./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memcleanup.prp --file ../../sv-benchmarks/c/uthash-2.0.2/uthash_BER_nondet_test2-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (memcleanup) Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87a9aa1f-2af0-408c-bce7-371829a990a5/bin/utaipan-verify-nQ1chXbOIh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87a9aa1f-2af0-408c-bce7-371829a990a5/bin/utaipan-verify-nQ1chXbOIh/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87a9aa1f-2af0-408c-bce7-371829a990a5/bin/utaipan-verify-nQ1chXbOIh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87a9aa1f-2af0-408c-bce7-371829a990a5/bin/utaipan-verify-nQ1chXbOIh/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_BER_nondet_test2-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87a9aa1f-2af0-408c-bce7-371829a990a5/bin/utaipan-verify-nQ1chXbOIh/config/svcomp-MemCleanup-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87a9aa1f-2af0-408c-bce7-371829a990a5/bin/utaipan-verify-nQ1chXbOIh --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 e277983cfe4b30513b023d34f2b840358d8a25fd7a5c39241cadd105379bfb92 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-12-02 15:44:24,117 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-02 15:44:24,182 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87a9aa1f-2af0-408c-bce7-371829a990a5/bin/utaipan-verify-nQ1chXbOIh/config/svcomp-MemCleanup-32bit-Taipan_Default.epf [2023-12-02 15:44:24,186 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-02 15:44:24,187 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-02 15:44:24,223 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-02 15:44:24,224 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-02 15:44:24,224 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-02 15:44:24,225 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-02 15:44:24,238 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-02 15:44:24,238 INFO L153 SettingsManager]: * User list type=DISABLED [2023-12-02 15:44:24,239 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-12-02 15:44:24,239 INFO L153 SettingsManager]: * Explicit value domain=true [2023-12-02 15:44:24,240 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-12-02 15:44:24,241 INFO L153 SettingsManager]: * Octagon Domain=false [2023-12-02 15:44:24,241 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-12-02 15:44:24,242 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-12-02 15:44:24,242 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-12-02 15:44:24,243 INFO L153 SettingsManager]: * Interval Domain=false [2023-12-02 15:44:24,243 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-12-02 15:44:24,244 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-12-02 15:44:24,244 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-12-02 15:44:24,245 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-02 15:44:24,245 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-02 15:44:24,246 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-02 15:44:24,246 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-02 15:44:24,247 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-02 15:44:24,247 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-02 15:44:24,248 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-02 15:44:24,248 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-02 15:44:24,248 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-02 15:44:24,249 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-12-02 15:44:24,249 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-12-02 15:44:24,249 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-02 15:44:24,250 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-02 15:44:24,250 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-12-02 15:44:24,250 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-12-02 15:44:24,250 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-02 15:44:24,250 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-02 15:44:24,251 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-02 15:44:24,251 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-02 15:44:24,251 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-02 15:44:24,251 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-02 15:44:24,252 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 15:44:24,252 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-02 15:44:24,252 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-02 15:44:24,252 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-12-02 15:44:24,252 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-02 15:44:24,253 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-02 15:44:24,253 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-12-02 15:44:24,253 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-02 15:44:24,253 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_87a9aa1f-2af0-408c-bce7-371829a990a5/bin/utaipan-verify-nQ1chXbOIh/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87a9aa1f-2af0-408c-bce7-371829a990a5/bin/utaipan-verify-nQ1chXbOIh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-memcleanup) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e277983cfe4b30513b023d34f2b840358d8a25fd7a5c39241cadd105379bfb92 [2023-12-02 15:44:24,477 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-02 15:44:24,497 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-02 15:44:24,500 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-02 15:44:24,501 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-02 15:44:24,501 INFO L274 PluginConnector]: CDTParser initialized [2023-12-02 15:44:24,502 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87a9aa1f-2af0-408c-bce7-371829a990a5/bin/utaipan-verify-nQ1chXbOIh/../../sv-benchmarks/c/uthash-2.0.2/uthash_BER_nondet_test2-1.i [2023-12-02 15:44:27,219 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-02 15:44:27,507 INFO L384 CDTParser]: Found 1 translation units. [2023-12-02 15:44:27,508 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87a9aa1f-2af0-408c-bce7-371829a990a5/sv-benchmarks/c/uthash-2.0.2/uthash_BER_nondet_test2-1.i [2023-12-02 15:44:27,525 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87a9aa1f-2af0-408c-bce7-371829a990a5/bin/utaipan-verify-nQ1chXbOIh/data/f9153ce0e/998ff828d23a4ebdbe4fe1c123b68aa1/FLAGb23e4b20a [2023-12-02 15:44:27,540 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87a9aa1f-2af0-408c-bce7-371829a990a5/bin/utaipan-verify-nQ1chXbOIh/data/f9153ce0e/998ff828d23a4ebdbe4fe1c123b68aa1 [2023-12-02 15:44:27,543 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-02 15:44:27,544 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-12-02 15:44:27,545 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-02 15:44:27,546 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-02 15:44:27,551 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-02 15:44:27,551 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 03:44:27" (1/1) ... [2023-12-02 15:44:27,553 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@e8f3075 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:44:27, skipping insertion in model container [2023-12-02 15:44:27,553 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 03:44:27" (1/1) ... [2023-12-02 15:44:27,620 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-02 15:44:28,093 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 15:44:28,106 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) [2023-12-02 15:44:28,106 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@4558e318 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:44:28, skipping insertion in model container [2023-12-02 15:44:28,107 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-02 15:44:28,107 INFO L186 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2023-12-02 15:44:28,109 INFO L158 Benchmark]: Toolchain (without parser) took 563.91ms. Allocated memory is still 174.1MB. Free memory was 143.8MB in the beginning and 124.1MB in the end (delta: 19.7MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2023-12-02 15:44:28,109 INFO L158 Benchmark]: CDTParser took 0.18ms. Allocated memory is still 121.6MB. Free memory is still 94.3MB. There was no memory consumed. Max. memory is 16.1GB. [2023-12-02 15:44:28,110 INFO L158 Benchmark]: CACSL2BoogieTranslator took 561.57ms. Allocated memory is still 174.1MB. Free memory was 143.0MB in the beginning and 124.1MB in the end (delta: 18.9MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2023-12-02 15:44:28,112 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18ms. Allocated memory is still 121.6MB. Free memory is still 94.3MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 561.57ms. Allocated memory is still 174.1MB. Free memory was 143.0MB in the beginning and 124.1MB in the end (delta: 18.9MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 817]: Unsupported Syntax Found a cast between two array/pointer types of different sizes while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87a9aa1f-2af0-408c-bce7-371829a990a5/bin/utaipan-verify-nQ1chXbOIh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87a9aa1f-2af0-408c-bce7-371829a990a5/bin/utaipan-verify-nQ1chXbOIh/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87a9aa1f-2af0-408c-bce7-371829a990a5/bin/utaipan-verify-nQ1chXbOIh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87a9aa1f-2af0-408c-bce7-371829a990a5/bin/utaipan-verify-nQ1chXbOIh/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_BER_nondet_test2-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87a9aa1f-2af0-408c-bce7-371829a990a5/bin/utaipan-verify-nQ1chXbOIh/config/svcomp-MemCleanup-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87a9aa1f-2af0-408c-bce7-371829a990a5/bin/utaipan-verify-nQ1chXbOIh --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 e277983cfe4b30513b023d34f2b840358d8a25fd7a5c39241cadd105379bfb92 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-12-02 15:44:29,923 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-02 15:44:30,003 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87a9aa1f-2af0-408c-bce7-371829a990a5/bin/utaipan-verify-nQ1chXbOIh/config/svcomp-MemCleanup-32bit-Taipan_Bitvector.epf [2023-12-02 15:44:30,008 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-02 15:44:30,009 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-02 15:44:30,034 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-02 15:44:30,035 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-02 15:44:30,035 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-02 15:44:30,036 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-02 15:44:30,036 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-02 15:44:30,037 INFO L153 SettingsManager]: * User list type=DISABLED [2023-12-02 15:44:30,037 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-12-02 15:44:30,038 INFO L153 SettingsManager]: * Explicit value domain=true [2023-12-02 15:44:30,038 INFO L153 SettingsManager]: * Octagon Domain=false [2023-12-02 15:44:30,039 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-12-02 15:44:30,040 INFO L153 SettingsManager]: * Interval Domain=false [2023-12-02 15:44:30,040 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-02 15:44:30,041 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-02 15:44:30,041 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-02 15:44:30,042 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-02 15:44:30,042 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-02 15:44:30,043 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-02 15:44:30,043 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-02 15:44:30,044 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-02 15:44:30,044 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-02 15:44:30,045 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-12-02 15:44:30,045 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-12-02 15:44:30,046 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-02 15:44:30,046 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-02 15:44:30,046 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-12-02 15:44:30,047 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-12-02 15:44:30,047 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-12-02 15:44:30,047 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-12-02 15:44:30,048 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-02 15:44:30,048 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-02 15:44:30,048 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-02 15:44:30,048 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-02 15:44:30,049 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-02 15:44:30,049 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-02 15:44:30,049 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-02 15:44:30,049 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 15:44:30,050 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-02 15:44:30,050 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-02 15:44:30,050 INFO L153 SettingsManager]: * Trace refinement strategy=WALRUS [2023-12-02 15:44:30,050 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-12-02 15:44:30,050 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-02 15:44:30,051 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-12-02 15:44:30,051 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-02 15:44:30,051 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_87a9aa1f-2af0-408c-bce7-371829a990a5/bin/utaipan-verify-nQ1chXbOIh/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87a9aa1f-2af0-408c-bce7-371829a990a5/bin/utaipan-verify-nQ1chXbOIh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-memcleanup) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e277983cfe4b30513b023d34f2b840358d8a25fd7a5c39241cadd105379bfb92 [2023-12-02 15:44:30,320 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-02 15:44:30,341 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-02 15:44:30,344 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-02 15:44:30,345 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-02 15:44:30,345 INFO L274 PluginConnector]: CDTParser initialized [2023-12-02 15:44:30,347 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87a9aa1f-2af0-408c-bce7-371829a990a5/bin/utaipan-verify-nQ1chXbOIh/../../sv-benchmarks/c/uthash-2.0.2/uthash_BER_nondet_test2-1.i [2023-12-02 15:44:33,115 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-02 15:44:33,409 INFO L384 CDTParser]: Found 1 translation units. [2023-12-02 15:44:33,409 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87a9aa1f-2af0-408c-bce7-371829a990a5/sv-benchmarks/c/uthash-2.0.2/uthash_BER_nondet_test2-1.i [2023-12-02 15:44:33,427 