:40,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:31:40,498 INFO L262 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-06 22:31:40,501 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:31:40,510 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-06 22:31:40,510 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-06 22:31:40,511 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-06 22:31:40,521 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 22:31:40,585 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-06 22:31:40,586 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 22:31:40,602 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 22:31:40,602 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:31:40,603 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-06 22:31:40,603 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2081441680] [2023-11-06 22:31:40,603 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2081441680] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:31:40,603 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:31:40,603 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-06 22:31:40,603 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [734749847] [2023-11-06 22:31:40,604 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:31:40,604 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 22:31:40,604 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-06 22:31:40,605 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 22:31:40,605 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-06 22:31:40,605 INFO L87 Difference]: Start difference. First operand 1368 states and 1629 transitions. Second operand has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 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 22:31:42,279 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:31:42,279 INFO L93 Difference]: Finished difference Result 1808 states and 2130 transitions. [2023-11-06 22:31:42,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-06 22:31:42,280 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 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 16 [2023-11-06 22:31:42,280 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:31:42,287 INFO L225 Difference]: With dead ends: 1808 [2023-11-06 22:31:42,287 INFO L226 Difference]: Without dead ends: 1808 [2023-11-06 22:31:42,287 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 13 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 22:31:42,288 INFO L413 NwaCegarLoop]: 1117 mSDtfsCounter, 428 mSDsluCounter, 2120 mSDsCounter, 0 mSdLazyCounter, 229 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 428 SdHoareTripleChecker+Valid, 3237 SdHoareTripleChecker+Invalid, 230 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 229 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2023-11-06 22:31:42,288 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [428 Valid, 3237 Invalid, 230 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 229 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2023-11-06 22:31:42,291 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1808 states. [2023-11-06 22:31:42,315 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1808 to 1367. [2023-11-06 22:31:42,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1367 states, 852 states have (on average 1.9002347417840375) internal successors, (1619), 1361 states have internal predecessors, (1619), 5 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-06 22:31:42,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1367 states to 1367 states and 1627 transitions. [2023-11-06 22:31:42,340 INFO L78 Accepts]: Start accepts. Automaton has 1367 states and 1627 transitions. Word has length 16 [2023-11-06 22:31:42,340 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:31:42,340 INFO L495 AbstractCegarLoop]: Abstraction has 1367 states and 1627 transitions. [2023-11-06 22:31:42,340 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 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 22:31:42,341 INFO L276 IsEmpty]: Start isEmpty. Operand 1367 states and 1627 transitions. [2023-11-06 22:31:42,341 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2023-11-06 22:31:42,341 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:31:42,341 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 22:31:42,358 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a46f760-6526-4a6e-8e5a-7fec075d7a49/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 22:31:42,553 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a46f760-6526-4a6e-8e5a-7fec075d7a49/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 22:31:42,553 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr15REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 631 more)] === [2023-11-06 22:31:42,554 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:31:42,554 INFO L85 PathProgramCache]: Analyzing trace with hash -168464001, now seen corresponding path program 1 times [2023-11-06 22:31:42,555 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-06 22:31:42,555 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [209119433] [2023-11-06 22:31:42,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:31:42,555 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 22:31:42,555 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a46f760-6526-4a6e-8e5a-7fec075d7a49/bin/uautomizer-verify-WvqO1wxjHP/mathsat [2023-11-06 22:31:42,559 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a46f760-6526-4a6e-8e5a-7fec075d7a49/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 22:31:42,560 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a46f760-6526-4a6e-8e5a-7fec075d7a49/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 22:31:42,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:31:42,775 INFO L262 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-06 22:31:42,778 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:31:42,789 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 22:31:42,790 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:31:42,790 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-06 22:31:42,790 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [209119433] [2023-11-06 22:31:42,790 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [209119433] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:31:42,790 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:31:42,790 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 22:31:42,790 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1109287264] [2023-11-06 22:31:42,790 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:31:42,791 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:31:42,791 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-06 22:31:42,791 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:31:42,791 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:31:42,791 INFO L87 Difference]: Start difference. First operand 1367 states and 1627 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 22:31:42,821 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:31:42,821 INFO L93 Difference]: Finished difference Result 1307 states and 1541 transitions. [2023-11-06 22:31:42,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:31:42,822 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 22:31:42,822 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:31:42,827 INFO L225 Difference]: With dead ends: 1307 [2023-11-06 22:31:42,827 INFO L226 Difference]: Without dead ends: 1307 [2023-11-06 22:31:42,827 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 22:31:42,828 INFO L413 NwaCegarLoop]: 1101 mSDtfsCounter, 81 mSDsluCounter, 1029 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 81 SdHoareTripleChecker+Valid, 2130 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 22:31:42,829 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [81 Valid, 2130 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-06 22:31:42,831 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1307 states. [2023-11-06 22:31:42,846 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1307 to 1307. [2023-11-06 22:31:42,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1307 states, 816 states have (on average 1.8786764705882353) internal successors, (1533), 1301 states have internal predecessors, (1533), 5 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-06 22:31:42,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1307 states to 1307 states and 1541 transitions. [2023-11-06 22:31:42,854 INFO L78 Accepts]: Start accepts. Automaton has 1307 states and 1541 transitions. Word has length 18 [2023-11-06 22:31:42,854 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:31:42,854 INFO L495 AbstractCegarLoop]: Abstraction has 1307 states and 1541 transitions. [2023-11-06 22:31:42,854 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 22:31:42,855 INFO L276 IsEmpty]: Start isEmpty. Operand 1307 states and 1541 transitions. [2023-11-06 22:31:42,855 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2023-11-06 22:31:42,855 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:31:42,856 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 22:31:42,873 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a46f760-6526-4a6e-8e5a-7fec075d7a49/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 22:31:43,073 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a46f760-6526-4a6e-8e5a-7fec075d7a49/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 22:31:43,073 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr38REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 631 more)] === [2023-11-06 22:31:43,073 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:31:43,073 INFO L85 PathProgramCache]: Analyzing trace with hash 1314847992, now seen corresponding path program 1 times [2023-11-06 22:31:43,074 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-06 22:31:43,074 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1366308692] [2023-11-06 22:31:43,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:31:43,074 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 22:31:43,074 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a46f760-6526-4a6e-8e5a-7fec075d7a49/bin/uautomizer-verify-WvqO1wxjHP/mathsat [2023-11-06 22:31:43,075 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a46f760-6526-4a6e-8e5a-7fec075d7a49/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 22:31:43,076 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a46f760-6526-4a6e-8e5a-7fec075d7a49/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 22:31:43,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:31:43,298 INFO L262 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-06 