./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memcleanup.prp --file ../../sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test2-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (memcleanup) Using default analysis Version 9bd2c7ff Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89af4b0d-483b-4e37-bf97-3f8e96705c98/bin/utaipan-verify-t7M7D8N6sZ/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89af4b0d-483b-4e37-bf97-3f8e96705c98/bin/utaipan-verify-t7M7D8N6sZ/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89af4b0d-483b-4e37-bf97-3f8e96705c98/bin/utaipan-verify-t7M7D8N6sZ/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89af4b0d-483b-4e37-bf97-3f8e96705c98/bin/utaipan-verify-t7M7D8N6sZ/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test2-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89af4b0d-483b-4e37-bf97-3f8e96705c98/bin/utaipan-verify-t7M7D8N6sZ/config/svcomp-MemCleanup-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89af4b0d-483b-4e37-bf97-3f8e96705c98/bin/utaipan-verify-t7M7D8N6sZ --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-memcleanup) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 69d24e9affd7540aafb8052ecd737d7732ca2a63c7e8e16adc4217413d1d99a5 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 05:02:53,117 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 05:02:53,221 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89af4b0d-483b-4e37-bf97-3f8e96705c98/bin/utaipan-verify-t7M7D8N6sZ/config/svcomp-MemCleanup-32bit-Taipan_Default.epf [2023-11-19 05:02:53,233 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 05:02:53,233 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 05:02:53,280 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 05:02:53,281 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 05:02:53,281 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 05:02:53,282 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 05:02:53,283 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 05:02:53,283 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-19 05:02:53,284 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-19 05:02:53,284 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-19 05:02:53,285 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-19 05:02:53,285 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-19 05:02:53,286 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-19 05:02:53,286 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-19 05:02:53,287 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-19 05:02:53,288 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-19 05:02:53,288 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-19 05:02:53,289 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-19 05:02:53,289 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-19 05:02:53,290 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-19 05:02:53,291 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-19 05:02:53,291 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 05:02:53,292 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-19 05:02:53,292 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-19 05:02:53,293 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 05:02:53,293 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-19 05:02:53,293 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 05:02:53,294 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-19 05:02:53,294 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-19 05:02:53,295 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-19 05:02:53,295 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 05:02:53,296 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-19 05:02:53,296 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-19 05:02:53,297 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-19 05:02:53,297 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-19 05:02:53,297 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-19 05:02:53,298 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 05:02:53,298 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 05:02:53,299 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 05:02:53,300 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 05:02:53,300 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 05:02:53,301 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 05:02:53,301 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-19 05:02:53,301 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 05:02:53,302 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-19 05:02:53,302 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 05:02:53,302 INFO L153 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES 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_89af4b0d-483b-4e37-bf97-3f8e96705c98/bin/utaipan-verify-t7M7D8N6sZ/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89af4b0d-483b-4e37-bf97-3f8e96705c98/bin/utaipan-verify-t7M7D8N6sZ Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-memcleanup) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 69d24e9affd7540aafb8052ecd737d7732ca2a63c7e8e16adc4217413d1d99a5 [2023-11-19 05:02:53,589 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 05:02:53,615 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 05:02:53,617 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 05:02:53,619 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 05:02:53,620 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 05:02:53,621 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89af4b0d-483b-4e37-bf97-3f8e96705c98/bin/utaipan-verify-t7M7D8N6sZ/../../sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test2-1.i [2023-11-19 05:02:56,792 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 05:02:57,211 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 05:02:57,212 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89af4b0d-483b-4e37-bf97-3f8e96705c98/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test2-1.i [2023-11-19 05:02:57,231 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89af4b0d-483b-4e37-bf97-3f8e96705c98/bin/utaipan-verify-t7M7D8N6sZ/data/943be79c9/309234c774d744bea081017d45f24d09/FLAGf38059fc3 [2023-11-19 05:02:57,248 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89af4b0d-483b-4e37-bf97-3f8e96705c98/bin/utaipan-verify-t7M7D8N6sZ/data/943be79c9/309234c774d744bea081017d45f24d09 [2023-11-19 05:02:57,251 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 05:02:57,252 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 05:02:57,254 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 05:02:57,254 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 05:02:57,260 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 05:02:57,261 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 05:02:57" (1/1) ... [2023-11-19 05:02:57,263 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3ff861bc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:02:57, skipping insertion in model container [2023-11-19 05:02:57,263 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 05:02:57" (1/1) ... [2023-11-19 05:02:57,346 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 05:02:58,029 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 05:02:58,054 ERROR L324 MainTranslator]: Unsupported Syntax: Found a cast between two array/pointer types of different sizes while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) [2023-11-19 05:02:58,055 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@3a7b6c66 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:02:58, skipping insertion in model container [2023-11-19 05:02:58,055 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 05:02:58,055 INFO L186 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2023-11-19 05:02:58,057 INFO L158 Benchmark]: Toolchain (without parser) took 804.05ms. Allocated memory is still 155.2MB. Free memory was 107.2MB in the beginning and 87.7MB in the end (delta: 19.4MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2023-11-19 05:02:58,058 INFO L158 Benchmark]: CDTParser took 0.32ms. Allocated memory is still 155.2MB. Free memory is still 98.8MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-19 05:02:58,059 INFO L158 Benchmark]: CACSL2BoogieTranslator took 801.28ms. Allocated memory is still 155.2MB. Free memory was 107.0MB in the beginning and 87.7MB in the end (delta: 19.3MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2023-11-19 05:02:58,060 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 155.2MB. Free memory is still 98.8MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 801.28ms. Allocated memory is still 155.2MB. Free memory was 107.0MB in the beginning and 87.7MB in the end (delta: 19.3MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 815]: Unsupported Syntax Found a cast between two array/pointer types of different sizes while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89af4b0d-483b-4e37-bf97-3f8e96705c98/bin/utaipan-verify-t7M7D8N6sZ/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89af4b0d-483b-4e37-bf97-3f8e96705c98/bin/utaipan-verify-t7M7D8N6sZ/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89af4b0d-483b-4e37-bf97-3f8e96705c98/bin/utaipan-verify-t7M7D8N6sZ/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89af4b0d-483b-4e37-bf97-3f8e96705c98/bin/utaipan-verify-t7M7D8N6sZ/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test2-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89af4b0d-483b-4e37-bf97-3f8e96705c98/bin/utaipan-verify-t7M7D8N6sZ/config/svcomp-MemCleanup-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89af4b0d-483b-4e37-bf97-3f8e96705c98/bin/utaipan-verify-t7M7D8N6sZ --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-memcleanup) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 