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87a9aa1f-2af0-408c-bce7-371829a990a5/bin/utaipan-verify-nQ1chXbOIh/data/e81d18fe9/d04335249820499ebafb646143eefa3e/FLAG6a78ead5e [2023-12-02 15:44:33,441 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87a9aa1f-2af0-408c-bce7-371829a990a5/bin/utaipan-verify-nQ1chXbOIh/data/e81d18fe9/d04335249820499ebafb646143eefa3e [2023-12-02 15:44:33,444 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-02 15:44:33,445 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-12-02 15:44:33,446 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-02 15:44:33,446 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-02 15:44:33,450 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-02 15:44:33,451 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 03:44:33" (1/1) ... [2023-12-02 15:44:33,452 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@19a29802 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:44:33, skipping insertion in model container [2023-12-02 15:44:33,452 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 03:44:33" (1/1) ... [2023-12-02 15:44:33,517 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-02 15:44:34,009 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 15:44:34,022 INFO L199 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2023-12-02 15:44:34,042 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-02 15:44:34,130 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 15:44:34,134 INFO L202 MainTranslator]: Completed pre-run [2023-12-02 15:44:34,200 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 15:44:34,244 WARN L675 CHandler]: The function memcmp is called, but not defined or handled by StandardFunctionHandler. [2023-12-02 15:44:34,252 INFO L206 MainTranslator]: Completed translation [2023-12-02 15:44:34,253 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:44:34 WrapperNode [2023-12-02 15:44:34,253 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-02 15:44:34,254 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-02 15:44:34,254 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-02 15:44:34,254 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-02 15:44:34,261 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:44:34" (1/1) ... [2023-12-02 15:44:34,293 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:44:34" (1/1) ... [2023-12-02 15:44:34,347 INFO L138 Inliner]: procedures = 210, calls = 230, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 867 [2023-12-02 15:44:34,347 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-02 15:44:34,348 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-02 15:44:34,348 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-02 15:44:34,348 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-02 15:44:34,358 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:44:34" (1/1) ... [2023-12-02 15:44:34,358 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:44:34" (1/1) ... [2023-12-02 15:44:34,369 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:44:34" (1/1) ... [2023-12-02 15:44:34,370 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:44:34" (1/1) ... [2023-12-02 15:44:34,411 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:44:34" (1/1) ... [2023-12-02 15:44:34,436 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:44:34" (1/1) ... [2023-12-02 15:44:34,442 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:44:34" (1/1) ... [2023-12-02 15:44:34,447 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:44:34" (1/1) ... [2023-12-02 15:44:34,456 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-02 15:44:34,457 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-02 15:44:34,457 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-02 15:44:34,457 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-02 15:44:34,458 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:44:34" (1/1) ... [2023-12-02 15:44:34,464 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 15:44:34,476 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87a9aa1f-2af0-408c-bce7-371829a990a5/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 15:44:34,491 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87a9aa1f-2af0-408c-bce7-371829a990a5/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-12-02 15:44:34,497 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87a9aa1f-2af0-408c-bce7-371829a990a5/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-12-02 15:44:34,527 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2023-12-02 15:44:34,527 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2023-12-02 15:44:34,527 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2023-12-02 15:44:34,527 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2023-12-02 15:44:34,527 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-12-02 15:44:34,527 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2023-12-02 15:44:34,528 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-12-02 15:44:34,528 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2023-12-02 15:44:34,528 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-12-02 15:44:34,528 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2023-12-02 15:44:34,528 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-12-02 15:44:34,528 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-02 15:44:34,528 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-12-02 15:44:34,529 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-02 15:44:34,529 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-02 15:44:34,717 INFO L241 CfgBuilder]: Building ICFG [2023-12-02 15:44:34,720 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-02 15:44:41,603 INFO L282 CfgBuilder]: Performing block encoding [2023-12-02 15:44:41,637 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-02 15:44:41,637 INFO L309 CfgBuilder]: Removed 54 assume(true) statements. [2023-12-02 15:44:41,638 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 03:44:41 BoogieIcfgContainer [2023-12-02 15:44:41,638 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-02 15:44:41,641 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-02 15:44:41,641 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-02 15:44:41,644 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-02 15:44:41,644 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 03:44:33" (1/3) ... [2023-12-02 15:44:41,645 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@873940a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 03:44:41, skipping insertion in model container [2023-12-02 15:44:41,645 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:44:34" (2/3) ... [2023-12-02 15:44:41,646 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@873940a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 03:44:41, skipping insertion in model container [2023-12-02 15:44:41,646 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 03:44:41" (3/3) ... [2023-12-02 15:44:41,647 INFO L112 eAbstractionObserver]: Analyzing ICFG uthash_BER_nondet_test2-1.i [2023-12-02 15:44:41,666 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-02 15:44:41,666 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-12-02 15:44:41,710 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-02 15:44:41,717 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;@746d8f1c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-02 15:44:41,717 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-12-02 15:44:41,723 INFO L276 IsEmpty]: Start isEmpty. Operand has 166 states, 159 states have (on average 1.679245283018868) internal successors, (267), 161 states have internal predecessors, (267), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-12-02 15:44:41,728 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2023-12-02 15:44:41,729 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 15:44:41,729 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2023-12-02 15:44:41,730 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK] === [2023-12-02 15:44:41,734 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 15:44:41,734 INFO L85 PathProgramCache]: Analyzing trace with hash 697811, now seen corresponding path program 1 times [2023-12-02 15:44:41,744 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 15:44:41,744 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [285036981] [2023-12-02 15:44:41,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:44:41,745 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 [2023-12-02 15:44:41,745 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87a9aa1f-2af0-408c-bce7-371829a990a5/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 15:44:41,746 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87a9aa1f-2af0-408c-bce7-371829a990a5/bin/utaipan-verify-nQ1chXbOIh/mathsat -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) [2023-12-02 15:44:41,749 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87a9aa1f-2af0-408c-bce7-371829a990a5/bin/utaipan-verify-nQ1chXbOIh/mathsat -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 [2023-12-02 15:44:41,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:44:41,872 INFO L262 TraceCheckSpWp]: Trace formula consists of 27 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-02 15:44:41,877 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 15:44:41,996 WARN L876 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_main_~#i~0#1.base_23| (_ BitVec 32))) (and (= (store |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#i~0#1.base_23| (_ bv0 1)) |c_#valid|) (= (_ bv0 1) (select |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#i~0#1.base_23|)))) is different from true [2023-12-02 15:44:41,997 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 15:44:41,998 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 15:44:41,998 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 15:44:41,999 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [285036981] [2023-12-02 15:44:41,999 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [285036981] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 15:44:42,000 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 15:44:42,000 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-02 15:44:42,001 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [60049764] [2023-12-02 15:44:42,002 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 15:44:42,005 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 15:44:42,006 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 15:44:42,030 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 15:44:42,030 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=4, Unknown=1, NotChecked=2, Total=12 [2023-12-02 15:44:42,033 INFO L87 Difference]: Start difference. First operand has 166 states, 159 states have (on average 1.679245283018868) internal successors, (267), 161 states have internal predecessors, (267), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 4 states, 3 states have (on average 1.0) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 15:44:44,338 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 15:44:45,637 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.22s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 15:44:45,650 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 15:44:45,650 INFO L93 Difference]: Finished difference Result 235 states and 303 transitions. [2023-12-02 15:44:45,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-02 15:44:45,653 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.0) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2023-12-02 15:44:45,653 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 15:44:45,662 INFO L225 Difference]: With dead ends: 235 [2023-12-02 15:44:45,662 INFO L226 Difference]: Without dead ends: 233 [2023-12-02 15:44:45,663 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=4, Unknown=1, NotChecked=2, Total=12 [2023-12-02 15:44:45,666 INFO L413 NwaCegarLoop]: 200 mSDtfsCounter, 89 mSDsluCounter, 192 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 89 SdHoareTripleChecker+Valid, 392 SdHoareTripleChecker+Invalid, 334 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 304 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2023-12-02 15:44:45,667 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [89 Valid, 392 Invalid, 334 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 29 Invalid, 1 Unknown, 304 Unchecked, 3.6s Time] [2023-12-02 15:44:45,682 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 233 states. [2023-12-02 15:44:45,707 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 233 to 164. [2023-12-02 15:44:45,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 164 states, 158 states have (on average 1.2911392405063291) internal successors, (204), 159 states have internal predecessors, (204), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-12-02 15:44:45,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 164 states and 210 transitions. [2023-12-02 15:44:45,713 INFO L78 Accepts]: Start accepts. Automaton has 164 states and 210 transitions. Word has length 3 [2023-12-02 15:44:45,713 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 15:44:45,713 INFO L495 AbstractCegarLoop]: Abstraction has 164 states and 210 transitions. [2023-12-02 15:44:45,714 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.0) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 15:44:45,714 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states and 210 transitions. [2023-12-02 15:44:45,714 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2023-12-02 15:44:45,714 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 15:44:45,715 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 15:44:45,718 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87a9aa1f-2af0-408c-bce7-371829a990a5/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2023-12-02 15:44:45,915 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87a9aa1f-2af0-408c-bce7-371829a990a5/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 15:44:45,916 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK] === [2023-12-02 15:44:45,916 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 15:44:45,917 INFO L85 PathProgramCache]: Analyzing trace with hash 615838540, now seen corresponding path program 1 times [2023-12-02 15:44:45,917 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 15:44:45,917 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1832066086] [2023-12-02 15:44:45,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:44:45,918 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 [2023-12-02 15:44:45,918 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87a9aa1f-2af0-408c-bce7-371829a990a5/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 15:44:45,919 