22:31:43,300 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:31:43,327 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 22:31:43,327 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:31:43,327 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-06 22:31:43,327 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1366308692] [2023-11-06 22:31:43,327 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1366308692] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:31:43,328 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:31:43,328 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-06 22:31:43,328 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [249211074] [2023-11-06 22:31:43,328 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:31:43,328 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 22:31:43,329 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-06 22:31:43,329 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 22:31:43,329 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-06 22:31:43,329 INFO L87 Difference]: Start difference. First operand 1307 states and 1541 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 22:31:43,429 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:31:43,429 INFO L93 Difference]: Finished difference Result 1279 states and 1485 transitions. [2023-11-06 22:31:43,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-06 22:31:43,429 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 22:31:43,430 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:31:43,436 INFO L225 Difference]: With dead ends: 1279 [2023-11-06 22:31:43,436 INFO L226 Difference]: Without dead ends: 1279 [2023-11-06 22:31:43,437 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 22:31:43,437 INFO L413 NwaCegarLoop]: 1056 mSDtfsCounter, 62 mSDsluCounter, 2078 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 3134 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 22:31:43,438 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [62 Valid, 3134 Invalid, 57 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-06 22:31:43,441 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1279 states. [2023-11-06 22:31:43,455 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1279 to 1277. [2023-11-06 22:31:43,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1277 states, 800 states have (on average 1.84375) internal successors, (1475), 1271 states have internal predecessors, (1475), 5 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-06 22:31:43,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1277 states to 1277 states and 1483 transitions. [2023-11-06 22:31:43,462 INFO L78 Accepts]: Start accepts. Automaton has 1277 states and 1483 transitions. Word has length 20 [2023-11-06 22:31:43,462 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:31:43,462 INFO L495 AbstractCegarLoop]: Abstraction has 1277 states and 1483 transitions. [2023-11-06 22:31:43,462 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 22:31:43,462 INFO L276 IsEmpty]: Start isEmpty. Operand 1277 states and 1483 transitions. [2023-11-06 22:31:43,464 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2023-11-06 22:31:43,465 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:31:43,465 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 22:31:43,477 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a46f760-6526-4a6e-8e5a-7fec075d7a49/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 22:31:43,677 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a46f760-6526-4a6e-8e5a-7fec075d7a49/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 22:31:43,677 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr52REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 631 more)] === [2023-11-06 22:31:43,677 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:31:43,677 INFO L85 PathProgramCache]: Analyzing trace with hash 1346685766, now seen corresponding path program 1 times [2023-11-06 22:31:43,678 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-06 22:31:43,678 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2102027952] [2023-11-06 22:31:43,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:31:43,678 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 22:31:43,678 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a46f760-6526-4a6e-8e5a-7fec075d7a49/bin/uautomizer-verify-WvqO1wxjHP/mathsat [2023-11-06 22:31:43,679 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a46f760-6526-4a6e-8e5a-7fec075d7a49/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 22:31:43,680 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a46f760-6526-4a6e-8e5a-7fec075d7a49/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 22:31:43,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:31:43,873 INFO L262 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-06 22:31:43,878 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:31:43,885 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 22:31:44,001 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 22:31:44,002 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:31:44,002 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-06 22:31:44,002 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2102027952] [2023-11-06 22:31:44,002 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2102027952] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:31:44,003 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:31:44,003 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 22:31:44,003 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1892737195] [2023-11-06 22:31:44,003 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:31:44,003 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 22:31:44,004 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-06 22:31:44,004 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 22:31:44,004 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-06 22:31:44,004 INFO L87 Difference]: Start difference. First operand 1277 states and 1483 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 22:31:47,040 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:31:47,040 INFO L93 Difference]: Finished difference Result 1666 states and 1986 transitions. [2023-11-06 22:31:47,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-06 22:31:47,043 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 22:31:47,043 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:31:47,051 INFO L225 Difference]: With dead ends: 1666 [2023-11-06 22:31:47,051 INFO L226 Difference]: Without dead ends: 1666 [2023-11-06 22:31:47,051 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 22:31:47,052 INFO L413 NwaCegarLoop]: 668 mSDtfsCounter, 826 mSDsluCounter, 818 mSDsCounter, 0 mSdLazyCounter, 1229 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 829 SdHoareTripleChecker+Valid, 1486 SdHoareTripleChecker+Invalid, 1237 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 1229 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2023-11-06 22:31:47,052 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [829 Valid, 1486 Invalid, 1237 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 1229 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2023-11-06 22:31:47,055 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1666 states. [2023-11-06 22:31:47,088 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1666 to 1273. [2023-11-06 22:31:47,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1273 states, 800 states have (on average 1.83375) internal successors, (1467), 1267 states have internal predecessors, (1467), 5 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-06 22:31:47,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1273 states to 1273 states and 1475 transitions. [2023-11-06 22:31:47,093 INFO L78 Accepts]: Start accepts. Automaton has 1273 states and 1475 transitions. Word has length 34 [2023-11-06 22:31:47,093 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:31:47,094 INFO L495 AbstractCegarLoop]: Abstraction has 1273 states and 1475 transitions. [2023-11-06 22:31:47,094 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 22:31:47,094 INFO L276 IsEmpty]: Start isEmpty. Operand 1273 states and 1475 transitions. [2023-11-06 22:31:47,095 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2023-11-06 22:31:47,095 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:31:47,095 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 22:31:47,107 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a46f760-6526-4a6e-8e5a-7fec075d7a49/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 22:31:47,307 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a46f760-6526-4a6e-8e5a-7fec075d7a49/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 22:31:47,307 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr53REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 631 more)] === [2023-11-06 22:31:47,308 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:31:47,308 INFO L85 PathProgramCache]: Analyzing trace with hash 1346685767, now seen corresponding path program 1 times [2023-11-06 22:31:47,308 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-06 22:31:47,308 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [705218732] [2023-11-06 22:31:47,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:31:47,309 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 22:31:47,309 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a46f760-6526-4a6e-8e5a-7fec075d7a49/bin/uautomizer-verify-WvqO1wxjHP/mathsat [2023-11-06 22:31:47,310 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a46f760-6526-4a6e-8e5a-7fec075d7a49/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 22:31:47,315 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a46f760-6526-4a6e-8e5a-7fec075d7a49/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 22:31:47,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:31:47,540 INFO L262 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-06 22:31:47,543 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:31:47,551 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 22:31:47,799 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 22:31:47,799 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:31:47,801 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-06 22:31:47,801 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [705218732] [2023-11-06 22:31:47,801 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [705218732] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:31:47,801 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:31:47,801 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 22:31:47,801 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1060749150] [2023-11-06 