69d24e9affd7540aafb8052ecd737d7732ca2a63c7e8e16adc4217413d1d99a5 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 05:03:00,660 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 05:03:00,808 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89af4b0d-483b-4e37-bf97-3f8e96705c98/bin/utaipan-verify-t7M7D8N6sZ/config/svcomp-MemCleanup-32bit-Taipan_Bitvector.epf [2023-11-19 05:03:00,818 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 05:03:00,819 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 05:03:00,865 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 05:03:00,866 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 05:03:00,867 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 05:03:00,868 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 05:03:00,873 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 05:03:00,873 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-19 05:03:00,874 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-19 05:03:00,874 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-19 05:03:00,876 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-19 05:03:00,876 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-19 05:03:00,877 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-19 05:03:00,877 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-19 05:03:00,878 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-19 05:03:00,879 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 05:03:00,879 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-19 05:03:00,880 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-19 05:03:00,880 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 05:03:00,881 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-19 05:03:00,881 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 05:03:00,881 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-19 05:03:00,882 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-19 05:03:00,882 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-19 05:03:00,882 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 05:03:00,883 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-19 05:03:00,883 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-19 05:03:00,885 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-11-19 05:03:00,885 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-11-19 05:03:00,885 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-19 05:03:00,885 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-19 05:03:00,886 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-19 05:03:00,886 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 05:03:00,887 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 05:03:00,887 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-19 05:03:00,887 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 05:03:00,888 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 05:03:00,888 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 05:03:00,888 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 05:03:00,888 INFO L153 SettingsManager]: * Trace refinement strategy=WALRUS [2023-11-19 05:03:00,889 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-11-19 05:03:00,889 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-19 05:03:00,889 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 05:03:00,890 INFO L153 SettingsManager]: * Logic for external solver=AUFBV 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_89af4b0d-483b-4e37-bf97-3f8e96705c98/bin/utaipan-verify-t7M7D8N6sZ/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89af4b0d-483b-4e37-bf97-3f8e96705c98/bin/utaipan-verify-t7M7D8N6sZ Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-memcleanup) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 69d24e9affd7540aafb8052ecd737d7732ca2a63c7e8e16adc4217413d1d99a5 [2023-11-19 05:03:01,360 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 05:03:01,397 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 05:03:01,400 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 05:03:01,402 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 05:03:01,403 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 05:03:01,405 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89af4b0d-483b-4e37-bf97-3f8e96705c98/bin/utaipan-verify-t7M7D8N6sZ/../../sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test2-1.i [2023-11-19 05:03:04,877 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 05:03:05,265 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 05:03:05,266 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89af4b0d-483b-4e37-bf97-3f8e96705c98/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test2-1.i [2023-11-19 05:03:05,303 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89af4b0d-483b-4e37-bf97-3f8e96705c98/bin/utaipan-verify-t7M7D8N6sZ/data/39175af94/67129519f3904ec28906b4dcaa23270b/FLAG1e9c0089f [2023-11-19 05:03:05,324 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89af4b0d-483b-4e37-bf97-3f8e96705c98/bin/utaipan-verify-t7M7D8N6sZ/data/39175af94/67129519f3904ec28906b4dcaa23270b [2023-11-19 05:03:05,330 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 05:03:05,331 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 05:03:05,334 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 05:03:05,335 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 05:03:05,340 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 05:03:05,341 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 05:03:05" (1/1) ... [2023-11-19 05:03:05,342 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@50c3789 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:03:05, skipping insertion in model container [2023-11-19 05:03:05,342 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 05:03:05" (1/1) ... [2023-11-19 05:03:05,416 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 05:03:06,147 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 05:03:06,162 INFO L199 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2023-11-19 05:03:06,177 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 05:03:06,285 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 05:03:06,290 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 05:03:06,400 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 05:03:06,463 WARN L675 CHandler]: The function memcmp is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 05:03:06,471 INFO L206 MainTranslator]: Completed translation [2023-11-19 05:03:06,472 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:03:06 WrapperNode [2023-11-19 05:03:06,472 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 05:03:06,473 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 05:03:06,473 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 05:03:06,474 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 05:03:06,481 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:03:06" (1/1) ... [2023-11-19 05:03:06,546 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:03:06" (1/1) ... [2023-11-19 05:03:06,629 INFO L138 Inliner]: procedures = 211, calls = 237, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 887 [2023-11-19 05:03:06,631 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 05:03:06,632 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 05:03:06,632 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 05:03:06,633 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 05:03:06,643 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:03:06" (1/1) ... [2023-11-19 05:03:06,643 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:03:06" (1/1) ... [2023-11-19 05:03:06,670 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:03:06" (1/1) ... [2023-11-19 05:03:06,672 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:03:06" (1/1) ... [2023-11-19 05:03:06,741 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:03:06" (1/1) ... [2023-11-19 05:03:06,767 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:03:06" (1/1) ... [2023-11-19 05:03:06,774 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:03:06" (1/1) ... [2023-11-19 05:03:06,780 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:03:06" (1/1) ... [2023-11-19 05:03:06,798 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 05:03:06,799 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 05:03:06,811 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 05:03:06,812 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 05:03:06,812 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:03:06" (1/1) ... [2023-11-19 05:03:06,819 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 05:03:06,836 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89af4b0d-483b-4e37-bf97-3f8e96705c98/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 05:03:06,861 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89af4b0d-483b-4e37-bf97-3f8e96705c98/bin/utaipan-verify-t7M7D8N6sZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 05:03:06,884 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89af4b0d-483b-4e37-bf97-3f8e96705c98/bin/utaipan-verify-t7M7D8N6sZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 05:03:06,925 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-11-19 05:03:06,926 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-11-19 05:03:06,926 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2023-11-19 05:03:06,926 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2023-11-19 05:03:06,927 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2023-11-19 05:03:06,928 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2023-11-19 05:03:06,929 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-19 05:03:06,929 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2023-11-19 05:03:06,930 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-19 05:03:06,930 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-19 