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87a9aa1f-2af0-408c-bce7-371829a990a5/bin/utaipan-verify-nQ1chXbOIh/mathsat -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) [2023-12-02 15:44:45,920 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87a9aa1f-2af0-408c-bce7-371829a990a5/bin/utaipan-verify-nQ1chXbOIh/mathsat -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 [2023-12-02 15:44:46,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:44:46,103 INFO L262 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-02 15:44:46,105 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 15:44:46,209 WARN L876 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_main_~#i~0#1.base_24| (_ BitVec 32))) (and (= |c_#valid| (store |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#i~0#1.base_24| (_ bv0 1))) (= (select |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#i~0#1.base_24|) (_ bv0 1)))) is different from true [2023-12-02 15:44:46,210 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 15:44:46,210 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 15:44:46,210 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 15:44:46,211 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1832066086] [2023-12-02 15:44:46,211 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1832066086] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 15:44:46,211 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 15:44:46,211 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-02 15:44:46,212 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [707735693] [2023-12-02 15:44:46,212 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 15:44:46,213 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 15:44:46,213 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 15:44:46,214 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 15:44:46,214 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=4, Unknown=1, NotChecked=2, Total=12 [2023-12-02 15:44:46,214 INFO L87 Difference]: Start difference. First operand 164 states and 210 transitions. Second operand has 4 states, 3 states have (on average 3.0) internal successors, (9), 3 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) [2023-12-02 15:44:48,453 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 [] [2023-12-02 15:44:49,755 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.23s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 15:44:49,765 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 15:44:49,766 INFO L93 Difference]: Finished difference Result 234 states and 300 transitions. [2023-12-02 15:44:49,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-02 15:44:49,766 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 3 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 [2023-12-02 15:44:49,767 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 15:44:49,768 INFO L225 Difference]: With dead ends: 234 [2023-12-02 15:44:49,769 INFO L226 Difference]: Without dead ends: 232 [2023-12-02 15:44:49,769 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=4, Unknown=1, NotChecked=2, Total=12 [2023-12-02 15:44:49,770 INFO L413 NwaCegarLoop]: 200 mSDtfsCounter, 83 mSDsluCounter, 192 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 83 SdHoareTripleChecker+Valid, 392 SdHoareTripleChecker+Invalid, 325 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 299 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2023-12-02 15:44:49,771 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [83 Valid, 392 Invalid, 325 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 25 Invalid, 1 Unknown, 299 Unchecked, 3.5s Time] [2023-12-02 15:44:49,772 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 232 states. [2023-12-02 15:44:49,791 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 232 to 229. [2023-12-02 15:44:49,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 229 states, 223 states have (on average 1.3004484304932735) internal successors, (290), 224 states have internal predecessors, (290), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-12-02 15:44:49,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 229 states to 229 states and 296 transitions. [2023-12-02 15:44:49,795 INFO L78 Accepts]: Start accepts. Automaton has 229 states and 296 transitions. Word has length 9 [2023-12-02 15:44:49,795 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 15:44:49,796 INFO L495 AbstractCegarLoop]: Abstraction has 229 states and 296 transitions. [2023-12-02 15:44:49,796 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 3 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) [2023-12-02 15:44:49,796 INFO L276 IsEmpty]: Start isEmpty. Operand 229 states and 296 transitions. [2023-12-02 15:44:49,798 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2023-12-02 15:44:49,798 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 15:44:49,799 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 15:44:49,802 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87a9aa1f-2af0-408c-bce7-371829a990a5/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Ended with exit code 0 [2023-12-02 15:44:49,999 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87a9aa1f-2af0-408c-bce7-371829a990a5/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 15:44:49,999 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK] === [2023-12-02 15:44:50,000 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 15:44:50,000 INFO L85 PathProgramCache]: Analyzing trace with hash -1603213472, now seen corresponding path program 1 times [2023-12-02 15:44:50,001 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 15:44:50,001 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1665518411] [2023-12-02 15:44:50,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:44:50,001 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 [2023-12-02 15:44:50,002 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87a9aa1f-2af0-408c-bce7-371829a990a5/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 15:44:50,003 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87a9aa1f-2af0-408c-bce7-371829a990a5/bin/utaipan-verify-nQ1chXbOIh/mathsat -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) [2023-12-02 15:44:50,004 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87a9aa1f-2af0-408c-bce7-371829a990a5/bin/utaipan-verify-nQ1chXbOIh/mathsat -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 [2023-12-02 15:44:50,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:44:50,160 INFO L262 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-02 15:44:50,163 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 15:44:50,195 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 15:44:50,195 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 15:44:50,195 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 15:44:50,196 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1665518411] [2023-12-02 15:44:50,196 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1665518411] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 15:44:50,196 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 15:44:50,196 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-02 15:44:50,197 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [332299701] [2023-12-02 15:44:50,197 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 15:44:50,197 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 15:44:50,198 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 15:44:50,198 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 15:44:50,199 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-02 15:44:50,199 INFO L87 Difference]: Start difference. First operand 229 states and 296 transitions. Second operand has 4 states, 4 states have (on average 12.0) internal successors, (48), 4 states have internal predecessors, (48), 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) [2023-12-02 15:44:50,366 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 15:44:50,366 INFO L93 Difference]: Finished difference Result 237 states and 288 transitions. [2023-12-02 15:44:50,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-02 15:44:50,368 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.0) internal successors, (48), 4 states have internal predecessors, (48), 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 48 [2023-12-02 15:44:50,368 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 15:44:50,370 INFO L225 Difference]: With dead ends: 237 [2023-12-02 15:44:50,370 INFO L226 Difference]: Without dead ends: 237 [2023-12-02 15:44:50,371 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-02 15:44:50,372 INFO L413 NwaCegarLoop]: 178 mSDtfsCounter, 36 mSDsluCounter, 332 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 510 SdHoareTripleChecker+Invalid, 69 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-02 15:44:50,372 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 510 Invalid, 69 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-02 15:44:50,374 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 237 states. [2023-12-02 15:44:50,384 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 237 to 235. [2023-12-02 15:44:50,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 235 states, 229 states have (on average 1.222707423580786) internal successors, (280), 230 states have internal predecessors, (280), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-12-02 15:44:50,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 235 states to 235 states and 286 transitions. [2023-12-02 15:44:50,387 INFO L78 Accepts]: Start accepts. Automaton has 235 states and 286 transitions. Word has length 48 [2023-12-02 15:44:50,387 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 15:44:50,387 INFO L495 AbstractCegarLoop]: Abstraction has 235 states and 286 transitions. [2023-12-02 15:44:50,388 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.0) internal successors, (48), 4 states have internal predecessors, (48), 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) [2023-12-02 15:44:50,388 INFO L276 IsEmpty]: Start isEmpty. Operand 235 states and 286 transitions. [2023-12-02 15:44:50,390 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2023-12-02 15:44:50,390 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 15:44:50,390 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 15:44:50,393 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87a9aa1f-2af0-408c-bce7-371829a990a5/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Ended with exit code 0 [2023-12-02 15:44:50,590 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87a9aa1f-2af0-408c-bce7-371829a990a5/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 15:44:50,591 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK] === [2023-12-02 15:44:50,591 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 15:44:50,591 INFO L85 PathProgramCache]: Analyzing trace with hash -96637868, now seen corresponding path program 1 times [2023-12-02 15:44:50,592 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 15:44:50,592 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [351639560] [2023-12-02 15:44:50,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:44:50,592 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 [2023-12-02 15:44:50,592 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87a9aa1f-2af0-408c-bce7-371829a990a5/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 15:44:50,593 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87a9aa1f-2af0-408c-bce7-371829a990a5/bin/utaipan-verify-nQ1chXbOIh/mathsat -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) [2023-12-02 15:44:50,594 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87a9aa1f-2af0-408c-bce7-371829a990a5/bin/utaipan-verify-nQ1chXbOIh/mathsat -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 [2023-12-02 15:44:50,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:44:50,758 INFO L262 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-02 15:44:50,762 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 15:44:50,779 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-02 15:44:50,780 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-02 15:44:50,781 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-02 15:44:50,787 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 [2023-12-02 15:44:50,884 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 15:44:50,885 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 [2023-12-02 15:44:50,960 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 15:44:50,960 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 15:44:50,961 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 15:44:50,961 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [351639560] [2023-12-02 15:44:50,961 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [351639560] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 15:44:50,961 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 15:44:50,962 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-02 15:44:50,962 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [915686749] [2023-12-02 15:44:50,962 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 15:44:50,963 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-02 15:44:50,963 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 15:44:50,964 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-02 15:44:50,964 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-02 15:44:50,964 INFO L87 Difference]: Start difference. First operand 235 states and 286 transitions. Second operand has 5 states, 5 states have (on average 9.6) internal successors, (48), 5 states have internal predecessors, (48), 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) [2023-12-02 15:44:56,629 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 [] [2023-12-02 15:44:58,223 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 [] [2023-12-02 15:44:58,564 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 15:44:58,564 INFO L93 Difference]: Finished difference Result 210 states and 260 transitions. [2023-12-02 15:44:58,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-02 15:44:58,566 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.6) internal successors, (48), 5 states have internal predecessors, (48), 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 48 [2023-12-02 15:44:58,566 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 15:44:58,568 INFO L225 Difference]: With dead ends: 210 [2023-12-02 15:44:58,568 INFO L226 Difference]: Without dead ends: 207 [2023-12-02 15:44:58,568 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-12-02 15:44:58,569 INFO L413 NwaCegarLoop]: 177 mSDtfsCounter, 52 mSDsluCounter, 485 mSDsCounter, 0 mSdLazyCounter, 132 mSolverCounterSat, 2 