22:31:47,801 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:31:47,802 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 22:31:47,802 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-06 22:31:47,803 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 22:31:47,803 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-06 22:31:47,803 INFO L87 Difference]: Start difference. First operand 1273 states and 1475 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 22:31:52,152 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:31:52,152 INFO L93 Difference]: Finished difference Result 1777 states and 2076 transitions. [2023-11-06 22:31:52,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-06 22:31:52,153 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 22:31:52,153 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:31:52,159 INFO L225 Difference]: With dead ends: 1777 [2023-11-06 22:31:52,160 INFO L226 Difference]: Without dead ends: 1777 [2023-11-06 22:31:52,160 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 22:31:52,160 INFO L413 NwaCegarLoop]: 1277 mSDtfsCounter, 531 mSDsluCounter, 1257 mSDsCounter, 0 mSdLazyCounter, 1396 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 531 SdHoareTripleChecker+Valid, 2534 SdHoareTripleChecker+Invalid, 1399 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 1396 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.3s IncrementalHoareTripleChecker+Time [2023-11-06 22:31:52,161 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [531 Valid, 2534 Invalid, 1399 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 1396 Invalid, 0 Unknown, 0 Unchecked, 4.3s Time] [2023-11-06 22:31:52,164 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1777 states. [2023-11-06 22:31:52,177 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1777 to 1269. [2023-11-06 22:31:52,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1269 states, 800 states have (on average 1.82375) internal successors, (1459), 1263 states have internal predecessors, (1459), 5 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-06 22:31:52,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1269 states to 1269 states and 1467 transitions. [2023-11-06 22:31:52,183 INFO L78 Accepts]: Start accepts. Automaton has 1269 states and 1467 transitions. Word has length 34 [2023-11-06 22:31:52,183 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:31:52,183 INFO L495 AbstractCegarLoop]: Abstraction has 1269 states and 1467 transitions. [2023-11-06 22:31:52,183 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 22:31:52,183 INFO L276 IsEmpty]: Start isEmpty. Operand 1269 states and 1467 transitions. [2023-11-06 22:31:52,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2023-11-06 22:31:52,185 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:31:52,185 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 22:31:52,200 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a46f760-6526-4a6e-8e5a-7fec075d7a49/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 22:31:52,397 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a46f760-6526-4a6e-8e5a-7fec075d7a49/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 22:31:52,398 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr71REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 631 more)] === [2023-11-06 22:31:52,398 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:31:52,398 INFO L85 PathProgramCache]: Analyzing trace with hash -585509776, now seen corresponding path program 1 times [2023-11-06 22:31:52,399 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-06 22:31:52,399 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1458396624] [2023-11-06 22:31:52,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:31:52,399 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 22:31:52,399 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a46f760-6526-4a6e-8e5a-7fec075d7a49/bin/uautomizer-verify-WvqO1wxjHP/mathsat [2023-11-06 22:31:52,400 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a46f760-6526-4a6e-8e5a-7fec075d7a49/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 22:31:52,403 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a46f760-6526-4a6e-8e5a-7fec075d7a49/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 22:31:52,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:31:52,710 INFO L262 TraceCheckSpWp]: Trace formula consists of 254 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-06 22:31:52,712 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:31:52,766 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 22:31:52,766 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:31:52,766 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-06 22:31:52,766 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1458396624] [2023-11-06 22:31:52,766 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1458396624] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:31:52,767 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:31:52,767 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-06 22:31:52,767 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1551937423] [2023-11-06 22:31:52,767 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:31:52,767 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 22:31:52,768 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-06 22:31:52,768 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 22:31:52,768 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-06 22:31:52,768 INFO L87 Difference]: Start difference. First operand 1269 states and 1467 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 22:31:52,838 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:31:52,839 INFO L93 Difference]: Finished difference Result 1257 states and 1447 transitions. [2023-11-06 22:31:52,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-06 22:31:52,839 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 22:31:52,842 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:31:52,848 INFO L225 Difference]: With dead ends: 1257 [2023-11-06 22:31:52,848 INFO L226 Difference]: Without dead ends: 1257 [2023-11-06 22:31:52,848 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 22:31:52,849 INFO L413 NwaCegarLoop]: 1050 mSDtfsCounter, 31 mSDsluCounter, 2062 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 3112 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-06 22:31:52,849 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 3112 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-06 22:31:52,852 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1257 states. [2023-11-06 22:31:52,866 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1257 to 1257. [2023-11-06 22:31:52,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1257 states, 788 states have (on average 1.8261421319796953) internal successors, (1439), 1251 states have internal predecessors, (1439), 5 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-06 22:31:52,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1257 states to 1257 states and 1447 transitions. [2023-11-06 22:31:52,870 INFO L78 Accepts]: Start accepts. Automaton has 1257 states and 1447 transitions. Word has length 53 [2023-11-06 22:31:52,871 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:31:52,871 INFO L495 AbstractCegarLoop]: Abstraction has 1257 states and 1447 transitions. [2023-11-06 22:31:52,871 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 22:31:52,871 INFO L276 IsEmpty]: Start isEmpty. Operand 1257 states and 1447 transitions. [2023-11-06 22:31:52,874 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2023-11-06 22:31:52,874 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:31:52,874 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 22:31:52,893 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a46f760-6526-4a6e-8e5a-7fec075d7a49/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 22:31:53,093 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a46f760-6526-4a6e-8e5a-7fec075d7a49/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 22:31:53,093 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr71REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 631 more)] === [2023-11-06 22:31:53,093 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:31:53,093 INFO L85 PathProgramCache]: Analyzing trace with hash -1514336476, now seen corresponding path program 1 times [2023-11-06 22:31:53,094 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-06 22:31:53,094 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [13085933] [2023-11-06 22:31:53,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:31:53,094 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 22:31:53,094 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a46f760-6526-4a6e-8e5a-7fec075d7a49/bin/uautomizer-verify-WvqO1wxjHP/mathsat [2023-11-06 22:31:53,095 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a46f760-6526-4a6e-8e5a-7fec075d7a49/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 22:31:53,100 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a46f760-6526-4a6e-8e5a-7fec075d7a49/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 22:31:53,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:31:53,537 INFO L262 TraceCheckSpWp]: Trace formula consists of 278 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-06 22:31:53,540 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:31:53,548 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 22:31:53,557 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 22:31:54,206 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:31:54,207 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 22:31:54,222 INFO L322 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2023-11-06 22:31:54,222 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 22:31:54,234 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 22:31:54,234 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:31:54,235 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-06 22:31:54,235 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [13085933] [2023-11-06 22:31:54,235 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [13085933] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:31:54,235 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:31:54,235 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 22:31:54,236 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [239485283] [2023-11-06 22:31:54,236 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:31:54,236 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 22:31:54,236 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-06 22:31:54,237 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 