05:03:06,930 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2023-11-19 05:03:06,930 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2023-11-19 05:03:06,930 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-11-19 05:03:06,931 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-11-19 05:03:06,931 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-19 05:03:06,932 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 05:03:06,932 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-19 05:03:06,933 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 05:03:06,933 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 05:03:07,179 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 05:03:07,183 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 05:03:13,442 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 05:03:13,462 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 05:03:13,462 INFO L302 CfgBuilder]: Removed 54 assume(true) statements. [2023-11-19 05:03:13,469 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 05:03:13 BoogieIcfgContainer [2023-11-19 05:03:13,469 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 05:03:13,472 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 05:03:13,472 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 05:03:13,476 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 05:03:13,476 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 05:03:05" (1/3) ... [2023-11-19 05:03:13,477 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@19f8ba9c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 05:03:13, skipping insertion in model container [2023-11-19 05:03:13,478 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:03:06" (2/3) ... [2023-11-19 05:03:13,480 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@19f8ba9c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 05:03:13, skipping insertion in model container [2023-11-19 05:03:13,480 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 05:03:13" (3/3) ... [2023-11-19 05:03:13,482 INFO L112 eAbstractionObserver]: Analyzing ICFG uthash_SFH_test2-1.i [2023-11-19 05:03:13,503 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 05:03:13,503 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-11-19 05:03:13,585 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 05:03:13,592 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=FINITE_AUTOMATA, 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;@5df98b06, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-19 05:03:13,593 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-11-19 05:03:13,606 INFO L276 IsEmpty]: Start isEmpty. Operand has 186 states, 170 states have (on average 1.6647058823529413) internal successors, (283), 179 states have internal predecessors, (283), 10 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (10), 6 states have call predecessors, (10), 10 states have call successors, (10) [2023-11-19 05:03:13,615 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2023-11-19 05:03:13,615 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:03:13,617 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-19 05:03:13,618 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2023-11-19 05:03:13,625 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:03:13,626 INFO L85 PathProgramCache]: Analyzing trace with hash 567009983, now seen corresponding path program 1 times [2023-11-19 05:03:13,647 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-19 05:03:13,648 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1999866941] [2023-11-19 05:03:13,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:03:13,649 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-19 05:03:13,649 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89af4b0d-483b-4e37-bf97-3f8e96705c98/bin/utaipan-verify-t7M7D8N6sZ/mathsat [2023-11-19 05:03:13,653 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89af4b0d-483b-4e37-bf97-3f8e96705c98/bin/utaipan-verify-t7M7D8N6sZ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-19 05:03:13,660 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89af4b0d-483b-4e37-bf97-3f8e96705c98/bin/utaipan-verify-t7M7D8N6sZ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2023-11-19 05:03:13,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:03:13,912 INFO L262 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 1 conjunts are in the unsatisfiable core [2023-11-19 05:03:13,919 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 05:03:13,942 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:03:13,943 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 05:03:13,944 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-19 05:03:13,944 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1999866941] [2023-11-19 05:03:13,945 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1999866941] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:03:13,946 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:03:13,946 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 05:03:13,948 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [990207698] [2023-11-19 05:03:13,949 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:03:13,954 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-19 05:03:13,955 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-19 05:03:13,996 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-19 05:03:13,997 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-19 05:03:14,001 INFO L87 Difference]: Start difference. First operand has 186 states, 170 states have (on average 1.6647058823529413) internal successors, (283), 179 states have internal predecessors, (283), 10 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (10), 6 states have call predecessors, (10), 10 states have call successors, (10) Second operand has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 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) [2023-11-19 05:03:14,037 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:03:14,038 INFO L93 Difference]: Finished difference Result 184 states and 240 transitions. [2023-11-19 05:03:14,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-19 05:03:14,040 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 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 [2023-11-19 05:03:14,041 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:03:14,052 INFO L225 Difference]: With dead ends: 184 [2023-11-19 05:03:14,053 INFO L226 Difference]: Without dead ends: 182 [2023-11-19 05:03:14,055 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-19 05:03:14,059 INFO L413 NwaCegarLoop]: 240 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 240 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 05:03:14,060 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 240 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 05:03:14,080 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182 states. [2023-11-19 05:03:14,108 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182 to 182. [2023-11-19 05:03:14,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 182 states, 168 states have (on average 1.3095238095238095) internal successors, (220), 175 states have internal predecessors, (220), 10 states have call successors, (10), 3 states have call predecessors, (10), 2 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) [2023-11-19 05:03:14,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182 states to 182 states and 238 transitions. [2023-11-19 05:03:14,116 INFO L78 Accepts]: Start accepts. Automaton has 182 states and 238 transitions. Word has length 7 [2023-11-19 05:03:14,116 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:03:14,116 INFO L495 AbstractCegarLoop]: Abstraction has 182 states and 238 transitions. [2023-11-19 05:03:14,117 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 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) [2023-11-19 05:03:14,117 INFO L276 IsEmpty]: Start isEmpty. Operand 182 states and 238 transitions. [2023-11-19 05:03:14,117 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2023-11-19 05:03:14,118 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:03:14,118 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 05:03:14,131 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89af4b0d-483b-4e37-bf97-3f8e96705c98/bin/utaipan-verify-t7M7D8N6sZ/mathsat -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 [2023-11-19 05:03:14,321 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89af4b0d-483b-4e37-bf97-3f8e96705c98/bin/utaipan-verify-t7M7D8N6sZ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-19 05:03:14,321 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2023-11-19 05:03:14,322 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:03:14,322 INFO L85 PathProgramCache]: Analyzing trace with hash -2048480633, now seen corresponding path program 1 times [2023-11-19 05:03:14,323 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-19 05:03:14,323 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [547138989] [2023-11-19 05:03:14,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:03:14,323 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-19 05:03:14,324 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89af4b0d-483b-4e37-bf97-3f8e96705c98/bin/utaipan-verify-t7M7D8N6sZ/mathsat [2023-11-19 05:03:14,325 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89af4b0d-483b-4e37-bf97-3f8e96705c98/bin/utaipan-verify-t7M7D8N6sZ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-19 05:03:14,351 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89af4b0d-483b-4e37-bf97-3f8e96705c98/bin/utaipan-verify-t7M7D8N6sZ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2023-11-19 05:03:14,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:03:14,561 INFO L262 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-19 