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 662 SdHoareTripleChecker+Invalid, 135 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 132 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.5s IncrementalHoareTripleChecker+Time [2023-12-02 15:44:58,570 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [52 Valid, 662 Invalid, 135 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 132 Invalid, 1 Unknown, 0 Unchecked, 7.5s Time] [2023-12-02 15:44:58,571 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 207 states. [2023-12-02 15:44:58,579 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 207 to 169. [2023-12-02 15:44:58,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 169 states, 163 states have (on average 1.2331288343558282) internal successors, (201), 164 states have internal predecessors, (201), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-12-02 15:44:58,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169 states to 169 states and 207 transitions. [2023-12-02 15:44:58,582 INFO L78 Accepts]: Start accepts. Automaton has 169 states and 207 transitions. Word has length 48 [2023-12-02 15:44:58,582 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 15:44:58,582 INFO L495 AbstractCegarLoop]: Abstraction has 169 states and 207 transitions. [2023-12-02 15:44:58,583 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.6) internal successors, (48), 5 states have internal predecessors, (48), 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) [2023-12-02 15:44:58,583 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states and 207 transitions. [2023-12-02 15:44:58,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2023-12-02 15:44:58,586 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 15:44:58,586 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] [2023-12-02 15:44:58,593 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87a9aa1f-2af0-408c-bce7-371829a990a5/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Ended with exit code 0 [2023-12-02 15:44:58,796 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87a9aa1f-2af0-408c-bce7-371829a990a5/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 15:44:58,797 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK] === [2023-12-02 15:44:58,797 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 15:44:58,798 INFO L85 PathProgramCache]: Analyzing trace with hash -941870148, now seen corresponding path program 1 times [2023-12-02 15:44:58,799 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 15:44:58,799 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1587681058] [2023-12-02 15:44:58,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:44:58,799 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 [2023-12-02 15:44:58,800 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87a9aa1f-2af0-408c-bce7-371829a990a5/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 15:44:58,801 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87a9aa1f-2af0-408c-bce7-371829a990a5/bin/utaipan-verify-nQ1chXbOIh/mathsat -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) [2023-12-02 15:44:58,802 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87a9aa1f-2af0-408c-bce7-371829a990a5/bin/utaipan-verify-nQ1chXbOIh/mathsat -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 [2023-12-02 15:44:59,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:44:59,234 INFO L262 TraceCheckSpWp]: Trace formula consists of 350 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-02 15:44:59,238 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 15:44:59,272 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 15:44:59,273 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 15:44:59,273 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 15:44:59,273 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1587681058] [2023-12-02 15:44:59,273 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1587681058] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 15:44:59,274 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 15:44:59,274 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-02 15:44:59,274 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [614857931] [2023-12-02 15:44:59,274 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 15:44:59,275 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 15:44:59,275 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 15:44:59,276 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 15:44:59,276 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-02 15:44:59,277 INFO L87 Difference]: Start difference. First operand 169 states and 207 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) [2023-12-02 15:44:59,430 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 15:44:59,430 INFO L93 Difference]: Finished difference Result 173 states and 203 transitions. [2023-12-02 15:44:59,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-02 15:44:59,432 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 [2023-12-02 15:44:59,433 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 15:44:59,434 INFO L225 Difference]: With dead ends: 173 [2023-12-02 15:44:59,434 INFO L226 Difference]: Without dead ends: 173 [2023-12-02 15:44:59,434 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 [2023-12-02 15:44:59,435 INFO L413 NwaCegarLoop]: 164 mSDtfsCounter, 43 mSDsluCounter, 310 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 474 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-02 15:44:59,435 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [43 Valid, 474 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-02 15:44:59,437 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173 states. [2023-12-02 15:44:59,440 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173 to 172. [2023-12-02 15:44:59,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 172 states, 166 states have (on average 1.180722891566265) internal successors, (196), 167 states have internal predecessors, (196), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-12-02 15:44:59,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172 states to 172 states and 202 transitions. [2023-12-02 15:44:59,443 INFO L78 Accepts]: Start accepts. Automaton has 172 states and 202 transitions. Word has length 65 [2023-12-02 15:44:59,443 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 15:44:59,443 INFO L495 AbstractCegarLoop]: Abstraction has 172 states and 202 transitions. [2023-12-02 15:44:59,443 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) [2023-12-02 15:44:59,444 INFO L276 IsEmpty]: Start isEmpty. Operand 172 states and 202 transitions. [2023-12-02 15:44:59,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2023-12-02 15:44:59,445 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 15:44:59,446 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] [2023-12-02 15:44:59,454 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87a9aa1f-2af0-408c-bce7-371829a990a5/bin/utaipan-verify-nQ1chXbOIh/mathsat -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 [2023-12-02 15:44:59,646 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87a9aa1f-2af0-408c-bce7-371829a990a5/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 15:44:59,646 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK] === [2023-12-02 15:44:59,647 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 15:44:59,647 INFO L85 PathProgramCache]: Analyzing trace with hash -1119088084, now seen corresponding path program 1 times [2023-12-02 15:44:59,648 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 15:44:59,648 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1315973436] [2023-12-02 15:44:59,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:44:59,648 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 [2023-12-02 15:44:59,648 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87a9aa1f-2af0-408c-bce7-371829a990a5/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 15:44:59,649 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87a9aa1f-2af0-408c-bce7-371829a990a5/bin/utaipan-verify-nQ1chXbOIh/mathsat -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) [2023-12-02 15:44:59,650 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87a9aa1f-2af0-408c-bce7-371829a990a5/bin/utaipan-verify-nQ1chXbOIh/mathsat -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 [2023-12-02 15:45:00,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:45:00,030 INFO L262 TraceCheckSpWp]: Trace formula consists of 342 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-02 15:45:00,035 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 15:45:00,130 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 15:45:00,131 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 15:45:00,131 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 15:45:00,131 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1315973436] [2023-12-02 15:45:00,131 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1315973436] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 15:45:00,131 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 15:45:00,132 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-02 15:45:00,132 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1314907788] [2023-12-02 15:45:00,132 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 15:45:00,132 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-02 15:45:00,133 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 15:45:00,133 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-02 15:45:00,133 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-02 15:45:00,133 INFO L87 Difference]: Start difference. First operand 172 states and 202 transitions. Second operand has 5 states, 5 states have (on average 13.0) internal successors, (65), 5 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) [2023-12-02 15:45:00,265 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 15:45:00,266 INFO L93 Difference]: Finished difference Result 166 states and 192 transitions. [2023-12-02 15:45:00,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-02 15:45:00,268 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 5 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 [2023-12-02 15:45:00,268 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 15:45:00,269 INFO L225 Difference]: With dead ends: 166 [2023-12-02 15:45:00,269 INFO L226 Difference]: Without dead ends: 166 [2023-12-02 15:45:00,269 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-02 15:45:00,270 INFO L413 NwaCegarLoop]: 165 mSDtfsCounter, 12 mSDsluCounter, 312 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 477 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-02 15:45:00,271 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 477 Invalid, 65 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 59 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-02 15:45:00,272 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2023-12-02 15:45:00,275 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 166. [2023-12-02 15:45:00,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 166 states, 160 states have (on average 1.1625) internal successors, (186), 161 states have internal predecessors, (186), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-12-02 15:45:00,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 192 transitions. [2023-12-02 15:45:00,277 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 192 transitions. Word has length 65 [2023-12-02 15:45:00,277 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 15:45:00,277 INFO L495 AbstractCegarLoop]: Abstraction has 166 states and 192 transitions. [2023-12-02 15:45:00,278 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 5 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) [2023-12-02 15:45:00,278 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 192 transitions. [2023-12-02 15:45:00,279 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2023-12-02 15:45:00,279 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 15:45:00,280 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] [2023-12-02 15:45:00,287 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87a9aa1f-2af0-408c-bce7-371829a990a5/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Ended with exit code 0 [2023-12-02 15:45:00,484 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87a9aa1f-2af0-408c-bce7-371829a990a5/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 15:45:00,485 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK] === [2023-12-02 15:45:00,485 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 15:45:00,485 INFO L85 PathProgramCache]: Analyzing trace with hash -1746345998, now seen corresponding path program 1 times [2023-12-02 15:45:00,486 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 15:45:00,486 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1663265897] [2023-12-02 15:45:00,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:45:00,487 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 [2023-12-02 15:45:00,487 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87a9aa1f-2af0-408c-bce7-371829a990a5/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 15:45:00,488 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87a9aa1f-2af0-408c-bce7-371829a990a5/bin/utaipan-verify-nQ1chXbOIh/mathsat -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) [2023-12-02 15:45:00,498 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87a9aa1f-2af0-408c-bce7-371829a990a5/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2023-12-02 15:45:00,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:45:00,882 INFO L262 TraceCheckSpWp]: Trace formula consists of 345 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-02 15:45:00,885 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 15:45:01,233 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 15:45:01,233 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 15:45:01,233 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 15:45:01,233 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1663265897] [2023-12-02 15:45:01,234 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1663265897] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 15:45:01,234 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 15:45:01,234 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-02 15:45:01,234 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1409861710] [2023-12-02 15:45:01,235 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 15:45:01,235 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 15:45:01,235 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 15:45:01,236 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 15:45:01,236 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 