22:31:54,237 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-06 22:31:54,237 INFO L87 Difference]: Start difference. First operand 1257 states and 1447 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 22:31:57,516 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:31:57,517 INFO L93 Difference]: Finished difference Result 1612 states and 1920 transitions. [2023-11-06 22:31:57,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-06 22:31:57,518 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 22:31:57,518 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:31:57,525 INFO L225 Difference]: With dead ends: 1612 [2023-11-06 22:31:57,525 INFO L226 Difference]: Without dead ends: 1612 [2023-11-06 22:31:57,525 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 22:31:57,526 INFO L413 NwaCegarLoop]: 505 mSDtfsCounter, 1775 mSDsluCounter, 251 mSDsCounter, 0 mSdLazyCounter, 872 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1778 SdHoareTripleChecker+Valid, 756 SdHoareTripleChecker+Invalid, 920 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 872 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2023-11-06 22:31:57,526 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1778 Valid, 756 Invalid, 920 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 872 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2023-11-06 22:31:57,529 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1612 states. [2023-11-06 22:31:57,540 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1612 to 1187. [2023-11-06 22:31:57,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1187 states, 756 states have (on average 1.7658730158730158) internal successors, (1335), 1181 states have internal predecessors, (1335), 5 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-06 22:31:57,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1187 states to 1187 states and 1343 transitions. [2023-11-06 22:31:57,544 INFO L78 Accepts]: Start accepts. Automaton has 1187 states and 1343 transitions. Word has length 61 [2023-11-06 22:31:57,545 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:31:57,545 INFO L495 AbstractCegarLoop]: Abstraction has 1187 states and 1343 transitions. [2023-11-06 22:31:57,545 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 22:31:57,545 INFO L276 IsEmpty]: Start isEmpty. Operand 1187 states and 1343 transitions. [2023-11-06 22:31:57,546 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2023-11-06 22:31:57,546 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:31:57,546 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 22:31:57,560 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a46f760-6526-4a6e-8e5a-7fec075d7a49/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)] Forceful destruction successful, exit code 0 [2023-11-06 22:31:57,759 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a46f760-6526-4a6e-8e5a-7fec075d7a49/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 22:31:57,760 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr76REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 631 more)] === [2023-11-06 22:31:57,760 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:31:57,760 INFO L85 PathProgramCache]: Analyzing trace with hash 1287372127, now seen corresponding path program 1 times [2023-11-06 22:31:57,760 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-06 22:31:57,760 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1187278215] [2023-11-06 22:31:57,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:31:57,761 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 22:31:57,761 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a46f760-6526-4a6e-8e5a-7fec075d7a49/bin/uautomizer-verify-WvqO1wxjHP/mathsat [2023-11-06 22:31:57,761 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a46f760-6526-4a6e-8e5a-7fec075d7a49/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 22:31:57,772 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a46f760-6526-4a6e-8e5a-7fec075d7a49/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 22:31:58,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:31:58,074 INFO L262 TraceCheckSpWp]: Trace formula consists of 305 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-06 22:31:58,076 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:31:58,083 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 22:31:58,109 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 22:31:58,134 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 22:31:58,146 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 22:31:58,146 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:31:58,146 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-06 22:31:58,146 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1187278215] [2023-11-06 22:31:58,146 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1187278215] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:31:58,146 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:31:58,147 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-06 22:31:58,147 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [468758821] [2023-11-06 22:31:58,147 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:31:58,147 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-06 22:31:58,147 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-06 22:31:58,148 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-06 22:31:58,148 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-06 22:31:58,148 INFO L87 Difference]: Start difference. First operand 1187 states and 1343 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 22:32:01,339 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:32:01,339 INFO L93 Difference]: Finished difference Result 1186 states and 1342 transitions. [2023-11-06 22:32:01,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-06 22:32:01,339 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 22:32:01,340 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:32:01,345 INFO L225 Difference]: With dead ends: 1186 [2023-11-06 22:32:01,346 INFO L226 Difference]: Without dead ends: 1186 [2023-11-06 22:32:01,346 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-11-06 22:32:01,346 INFO L413 NwaCegarLoop]: 1023 mSDtfsCounter, 4 mSDsluCounter, 1585 mSDsCounter, 0 mSdLazyCounter, 1489 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 2608 SdHoareTripleChecker+Invalid, 1490 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1489 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2023-11-06 22:32:01,347 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 2608 Invalid, 1490 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1489 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2023-11-06 22:32:01,349 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1186 states. [2023-11-06 22:32:01,357 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1186 to 1186. [2023-11-06 22:32:01,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1186 states, 756 states have (on average 1.7645502645502646) internal successors, (1334), 1180 states have internal predecessors, (1334), 5 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-06 22:32:01,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1186 states to 1186 states and 1342 transitions. [2023-11-06 22:32:01,360 INFO L78 Accepts]: Start accepts. Automaton has 1186 states and 1342 transitions. Word has length 66 [2023-11-06 22:32:01,360 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:32:01,361 INFO L495 AbstractCegarLoop]: Abstraction has 1186 states and 1342 transitions. [2023-11-06 22:32:01,361 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 22:32:01,361 INFO L276 IsEmpty]: Start isEmpty. Operand 1186 states and 1342 transitions. [2023-11-06 22:32:01,361 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2023-11-06 22:32:01,361 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:32:01,361 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 22:32:01,378 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a46f760-6526-4a6e-8e5a-7fec075d7a49/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)] Forceful destruction successful, exit code 0 [2023-11-06 22:32:01,562 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a46f760-6526-4a6e-8e5a-7fec075d7a49/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 22:32:01,562 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr77REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 631 more)] === [2023-11-06 22:32:01,562 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:32:01,562 INFO L85 PathProgramCache]: Analyzing trace with hash 1287372128, now seen corresponding path program 1 times [2023-11-06 22:32:01,563 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-06 22:32:01,563 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [190994653] [2023-11-06 22:32:01,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:32:01,563 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 22:32:01,563 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a46f760-6526-4a6e-8e5a-7fec075d7a49/bin/uautomizer-verify-WvqO1wxjHP/mathsat [2023-11-06 22:32:01,565 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a46f760-6526-4a6e-8e5a-7fec075d7a49/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 22:32:01,567 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a46f760-6526-4a6e-8e5a-7fec075d7a49/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 22:32:01,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:32:01,872 INFO L262 TraceCheckSpWp]: Trace formula consists of 305 conjuncts, 11 conjunts are in the unsatisfiable core [2023-11-06 22:32:01,875 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:32:01,904 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 22:32:01,924 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 22:32:01,929 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 22:32:01,991 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 22:32:02,008 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 22:32:02,008 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:32:02,008 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-06 22:32:02,010 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [190994653] [2023-11-06 22:32:02,010 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [190994653] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:32:02,011 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:32:02,011 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-06 22:32:02,011 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1774509226] [2023-11-06 22:32:02,011 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:32:02,011 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-06 22:32:02,011 