05:03:14,565 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 05:03:14,626 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-19 05:03:14,628 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-19 05:03:14,628 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-19 05:03:14,639 INFO L378 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 [2023-11-19 05:03:14,730 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-19 05:03:14,731 INFO L378 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 [2023-11-19 05:03:14,754 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:03:14,754 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 05:03:14,755 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-19 05:03:14,759 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [547138989] [2023-11-19 05:03:14,760 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [547138989] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:03:14,761 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:03:14,761 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 05:03:14,761 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1228492802] [2023-11-19 05:03:14,762 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:03:14,763 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 05:03:14,763 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-19 05:03:14,766 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 05:03:14,767 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-19 05:03:14,767 INFO L87 Difference]: Start difference. First operand 182 states and 238 transitions. Second operand has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 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) [2023-11-19 05:03:16,379 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.28s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-19 05:03:20,911 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-19 05:03:23,297 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.17s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-19 05:03:23,582 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:03:23,582 INFO L93 Difference]: Finished difference Result 297 states and 396 transitions. [2023-11-19 05:03:23,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 05:03:23,585 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 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 9 [2023-11-19 05:03:23,585 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:03:23,588 INFO L225 Difference]: With dead ends: 297 [2023-11-19 05:03:23,588 INFO L226 Difference]: Without dead ends: 297 [2023-11-19 05:03:23,588 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-19 05:03:23,590 INFO L413 NwaCegarLoop]: 203 mSDtfsCounter, 143 mSDsluCounter, 365 mSDsCounter, 0 mSdLazyCounter, 149 mSolverCounterSat, 2 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 148 SdHoareTripleChecker+Valid, 568 SdHoareTripleChecker+Invalid, 152 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 149 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.7s IncrementalHoareTripleChecker+Time [2023-11-19 05:03:23,590 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [148 Valid, 568 Invalid, 152 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 149 Invalid, 1 Unknown, 0 Unchecked, 8.7s Time] [2023-11-19 05:03:23,592 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 297 states. [2023-11-19 05:03:23,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 297 to 184. [2023-11-19 05:03:23,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 184 states, 170 states have (on average 1.3058823529411765) internal successors, (222), 177 states have internal predecessors, (222), 10 states have call successors, (10), 3 states have call predecessors, (10), 2 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) [2023-11-19 05:03:23,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 184 states to 184 states and 240 transitions. [2023-11-19 05:03:23,620 INFO L78 Accepts]: Start accepts. Automaton has 184 states and 240 transitions. Word has length 9 [2023-11-19 05:03:23,620 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:03:23,620 INFO L495 AbstractCegarLoop]: Abstraction has 184 states and 240 transitions. [2023-11-19 05:03:23,621 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 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) [2023-11-19 05:03:23,621 INFO L276 IsEmpty]: Start isEmpty. Operand 184 states and 240 transitions. [2023-11-19 05:03:23,623 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2023-11-19 05:03:23,624 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:03:23,624 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 05:03:23,634 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89af4b0d-483b-4e37-bf97-3f8e96705c98/bin/utaipan-verify-t7M7D8N6sZ/mathsat -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 [2023-11-19 05:03:23,827 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89af4b0d-483b-4e37-bf97-3f8e96705c98/bin/utaipan-verify-t7M7D8N6sZ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-19 05:03:23,828 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2023-11-19 05:03:23,828 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:03:23,829 INFO L85 PathProgramCache]: Analyzing trace with hash -492285767, now seen corresponding path program 1 times [2023-11-19 05:03:23,830 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-19 05:03:23,830 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [747502192] [2023-11-19 05:03:23,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:03:23,831 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-19 05:03:23,831 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89af4b0d-483b-4e37-bf97-3f8e96705c98/bin/utaipan-verify-t7M7D8N6sZ/mathsat [2023-11-19 05:03:23,832 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89af4b0d-483b-4e37-bf97-3f8e96705c98/bin/utaipan-verify-t7M7D8N6sZ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-19 05:03:23,834 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89af4b0d-483b-4e37-bf97-3f8e96705c98/bin/utaipan-verify-t7M7D8N6sZ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2023-11-19 05:03:24,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:03:24,275 INFO L262 TraceCheckSpWp]: Trace formula consists of 351 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-19 05:03:24,280 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 05:03:24,331 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:03:24,332 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 05:03:24,332 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-19 05:03:24,332 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [747502192] [2023-11-19 05:03:24,332 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [747502192] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:03:24,333 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:03:24,333 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 05:03:24,333 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [993461259] [2023-11-19 05:03:24,333 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:03:24,334 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 05:03:24,335 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-19 05:03:24,335 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 05:03:24,336 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-19 05:03:24,336 INFO L87 Difference]: Start difference. First operand 184 states and 240 transitions. Second operand has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 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) [2023-11-19 05:03:24,519 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:03:24,519 INFO L93 Difference]: Finished difference Result 188 states and 236 transitions. [2023-11-19 05:03:24,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 05:03:24,520 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 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 65 [2023-11-19 05:03:24,521 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:03:24,523 INFO L225 Difference]: With dead ends: 188 [2023-11-19 05:03:24,523 INFO L226 Difference]: Without dead ends: 188 [2023-11-19 05:03:24,524 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-19 05:03:24,527 INFO L413 NwaCegarLoop]: 209 mSDtfsCounter, 36 mSDsluCounter, 392 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 601 SdHoareTripleChecker+Invalid, 62 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-19 05:03:24,530 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 601 Invalid, 62 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-19 05:03:24,534 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 188 states. [2023-11-19 05:03:24,548 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 188 to 187. [2023-11-19 05:03:24,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 187 states, 173 states have (on average 1.254335260115607) internal successors, (217), 180 states have internal predecessors, (217), 10 states have call successors, (10), 3 states have call predecessors, (10), 2 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) [2023-11-19 05:03:24,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 187 states to 187 states and 235 transitions. [2023-11-19 05:03:24,551 INFO L78 Accepts]: Start accepts. Automaton has 187 states and 235 transitions. Word has length 65 [2023-11-19 05:03:24,551 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:03:24,551 INFO L495 AbstractCegarLoop]: Abstraction has 187 states and 235 transitions. [2023-11-19 05:03:24,552 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 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) [2023-11-19 05:03:24,552 INFO L276 IsEmpty]: Start isEmpty. Operand 187 states and 235 transitions. [2023-11-19 05:03:24,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2023-11-19 