15:45:01,237 INFO L87 Difference]: Start difference. First operand 166 states and 192 transitions. Second operand has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 2 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) [2023-12-02 15:45:01,838 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 15:45:01,838 INFO L93 Difference]: Finished difference Result 256 states and 286 transitions. [2023-12-02 15:45:01,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 15:45:01,839 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 2 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 [2023-12-02 15:45:01,839 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 15:45:01,841 INFO L225 Difference]: With dead ends: 256 [2023-12-02 15:45:01,841 INFO L226 Difference]: Without dead ends: 256 [2023-12-02 15:45:01,841 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 [2023-12-02 15:45:01,842 INFO L413 NwaCegarLoop]: 222 mSDtfsCounter, 58 mSDsluCounter, 159 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 60 SdHoareTripleChecker+Valid, 381 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-02 15:45:01,842 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [60 Valid, 381 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-02 15:45:01,843 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 256 states. [2023-12-02 15:45:01,850 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 256 to 250. [2023-12-02 15:45:01,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 250 states, 244 states have (on average 1.1311475409836065) internal successors, (276), 245 states have internal predecessors, (276), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-12-02 15:45:01,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 250 states to 250 states and 282 transitions. [2023-12-02 15:45:01,853 INFO L78 Accepts]: Start accepts. Automaton has 250 states and 282 transitions. Word has length 65 [2023-12-02 15:45:01,853 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 15:45:01,853 INFO L495 AbstractCegarLoop]: Abstraction has 250 states and 282 transitions. [2023-12-02 15:45:01,853 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 2 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) [2023-12-02 15:45:01,853 INFO L276 IsEmpty]: Start isEmpty. Operand 250 states and 282 transitions. [2023-12-02 15:45:01,854 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2023-12-02 15:45:01,854 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 15:45:01,855 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-02 15:45:01,863 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87a9aa1f-2af0-408c-bce7-371829a990a5/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Ended with exit code 0 [2023-12-02 15:45:02,060 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87a9aa1f-2af0-408c-bce7-371829a990a5/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 15:45:02,060 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK] === [2023-12-02 15:45:02,061 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 15:45:02,061 INFO L85 PathProgramCache]: Analyzing trace with hash -628240215, now seen corresponding path program 1 times [2023-12-02 15:45:02,061 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 15:45:02,061 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [494771346] [2023-12-02 15:45:02,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:45:02,062 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 [2023-12-02 15:45:02,062 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87a9aa1f-2af0-408c-bce7-371829a990a5/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 15:45:02,063 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87a9aa1f-2af0-408c-bce7-371829a990a5/bin/utaipan-verify-nQ1chXbOIh/mathsat -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) [2023-12-02 15:45:02,064 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87a9aa1f-2af0-408c-bce7-371829a990a5/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2023-12-02 15:45:02,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:45:02,543 INFO L262 TraceCheckSpWp]: Trace formula consists of 476 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-02 15:45:02,547 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 15:45:02,581 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 15:45:02,581 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 15:45:02,582 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 15:45:02,582 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [494771346] [2023-12-02 15:45:02,582 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [494771346] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 15:45:02,582 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 15:45:02,582 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-02 15:45:02,582 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [862767484] [2023-12-02 15:45:02,582 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 15:45:02,583 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 15:45:02,583 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 15:45:02,584 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 15:45:02,584 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-02 15:45:02,584 INFO L87 Difference]: Start difference. First operand 250 states and 282 transitions. Second operand has 4 states, 3 states have (on average 24.666666666666668) internal successors, (74), 4 states have internal predecessors, (74), 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) [2023-12-02 15:45:02,676 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 15:45:02,676 INFO L93 Difference]: Finished difference Result 252 states and 285 transitions. [2023-12-02 15:45:02,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-02 15:45:02,677 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 24.666666666666668) internal successors, (74), 4 states have internal predecessors, (74), 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 78 [2023-12-02 15:45:02,677 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 15:45:02,680 INFO L225 Difference]: With dead ends: 252 [2023-12-02 15:45:02,680 INFO L226 Difference]: Without dead ends: 252 [2023-12-02 15:45:02,681 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 75 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-02 15:45:02,681 INFO L413 NwaCegarLoop]: 179 mSDtfsCounter, 1 mSDsluCounter, 354 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 533 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-02 15:45:02,681 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 533 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-02 15:45:02,682 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 252 states. [2023-12-02 15:45:02,688 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 252 to 252. [2023-12-02 15:45:02,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 252 states, 245 states have (on average 1.1346938775510205) internal successors, (278), 247 states have internal predecessors, (278), 3 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2023-12-02 15:45:02,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 252 states to 252 states and 285 transitions. [2023-12-02 15:45:02,690 INFO L78 Accepts]: Start accepts. Automaton has 252 states and 285 transitions. Word has length 78 [2023-12-02 15:45:02,690 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 15:45:02,690 INFO L495 AbstractCegarLoop]: Abstraction has 252 states and 285 transitions. [2023-12-02 15:45:02,690 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 24.666666666666668) internal successors, (74), 4 states have internal predecessors, (74), 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) [2023-12-02 15:45:02,691 INFO L276 IsEmpty]: Start isEmpty. Operand 252 states and 285 transitions. [2023-12-02 15:45:02,691 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2023-12-02 15:45:02,691 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 15:45:02,692 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] [2023-12-02 15:45:02,699 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87a9aa1f-2af0-408c-bce7-371829a990a5/bin/utaipan-verify-nQ1chXbOIh/mathsat -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)] Ended with exit code 0 [2023-12-02 15:45:02,892 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87a9aa1f-2af0-408c-bce7-371829a990a5/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 15:45:02,892 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK] === [2023-12-02 15:45:02,893 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 15:45:02,893 INFO L85 PathProgramCache]: Analyzing trace with hash -1386620087, now seen corresponding path program 1 times [2023-12-02 15:45:02,894 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 15:45:02,894 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1666039118] [2023-12-02 15:45:02,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:45:02,894 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 [2023-12-02 15:45:02,894 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87a9aa1f-2af0-408c-bce7-371829a990a5/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 15:45:02,895 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87a9aa1f-2af0-408c-bce7-371829a990a5/bin/utaipan-verify-nQ1chXbOIh/mathsat -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) [2023-12-02 15:45:02,896 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87a9aa1f-2af0-408c-bce7-371829a990a5/bin/utaipan-verify-nQ1chXbOIh/mathsat -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 [2023-12-02 15:45:03,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:45:03,379 INFO L262 TraceCheckSpWp]: Trace formula consists of 498 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-02 15:45:03,381 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 15:45:03,418 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-12-02 15:45:03,418 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 15:45:03,517 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-02 15:45:03,517 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 15:45:03,518 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1666039118] [2023-12-02 15:45:03,518 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1666039118] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 15:45:03,518 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1512735876] [2023-12-02 15:45:03,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:45:03,518 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-02 15:45:03,519 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87a9aa1f-2af0-408c-bce7-371829a990a5/bin/utaipan-verify-nQ1chXbOIh/cvc4 [2023-12-02 15:45:03,520 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87a9aa1f-2af0-408c-bce7-371829a990a5/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-02 15:45:03,522 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87a9aa1f-2af0-408c-bce7-371829a990a5/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (11)] Waiting until timeout for monitored process [2023-12-02 15:45:04,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:45:04,338 INFO L262 TraceCheckSpWp]: Trace formula consists of 498 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-02 15:45:04,343 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 15:45:04,359 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-12-02 15:45:04,359 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 15:45:04,404 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-02 15:45:04,404 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1512735876] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 15:45:04,404 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [818503115] [2023-12-02 15:45:04,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:45:04,405 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 15:45:04,405 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87a9aa1f-2af0-408c-bce7-371829a990a5/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 15:45:04,406 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87a9aa1f-2af0-408c-bce7-371829a990a5/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 15:45:04,408 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87a9aa1f-2af0-408c-bce7-371829a990a5/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-12-02 15:45:04,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:45:04,882 INFO L262 TraceCheckSpWp]: Trace formula consists of 498 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-02 15:45:04,885 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 15:45:04,902 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-02 15:45:04,902 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 15:45:05,000 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-02 15:45:05,001 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [818503115] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 15:45:05,001 INFO L185 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2023-12-02 15:45:05,001 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5, 5, 5, 5] total 11 [2023-12-02 15:45:05,002 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1378049967] [2023-12-02 15:45:05,002 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2023-12-02 15:45:05,003 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-12-02 15:45:05,003 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 15:45:05,013 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-12-02 15:45:05,013 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2023-12-02 15:45:05,014 INFO L87 Difference]: Start difference. First operand 252 states and 285 transitions. Second operand has 11 states, 8 states have (on average 10.875) internal successors, (87), 11 states have internal predecessors, (87), 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) [2023-12-02 15:45:05,491 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 15:45:05,491 INFO L93 Difference]: Finished difference Result 264 states and 304 transitions. [2023-12-02 15:45:05,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-02 15:45:05,492 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 8 states have (on average 10.875) internal successors, (87), 11 states have internal predecessors, (87), 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 80 [2023-12-02 15:45:05,493 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 15:45:05,495 INFO L225 Difference]: With dead ends: 264 [2023-12-02 15:45:05,495 INFO L226 Difference]: Without dead ends: 264 [2023-12-02 15:45:05,496 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 485 GetRequests, 465 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=156, Invalid=306, Unknown=0, NotChecked=0, Total=462 [2023-12-02 15:45:05,497 INFO L413 NwaCegarLoop]: 178 mSDtfsCounter, 