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-06 22:32:02,012 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-06 22:32:02,012 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-06 22:32:02,012 INFO L87 Difference]: Start difference. First operand 1186 states and 1342 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 22:32:06,124 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:32:06,124 INFO L93 Difference]: Finished difference Result 1185 states and 1341 transitions. [2023-11-06 22:32:06,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-06 22:32:06,125 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 22:32:06,125 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:32:06,130 INFO L225 Difference]: With dead ends: 1185 [2023-11-06 22:32:06,130 INFO L226 Difference]: Without dead ends: 1185 [2023-11-06 22:32:06,131 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 22:32:06,131 INFO L413 NwaCegarLoop]: 1023 mSDtfsCounter, 2 mSDsluCounter, 1642 mSDsCounter, 0 mSdLazyCounter, 1430 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 2665 SdHoareTripleChecker+Invalid, 1431 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1430 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.0s IncrementalHoareTripleChecker+Time [2023-11-06 22:32:06,132 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 2665 Invalid, 1431 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1430 Invalid, 0 Unknown, 0 Unchecked, 4.0s Time] [2023-11-06 22:32:06,134 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1185 states. [2023-11-06 22:32:06,144 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1185 to 1185. [2023-11-06 22:32:06,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1185 states, 755 states have (on average 1.7655629139072848) internal successors, (1333), 1179 states have internal predecessors, (1333), 5 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-06 22:32:06,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1185 states to 1185 states and 1341 transitions. [2023-11-06 22:32:06,147 INFO L78 Accepts]: Start accepts. Automaton has 1185 states and 1341 transitions. Word has length 66 [2023-11-06 22:32:06,147 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:32:06,148 INFO L495 AbstractCegarLoop]: Abstraction has 1185 states and 1341 transitions. [2023-11-06 22:32:06,148 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 22:32:06,148 INFO L276 IsEmpty]: Start isEmpty. Operand 1185 states and 1341 transitions. [2023-11-06 22:32:06,148 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2023-11-06 22:32:06,149 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:32:06,149 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 22:32:06,168 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a46f760-6526-4a6e-8e5a-7fec075d7a49/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 22:32:06,363 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a46f760-6526-4a6e-8e5a-7fec075d7a49/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 22:32:06,363 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr80REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 631 more)] === [2023-11-06 22:32:06,364 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:32:06,364 INFO L85 PathProgramCache]: Analyzing trace with hash -1245032602, now seen corresponding path program 1 times [2023-11-06 22:32:06,364 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-06 22:32:06,364 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [668229917] [2023-11-06 22:32:06,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:32:06,364 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 22:32:06,365 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a46f760-6526-4a6e-8e5a-7fec075d7a49/bin/uautomizer-verify-WvqO1wxjHP/mathsat [2023-11-06 22:32:06,365 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a46f760-6526-4a6e-8e5a-7fec075d7a49/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 22:32:06,366 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a46f760-6526-4a6e-8e5a-7fec075d7a49/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 22:32:06,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:32:06,713 INFO L262 TraceCheckSpWp]: Trace formula consists of 332 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-06 22:32:06,715 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:32:06,744 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 22:32:06,744 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:32:06,744 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-06 22:32:06,744 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [668229917] [2023-11-06 22:32:06,744 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [668229917] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:32:06,745 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:32:06,745 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-06 22:32:06,745 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [352426230] [2023-11-06 22:32:06,745 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:32:06,745 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 22:32:06,746 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-06 22:32:06,746 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 22:32:06,747 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-06 22:32:06,747 INFO L87 Difference]: Start difference. First operand 1185 states and 1341 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 22:32:06,796 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:32:06,796 INFO L93 Difference]: Finished difference Result 1188 states and 1345 transitions. [2023-11-06 22:32:06,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-06 22:32:06,797 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 22:32:06,797 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:32:06,804 INFO L225 Difference]: With dead ends: 1188 [2023-11-06 22:32:06,804 INFO L226 Difference]: Without dead ends: 1188 [2023-11-06 22:32:06,804 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 22:32:06,805 INFO L413 NwaCegarLoop]: 1023 mSDtfsCounter, 2 mSDsluCounter, 2041 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 3064 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 22:32:06,805 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 3064 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-06 22:32:06,808 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1188 states. [2023-11-06 22:32:06,825 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1188 to 1188. [2023-11-06 22:32:06,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1188 states, 757 states have (on average 1.7648612945838837) internal successors, (1336), 1182 states have internal predecessors, (1336), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2023-11-06 22:32:06,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1188 states to 1188 states and 1345 transitions. [2023-11-06 22:32:06,830 INFO L78 Accepts]: Start accepts. Automaton has 1188 states and 1345 transitions. Word has length 74 [2023-11-06 22:32:06,830 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:32:06,830 INFO L495 AbstractCegarLoop]: Abstraction has 1188 states and 1345 transitions. [2023-11-06 22:32:06,831 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 22:32:06,831 INFO L276 IsEmpty]: Start isEmpty. Operand 1188 states and 1345 transitions. [2023-11-06 22:32:06,831 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2023-11-06 22:32:06,832 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:32:06,832 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 22:32:06,852 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a46f760-6526-4a6e-8e5a-7fec075d7a49/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 22:32:07,052 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a46f760-6526-4a6e-8e5a-7fec075d7a49/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 22:32:07,052 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr80REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 631 more)] === [2023-11-06 22:32:07,052 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:32:07,053 INFO L85 PathProgramCache]: Analyzing trace with hash 805225742, now seen corresponding path program 1 times [2023-11-06 22:32:07,053 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-06 22:32:07,053 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1720711983] [2023-11-06 22:32:07,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:32:07,053 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 22:32:07,054 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a46f760-6526-4a6e-8e5a-7fec075d7a49/bin/uautomizer-verify-WvqO1wxjHP/mathsat [2023-11-06 22:32:07,055 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a46f760-6526-4a6e-8e5a-7fec075d7a49/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 22:32:07,104 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a46f760-6526-4a6e-8e5a-7fec075d7a49/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 22:32:07,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:32:07,467 INFO L262 TraceCheckSpWp]: Trace formula consists of 343 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-06 22:32:07,469 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:32:07,500 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 22:32:07,500 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:32:07,598 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 22:32:07,599 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-06 22:32:07,599 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1720711983] [2023-11-06 22:32:07,599 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1720711983] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:32:07,599 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-06 22:32:07,599 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2023-11-06 22:32:07,599 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2023266145] [2023-11-06 22:32:07,599 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-06 22:32:07,600 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-06 22:32:07,600 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-06 22:32:07,601 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-06 22:32:07,601 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-11-06 22:32:07,601 INFO L87 Difference]: Start difference. First operand 1188 states and 1345 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 22:32:07,838 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:32:07,839 INFO L93 Difference]: Finished difference Result 1200 states and 1362 transitions. [2023-11-06 22:32:07,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-06 22:32:07,840 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 22:32:07,840 