05:03:24,555 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:03:24,555 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 05:03:24,570 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89af4b0d-483b-4e37-bf97-3f8e96705c98/bin/utaipan-verify-t7M7D8N6sZ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2023-11-19 05:03:24,765 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89af4b0d-483b-4e37-bf97-3f8e96705c98/bin/utaipan-verify-t7M7D8N6sZ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-19 05:03:24,765 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2023-11-19 05:03:24,766 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:03:24,766 INFO L85 PathProgramCache]: Analyzing trace with hash 1261606957, now seen corresponding path program 1 times [2023-11-19 05:03:24,767 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-19 05:03:24,767 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1574748442] [2023-11-19 05:03:24,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:03:24,768 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-19 05:03:24,768 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89af4b0d-483b-4e37-bf97-3f8e96705c98/bin/utaipan-verify-t7M7D8N6sZ/mathsat [2023-11-19 05:03:24,769 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89af4b0d-483b-4e37-bf97-3f8e96705c98/bin/utaipan-verify-t7M7D8N6sZ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-19 05:03:24,776 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89af4b0d-483b-4e37-bf97-3f8e96705c98/bin/utaipan-verify-t7M7D8N6sZ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2023-11-19 05:03:25,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:03:25,235 INFO L262 TraceCheckSpWp]: Trace formula consists of 345 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-19 05:03:25,239 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 05:03:25,722 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:03:25,722 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 05:03:25,722 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-19 05:03:25,722 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1574748442] [2023-11-19 05:03:25,722 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1574748442] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:03:25,723 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:03:25,723 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 05:03:25,723 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [487927773] [2023-11-19 05:03:25,723 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:03:25,724 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 05:03:25,724 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-19 05:03:25,725 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 05:03:25,725 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 05:03:25,725 INFO L87 Difference]: Start difference. First operand 187 states and 235 transitions. Second operand has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 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) [2023-11-19 05:03:26,483 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:03:26,483 INFO L93 Difference]: Finished difference Result 289 states and 364 transitions. [2023-11-19 05:03:26,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 05:03:26,486 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 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 65 [2023-11-19 05:03:26,486 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:03:26,488 INFO L225 Difference]: With dead ends: 289 [2023-11-19 05:03:26,488 INFO L226 Difference]: Without dead ends: 289 [2023-11-19 05:03:26,489 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 05:03:26,492 INFO L413 NwaCegarLoop]: 282 mSDtfsCounter, 82 mSDsluCounter, 205 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 89 SdHoareTripleChecker+Valid, 487 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-11-19 05:03:26,494 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [89 Valid, 487 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-11-19 05:03:26,496 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 289 states. [2023-11-19 05:03:26,518 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 289 to 285. [2023-11-19 05:03:26,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 285 states, 266 states have (on average 1.2518796992481203) internal successors, (333), 278 states have internal predecessors, (333), 15 states have call successors, (15), 3 states have call predecessors, (15), 2 states have return successors, (13), 5 states have call predecessors, (13), 13 states have call successors, (13) [2023-11-19 05:03:26,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 285 states to 285 states and 361 transitions. [2023-11-19 05:03:26,521 INFO L78 Accepts]: Start accepts. Automaton has 285 states and 361 transitions. Word has length 65 [2023-11-19 05:03:26,522 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:03:26,522 INFO L495 AbstractCegarLoop]: Abstraction has 285 states and 361 transitions. [2023-11-19 05:03:26,522 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 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) [2023-11-19 05:03:26,523 INFO L276 IsEmpty]: Start isEmpty. Operand 285 states and 361 transitions. [2023-11-19 05:03:26,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2023-11-19 05:03:26,526 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:03:26,526 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 05:03:26,534 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89af4b0d-483b-4e37-bf97-3f8e96705c98/bin/utaipan-verify-t7M7D8N6sZ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2023-11-19 05:03:26,734 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89af4b0d-483b-4e37-bf97-3f8e96705c98/bin/utaipan-verify-t7M7D8N6sZ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-19 05:03:26,734 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2023-11-19 05:03:26,735 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:03:26,735 INFO L85 PathProgramCache]: Analyzing trace with hash 1450509490, now seen corresponding path program 1 times [2023-11-19 05:03:26,736 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-19 05:03:26,736 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [807018823] [2023-11-19 05:03:26,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:03:26,736 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-19 05:03:26,737 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89af4b0d-483b-4e37-bf97-3f8e96705c98/bin/utaipan-verify-t7M7D8N6sZ/mathsat [2023-11-19 05:03:26,738 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89af4b0d-483b-4e37-bf97-3f8e96705c98/bin/utaipan-verify-t7M7D8N6sZ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-19 05:03:26,739 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89af4b0d-483b-4e37-bf97-3f8e96705c98/bin/utaipan-verify-t7M7D8N6sZ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2023-11-19 05:03:27,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:03:27,322 INFO L262 TraceCheckSpWp]: Trace formula consists of 476 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-19 05:03:27,326 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 05:03:27,382 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:03:27,382 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 05:03:27,382 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-19 05:03:27,382 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [807018823] [2023-11-19 05:03:27,382 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [807018823] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:03:27,383 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:03:27,383 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 05:03:27,383 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [808024582] [2023-11-19 05:03:27,383 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:03:27,384 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 05:03:27,384 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-19 05:03:27,385 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 05:03:27,385 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-19 05:03:27,386 INFO L87 Difference]: Start difference. First operand 285 states and 361 transitions. Second operand has 4 states, 4 states have (on average 19.0) internal successors, (76), 4 states have internal predecessors, (76), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-19 05:03:27,448 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:03:27,448 INFO L93 Difference]: Finished difference Result 288 states and 365 transitions. [2023-11-19 05:03:27,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 05:03:27,449 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.0) internal successors, (76), 4 states have internal predecessors, (76), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) Word has length 80 [2023-11-19 05:03:27,450 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:03:27,470 INFO L225 Difference]: With dead ends: 288 [2023-11-19 05:03:27,470 INFO L226 Difference]: Without dead ends: 288 [2023-11-19 05:03:27,471 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 77 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-19 05:03:27,472 INFO L413 NwaCegarLoop]: 224 mSDtfsCounter, 2 mSDsluCounter, 444 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 668 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 05:03:27,472 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 668 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 05:03:27,473 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 288 states. [2023-11-19 05:03:27,483 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 288 to 288. [2023-11-19 05:03:27,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 288 states, 