17 mSDsluCounter, 867 mSDsCounter, 0 mSdLazyCounter, 79 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 1045 SdHoareTripleChecker+Invalid, 93 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 79 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-02 15:45:05,497 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 1045 Invalid, 93 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 79 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-02 15:45:05,498 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 264 states. [2023-12-02 15:45:05,505 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 264 to 262. [2023-12-02 15:45:05,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 262 states, 254 states have (on average 1.1614173228346456) internal successors, (295), 256 states have internal predecessors, (295), 3 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2023-12-02 15:45:05,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 262 states to 262 states and 302 transitions. [2023-12-02 15:45:05,509 INFO L78 Accepts]: Start accepts. Automaton has 262 states and 302 transitions. Word has length 80 [2023-12-02 15:45:05,509 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 15:45:05,509 INFO L495 AbstractCegarLoop]: Abstraction has 262 states and 302 transitions. [2023-12-02 15:45:05,510 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 8 states have (on average 10.875) internal successors, (87), 11 states have internal predecessors, (87), 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) [2023-12-02 15:45:05,510 INFO L276 IsEmpty]: Start isEmpty. Operand 262 states and 302 transitions. [2023-12-02 15:45:05,511 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2023-12-02 15:45:05,511 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 15:45:05,511 INFO L195 NwaCegarLoop]: trace histogram [8, 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] [2023-12-02 15:45:05,519 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87a9aa1f-2af0-408c-bce7-371829a990a5/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (11)] Ended with exit code 0 [2023-12-02 15:45:05,719 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87a9aa1f-2af0-408c-bce7-371829a990a5/bin/utaipan-verify-nQ1chXbOIh/mathsat -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 [2023-12-02 15:45:05,924 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87a9aa1f-2af0-408c-bce7-371829a990a5/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2023-12-02 15:45:06,112 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87a9aa1f-2af0-408c-bce7-371829a990a5/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87a9aa1f-2af0-408c-bce7-371829a990a5/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87a9aa1f-2af0-408c-bce7-371829a990a5/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 15:45:06,112 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK] === [2023-12-02 15:45:06,113 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 15:45:06,113 INFO L85 PathProgramCache]: Analyzing trace with hash 106493353, now seen corresponding path program 2 times [2023-12-02 15:45:06,113 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 15:45:06,113 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1956695351] [2023-12-02 15:45:06,114 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-02 15:45:06,114 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 [2023-12-02 15:45:06,114 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87a9aa1f-2af0-408c-bce7-371829a990a5/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 15:45:06,115 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87a9aa1f-2af0-408c-bce7-371829a990a5/bin/utaipan-verify-nQ1chXbOIh/mathsat -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) [2023-12-02 15:45:06,116 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87a9aa1f-2af0-408c-bce7-371829a990a5/bin/utaipan-verify-nQ1chXbOIh/mathsat -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 [2023-12-02 15:45:06,703 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-02 15:45:06,703 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-02 15:45:06,732 INFO L262 TraceCheckSpWp]: Trace formula consists of 564 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-02 15:45:06,752 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 15:45:06,840 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 29 proven. 10 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-12-02 15:45:06,840 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 15:45:07,104 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 2 proven. 36 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-12-02 15:45:07,104 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 15:45:07,104 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1956695351] [2023-12-02 15:45:07,104 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1956695351] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 15:45:07,104 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [2140255131] [2023-12-02 15:45:07,105 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-02 15:45:07,105 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-02 15:45:07,105 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87a9aa1f-2af0-408c-bce7-371829a990a5/bin/utaipan-verify-nQ1chXbOIh/cvc4 [2023-12-02 15:45:07,106 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87a9aa1f-2af0-408c-bce7-371829a990a5/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-02 15:45:07,107 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87a9aa1f-2af0-408c-bce7-371829a990a5/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (14)] Waiting until timeout for monitored process [2023-12-02 15:45:08,027 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-02 15:45:08,027 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-02 15:45:08,061 INFO L262 TraceCheckSpWp]: Trace formula consists of 564 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-02 15:45:08,066 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 15:45:08,841 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-02 15:45:08,842 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-02 15:45:08,843 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-02 15:45:08,845 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 33 [2023-12-02 15:45:08,952 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 15:45:08,953 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 58 treesize of output 26 [2023-12-02 15:45:09,004 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2023-12-02 15:45:09,005 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 15:45:09,005 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [2140255131] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 15:45:09,005 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-12-02 15:45:09,005 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [8, 8] total 19 [2023-12-02 15:45:09,005 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [742753345] [2023-12-02 15:45:09,005 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 15:45:09,005 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-02 15:45:09,006 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 15:45:09,006 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-02 15:45:09,006 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=265, Unknown=0, NotChecked=0, Total=342 [2023-12-02 15:45:09,006 INFO L87 Difference]: Start difference. First operand 262 states and 302 transitions. Second operand has 7 states, 7 states have (on average 10.428571428571429) internal successors, (73), 7 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) [2023-12-02 15:45:11,649 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 15:45:13,225 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 15:45:13,225 INFO L93 Difference]: Finished difference Result 336 states and 388 transitions. [2023-12-02 15:45:13,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-02 15:45:13,227 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.428571428571429) internal successors, (73), 7 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 86 [2023-12-02 15:45:13,227 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 15:45:13,229 INFO L225 Difference]: With dead ends: 336 [2023-12-02 15:45:13,229 INFO L226 Difference]: Without dead ends: 336 [2023-12-02 15:45:13,230 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 256 GetRequests, 238 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=84, Invalid=296, Unknown=0, NotChecked=0, Total=380 [2023-12-02 15:45:13,230 INFO L413 NwaCegarLoop]: 161 mSDtfsCounter, 543 mSDsluCounter, 284 mSDsCounter, 0 mSdLazyCounter, 113 mSolverCounterSat, 2 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 544 SdHoareTripleChecker+Valid, 445 SdHoareTripleChecker+Invalid, 116 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 113 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2023-12-02 15:45:13,231 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [544 Valid, 445 Invalid, 116 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 113 Invalid, 1 Unknown, 0 Unchecked, 4.2s Time] [2023-12-02 15:45:13,232 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 336 states. [2023-12-02 15:45:13,237 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 336 to 264. [2023-12-02 15:45:13,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 264 states, 256 states have (on average 1.16015625) internal successors, (297), 258 states have internal predecessors, (297), 3 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2023-12-02 15:45:13,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 264 states to 264 states and 304 transitions. [2023-12-02 15:45:13,240 INFO L78 Accepts]: Start accepts. Automaton has 264 states and 304 transitions. Word has length 86 [2023-12-02 15:45:13,240 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 15:45:13,240 INFO L495 AbstractCegarLoop]: Abstraction has 264 states and 304 transitions. [2023-12-02 15:45:13,240 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.428571428571429) internal successors, (73), 7 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) [2023-12-02 15:45:13,241 INFO L276 IsEmpty]: Start isEmpty. Operand 264 states and 304 transitions. [2023-12-02 15:45:13,242 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2023-12-02 15:45:13,242 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 15:45:13,243 INFO L195 NwaCegarLoop]: trace histogram [8, 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] [2023-12-02 15:45:13,249 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87a9aa1f-2af0-408c-bce7-371829a990a5/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (14)] Ended with exit code 0 [2023-12-02 15:45:13,452 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87a9aa1f-2af0-408c-bce7-371829a990a5/bin/utaipan-verify-nQ1chXbOIh/mathsat -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)] Ended with exit code 0 [2023-12-02 15:45:13,643 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87a9aa1f-2af0-408c-bce7-371829a990a5/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87a9aa1f-2af0-408c-bce7-371829a990a5/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 15:45:13,643 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK] === [2023-12-02 15:45:13,644 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 15:45:13,644 INFO L85 PathProgramCache]: Analyzing trace with hash 702262103, now seen corresponding path program 1 times [2023-12-02 15:45:13,644 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 15:45:13,644 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [460484195] [2023-12-02 15:45:13,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:45:13,645 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 [2023-12-02 15:45:13,645 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87a9aa1f-2af0-408c-bce7-371829a990a5/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 15:45:13,646 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87a9aa1f-2af0-408c-bce7-371829a990a5/bin/utaipan-verify-nQ1chXbOIh/mathsat -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) [2023-12-02 15:45:13,646 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87a9aa1f-2af0-408c-bce7-371829a990a5/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2023-12-02 15:45:14,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:45:14,160 INFO L262 TraceCheckSpWp]: Trace formula consists of 616 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-02 15:45:14,163 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 15:45:14,241 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 29 proven. 10 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-12-02 15:45:14,241 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 15:45:14,467 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 2 proven. 