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:32:07,845 INFO L225 Difference]: With dead ends: 1200 [2023-11-06 22:32:07,845 INFO L226 Difference]: Without dead ends: 1200 [2023-11-06 22:32:07,846 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 22:32:07,846 INFO L413 NwaCegarLoop]: 1024 mSDtfsCounter, 9 mSDsluCounter, 6113 mSDsCounter, 0 mSdLazyCounter, 68 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 7137 SdHoareTripleChecker+Invalid, 73 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 68 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-06 22:32:07,846 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 7137 Invalid, 73 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 68 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-06 22:32:07,849 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1200 states. [2023-11-06 22:32:07,892 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1200 to 1198. [2023-11-06 22:32:07,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1198 states, 766 states have (on average 1.7637075718015667) internal successors, (1351), 1191 states have internal predecessors, (1351), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2023-11-06 22:32:07,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1198 states to 1198 states and 1360 transitions. [2023-11-06 22:32:07,896 INFO L78 Accepts]: Start accepts. Automaton has 1198 states and 1360 transitions. Word has length 75 [2023-11-06 22:32:07,897 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:32:07,897 INFO L495 AbstractCegarLoop]: Abstraction has 1198 states and 1360 transitions. [2023-11-06 22:32:07,897 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 22:32:07,897 INFO L276 IsEmpty]: Start isEmpty. Operand 1198 states and 1360 transitions. [2023-11-06 22:32:07,898 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2023-11-06 22:32:07,898 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:32:07,898 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 22:32:07,921 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a46f760-6526-4a6e-8e5a-7fec075d7a49/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 22:32:08,123 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a46f760-6526-4a6e-8e5a-7fec075d7a49/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 22:32:08,123 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr80REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 631 more)] === [2023-11-06 22:32:08,124 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:32:08,124 INFO L85 PathProgramCache]: Analyzing trace with hash -636585626, now seen corresponding path program 2 times [2023-11-06 22:32:08,124 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-06 22:32:08,124 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [803690166] [2023-11-06 22:32:08,125 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-06 22:32:08,125 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 22:32:08,125 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a46f760-6526-4a6e-8e5a-7fec075d7a49/bin/uautomizer-verify-WvqO1wxjHP/mathsat [2023-11-06 22:32:08,126 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a46f760-6526-4a6e-8e5a-7fec075d7a49/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 22:32:08,127 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a46f760-6526-4a6e-8e5a-7fec075d7a49/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 22:32:08,648 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-06 22:32:08,648 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-06 22:32:08,664 INFO L262 TraceCheckSpWp]: Trace formula consists of 376 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-06 22:32:08,666 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:32:08,741 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 22:32:08,742 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:32:08,940 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 22:32:08,941 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-06 22:32:08,941 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [803690166] [2023-11-06 22:32:08,941 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [803690166] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:32:08,941 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-06 22:32:08,941 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 14 [2023-11-06 22:32:08,941 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [959302456] [2023-11-06 22:32:08,942 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-06 22:32:08,942 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-11-06 22:32:08,942 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-06 22:32:08,943 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-11-06 22:32:08,943 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=121, Unknown=0, NotChecked=0, Total=182 [2023-11-06 22:32:08,943 INFO L87 Difference]: Start difference. First operand 1198 states and 1360 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 22:32:09,605 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:32:09,605 INFO L93 Difference]: Finished difference Result 1219 states and 1388 transitions. [2023-11-06 22:32:09,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2023-11-06 22:32:09,606 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 22:32:09,606 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:32:09,611 INFO L225 Difference]: With dead ends: 1219 [2023-11-06 22:32:09,611 INFO L226 Difference]: Without dead ends: 1215 [2023-11-06 22:32:09,612 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 22:32:09,612 INFO L413 NwaCegarLoop]: 1027 mSDtfsCounter, 24 mSDsluCounter, 6137 mSDsCounter, 0 mSdLazyCounter, 198 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 7164 SdHoareTripleChecker+Invalid, 218 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 198 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-06 22:32:09,613 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 7164 Invalid, 218 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 198 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-06 22:32:09,615 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1215 states. [2023-11-06 22:32:09,631 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1215 to 1207. [2023-11-06 22:32:09,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1207 states, 775 states have (on average 1.758709677419355) internal successors, (1363), 1200 states have internal predecessors, (1363), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2023-11-06 22:32:09,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1207 states to 1207 states and 1372 transitions. [2023-11-06 22:32:09,636 INFO L78 Accepts]: Start accepts. Automaton has 1207 states and 1372 transitions. Word has length 78 [2023-11-06 22:32:09,636 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:32:09,636 INFO L495 AbstractCegarLoop]: Abstraction has 1207 states and 1372 transitions. [2023-11-06 22:32:09,637 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 22:32:09,637 INFO L276 IsEmpty]: Start isEmpty. Operand 1207 states and 1372 transitions. [2023-11-06 22:32:09,637 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2023-11-06 22:32:09,638 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:32:09,638 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 22:32:09,660 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a46f760-6526-4a6e-8e5a-7fec075d7a49/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 22:32:09,852 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a46f760-6526-4a6e-8e5a-7fec075d7a49/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 22:32:09,853 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr80REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 631 more)] === [2023-11-06 22:32:09,853 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:32:09,853 INFO L85 PathProgramCache]: Analyzing trace with hash -952674202, now seen corresponding path program 3 times [2023-11-06 22:32:09,854 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-06 22:32:09,854 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [165910111] [2023-11-06 22:32:09,854 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-06 22:32:09,854 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 22:32:09,854 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a46f760-6526-4a6e-8e5a-7fec075d7a49/bin/uautomizer-verify-WvqO1wxjHP/mathsat [2023-11-06 22:32:09,855 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a46f760-6526-4a6e-8e5a-7fec075d7a49/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 22:32:09,856 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a46f760-6526-4a6e-8e5a-7fec075d7a49/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 22:32:10,644 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2023-11-06 22:32:10,644 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-06 22:32:10,663 INFO L262 TraceCheckSpWp]: Trace formula consists of 442 conjuncts, 14 conjunts are in the unsatisfiable core [2023-11-06 22:32:10,665 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:32:10,840 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 22:32:10,840 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:32:11,604 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 22:32:11,604 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-06 22:32:11,604 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [165910111] [2023-11-06 22:32:11,604 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [165910111] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:32:11,605 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-06 22:32:11,605 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 26 [2023-11-06 22:32:11,605 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1914740420] [2023-11-06 22:32:11,605 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-06 22:32:11,605 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-11-06 22:32:11,606 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-06 22:32:11,606 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-11-06 22:32:11,607 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=193, Invalid=457, Unknown=0, NotChecked=0, Total=650 [2023-11-06 22:32:11,607 INFO L87 Difference]: Start difference. First operand 1207 states and 1372 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 22:32:14,418 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:32:14,418 INFO L93 Difference]: Finished difference Result 1249 states and 1434 transitions. [2023-11-06 22:32:14,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2023-11-06 22:32:14,425 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 22:32:14,425 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:32:14,438 