268 states have (on average 1.2537313432835822) internal successors, (336), 281 states have internal predecessors, (336), 15 states have call successors, (15), 3 states have call predecessors, (15), 3 states have return successors, (14), 5 states have call predecessors, (14), 13 states have call successors, (14) [2023-11-19 05:03:27,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 288 states to 288 states and 365 transitions. [2023-11-19 05:03:27,486 INFO L78 Accepts]: Start accepts. Automaton has 288 states and 365 transitions. Word has length 80 [2023-11-19 05:03:27,487 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:03:27,487 INFO L495 AbstractCegarLoop]: Abstraction has 288 states and 365 transitions. [2023-11-19 05:03:27,487 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.0) internal successors, (76), 4 states have internal predecessors, (76), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-19 05:03:27,487 INFO L276 IsEmpty]: Start isEmpty. Operand 288 states and 365 transitions. [2023-11-19 05:03:27,490 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2023-11-19 05:03:27,491 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:03:27,491 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 05:03:27,501 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89af4b0d-483b-4e37-bf97-3f8e96705c98/bin/utaipan-verify-t7M7D8N6sZ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Ended with exit code 0 [2023-11-19 05:03:27,700 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89af4b0d-483b-4e37-bf97-3f8e96705c98/bin/utaipan-verify-t7M7D8N6sZ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-19 05:03:27,700 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2023-11-19 05:03:27,701 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:03:27,701 INFO L85 PathProgramCache]: Analyzing trace with hash -1714105296, now seen corresponding path program 1 times [2023-11-19 05:03:27,701 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-19 05:03:27,702 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1443843818] [2023-11-19 05:03:27,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:03:27,702 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-19 05:03:27,702 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89af4b0d-483b-4e37-bf97-3f8e96705c98/bin/utaipan-verify-t7M7D8N6sZ/mathsat [2023-11-19 05:03:27,704 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89af4b0d-483b-4e37-bf97-3f8e96705c98/bin/utaipan-verify-t7M7D8N6sZ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-19 05:03:27,706 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89af4b0d-483b-4e37-bf97-3f8e96705c98/bin/utaipan-verify-t7M7D8N6sZ/mathsat -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 [2023-11-19 05:03:28,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:03:28,277 INFO L262 TraceCheckSpWp]: Trace formula consists of 498 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-19 05:03:28,280 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 05:03:28,334 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 9 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-19 05:03:28,335 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 05:03:28,456 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-19 05:03:28,456 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-19 05:03:28,456 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1443843818] [2023-11-19 05:03:28,456 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1443843818] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 05:03:28,457 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [380878353] [2023-11-19 05:03:28,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:03:28,457 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-11-19 05:03:28,457 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89af4b0d-483b-4e37-bf97-3f8e96705c98/bin/utaipan-verify-t7M7D8N6sZ/cvc4 [2023-11-19 05:03:28,461 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89af4b0d-483b-4e37-bf97-3f8e96705c98/bin/utaipan-verify-t7M7D8N6sZ/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-11-19 05:03:28,464 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89af4b0d-483b-4e37-bf97-3f8e96705c98/bin/utaipan-verify-t7M7D8N6sZ/cvc4 --incremental --print-success --lang smt (8)] Waiting until timeout for monitored process [2023-11-19 05:03:29,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:03:29,328 INFO L262 TraceCheckSpWp]: Trace formula consists of 498 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-19 05:03:29,331 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 05:03:29,357 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 9 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-19 05:03:29,358 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 05:03:29,419 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-19 05:03:29,419 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [380878353] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 05:03:29,420 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1378191023] [2023-11-19 05:03:29,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:03:29,420 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 05:03:29,420 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89af4b0d-483b-4e37-bf97-3f8e96705c98/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 05:03:29,422 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89af4b0d-483b-4e37-bf97-3f8e96705c98/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 05:03:29,447 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89af4b0d-483b-4e37-bf97-3f8e96705c98/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-19 05:03:29,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:03:29,991 INFO L262 TraceCheckSpWp]: Trace formula consists of 498 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-19 05:03:29,994 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 05:03:30,018 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-19 05:03:30,018 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 05:03:30,187 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-19 05:03:30,187 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1378191023] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 05:03:30,188 INFO L185 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2023-11-19 05:03:30,188 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5, 5, 5, 5] total 11 [2023-11-19 05:03:30,188 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [9965631] [2023-11-19 05:03:30,188 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2023-11-19 05:03:30,190 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-19 05:03:30,190 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-19 05:03:30,191 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-19 05:03:30,191 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2023-11-19 05:03:30,192 INFO L87 Difference]: Start difference. First operand 288 states and 365 transitions. Second operand has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 2 states have call successors, (4), 2 states have call predecessors, (4), 5 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-11-19 05:03:30,782 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:03:30,782 INFO L93 Difference]: Finished difference Result 303 states and 387 transitions. [2023-11-19 05:03:30,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-19 05:03:30,783 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 2 states have call successors, (4), 2 states have call predecessors, (4), 5 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 82 [2023-11-19 05:03:30,784 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:03:30,786 INFO L225 Difference]: With dead ends: 303 [2023-11-19 05:03:30,786 INFO L226 Difference]: Without dead ends: 303 [2023-11-19 05:03:30,787 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 497 GetRequests, 477 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=156, Invalid=306, Unknown=0, NotChecked=0, Total=462 [2023-11-19 05:03:30,788 INFO L413 NwaCegarLoop]: 224 mSDtfsCounter, 19 mSDsluCounter, 879 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 1103 SdHoareTripleChecker+Invalid, 79 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 65 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-19 05:03:30,788 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 1103 Invalid, 79 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 65 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-19 05:03:30,790 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 303 states. [2023-11-19 05:03:30,799 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 303 to 299. [2023-11-19 05:03:30,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 299 states, 278 states have (on average 1.2733812949640289) internal successors, (354), 291 states have internal predecessors, (354), 15 states have call successors, (15), 4 states have call predecessors, (15), 4 states have return successors, (14), 5 states have call predecessors, (14), 13 states have call successors, (14) [2023-11-19 05:03:30,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 299 states to 299 states and 383 transitions. [2023-11-19 05:03:30,803 INFO L78 Accepts]: Start accepts. Automaton has 299 states and 383 transitions. Word has length 82 [2023-11-19 05:03:30,804 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:03:30,804 INFO L495 AbstractCegarLoop]: Abstraction has 299 states and 383 transitions. [2023-11-19 05:03:30,804 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 2 states have call successors, (4), 2 states have call predecessors, (4), 5 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-11-19 05:03:30,804 INFO L276 IsEmpty]: Start isEmpty. Operand 299 states and 383 transitions. [2023-11-19 