36 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-12-02 15:45:14,468 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 15:45:14,468 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [460484195] [2023-12-02 15:45:14,468 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [460484195] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 15:45:14,468 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1253032270] [2023-12-02 15:45:14,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:45:14,469 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-02 15:45:14,469 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87a9aa1f-2af0-408c-bce7-371829a990a5/bin/utaipan-verify-nQ1chXbOIh/cvc4 [2023-12-02 15:45:14,470 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87a9aa1f-2af0-408c-bce7-371829a990a5/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-02 15:45:14,471 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87a9aa1f-2af0-408c-bce7-371829a990a5/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (16)] Waiting until timeout for monitored process [2023-12-02 15:45:15,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:45:15,155 INFO L262 TraceCheckSpWp]: Trace formula consists of 616 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-02 15:45:15,158 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 15:45:15,457 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2023-12-02 15:45:15,457 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 15:45:15,458 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1253032270] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 15:45:15,458 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-12-02 15:45:15,458 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [8, 8] total 16 [2023-12-02 15:45:15,458 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1646917311] [2023-12-02 15:45:15,458 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 15:45:15,459 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 15:45:15,459 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 15:45:15,460 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 15:45:15,460 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2023-12-02 15:45:15,461 INFO L87 Difference]: Start difference. First operand 264 states and 304 transitions. Second operand has 4 states, 4 states have (on average 28.0) internal successors, (112), 4 states have internal predecessors, (112), 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) [2023-12-02 15:45:17,913 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 15:45:19,918 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 15:45:22,219 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.12s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 15:45:22,469 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 15:45:22,469 INFO L93 Difference]: Finished difference Result 216 states and 248 transitions. [2023-12-02 15:45:22,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-02 15:45:22,472 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 28.0) internal successors, (112), 4 states have internal predecessors, (112), 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 125 [2023-12-02 15:45:22,473 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 15:45:22,474 INFO L225 Difference]: With dead ends: 216 [2023-12-02 15:45:22,474 INFO L226 Difference]: Without dead ends: 216 [2023-12-02 15:45:22,474 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 374 GetRequests, 359 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=69, Invalid=203, Unknown=0, NotChecked=0, Total=272 [2023-12-02 15:45:22,475 INFO L413 NwaCegarLoop]: 178 mSDtfsCounter, 239 mSDsluCounter, 50 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 3 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 239 SdHoareTripleChecker+Valid, 228 SdHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 53 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.0s IncrementalHoareTripleChecker+Time [2023-12-02 15:45:22,475 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [239 Valid, 228 Invalid, 58 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 53 Invalid, 2 Unknown, 0 Unchecked, 7.0s Time] [2023-12-02 15:45:22,475 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 216 states. [2023-12-02 15:45:22,478 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 216 to 216. [2023-12-02 15:45:22,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 216 states, 208 states have (on average 1.1586538461538463) internal successors, (241), 210 states have internal predecessors, (241), 3 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2023-12-02 15:45:22,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216 states to 216 states and 248 transitions. [2023-12-02 15:45:22,480 INFO L78 Accepts]: Start accepts. Automaton has 216 states and 248 transitions. Word has length 125 [2023-12-02 15:45:22,480 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 15:45:22,480 INFO L495 AbstractCegarLoop]: Abstraction has 216 states and 248 transitions. [2023-12-02 15:45:22,480 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 28.0) internal successors, (112), 4 states have internal predecessors, (112), 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) [2023-12-02 15:45:22,480 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states and 248 transitions. [2023-12-02 15:45:22,481 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2023-12-02 15:45:22,482 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 15:45:22,482 INFO L195 NwaCegarLoop]: trace histogram [8, 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, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 15:45:22,486 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87a9aa1f-2af0-408c-bce7-371829a990a5/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (16)] Ended with exit code 0 [2023-12-02 15:45:22,690 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87a9aa1f-2af0-408c-bce7-371829a990a5/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Ended with exit code 0 [2023-12-02 15:45:22,882 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87a9aa1f-2af0-408c-bce7-371829a990a5/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt,15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87a9aa1f-2af0-408c-bce7-371829a990a5/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 15:45:22,882 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK] === [2023-12-02 15:45:22,883 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 15:45:22,883 INFO L85 PathProgramCache]: Analyzing trace with hash 2062604577, now seen corresponding path program 1 times [2023-12-02 15:45:22,884 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 15:45:22,884 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1066004121] [2023-12-02 15:45:22,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:45:22,884 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 15:45:22,884 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87a9aa1f-2af0-408c-bce7-371829a990a5/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 15:45:22,885 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87a9aa1f-2af0-408c-bce7-371829a990a5/bin/utaipan-verify-nQ1chXbOIh/mathsat -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) [2023-12-02 15:45:22,885 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87a9aa1f-2af0-408c-bce7-371829a990a5/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2023-12-02 15:45:23,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:45:23,427 INFO L262 TraceCheckSpWp]: Trace formula consists of 632 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-02 15:45:23,430 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 15:45:23,506 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 29 proven. 10 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-12-02 15:45:23,507 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 15:45:23,738 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 2 proven. 36 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-12-02 15:45:23,738 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 15:45:23,738 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1066004121] [2023-12-02 15:45:23,738 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1066004121] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 15:45:23,739 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1889526664] [2023-12-02 15:45:23,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:45:23,739 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-02 15:45:23,739 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87a9aa1f-2af0-408c-bce7-371829a990a5/bin/utaipan-verify-nQ1chXbOIh/cvc4 [2023-12-02 15:45:23,740 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87a9aa1f-2af0-408c-bce7-371829a990a5/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-02 15:45:23,741 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87a9aa1f-2af0-408c-bce7-371829a990a5/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (18)] Waiting until timeout for monitored process [2023-12-02 15:45:24,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:45:24,607 INFO L262 TraceCheckSpWp]: Trace formula consists of 632 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-02 15:45:24,617 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 15:45:24,639 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 29 proven. 10 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-12-02 15:45:24,640 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 15:45:24,718 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 2 proven. 36 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-12-02 15:45:24,718 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1889526664] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 15:45:24,718 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1003577591] [2023-12-02 15:45:24,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:45:24,718 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 15:45:24,718 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87a9aa1f-2af0-408c-bce7-371829a990a5/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 15:45:24,719 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87a9aa1f-2af0-408c-bce7-371829a990a5/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 15:45:24,720 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87a9aa1f-2af0-408c-bce7-371829a990a5/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2023-12-02 15:45:25,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:45:25,330 INFO L262 TraceCheckSpWp]: Trace formula consists of 632 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-02 15:45:25,333 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 15:45:25,412 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 29 proven. 10 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-12-02 15:45:25,412 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 15:45:25,698 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 2 proven. 36 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-12-02 15:45:25,698 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1003577591] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 15:45:25,698 INFO L185 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2023-12-02 15:45:25,698 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8, 8, 8, 8] total 20 [2023-12-02 15:45:25,699 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [8623873] [2023-12-02 15:45:25,699 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2023-12-02 15:45:25,700 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-12-02 15:45:25,700 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 15:45:25,701 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-12-02 15:45:25,701 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=132, Invalid=248, Unknown=0, NotChecked=0, Total=380 [2023-12-02 15:45:25,702 INFO L87 Difference]: Start difference. First operand 216 states and 248 transitions. Second operand has 20 states, 17 states have (on average 8.352941176470589) internal successors, (142), 20 states have internal predecessors, (142), 2 states have call successors, (3), 2 states have call predecessors, (3), 5 states have return successors, (5), 1 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-02 15:45:26,733 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 15:45:26,733 INFO L93 Difference]: Finished difference Result 229 states and 265 transitions. [2023-12-02 15:45:26,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-12-02 15:45:26,734 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 17 states have (on average 8.352941176470589) internal successors, (142), 20 states have internal predecessors, (142), 2 states have call successors, (3), 2 states have call predecessors, (3), 5 states have return successors, (5), 1 states have call predecessors, (5), 2 states have call successors, (5) Word has length 133 [2023-12-02 15:45:26,734 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 15:45:26,736 INFO L225 Difference]: With dead ends: 229 [2023-12-02 15:45:26,736 INFO L226 Difference]: Without dead ends: 226 [2023-12-02 15:45:26,737 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 807 GetRequests, 774 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 183 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=416, Invalid=774, Unknown=0, NotChecked=0, Total=1190 [2023-12-02 15:45:26,738 INFO L413 NwaCegarLoop]: 177 mSDtfsCounter, 14 mSDsluCounter, 1390 mSDsCounter, 0 mSdLazyCounter, 247 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 1567 SdHoareTripleChecker+Invalid, 275 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 247 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-02 15:45:26,738 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 1567 Invalid, 275 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 247 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-02 15:45:26,739 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 226 states. [2023-12-02 15:45:26,744 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 226 to 223. [2023-12-02 15:45:26,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 223 states, 215 states have (on average 1.1534883720930234) internal successors, (248), 217 states have internal predecessors, (248), 3 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2023-12-02 15:45:26,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 223 states to 223 states and 255 transitions. [2023-12-02 15:45:26,747 INFO L78 Accepts]: Start accepts. Automaton has 223 states and 255 transitions. Word has length 133 [2023-12-02 15:45:26,747 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 15:45:26,747 INFO L495 AbstractCegarLoop]: Abstraction has 223 states and 255 transitions. [2023-12-02 15:45:26,747 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 17 states have (on average 8.352941176470589) internal successors, (142), 20 states have internal predecessors, (142), 2 states have call successors, (3), 2 states have call predecessors, (3), 5 states have return successors, (5), 1 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-02 15:45:26,747 INFO L276 IsEmpty]: Start isEmpty. Operand 223 states and 255 transitions. [2023-12-02 15:45:26,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2023-12-02 15:45:26,749 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 15:45:26,749 INFO L195 NwaCegarLoop]: trace histogram [15, 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, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 15:45:26,758 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87a9aa1f-2af0-408c-bce7-371829a990a5/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2023-12-02 15:45:26,962 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87a9aa1f-2af0-408c-bce7-371829a990a5/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2023-12-02 15:45:27,157 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87a9aa1f-2af0-408c-bce7-371829a990a5/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (18)] Ended with exit code 0 [2023-12-02 15:45:27,350 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87a9aa1f-2af0-408c-bce7-371829a990a5/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87a9aa1f-2af0-408c-bce7-371829a990a5/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87a9aa1f-2af0-408c-bce7-371829a990a5/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt [2023-12-02 15:45:27,350 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK] === [2023-12-02 15:45:27,351 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 15:45:27,351 INFO L85 PathProgramCache]: Analyzing trace with hash -1324466201, now seen corresponding path program 2 times [2023-12-02 15:45:27,351 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 15:45:27,351 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1658032286] [2023-12-02 15:45:27,351 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-02 15:45:27,352 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 15:45:27,352 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87a9aa1f-2af0-408c-bce7-371829a990a5/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 15:45:27,352 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87a9aa1f-2af0-408c-bce7-371829a990a5/bin/utaipan-verify-nQ1chXbOIh/mathsat -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) [2023-12-02 15:45:27,357 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87a9aa1f-2af0-408c-bce7-371829a990a5/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2023-12-02 15:45:28,019 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-02 15:45:28,019 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-02 15:45:28,050 INFO L262 TraceCheckSpWp]: Trace formula consists of 709 conjuncts, 13 conjunts are in the unsatisfiable core [2023-12-02 15:45:28,054 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 15:45:28,280 INFO L134 CoverageAnalysis]: Checked inductivity of 140 backedges. 70 proven. 55 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-12-02 15:45:28,280 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 15:45:28,980 INFO L134 CoverageAnalysis]: Checked inductivity of 140 backedges. 2 proven. 122 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-12-02 15:45:28,980 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 15:45:28,980 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1658032286] [2023-12-02 15:45:28,980 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1658032286] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 15:45:28,981 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [748919713] [2023-12-02 15:45:28,981 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-02 15:45:28,981 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-02 15:45:28,981 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87a9aa1f-2af0-408c-bce7-371829a990a5/bin/utaipan-verify-nQ1chXbOIh/cvc4 [2023-12-02 15:45:28,982 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87a9aa1f-2af0-408c-bce7-371829a990a5/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-02 15:45:28,983 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87a9aa1f-2af0-408c-bce7-371829a990a5/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (21)] Waiting until timeout for monitored process [2023-12-02 15:45:30,989 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-02 15:45:30,989 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-02 15:45:31,003 INFO L262 TraceCheckSpWp]: Trace formula consists of 709 conjuncts, 13 conjunts are in the unsatisfiable core [2023-12-02 15:45:31,005 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 15:45:31,044 INFO L134 CoverageAnalysis]: Checked inductivity of 140 backedges. 70 proven. 55 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-12-02 15:45:31,044 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 15:45:31,200 INFO L134 CoverageAnalysis]: Checked inductivity of 140 backedges. 2 proven. 122 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-12-02 15:45:31,201 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [748919713] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 15:45:31,201 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [23367039] [2023-12-02 15:45:31,201 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-02 15:45:31,201 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 15:45:31,201 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87a9aa1f-2af0-408c-bce7-371829a990a5/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 15:45:31,202 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87a9aa1f-2af0-408c-bce7-371829a990a5/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 15:45:31,204 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87a9aa1f-2af0-408c-bce7-371829a990a5/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2023-12-02 15:45:31,919 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-02 15:45:31,919 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-02 15:45:31,942 INFO L262 TraceCheckSpWp]: Trace formula consists of 709 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-02 15:45:31,945 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 15:45:32,047 INFO L134 CoverageAnalysis]: Checked inductivity of 140 backedges. 69 proven. 15 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2023-12-02 15:45:32,047 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 15:45:32,598 INFO L134 CoverageAnalysis]: Checked inductivity of 140 backedges. 69 proven. 15 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2023-12-02 15:45:32,599 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [23367039] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 15:45:32,599 INFO L185 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2023-12-02 15:45:32,599 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 14, 14, 9, 9] total 35 [2023-12-02 15:45:32,599 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1782175012] [2023-12-02 15:45:32,600 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2023-12-02 15:45:32,600 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2023-12-02 15:45:32,600 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 15:45:32,601 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2023-12-02 15:45:32,602 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=328, Invalid=862, Unknown=0, NotChecked=0, Total=1190 [2023-12-02 15:45:32,602 INFO L87 Difference]: Start difference. First operand 223 states and 255 transitions. Second operand has 35 states, 31 states have (on average 5.096774193548387) internal successors, (158), 35 states have internal predecessors, (158), 2 states have call successors, (4), 2 states have call predecessors, (4), 6 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-12-02 15:45:36,617 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 15:45:36,617 INFO L93 Difference]: Finished difference Result 259 states and 312 transitions. [2023-12-02 15:45:36,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2023-12-02 15:45:36,618 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 31 states have (on average 5.096774193548387) internal successors, (158), 35 states have internal predecessors, (158), 2 states have call successors, (4), 2 states have call predecessors, (4), 6 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 140 [2023-12-02 15:45:36,618 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 15:45:36,620 INFO L225 Difference]: With dead ends: 259 [2023-12-02 15:45:36,620 INFO L226 Difference]: Without dead ends: 256 [2023-12-02 15:45:36,623 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 885 GetRequests, 801 SyntacticMatches, 0 SemanticMatches, 84 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1596 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=1869, Invalid=5441, Unknown=0, NotChecked=0, Total=7310 [2023-12-02 15:45:36,623 INFO L413 NwaCegarLoop]: 177 mSDtfsCounter, 59 mSDsluCounter, 3448 mSDsCounter, 0 mSdLazyCounter, 831 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 59 SdHoareTripleChecker+Valid, 3625 SdHoareTripleChecker+Invalid, 867 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 831 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2023-12-02 15:45:36,624 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [59 Valid, 3625 Invalid, 867 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 831 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2023-12-02 15:45:36,624 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 256 states. [2023-12-02 15:45:36,631 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 256 to 247. [2023-12-02 15:45:36,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 247 states, 239 states have (on average 1.1841004184100419) internal successors, (283), 241 states have internal predecessors, (283), 3 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2023-12-02 15:45:36,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 247 states to 247 states and 290 transitions. [2023-12-02 15:45:36,633 INFO L78 Accepts]: Start accepts. Automaton has 247 states and 290 transitions. Word has length 140 [2023-12-02 15:45:36,633 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 15:45:36,634 INFO L495 AbstractCegarLoop]: Abstraction has 247 states and 290 transitions. [2023-12-02 15:45:36,634 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 31 states have (on average 5.096774193548387) internal successors, (158), 35 states have internal predecessors, (158), 2 states have call successors, (4), 2 states have call predecessors, (4), 6 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-12-02 15:45:36,634 INFO L276 IsEmpty]: Start isEmpty. Operand 247 states and 290 transitions. [2023-12-02 15:45:36,636 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2023-12-02 15:45:36,636 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 15:45:36,636 INFO L195 NwaCegarLoop]: trace histogram [39, 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, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 15:45:36,647 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87a9aa1f-2af0-408c-bce7-371829a990a5/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (21)] Ended with exit code 0 [2023-12-02 15:45:36,854 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87a9aa1f-2af0-408c-bce7-371829a990a5/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Ended with exit code 0 [2023-12-02 15:45:37,046 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87a9aa1f-2af0-408c-bce7-371829a990a5/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (20)] Ended with exit code 0 [2023-12-02 15:45:37,237 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87a9aa1f-2af0-408c-bce7-371829a990a5/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt,22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87a9aa1f-2af0-408c-bce7-371829a990a5/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87a9aa1f-2af0-408c-bce7-371829a990a5/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 15:45:37,237 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK] === [2023-12-02 15:45:37,238 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 15:45:37,238 INFO L85 PathProgramCache]: Analyzing trace with hash 2071359207, now seen corresponding path program 3 times [2023-12-02 15:45:37,238 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 15:45:37,239 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [246637382] [2023-12-02 15:45:37,239 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-02 15:45:37,239 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 [2023-12-02 15:45:37,239 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87a9aa1f-2af0-408c-bce7-371829a990a5/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 15:45:37,240 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87a9aa1f-2af0-408c-bce7-371829a990a5/bin/utaipan-verify-nQ1chXbOIh/mathsat -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) [2023-12-02 15:45:37,240 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87a9aa1f-2af0-408c-bce7-371829a990a5/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (23)] Waiting until timeout for monitored process [2023-12-02 15:45:44,529 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2023-12-02 15:45:44,529 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-02 15:45:44,594 INFO L262 TraceCheckSpWp]: Trace formula consists of 907 conjuncts, 21 conjunts are in the unsatisfiable core [2023-12-02 15:45:44,598 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 15:45:45,028 INFO L134 CoverageAnalysis]: Checked inductivity of 824 backedges. 417 proven. 153 refuted. 0 times theorem prover too weak. 254 trivial. 0 not checked. [2023-12-02 15:45:45,028 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 15:45:46,992 INFO L134 CoverageAnalysis]: Checked inductivity of 824 backedges. 417 proven. 153 refuted. 0 times theorem prover too weak. 254 trivial. 0 not checked. [2023-12-02 15:45:46,993 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 15:45:46,993 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [246637382] [2023-12-02 15:45:46,993 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [246637382] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 15:45:46,993 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1727489738] [2023-12-02 15:45:46,993 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-02 15:45:46,993 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-02 15:45:46,993 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87a9aa1f-2af0-408c-bce7-371829a990a5/bin/utaipan-verify-nQ1chXbOIh/cvc4 [2023-12-02 15:45:46,994 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87a9aa1f-2af0-408c-bce7-371829a990a5/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-02 15:45:46,995 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87a9aa1f-2af0-408c-bce7-371829a990a5/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (24)] Waiting until timeout for monitored process [2023-12-02 15:49:51,907 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2023-12-02 15:49:51,907 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-02 15:49:52,142 INFO L262 TraceCheckSpWp]: Trace formula consists of 907 conjuncts, 21 conjunts are in the unsatisfiable core [2023-12-02 15:49:52,146 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 15:49:52,220 INFO L134 CoverageAnalysis]: Checked inductivity of 824 backedges. 417 proven. 153 refuted. 0 times theorem prover too weak. 254 trivial. 0 not checked. [2023-12-02 15:49:52,220 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 15:49:52,627 INFO L134 CoverageAnalysis]: Checked inductivity of 824 backedges. 417 proven. 153 refuted. 0 times theorem prover too weak. 254 trivial. 0 not checked. [2023-12-02 15:49:52,628 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1727489738] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 15:49:52,628 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [999551887] [2023-12-02 15:49:52,628 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-02 15:49:52,628 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 15:49:52,628 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87a9aa1f-2af0-408c-bce7-371829a990a5/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 15:49:52,629 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87a9aa1f-2af0-408c-bce7-371829a990a5/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 15:49:52,630 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87a9aa1f-2af0-408c-bce7-371829a990a5/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process