INFO L225 Difference]: With dead ends: 1249 [2023-11-06 22:32:14,439 INFO L226 Difference]: Without dead ends: 1243 [2023-11-06 22:32:14,440 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 189 GetRequests, 142 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 231 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=793, Invalid=1559, Unknown=0, NotChecked=0, Total=2352 [2023-11-06 22:32:14,440 INFO L413 NwaCegarLoop]: 1032 mSDtfsCounter, 56 mSDsluCounter, 14360 mSDsCounter, 0 mSdLazyCounter, 778 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 15392 SdHoareTripleChecker+Invalid, 811 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 778 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-11-06 22:32:14,441 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [56 Valid, 15392 Invalid, 811 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 778 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-11-06 22:32:14,444 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1243 states. [2023-11-06 22:32:14,476 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1243 to 1225. [2023-11-06 22:32:14,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1225 states, 793 states have (on average 1.7477931904161412) internal successors, (1386), 1218 states have internal predecessors, (1386), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2023-11-06 22:32:14,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1225 states to 1225 states and 1395 transitions. [2023-11-06 22:32:14,491 INFO L78 Accepts]: Start accepts. Automaton has 1225 states and 1395 transitions. Word has length 84 [2023-11-06 22:32:14,491 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:32:14,491 INFO L495 AbstractCegarLoop]: Abstraction has 1225 states and 1395 transitions. [2023-11-06 22:32:14,491 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 22:32:14,492 INFO L276 IsEmpty]: Start isEmpty. Operand 1225 states and 1395 transitions. [2023-11-06 22:32:14,492 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2023-11-06 22:32:14,493 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:32:14,493 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 22:32:14,508 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a46f760-6526-4a6e-8e5a-7fec075d7a49/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 22:32:14,704 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a46f760-6526-4a6e-8e5a-7fec075d7a49/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 22:32:14,704 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr80REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 631 more)] === [2023-11-06 22:32:14,705 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:32:14,705 INFO L85 PathProgramCache]: Analyzing trace with hash 1473205862, now seen corresponding path program 4 times [2023-11-06 22:32:14,705 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-06 22:32:14,705 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1219695486] [2023-11-06 22:32:14,706 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-11-06 22:32:14,706 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 22:32:14,706 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a46f760-6526-4a6e-8e5a-7fec075d7a49/bin/uautomizer-verify-WvqO1wxjHP/mathsat [2023-11-06 22:32:14,707 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a46f760-6526-4a6e-8e5a-7fec075d7a49/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 22:32:14,708 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a46f760-6526-4a6e-8e5a-7fec075d7a49/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 22:32:15,146 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-11-06 22:32:15,146 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-06 22:32:15,165 INFO L262 TraceCheckSpWp]: Trace formula consists of 574 conjuncts, 25 conjunts are in the unsatisfiable core [2023-11-06 22:32:15,167 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:32:15,701 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 22:32:15,701 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:32:17,638 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 22:32:17,639 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-06 22:32:17,639 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1219695486] [2023-11-06 22:32:17,639 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1219695486] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:32:17,639 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-06 22:32:17,640 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26] total 50 [2023-11-06 22:32:17,640 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [781145220] [2023-11-06 22:32:17,640 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-06 22:32:17,640 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 50 states [2023-11-06 22:32:17,641 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-06 22:32:17,642 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2023-11-06 22:32:17,643 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=672, Invalid=1778, Unknown=0, NotChecked=0, Total=2450 [2023-11-06 22:32:17,643 INFO L87 Difference]: Start difference. First operand 1225 states and 1395 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 22:32:27,359 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:32:27,359 INFO L93 Difference]: Finished difference Result 1305 states and 1507 transitions. [2023-11-06 22:32:27,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 92 states. [2023-11-06 22:32:27,363 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 22:32:27,363 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:32:27,367 INFO L225 Difference]: With dead ends: 1305 [2023-11-06 22:32:27,367 INFO L226 Difference]: Without dead ends: 1301 [2023-11-06 22:32:27,371 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 22:32:27,372 INFO L413 NwaCegarLoop]: 1044 mSDtfsCounter, 93 mSDsluCounter, 23925 mSDsCounter, 0 mSdLazyCounter, 2427 mSolverCounterSat, 86 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 93 SdHoareTripleChecker+Valid, 24969 SdHoareTripleChecker+Invalid, 2513 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 86 IncrementalHoareTripleChecker+Valid, 2427 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.0s IncrementalHoareTripleChecker+Time [2023-11-06 22:32:27,372 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [93 Valid, 24969 Invalid, 2513 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [86 Valid, 2427 Invalid, 0 Unknown, 0 Unchecked, 4.0s Time] [2023-11-06 22:32:27,375 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1301 states. [2023-11-06 22:32:27,397 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1301 to 1259. [2023-11-06 22:32:27,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1259 states, 827 states have (on average 1.7315598548972189) internal successors, (1432), 1252 states have internal predecessors, (1432), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2023-11-06 22:32:27,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1259 states to 1259 states and 1441 transitions. [2023-11-06 22:32:27,402 INFO L78 Accepts]: Start accepts. Automaton has 1259 states and 1441 transitions. Word has length 96 [2023-11-06 22:32:27,402 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:32:27,402 INFO L495 AbstractCegarLoop]: Abstraction has 1259 states and 1441 transitions. [2023-11-06 22:32:27,403 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 22:32:27,403 INFO L276 IsEmpty]: Start isEmpty. Operand 1259 states and 1441 transitions. [2023-11-06 22:32:27,404 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2023-11-06 22:32:27,404 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:32:27,404 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 22:32:27,421 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a46f760-6526-4a6e-8e5a-7fec075d7a49/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 22:32:27,620 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a46f760-6526-4a6e-8e5a-7fec075d7a49/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 22:32:27,621 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr80REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 631 more)] === [2023-11-06 22:32:27,621 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:32:27,621 INFO L85 PathProgramCache]: Analyzing trace with hash -750445210, now seen corresponding path program 5 times [2023-11-06 22:32:27,622 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-06 22:32:27,622 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [345135242] [2023-11-06 22:32:27,622 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-11-06 22:32:27,622 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 22:32:27,622 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a46f760-6526-4a6e-8e5a-7fec075d7a49/bin/uautomizer-verify-WvqO1wxjHP/mathsat [2023-11-06 22:32:27,623 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a46f760-6526-4a6e-8e5a-7fec075d7a49/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 22:32:27,627 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a46f760-6526-4a6e-8e5a-7fec075d7a49/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 (24)] Waiting until timeout for monitored process [2023-11-06 22:32:29,184 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 23 check-sat command(s) [2023-11-06 22:32:29,184 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-06 22:32:29,214 INFO L262 TraceCheckSpWp]: Trace formula consists of 816 conjuncts, 59 conjunts are in the unsatisfiable core [2023-11-06 22:32:29,223 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:32:29,232 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 22:32:29,379 INFO L322 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2023-11-06 22:32:29,380 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 22:32:29,411 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 22:32:29,536 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 22:32:30,782 INFO L322 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2023-11-06 22:32:30,782 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 22:32:30,834 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 22:32:30,877 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 22:32:30,877 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:32:33,423 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-06 22:32:33,423 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [345135242] [2023-11-06 22:32:33,424 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [345135242] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:32:33,424 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [517769851] [2023-11-06 22:32:33,424 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-11-06 22:32:33,424 