05:03:30,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2023-11-19 05:03:30,806 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:03:30,806 INFO L195 NwaCegarLoop]: trace histogram [8, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 05:03:30,819 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89af4b0d-483b-4e37-bf97-3f8e96705c98/bin/utaipan-verify-t7M7D8N6sZ/mathsat -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 [2023-11-19 05:03:31,037 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89af4b0d-483b-4e37-bf97-3f8e96705c98/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-11-19 05:03:31,224 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89af4b0d-483b-4e37-bf97-3f8e96705c98/bin/utaipan-verify-t7M7D8N6sZ/cvc4 --incremental --print-success --lang smt (8)] Forceful destruction successful, exit code 0 [2023-11-19 05:03:31,419 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89af4b0d-483b-4e37-bf97-3f8e96705c98/bin/utaipan-verify-t7M7D8N6sZ/mathsat -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 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89af4b0d-483b-4e37-bf97-3f8e96705c98/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89af4b0d-483b-4e37-bf97-3f8e96705c98/bin/utaipan-verify-t7M7D8N6sZ/cvc4 --incremental --print-success --lang smt [2023-11-19 05:03:31,419 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2023-11-19 05:03:31,420 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:03:31,420 INFO L85 PathProgramCache]: Analyzing trace with hash -1155608654, now seen corresponding path program 2 times [2023-11-19 05:03:31,420 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-19 05:03:31,420 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [222243931] [2023-11-19 05:03:31,420 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-19 05:03:31,421 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-19 05:03:31,421 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89af4b0d-483b-4e37-bf97-3f8e96705c98/bin/utaipan-verify-t7M7D8N6sZ/mathsat [2023-11-19 05:03:31,422 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89af4b0d-483b-4e37-bf97-3f8e96705c98/bin/utaipan-verify-t7M7D8N6sZ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-19 05:03:31,423 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89af4b0d-483b-4e37-bf97-3f8e96705c98/bin/utaipan-verify-t7M7D8N6sZ/mathsat -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 [2023-11-19 05:03:31,823 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-19 05:03:31,823 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-19 05:03:31,830 INFO L262 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-19 05:03:31,836 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 05:03:31,850 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-19 05:03:31,851 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-19 05:03:31,852 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-19 05:03:31,857 INFO L378 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 [2023-11-19 05:03:31,930 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-19 05:03:31,930 INFO L378 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 [2023-11-19 05:03:31,954 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2023-11-19 05:03:31,954 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 05:03:31,954 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-19 05:03:31,955 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [222243931] [2023-11-19 05:03:31,955 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [222243931] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:03:31,955 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:03:31,955 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 05:03:31,956 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [460555797] [2023-11-19 05:03:31,956 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:03:31,956 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 05:03:31,957 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-19 05:03:31,957 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 05:03:31,958 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-19 05:03:31,958 INFO L87 Difference]: Start difference. First operand 299 states and 383 transitions. Second operand has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-19 05:03:33,681 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.18s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-19 05:03:36,756 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-19 05:03:39,488 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:03:39,489 INFO L93 Difference]: Finished difference Result 390 states and 515 transitions. [2023-11-19 05:03:39,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 05:03:39,490 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 88 [2023-11-19 05:03:39,491 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:03:39,494 INFO L225 Difference]: With dead ends: 390 [2023-11-19 05:03:39,494 INFO L226 Difference]: Without dead ends: 390 [2023-11-19 05:03:39,494 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 85 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-19 05:03:39,501 INFO L413 NwaCegarLoop]: 200 mSDtfsCounter, 131 mSDsluCounter, 359 mSDsCounter, 0 mSdLazyCounter, 123 mSolverCounterSat, 2 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 136 SdHoareTripleChecker+Valid, 559 SdHoareTripleChecker+Invalid, 126 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 123 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.5s IncrementalHoareTripleChecker+Time [2023-11-19 05:03:39,501 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [136 Valid, 559 Invalid, 126 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 123 Invalid, 1 Unknown, 0 Unchecked, 7.5s Time] [2023-11-19 05:03:39,502 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 390 states. [2023-11-19 05:03:39,512 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 390 to 301. [2023-11-19 05:03:39,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 301 states, 280 states have (on average 1.2714285714285714) internal successors, (356), 293 states have internal predecessors, (356), 15 states have call successors, (15), 4 states have call predecessors, (15), 4 states have return successors, (14), 5 states have call predecessors, (14), 13 states have call successors, (14) [2023-11-19 05:03:39,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 301 states to 301 states and 385 transitions. [2023-11-19 05:03:39,517 INFO L78 Accepts]: Start accepts. Automaton has 301 states and 385 transitions. Word has length 88 [2023-11-19 05:03:39,517 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:03:39,517 INFO L495 AbstractCegarLoop]: Abstraction has 301 states and 385 transitions. [2023-11-19 05:03:39,518 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-19 05:03:39,518 INFO L276 IsEmpty]: Start isEmpty. Operand 301 states and 385 transitions. [2023-11-19 05:03:39,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2023-11-19 05:03:39,521 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:03:39,521 INFO L195 NwaCegarLoop]: trace histogram [8, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 05:03:39,525 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89af4b0d-483b-4e37-bf97-3f8e96705c98/bin/utaipan-verify-t7M7D8N6sZ/mathsat -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)] Ended with exit code 0 [2023-11-19 05:03:39,725 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89af4b0d-483b-4e37-bf97-3f8e96705c98/bin/utaipan-verify-t7M7D8N6sZ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-19 05:03:39,725 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2023-11-19 05:03:39,726 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:03:39,727 INFO L85 PathProgramCache]: Analyzing trace with hash -673611810, now seen corresponding path program 1 times [2023-11-19 05:03:39,727 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-19 05:03:39,728 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1138620967] [2023-11-19 05:03:39,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:03:39,728 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-19 05:03:39,728 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89af4b0d-483b-4e37-bf97-3f8e96705c98/bin/utaipan-verify-t7M7D8N6sZ/mathsat [2023-11-19 05:03:39,729 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89af4b0d-483b-4e37-bf97-3f8e96705c98/bin/utaipan-verify-t7M7D8N6sZ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-19 05:03:39,731 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89af4b0d-483b-4e37-bf97-3f8e96705c98/bin/utaipan-verify-t7M7D8N6sZ/mathsat -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 [2023-11-19 05:03:40,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:03:40,492 INFO L262 TraceCheckSpWp]: Trace formula consists of 623 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-19 05:03:40,497 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 05:03:40,641 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 30 proven. 10 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-11-19 05:03:40,641 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 05:03:40,967 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 2 proven. 