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-11-06 22:32:33,424 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a46f760-6526-4a6e-8e5a-7fec075d7a49/bin/uautomizer-verify-WvqO1wxjHP/cvc4 [2023-11-06 22:32:33,426 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a46f760-6526-4a6e-8e5a-7fec075d7a49/bin/uautomizer-verify-WvqO1wxjHP/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-11-06 22:32:33,427 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a46f760-6526-4a6e-8e5a-7fec075d7a49/bin/uautomizer-verify-WvqO1wxjHP/cvc4 --incremental --print-success --lang smt (25)] Waiting until timeout for monitored process [2023-11-06 22:33:32,223 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 23 check-sat command(s) [2023-11-06 22:33:32,223 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-06 22:33:32,454 INFO L262 TraceCheckSpWp]: Trace formula consists of 816 conjuncts, 61 conjunts are in the unsatisfiable core [2023-11-06 22:33:32,465 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:33:32,471 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 22:33:32,670 INFO L322 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2023-11-06 22:33:32,670 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 22:33:32,704 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 22:33:32,778 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 22:33:34,002 INFO L322 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2023-11-06 22:33:34,003 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 22:33:34,054 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 22:33:34,067 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 22:33:34,067 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:33:34,548 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_2487 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (select |c_#valid| (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem36#1.base| v_ArrVal_2487) |c_ULTIMATE.start_main_~user~0#1.base|) (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (_ bv1 1)))) is different from false [2023-11-06 22:33:34,555 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [517769851] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:33:34,555 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-06 22:33:34,556 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 8 [2023-11-06 22:33:34,556 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [891534617] [2023-11-06 22:33:34,556 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-06 22:33:34,557 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-06 22:33:34,557 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-06 22:33:34,558 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-06 22:33:34,558 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=101, Unknown=3, NotChecked=20, Total=156 [2023-11-06 22:33:34,559 INFO L87 Difference]: Start difference. First operand 1259 states and 1441 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 22:33:42,942 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:33:42,942 INFO L93 Difference]: Finished difference Result 1655 states and 1953 transitions. [2023-11-06 22:33:42,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-06 22:33:42,944 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 22:33:42,944 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:33:42,947 INFO L225 Difference]: With dead ends: 1655 [2023-11-06 22:33:42,947 INFO L226 Difference]: Without dead ends: 1651 [2023-11-06 22:33:42,947 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 245 GetRequests, 228 SyntacticMatches, 3 SemanticMatches, 14 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=51, Invalid=160, Unknown=3, NotChecked=26, Total=240 [2023-11-06 22:33:42,948 INFO L413 NwaCegarLoop]: 658 mSDtfsCounter, 710 mSDsluCounter, 2560 mSDsCounter, 0 mSdLazyCounter, 2781 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 712 SdHoareTripleChecker+Valid, 3218 SdHoareTripleChecker+Invalid, 2786 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 2781 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.1s IncrementalHoareTripleChecker+Time [2023-11-06 22:33:42,948 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [712 Valid, 3218 Invalid, 2786 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 2781 Invalid, 0 Unknown, 0 Unchecked, 8.1s Time] [2023-11-06 22:33:42,951 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1651 states. [2023-11-06 22:33:42,967 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1651 to 1258. [2023-11-06 22:33:42,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1258 states, 827 states have (on average 1.7255139056831923) internal successors, (1427), 1251 states have internal predecessors, (1427), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2023-11-06 22:33:42,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1258 states to 1258 states and 1436 transitions. [2023-11-06 22:33:42,972 INFO L78 Accepts]: Start accepts. Automaton has 1258 states and 1436 transitions. Word has length 118 [2023-11-06 22:33:42,972 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:33:42,972 INFO L495 AbstractCegarLoop]: Abstraction has 1258 states and 1436 transitions. [2023-11-06 22:33:42,972 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 22:33:42,972 INFO L276 IsEmpty]: Start isEmpty. Operand 1258 states and 1436 transitions. [2023-11-06 22:33:42,974 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2023-11-06 22:33:42,974 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:33:42,974 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 22:33:43,012 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a46f760-6526-4a6e-8e5a-7fec075d7a49/bin/uautomizer-verify-WvqO1wxjHP/cvc4 --incremental --print-success --lang smt (25)] Forceful destruction successful, exit code 0 [2023-11-06 22:33:43,215 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a46f760-6526-4a6e-8e5a-7fec075d7a49/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 (24)] Forceful destruction successful, exit code 0 [2023-11-06 22:33:43,401 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a46f760-6526-4a6e-8e5a-7fec075d7a49/bin/uautomizer-verify-WvqO1wxjHP/cvc4 --incremental --print-success --lang smt,24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a46f760-6526-4a6e-8e5a-7fec075d7a49/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 22:33:43,402 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr81REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 631 more)] === [2023-11-06 22:33:43,402 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:33:43,402 INFO L85 PathProgramCache]: Analyzing trace with hash -750445209, now seen corresponding path program 1 times [2023-11-06 22:33:43,403 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-06 22:33:43,403 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1427094880] [2023-11-06 22:33:43,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:33:43,403 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 22:33:43,403 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a46f760-6526-4a6e-8e5a-7fec075d7a49/bin/uautomizer-verify-WvqO1wxjHP/mathsat [2023-11-06 22:33:43,404 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a46f760-6526-4a6e-8e5a-7fec075d7a49/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 22:33:43,406 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a46f760-6526-4a6e-8e5a-7fec075d7a49/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 (26)] Waiting until timeout for monitored process [2023-11-06 22:33:44,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:33:44,280 INFO L262 TraceCheckSpWp]: Trace formula consists of 816 conjuncts, 109 conjunts are in the unsatisfiable core [2023-11-06 22:33:44,308 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:33:44,312 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 22:33:44,536 INFO L322 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2023-11-06 22:33:44,536 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 22:33:44,545 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 6 treesize of output 5 [2023-11-06 22:33:44,578 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 22:33:44,590 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 22:33:44,741 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 22:33:44,748 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 22:33:45,729 INFO L322 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2023-11-06 22:33:45,730 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 22:33:45,762 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 22:33:45,819 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 22:33:45,829 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 22:33:45,863 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 22:33:45,863 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:33:47,650 WARN L839 $PredicateComparison]: unable to prove that (let ((.cse0 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (and (forall ((v_ArrVal_3040 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_3041 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem36#1.base| v_ArrVal_3041) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0) (_ bv20 32)) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem36#1.base| v_ArrVal_3040) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0)))) (forall ((v_ArrVal_3041 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse1 (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem36#1.base| v_ArrVal_3041) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0))) (bvule (bvadd (_ bv16 32) .cse1) (bvadd .cse1 (_ bv20 32))))))) is different from false [2023-11-06 22:33:47,660 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-06 22:33:47,660 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1427094880] [2023-11-06 22:33:47,660 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1427094880] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:33:47,660 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1095565927] [2023-11-06 22:33:47,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:33:47,660 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-11-06 22:33:47,660 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a46f760-6526-4a6e-8e5a-7fec075d7a49/bin/uautomizer-verify-WvqO1wxjHP/cvc4 [2023-11-06 22:33:47,664 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a46f760-6526-4a6e-8e5a-7fec075d7a49/bin/uautomizer-verify-WvqO1wxjHP/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-11-06 22:33:47,668 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a46f760-6526-4a6e-8e5a-7fec075d7a49/bin/uautomizer-verify-WvqO1wxjHP/cvc4 --incremental --print-success --lang smt (27)] Waiting until timeout for monitored process