37 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-11-19 05:03:40,968 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-19 05:03:40,968 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1138620967] [2023-11-19 05:03:40,968 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1138620967] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 05:03:40,968 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [325108574] [2023-11-19 05:03:40,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:03:40,968 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-11-19 05:03:40,969 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89af4b0d-483b-4e37-bf97-3f8e96705c98/bin/utaipan-verify-t7M7D8N6sZ/cvc4 [2023-11-19 05:03:40,972 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89af4b0d-483b-4e37-bf97-3f8e96705c98/bin/utaipan-verify-t7M7D8N6sZ/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-11-19 05:03:40,980 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89af4b0d-483b-4e37-bf97-3f8e96705c98/bin/utaipan-verify-t7M7D8N6sZ/cvc4 --incremental --print-success --lang smt (12)] Waiting until timeout for monitored process [2023-11-19 05:03:41,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:03:41,810 INFO L262 TraceCheckSpWp]: Trace formula consists of 623 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-19 05:03:41,814 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 05:03:41,887 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2023-11-19 05:03:41,888 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 05:03:41,888 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [325108574] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:03:41,888 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-11-19 05:03:41,888 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [8, 8] total 15 [2023-11-19 05:03:41,889 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1531423576] [2023-11-19 05:03:41,889 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:03:41,889 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 05:03:41,890 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-19 05:03:41,890 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 05:03:41,891 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=147, Unknown=0, NotChecked=0, Total=210 [2023-11-19 05:03:41,891 INFO L87 Difference]: Start difference. First operand 301 states and 385 transitions. Second operand has 3 states, 3 states have (on average 37.0) internal successors, (111), 3 states have internal predecessors, (111), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-19 05:03:42,060 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:03:42,060 INFO L93 Difference]: Finished difference Result 343 states and 427 transitions. [2023-11-19 05:03:42,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 05:03:42,061 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 37.0) internal successors, (111), 3 states have internal predecessors, (111), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 127 [2023-11-19 05:03:42,061 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:03:42,063 INFO L225 Difference]: With dead ends: 343 [2023-11-19 05:03:42,064 INFO L226 Difference]: Without dead ends: 343 [2023-11-19 05:03:42,064 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 378 GetRequests, 365 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=63, Invalid=147, Unknown=0, NotChecked=0, Total=210 [2023-11-19 05:03:42,065 INFO L413 NwaCegarLoop]: 207 mSDtfsCounter, 8 mSDsluCounter, 192 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 399 SdHoareTripleChecker+Invalid, 70 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-19 05:03:42,065 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 399 Invalid, 70 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-19 05:03:42,066 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 343 states. [2023-11-19 05:03:42,075 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 343 to 341. [2023-11-19 05:03:42,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 341 states, 320 states have (on average 1.2375) internal successors, (396), 333 states have internal predecessors, (396), 15 states have call successors, (15), 4 states have call predecessors, (15), 4 states have return successors, (14), 5 states have call predecessors, (14), 13 states have call successors, (14) [2023-11-19 05:03:42,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 341 states to 341 states and 425 transitions. [2023-11-19 05:03:42,078 INFO L78 Accepts]: Start accepts. Automaton has 341 states and 425 transitions. Word has length 127 [2023-11-19 05:03:42,079 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:03:42,079 INFO L495 AbstractCegarLoop]: Abstraction has 341 states and 425 transitions. [2023-11-19 05:03:42,079 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 37.0) internal successors, (111), 3 states have internal predecessors, (111), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-19 05:03:42,079 INFO L276 IsEmpty]: Start isEmpty. Operand 341 states and 425 transitions. [2023-11-19 05:03:42,081 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2023-11-19 05:03:42,081 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:03:42,082 INFO L195 NwaCegarLoop]: trace histogram [8, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 05:03:42,092 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89af4b0d-483b-4e37-bf97-3f8e96705c98/bin/utaipan-verify-t7M7D8N6sZ/cvc4 --incremental --print-success --lang smt (12)] Forceful destruction successful, exit code 0 [2023-11-19 05:03:42,299 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89af4b0d-483b-4e37-bf97-3f8e96705c98/bin/utaipan-verify-t7M7D8N6sZ/mathsat -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 [2023-11-19 05:03:42,492 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89af4b0d-483b-4e37-bf97-3f8e96705c98/bin/utaipan-verify-t7M7D8N6sZ/cvc4 --incremental --print-success --lang smt,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89af4b0d-483b-4e37-bf97-3f8e96705c98/bin/utaipan-verify-t7M7D8N6sZ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-19 05:03:42,492 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2023-11-19 05:03:42,492 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:03:42,492 INFO L85 PathProgramCache]: Analyzing trace with hash 324824290, now seen corresponding path program 1 times [2023-11-19 05:03:42,493 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-19 05:03:42,493 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1281392474] [2023-11-19 05:03:42,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:03:42,493 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-19 05:03:42,493 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89af4b0d-483b-4e37-bf97-3f8e96705c98/bin/utaipan-verify-t7M7D8N6sZ/mathsat [2023-11-19 05:03:42,494 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89af4b0d-483b-4e37-bf97-3f8e96705c98/bin/utaipan-verify-t7M7D8N6sZ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-19 05:03:42,496 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89af4b0d-483b-4e37-bf97-3f8e96705c98/bin/utaipan-verify-t7M7D8N6sZ/mathsat -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 [2023-11-19 05:03:43,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:03:43,264 INFO L262 TraceCheckSpWp]: Trace formula consists of 625 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-19 05:03:43,268 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 05:03:43,391 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 30 proven. 10 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-11-19 05:03:43,391 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 05:03:43,708 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 2 proven. 37 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-11-19 05:03:43,708 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-19 05:03:43,709 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1281392474] [2023-11-19 05:03:43,709 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1281392474] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 05:03:43,709 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1884879110] [2023-11-19 05:03:43,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:03:43,709 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-11-19 05:03:43,710 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89af4b0d-483b-4e37-bf97-3f8e96705c98/bin/utaipan-verify-t7M7D8N6sZ/cvc4 [2023-11-19 05:03:43,717 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89af4b0d-483b-4e37-bf97-3f8e96705c98/bin/utaipan-verify-t7M7D8N6sZ/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-11-19 05:03:43,720 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89af4b0d-483b-4e37-bf97-3f8e96705c98/bin/utaipan-verify-t7M7D8N6sZ/cvc4 --incremental --print-success --lang smt (14)] Waiting until timeout for monitored process [2023-11-19 05:03:44,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:03:44,632 INFO L262 TraceCheckSpWp]: Trace formula consists of 625 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-19 05:03:44,637 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 05:03:45,142 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2023-11-19 05:03:45,142 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 05:03:45,142 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1884879110] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:03:45,142 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-11-19 05:03:45,143 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [8, 8] total 16 [2023-11-19 05:03:45,143 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [152454384] [2023-11-19 05:03:45,143 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:03:45,144 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 05:03:45,144 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-19 05:03:45,144 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 05:03:45,145 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2023-11-19 05:03:45,145 INFO L87 Difference]: Start difference. First operand 341 states and 425 transitions. Second operand has 4 states, 4 states have (on average 28.0) internal successors, (112), 4 states have internal predecessors, (112), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-19 05:03:47,870 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-19 05:03:49,880 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers []