./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memcleanup.prp --file ../../sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test3-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (memcleanup) Using default analysis Version 9bd2c7ff 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_6eb11a2d-fe78-4a07-8129-132097b0257f/bin/utaipan-verify-t7M7D8N6sZ/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6eb11a2d-fe78-4a07-8129-132097b0257f/bin/utaipan-verify-t7M7D8N6sZ/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6eb11a2d-fe78-4a07-8129-132097b0257f/bin/utaipan-verify-t7M7D8N6sZ/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6eb11a2d-fe78-4a07-8129-132097b0257f/bin/utaipan-verify-t7M7D8N6sZ/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test3-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6eb11a2d-fe78-4a07-8129-132097b0257f/bin/utaipan-verify-t7M7D8N6sZ/config/svcomp-MemCleanup-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6eb11a2d-fe78-4a07-8129-132097b0257f/bin/utaipan-verify-t7M7D8N6sZ --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-memcleanup) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash f1f34940ecf685c2c1201858b264ccb53eb3034d3cb9952a1b49bb437c42dde1 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 05:19:06,348 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 05:19:06,416 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6eb11a2d-fe78-4a07-8129-132097b0257f/bin/utaipan-verify-t7M7D8N6sZ/config/svcomp-MemCleanup-32bit-Taipan_Default.epf [2023-11-19 05:19:06,422 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 05:19:06,422 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 05:19:06,450 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 05:19:06,451 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 05:19:06,451 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 05:19:06,452 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 05:19:06,453 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 05:19:06,453 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-19 05:19:06,454 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-19 05:19:06,454 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-19 05:19:06,455 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-19 05:19:06,456 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-19 05:19:06,456 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-19 05:19:06,457 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-19 05:19:06,457 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-19 05:19:06,458 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-19 05:19:06,458 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-19 05:19:06,459 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-19 05:19:06,459 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-19 05:19:06,460 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-19 05:19:06,460 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-19 05:19:06,461 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 05:19:06,461 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-19 05:19:06,462 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-19 05:19:06,462 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 05:19:06,463 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-19 05:19:06,463 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 05:19:06,463 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-19 05:19:06,464 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-19 05:19:06,464 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-19 05:19:06,464 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 05:19:06,465 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-19 05:19:06,465 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-19 05:19:06,465 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-19 05:19:06,465 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-19 05:19:06,465 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-19 05:19:06,466 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 05:19:06,466 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 05:19:06,466 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 05:19:06,467 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 05:19:06,467 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 05:19:06,467 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 05:19:06,467 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-19 05:19:06,467 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 05:19:06,468 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-19 05:19:06,468 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 05:19:06,468 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_6eb11a2d-fe78-4a07-8129-132097b0257f/bin/utaipan-verify-t7M7D8N6sZ/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6eb11a2d-fe78-4a07-8129-132097b0257f/bin/utaipan-verify-t7M7D8N6sZ Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-memcleanup) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f1f34940ecf685c2c1201858b264ccb53eb3034d3cb9952a1b49bb437c42dde1 [2023-11-19 05:19:06,727 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 05:19:06,765 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 05:19:06,768 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 05:19:06,769 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 05:19:06,771 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 05:19:06,773 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6eb11a2d-fe78-4a07-8129-132097b0257f/bin/utaipan-verify-t7M7D8N6sZ/../../sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test3-1.i [2023-11-19 05:19:09,973 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 05:19:10,376 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 05:19:10,380 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6eb11a2d-fe78-4a07-8129-132097b0257f/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test3-1.i [2023-11-19 05:19:10,412 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6eb11a2d-fe78-4a07-8129-132097b0257f/bin/utaipan-verify-t7M7D8N6sZ/data/b4b240145/cb30951875f943c0b1290280332c114b/FLAGfc533be07 [2023-11-19 05:19:10,428 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6eb11a2d-fe78-4a07-8129-132097b0257f/bin/utaipan-verify-t7M7D8N6sZ/data/b4b240145/cb30951875f943c0b1290280332c114b [2023-11-19 05:19:10,436 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 05:19:10,439 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 05:19:10,442 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 05:19:10,442 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 05:19:10,447 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 05:19:10,448 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 05:19:10" (1/1) ... [2023-11-19 05:19:10,449 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@68dca6d4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:19:10, skipping insertion in model container [2023-11-19 05:19:10,449 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 05:19:10" (1/1) ... [2023-11-19 05:19:10,543 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 05:19:11,111 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 05:19:11,131 ERROR L324 MainTranslator]: Unsupported Syntax: Found a cast between two array/pointer types of different sizes while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) [2023-11-19 05:19:11,132 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@4bcfc304 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:19:11, skipping insertion in model container [2023-11-19 05:19:11,132 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 05:19:11,133 INFO L186 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2023-11-19 05:19:11,135 INFO L158 Benchmark]: Toolchain (without parser) took 694.95ms. Allocated memory is still 130.0MB. Free memory was 83.6MB in the beginning and 64.1MB in the end (delta: 19.5MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2023-11-19 05:19:11,135 INFO L158 Benchmark]: CDTParser took 0.34ms. Allocated memory is still 96.5MB. Free memory was 50.5MB in the beginning and 50.3MB in the end (delta: 159.4kB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-19 05:19:11,136 INFO L158 Benchmark]: CACSL2BoogieTranslator took 690.94ms. Allocated memory is still 130.0MB. Free memory was 83.4MB in the beginning and 64.1MB in the end (delta: 19.3MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2023-11-19 05:19:11,147 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.34ms. Allocated memory is still 96.5MB. Free memory was 50.5MB in the beginning and 50.3MB in the end (delta: 159.4kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 690.94ms. Allocated memory is still 130.0MB. Free memory was 83.4MB in the beginning and 64.1MB in the end (delta: 19.3MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 736]: 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_6eb11a2d-fe78-4a07-8129-132097b0257f/bin/utaipan-verify-t7M7D8N6sZ/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6eb11a2d-fe78-4a07-8129-132097b0257f/bin/utaipan-verify-t7M7D8N6sZ/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6eb11a2d-fe78-4a07-8129-132097b0257f/bin/utaipan-verify-t7M7D8N6sZ/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6eb11a2d-fe78-4a07-8129-132097b0257f/bin/utaipan-verify-t7M7D8N6sZ/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test3-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6eb11a2d-fe78-4a07-8129-132097b0257f/bin/utaipan-verify-t7M7D8N6sZ/config/svcomp-MemCleanup-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6eb11a2d-fe78-4a07-8129-132097b0257f/bin/utaipan-verify-t7M7D8N6sZ --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-memcleanup) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash f1f34940ecf685c2c1201858b264ccb53eb3034d3cb9952a1b49bb437c42dde1 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 05:19:13,831 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 05:19:13,978 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6eb11a2d-fe78-4a07-8129-132097b0257f/bin/utaipan-verify-t7M7D8N6sZ/config/svcomp-MemCleanup-32bit-Taipan_Bitvector.epf [2023-11-19 05:19:13,987 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 05:19:13,988 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 05:19:14,031 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 05:19:14,032 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 05:19:14,033 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 05:19:14,034 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 05:19:14,039 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 05:19:14,040 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-19 05:19:14,040 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-19 05:19:14,041 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-19 05:19:14,043 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-19 05:19:14,043 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-19 05:19:14,044 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-19 05:19:14,044 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-19 05:19:14,045 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-19 05:19:14,046 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 05:19:14,047 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-19 05:19:14,047 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-19 05:19:14,048 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 05:19:14,049 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-19 05:19:14,049 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 05:19:14,049 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-19 05:19:14,050 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-19 05:19:14,050 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-19 05:19:14,051 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 05:19:14,051 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-19 05:19:14,052 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-19 05:19:14,053 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-11-19 05:19:14,054 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-11-19 05:19:14,054 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-19 05:19:14,054 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-19 05:19:14,054 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-19 05:19:14,055 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 05:19:14,056 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 05:19:14,056 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-19 05:19:14,056 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 05:19:14,057 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 05:19:14,057 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 05:19:14,057 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 05:19:14,058 INFO L153 SettingsManager]: * Trace refinement strategy=WALRUS [2023-11-19 05:19:14,058 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-11-19 05:19:14,058 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-19 05:19:14,059 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 05:19:14,059 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_6eb11a2d-fe78-4a07-8129-132097b0257f/bin/utaipan-verify-t7M7D8N6sZ/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6eb11a2d-fe78-4a07-8129-132097b0257f/bin/utaipan-verify-t7M7D8N6sZ Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-memcleanup) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f1f34940ecf685c2c1201858b264ccb53eb3034d3cb9952a1b49bb437c42dde1 [2023-11-19 05:19:14,498 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 05:19:14,531 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 05:19:14,534 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 05:19:14,535 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 05:19:14,537 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 05:19:14,539 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6eb11a2d-fe78-4a07-8129-132097b0257f/bin/utaipan-verify-t7M7D8N6sZ/../../sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test3-1.i [2023-11-19 05:19:17,787 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 05:19:18,204 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 05:19:18,205 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6eb11a2d-fe78-4a07-8129-132097b0257f/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test3-1.i [2023-11-19 05:19:18,239 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6eb11a2d-fe78-4a07-8129-132097b0257f/bin/utaipan-verify-t7M7D8N6sZ/data/93991a267/ef4fbf63e1804f62b16128ba35371806/FLAG7187e38e3 [2023-11-19 05:19:18,255 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6eb11a2d-fe78-4a07-8129-132097b0257f/bin/utaipan-verify-t7M7D8N6sZ/data/93991a267/ef4fbf63e1804f62b16128ba35371806 [2023-11-19 05:19:18,258 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 05:19:18,259 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 05:19:18,261 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 05:19:18,261 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 05:19:18,267 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 05:19:18,268 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 05:19:18" (1/1) ... [2023-11-19 05:19:18,270 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5d023708 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:19:18, skipping insertion in model container [2023-11-19 05:19:18,270 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 05:19:18" (1/1) ... [2023-11-19 05:19:18,351 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 05:19:19,265 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 05:19:19,300 INFO L199 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2023-11-19 05:19:19,340 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 05:19:19,498 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 05:19:19,508 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 05:19:19,628 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 05:19:19,698 WARN L675 CHandler]: The function memcmp is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 05:19:19,707 INFO L206 MainTranslator]: Completed translation [2023-11-19 05:19:19,707 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:19:19 WrapperNode [2023-11-19 05:19:19,708 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 05:19:19,709 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 05:19:19,709 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 05:19:19,709 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 05:19:19,717 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:19:19" (1/1) ... [2023-11-19 05:19:19,755 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:19:19" (1/1) ... [2023-11-19 05:19:19,820 INFO L138 Inliner]: procedures = 180, calls = 287, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 1032 [2023-11-19 05:19:19,820 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 05:19:19,821 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 05:19:19,821 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 05:19:19,821 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 05:19:19,832 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:19:19" (1/1) ... [2023-11-19 05:19:19,832 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:19:19" (1/1) ... [2023-11-19 05:19:19,847 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:19:19" (1/1) ... [2023-11-19 05:19:19,848 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:19:19" (1/1) ... [2023-11-19 05:19:19,904 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:19:19" (1/1) ... [2023-11-19 05:19:19,918 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:19:19" (1/1) ... [2023-11-19 05:19:19,923 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:19:19" (1/1) ... [2023-11-19 05:19:19,930 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:19:19" (1/1) ... [2023-11-19 05:19:19,942 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 05:19:19,943 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 05:19:19,943 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 05:19:19,943 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 05:19:19,944 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:19:19" (1/1) ... [2023-11-19 05:19:19,950 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 05:19:19,978 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6eb11a2d-fe78-4a07-8129-132097b0257f/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 05:19:20,002 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6eb11a2d-fe78-4a07-8129-132097b0257f/bin/utaipan-verify-t7M7D8N6sZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 05:19:20,050 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6eb11a2d-fe78-4a07-8129-132097b0257f/bin/utaipan-verify-t7M7D8N6sZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 05:19:20,061 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-11-19 05:19:20,061 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-11-19 05:19:20,061 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2023-11-19 05:19:20,061 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2023-11-19 05:19:20,062 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-11-19 05:19:20,063 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-11-19 05:19:20,064 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2023-11-19 05:19:20,064 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2023-11-19 05:19:20,065 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-19 05:19:20,065 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 05:19:20,065 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-19 05:19:20,065 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-19 05:19:20,065 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2023-11-19 05:19:20,065 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-19 05:19:20,066 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-19 05:19:20,067 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2023-11-19 05:19:20,067 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2023-11-19 05:19:20,067 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 05:19:20,068 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 05:19:20,318 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 05:19:20,320 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 05:19:28,112 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 05:19:28,132 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 05:19:28,133 INFO L302 CfgBuilder]: Removed 63 assume(true) statements. [2023-11-19 05:19:28,146 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 05:19:28 BoogieIcfgContainer [2023-11-19 05:19:28,147 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 05:19:28,150 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 05:19:28,150 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 05:19:28,154 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 05:19:28,154 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 05:19:18" (1/3) ... [2023-11-19 05:19:28,155 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@708c01f7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 05:19:28, skipping insertion in model container [2023-11-19 05:19:28,155 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:19:19" (2/3) ... [2023-11-19 05:19:28,157 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@708c01f7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 05:19:28, skipping insertion in model container [2023-11-19 05:19:28,158 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 05:19:28" (3/3) ... [2023-11-19 05:19:28,159 INFO L112 eAbstractionObserver]: Analyzing ICFG uthash_JEN_test3-1.i [2023-11-19 05:19:28,179 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 05:19:28,179 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-11-19 05:19:28,229 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 05:19:28,236 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;@1d372380, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-19 05:19:28,237 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-11-19 05:19:28,242 INFO L276 IsEmpty]: Start isEmpty. Operand has 213 states, 197 states have (on average 1.6649746192893402) internal successors, (328), 206 states have internal predecessors, (328), 10 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (10), 6 states have call predecessors, (10), 10 states have call successors, (10) [2023-11-19 05:19:28,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2023-11-19 05:19:28,250 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:19:28,251 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 05:19:28,252 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2023-11-19 05:19:28,257 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:19:28,257 INFO L85 PathProgramCache]: Analyzing trace with hash -500248016, now seen corresponding path program 1 times [2023-11-19 05:19:28,270 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-19 05:19:28,270 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [386644617] [2023-11-19 05:19:28,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:19:28,271 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-19 05:19:28,271 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6eb11a2d-fe78-4a07-8129-132097b0257f/bin/utaipan-verify-t7M7D8N6sZ/mathsat [2023-11-19 05:19:28,276 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6eb11a2d-fe78-4a07-8129-132097b0257f/bin/utaipan-verify-t7M7D8N6sZ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-19 05:19:28,289 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6eb11a2d-fe78-4a07-8129-132097b0257f/bin/utaipan-verify-t7M7D8N6sZ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2023-11-19 05:19:28,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:19:28,531 INFO L262 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 1 conjunts are in the unsatisfiable core [2023-11-19 05:19:28,538 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 05:19:28,562 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:19:28,563 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 05:19:28,564 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-19 05:19:28,564 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [386644617] [2023-11-19 05:19:28,565 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [386644617] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:19:28,565 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:19:28,565 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 05:19:28,567 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [4769686] [2023-11-19 05:19:28,568 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:19:28,576 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-19 05:19:28,577 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-19 05:19:28,617 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-19 05:19:28,617 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-19 05:19:28,625 INFO L87 Difference]: Start difference. First operand has 213 states, 197 states have (on average 1.6649746192893402) internal successors, (328), 206 states have internal predecessors, (328), 10 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (10), 6 states have call predecessors, (10), 10 states have call successors, (10) Second operand has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:19:28,695 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:19:28,698 INFO L93 Difference]: Finished difference Result 211 states and 276 transitions. [2023-11-19 05:19:28,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-19 05:19:28,700 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2023-11-19 05:19:28,701 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:19:28,721 INFO L225 Difference]: With dead ends: 211 [2023-11-19 05:19:28,721 INFO L226 Difference]: Without dead ends: 209 [2023-11-19 05:19:28,723 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-19 05:19:28,728 INFO L413 NwaCegarLoop]: 276 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 276 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 05:19:28,729 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 276 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 05:19:28,752 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 209 states. [2023-11-19 05:19:28,808 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 209 to 209. [2023-11-19 05:19:28,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 209 states, 195 states have (on average 1.3128205128205128) internal successors, (256), 202 states have internal predecessors, (256), 10 states have call successors, (10), 3 states have call predecessors, (10), 2 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) [2023-11-19 05:19:28,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 209 states to 209 states and 274 transitions. [2023-11-19 05:19:28,825 INFO L78 Accepts]: Start accepts. Automaton has 209 states and 274 transitions. Word has length 9 [2023-11-19 05:19:28,826 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:19:28,826 INFO L495 AbstractCegarLoop]: Abstraction has 209 states and 274 transitions. [2023-11-19 05:19:28,826 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:19:28,827 INFO L276 IsEmpty]: Start isEmpty. Operand 209 states and 274 transitions. [2023-11-19 05:19:28,827 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2023-11-19 05:19:28,828 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:19:28,828 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 05:19:28,837 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6eb11a2d-fe78-4a07-8129-132097b0257f/bin/utaipan-verify-t7M7D8N6sZ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Ended with exit code 0 [2023-11-19 05:19:29,031 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6eb11a2d-fe78-4a07-8129-132097b0257f/bin/utaipan-verify-t7M7D8N6sZ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-19 05:19:29,032 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2023-11-19 05:19:29,033 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:19:29,033 INFO L85 PathProgramCache]: Analyzing trace with hash -1492776179, now seen corresponding path program 1 times [2023-11-19 05:19:29,034 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-19 05:19:29,035 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [373041505] [2023-11-19 05:19:29,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:19:29,036 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-19 05:19:29,036 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6eb11a2d-fe78-4a07-8129-132097b0257f/bin/utaipan-verify-t7M7D8N6sZ/mathsat [2023-11-19 05:19:29,037 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6eb11a2d-fe78-4a07-8129-132097b0257f/bin/utaipan-verify-t7M7D8N6sZ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-19 05:19:29,060 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6eb11a2d-fe78-4a07-8129-132097b0257f/bin/utaipan-verify-t7M7D8N6sZ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2023-11-19 05:19:29,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:19:29,339 INFO L262 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-19 05:19:29,343 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 05:19:29,418 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-19 05:19:29,419 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-19 05:19:29,420 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-19 05:19:29,438 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 39 [2023-11-19 05:19:29,562 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-19 05:19:29,563 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 70 treesize of output 26 [2023-11-19 05:19:29,599 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:19:29,600 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 05:19:29,600 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-19 05:19:29,605 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [373041505] [2023-11-19 05:19:29,606 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [373041505] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:19:29,608 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:19:29,608 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 05:19:29,609 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1579118613] [2023-11-19 05:19:29,609 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:19:29,610 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 05:19:29,611 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-19 05:19:29,612 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 05:19:29,612 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-19 05:19:29,613 INFO L87 Difference]: Start difference. First operand 209 states and 274 transitions. Second operand has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:19:31,981 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.02s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-19 05:19:35,127 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-19 05:19:37,636 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:19:37,637 INFO L93 Difference]: Finished difference Result 343 states and 457 transitions. [2023-11-19 05:19:37,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 05:19:37,638 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2023-11-19 05:19:37,639 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:19:37,642 INFO L225 Difference]: With dead ends: 343 [2023-11-19 05:19:37,643 INFO L226 Difference]: Without dead ends: 343 [2023-11-19 05:19:37,643 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-19 05:19:37,645 INFO L413 NwaCegarLoop]: 244 mSDtfsCounter, 164 mSDsluCounter, 433 mSDsCounter, 0 mSdLazyCounter, 171 mSolverCounterSat, 2 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 169 SdHoareTripleChecker+Valid, 677 SdHoareTripleChecker+Invalid, 174 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 171 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.9s IncrementalHoareTripleChecker+Time [2023-11-19 05:19:37,645 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [169 Valid, 677 Invalid, 174 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 171 Invalid, 1 Unknown, 0 Unchecked, 7.9s Time] [2023-11-19 05:19:37,648 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 343 states. [2023-11-19 05:19:37,664 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 343 to 211. [2023-11-19 05:19:37,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 211 states, 197 states have (on average 1.3096446700507614) internal successors, (258), 204 states have internal predecessors, (258), 10 states have call successors, (10), 3 states have call predecessors, (10), 2 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) [2023-11-19 05:19:37,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 211 states to 211 states and 276 transitions. [2023-11-19 05:19:37,667 INFO L78 Accepts]: Start accepts. Automaton has 211 states and 276 transitions. Word has length 11 [2023-11-19 05:19:37,667 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:19:37,668 INFO L495 AbstractCegarLoop]: Abstraction has 211 states and 276 transitions. [2023-11-19 05:19:37,668 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:19:37,668 INFO L276 IsEmpty]: Start isEmpty. Operand 211 states and 276 transitions. [2023-11-19 05:19:37,671 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2023-11-19 05:19:37,672 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:19:37,672 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, 1, 1] [2023-11-19 05:19:37,690 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6eb11a2d-fe78-4a07-8129-132097b0257f/bin/utaipan-verify-t7M7D8N6sZ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Ended with exit code 0 [2023-11-19 05:19:37,877 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6eb11a2d-fe78-4a07-8129-132097b0257f/bin/utaipan-verify-t7M7D8N6sZ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-19 05:19:37,878 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2023-11-19 05:19:37,878 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:19:37,879 INFO L85 PathProgramCache]: Analyzing trace with hash -638128961, now seen corresponding path program 1 times [2023-11-19 05:19:37,880 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-19 05:19:37,884 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [245009373] [2023-11-19 05:19:37,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:19:37,888 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-19 05:19:37,888 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6eb11a2d-fe78-4a07-8129-132097b0257f/bin/utaipan-verify-t7M7D8N6sZ/mathsat [2023-11-19 05:19:37,889 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6eb11a2d-fe78-4a07-8129-132097b0257f/bin/utaipan-verify-t7M7D8N6sZ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-19 05:19:37,936 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6eb11a2d-fe78-4a07-8129-132097b0257f/bin/utaipan-verify-t7M7D8N6sZ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2023-11-19 05:19:38,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:19:38,517 INFO L262 TraceCheckSpWp]: Trace formula consists of 355 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-19 05:19:38,523 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 05:19:38,592 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:19:38,596 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 05:19:38,597 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-19 05:19:38,597 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [245009373] [2023-11-19 05:19:38,598 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [245009373] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:19:38,598 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:19:38,598 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 05:19:38,599 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1369800825] [2023-11-19 05:19:38,599 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:19:38,600 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 05:19:38,600 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-19 05:19:38,601 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 05:19:38,602 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-19 05:19:38,602 INFO L87 Difference]: Start difference. First operand 211 states and 276 transitions. Second operand has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:19:38,801 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:19:38,801 INFO L93 Difference]: Finished difference Result 215 states and 272 transitions. [2023-11-19 05:19:38,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 05:19:38,802 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 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 67 [2023-11-19 05:19:38,802 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:19:38,806 INFO L225 Difference]: With dead ends: 215 [2023-11-19 05:19:38,806 INFO L226 Difference]: Without dead ends: 215 [2023-11-19 05:19:38,807 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 64 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-19 05:19:38,811 INFO L413 NwaCegarLoop]: 245 mSDtfsCounter, 36 mSDsluCounter, 464 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 709 SdHoareTripleChecker+Invalid, 62 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-19 05:19:38,813 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 709 Invalid, 62 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-19 05:19:38,817 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 215 states. [2023-11-19 05:19:38,840 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 215 to 214. [2023-11-19 05:19:38,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 214 states, 200 states have (on average 1.265) internal successors, (253), 207 states have internal predecessors, (253), 10 states have call successors, (10), 3 states have call predecessors, (10), 2 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) [2023-11-19 05:19:38,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 214 states to 214 states and 271 transitions. [2023-11-19 05:19:38,843 INFO L78 Accepts]: Start accepts. Automaton has 214 states and 271 transitions. Word has length 67 [2023-11-19 05:19:38,843 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:19:38,843 INFO L495 AbstractCegarLoop]: Abstraction has 214 states and 271 transitions. [2023-11-19 05:19:38,843 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:19:38,844 INFO L276 IsEmpty]: Start isEmpty. Operand 214 states and 271 transitions. [2023-11-19 05:19:38,856 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2023-11-19 05:19:38,857 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:19:38,857 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, 1, 1] [2023-11-19 05:19:38,875 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6eb11a2d-fe78-4a07-8129-132097b0257f/bin/utaipan-verify-t7M7D8N6sZ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2023-11-19 05:19:39,066 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6eb11a2d-fe78-4a07-8129-132097b0257f/bin/utaipan-verify-t7M7D8N6sZ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-19 05:19:39,067 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2023-11-19 05:19:39,067 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:19:39,067 INFO L85 PathProgramCache]: Analyzing trace with hash 1225598771, now seen corresponding path program 1 times [2023-11-19 05:19:39,068 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-19 05:19:39,069 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1256672177] [2023-11-19 05:19:39,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:19:39,069 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-19 05:19:39,069 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6eb11a2d-fe78-4a07-8129-132097b0257f/bin/utaipan-verify-t7M7D8N6sZ/mathsat [2023-11-19 05:19:39,070 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6eb11a2d-fe78-4a07-8129-132097b0257f/bin/utaipan-verify-t7M7D8N6sZ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-19 05:19:39,072 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6eb11a2d-fe78-4a07-8129-132097b0257f/bin/utaipan-verify-t7M7D8N6sZ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2023-11-19 05:19:39,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:19:39,561 INFO L262 TraceCheckSpWp]: Trace formula consists of 349 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-19 05:19:39,567 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 05:19:40,017 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:19:40,018 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 05:19:40,018 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-19 05:19:40,018 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1256672177] [2023-11-19 05:19:40,018 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1256672177] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:19:40,019 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:19:40,019 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 05:19:40,019 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [11937027] [2023-11-19 05:19:40,019 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:19:40,020 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 05:19:40,020 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-19 05:19:40,020 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 05:19:40,021 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 05:19:40,021 INFO L87 Difference]: Start difference. First operand 214 states and 271 transitions. Second operand has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:19:40,951 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:19:40,952 INFO L93 Difference]: Finished difference Result 342 states and 435 transitions. [2023-11-19 05:19:40,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 05:19:40,952 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 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 67 [2023-11-19 05:19:40,953 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:19:40,955 INFO L225 Difference]: With dead ends: 342 [2023-11-19 05:19:40,955 INFO L226 Difference]: Without dead ends: 342 [2023-11-19 05:19:40,956 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 65 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 05:19:40,957 INFO L413 NwaCegarLoop]: 329 mSDtfsCounter, 115 mSDsluCounter, 236 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 122 SdHoareTripleChecker+Valid, 565 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-11-19 05:19:40,957 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [122 Valid, 565 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-11-19 05:19:40,958 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 342 states. [2023-11-19 05:19:40,974 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 342 to 322. [2023-11-19 05:19:40,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 322 states, 308 states have (on average 1.2564935064935066) internal successors, (387), 315 states have internal predecessors, (387), 10 states have call successors, (10), 3 states have call predecessors, (10), 2 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) [2023-11-19 05:19:40,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 322 states to 322 states and 405 transitions. [2023-11-19 05:19:40,977 INFO L78 Accepts]: Start accepts. Automaton has 322 states and 405 transitions. Word has length 67 [2023-11-19 05:19:40,978 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:19:40,978 INFO L495 AbstractCegarLoop]: Abstraction has 322 states and 405 transitions. [2023-11-19 05:19:40,978 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:19:40,978 INFO L276 IsEmpty]: Start isEmpty. Operand 322 states and 405 transitions. [2023-11-19 05:19:40,981 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2023-11-19 05:19:40,981 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:19:40,982 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, 1, 1] [2023-11-19 05:19:40,994 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6eb11a2d-fe78-4a07-8129-132097b0257f/bin/utaipan-verify-t7M7D8N6sZ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Ended with exit code 0 [2023-11-19 05:19:41,189 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6eb11a2d-fe78-4a07-8129-132097b0257f/bin/utaipan-verify-t7M7D8N6sZ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-19 05:19:41,190 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2023-11-19 05:19:41,190 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:19:41,190 INFO L85 PathProgramCache]: Analyzing trace with hash -15915080, now seen corresponding path program 1 times [2023-11-19 05:19:41,192 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-19 05:19:41,192 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [683087788] [2023-11-19 05:19:41,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:19:41,192 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-19 05:19:41,193 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6eb11a2d-fe78-4a07-8129-132097b0257f/bin/utaipan-verify-t7M7D8N6sZ/mathsat [2023-11-19 05:19:41,194 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6eb11a2d-fe78-4a07-8129-132097b0257f/bin/utaipan-verify-t7M7D8N6sZ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-19 05:19:41,201 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6eb11a2d-fe78-4a07-8129-132097b0257f/bin/utaipan-verify-t7M7D8N6sZ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2023-11-19 05:19:41,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:19:41,788 INFO L262 TraceCheckSpWp]: Trace formula consists of 480 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-19 05:19:41,793 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 05:19:41,847 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:19:41,848 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 05:19:41,848 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-19 05:19:41,848 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [683087788] [2023-11-19 05:19:41,848 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [683087788] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:19:41,848 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:19:41,849 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 05:19:41,849 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1717786516] [2023-11-19 05:19:41,849 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:19:41,850 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 05:19:41,850 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-19 05:19:41,851 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 05:19:41,851 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-19 05:19:41,851 INFO L87 Difference]: Start difference. First operand 322 states and 405 transitions. Second operand has 4 states, 4 states have (on average 19.5) internal successors, (78), 4 states have internal predecessors, (78), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-19 05:19:41,916 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:19:41,916 INFO L93 Difference]: Finished difference Result 325 states and 409 transitions. [2023-11-19 05:19:41,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 05:19:41,917 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.5) internal successors, (78), 4 states have internal predecessors, (78), 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 82 [2023-11-19 05:19:41,917 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:19:41,919 INFO L225 Difference]: With dead ends: 325 [2023-11-19 05:19:41,919 INFO L226 Difference]: Without dead ends: 325 [2023-11-19 05:19:41,920 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 79 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-19 05:19:41,921 INFO L413 NwaCegarLoop]: 260 mSDtfsCounter, 2 mSDsluCounter, 516 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 776 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 05:19:41,921 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 776 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 05:19:41,922 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 325 states. [2023-11-19 05:19:41,929 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 325 to 325. [2023-11-19 05:19:41,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 325 states, 310 states have (on average 1.2580645161290323) internal successors, (390), 318 states have internal predecessors, (390), 10 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (9), 4 states have call predecessors, (9), 8 states have call successors, (9) [2023-11-19 05:19:41,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 325 states to 325 states and 409 transitions. [2023-11-19 05:19:41,932 INFO L78 Accepts]: Start accepts. Automaton has 325 states and 409 transitions. Word has length 82 [2023-11-19 05:19:41,933 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:19:41,933 INFO L495 AbstractCegarLoop]: Abstraction has 325 states and 409 transitions. [2023-11-19 05:19:41,933 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.5) internal successors, (78), 4 states have internal predecessors, (78), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-19 05:19:41,933 INFO L276 IsEmpty]: Start isEmpty. Operand 325 states and 409 transitions. [2023-11-19 05:19:41,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2023-11-19 05:19:41,935 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:19:41,935 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 05:19:41,945 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6eb11a2d-fe78-4a07-8129-132097b0257f/bin/utaipan-verify-t7M7D8N6sZ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Ended with exit code 0 [2023-11-19 05:19:42,143 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6eb11a2d-fe78-4a07-8129-132097b0257f/bin/utaipan-verify-t7M7D8N6sZ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-19 05:19:42,144 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2023-11-19 05:19:42,144 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:19:42,144 INFO L85 PathProgramCache]: Analyzing trace with hash -1558966730, now seen corresponding path program 1 times [2023-11-19 05:19:42,145 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-19 05:19:42,145 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2146849147] [2023-11-19 05:19:42,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:19:42,146 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-19 05:19:42,146 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6eb11a2d-fe78-4a07-8129-132097b0257f/bin/utaipan-verify-t7M7D8N6sZ/mathsat [2023-11-19 05:19:42,147 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6eb11a2d-fe78-4a07-8129-132097b0257f/bin/utaipan-verify-t7M7D8N6sZ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-19 05:19:42,186 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6eb11a2d-fe78-4a07-8129-132097b0257f/bin/utaipan-verify-t7M7D8N6sZ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2023-11-19 05:19:42,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:19:42,820 INFO L262 TraceCheckSpWp]: Trace formula consists of 502 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-19 05:19:42,824 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 05:19:42,880 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 9 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-19 05:19:42,881 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 05:19:43,034 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-19 05:19:43,035 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-19 05:19:43,035 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2146849147] [2023-11-19 05:19:43,035 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2146849147] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 05:19:43,036 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [713059912] [2023-11-19 05:19:43,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:19:43,036 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-11-19 05:19:43,037 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6eb11a2d-fe78-4a07-8129-132097b0257f/bin/utaipan-verify-t7M7D8N6sZ/cvc4 [2023-11-19 05:19:43,076 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6eb11a2d-fe78-4a07-8129-132097b0257f/bin/utaipan-verify-t7M7D8N6sZ/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-11-19 05:19:43,084 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6eb11a2d-fe78-4a07-8129-132097b0257f/bin/utaipan-verify-t7M7D8N6sZ/cvc4 --incremental --print-success --lang smt (8)] Waiting until timeout for monitored process [2023-11-19 05:19:43,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:19:43,805 INFO L262 TraceCheckSpWp]: Trace formula consists of 502 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-19 05:19:43,815 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 05:19:44,166 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-11-19 05:19:44,167 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 05:19:44,167 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [713059912] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:19:44,167 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-11-19 05:19:44,167 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5, 5] total 10 [2023-11-19 05:19:44,168 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [697847049] [2023-11-19 05:19:44,168 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:19:44,168 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 05:19:44,168 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-19 05:19:44,169 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 05:19:44,169 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2023-11-19 05:19:44,170 INFO L87 Difference]: Start difference. First operand 325 states and 409 transitions. Second operand has 4 states, 4 states have (on average 19.0) internal successors, (76), 4 states have internal predecessors, (76), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-19 05:19:47,340 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-19 05:19:49,344 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-19 05:19:52,332 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.83s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-19 05:19:53,224 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:19:53,224 INFO L93 Difference]: Finished difference Result 442 states and 573 transitions. [2023-11-19 05:19:53,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-19 05:19:53,225 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.0) internal successors, (76), 4 states have internal predecessors, (76), 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 84 [2023-11-19 05:19:53,226 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:19:53,229 INFO L225 Difference]: With dead ends: 442 [2023-11-19 05:19:53,229 INFO L226 Difference]: Without dead ends: 442 [2023-11-19 05:19:53,229 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 251 GetRequests, 242 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2023-11-19 05:19:53,230 INFO L413 NwaCegarLoop]: 258 mSDtfsCounter, 507 mSDsluCounter, 228 mSDsCounter, 0 mSdLazyCounter, 79 mSolverCounterSat, 14 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 512 SdHoareTripleChecker+Valid, 486 SdHoareTripleChecker+Invalid, 95 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 79 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.0s IncrementalHoareTripleChecker+Time [2023-11-19 05:19:53,230 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [512 Valid, 486 Invalid, 95 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 79 Invalid, 2 Unknown, 0 Unchecked, 9.0s Time] [2023-11-19 05:19:53,231 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 442 states. [2023-11-19 05:19:53,246 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 442 to 410. [2023-11-19 05:19:53,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 410 states, 395 states have (on average 1.270886075949367) internal successors, (502), 403 states have internal predecessors, (502), 10 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (9), 4 states have call predecessors, (9), 8 states have call successors, (9) [2023-11-19 05:19:53,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 410 states to 410 states and 521 transitions. [2023-11-19 05:19:53,250 INFO L78 Accepts]: Start accepts. Automaton has 410 states and 521 transitions. Word has length 84 [2023-11-19 05:19:53,250 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:19:53,251 INFO L495 AbstractCegarLoop]: Abstraction has 410 states and 521 transitions. [2023-11-19 05:19:53,251 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.0) internal successors, (76), 4 states have internal predecessors, (76), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-19 05:19:53,251 INFO L276 IsEmpty]: Start isEmpty. Operand 410 states and 521 transitions. [2023-11-19 05:19:53,252 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2023-11-19 05:19:53,252 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:19:53,253 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 05:19:53,267 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6eb11a2d-fe78-4a07-8129-132097b0257f/bin/utaipan-verify-t7M7D8N6sZ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2023-11-19 05:19:53,466 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6eb11a2d-fe78-4a07-8129-132097b0257f/bin/utaipan-verify-t7M7D8N6sZ/cvc4 --incremental --print-success --lang smt (8)] Forceful destruction successful, exit code 0 [2023-11-19 05:19:53,663 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6eb11a2d-fe78-4a07-8129-132097b0257f/bin/utaipan-verify-t7M7D8N6sZ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6eb11a2d-fe78-4a07-8129-132097b0257f/bin/utaipan-verify-t7M7D8N6sZ/cvc4 --incremental --print-success --lang smt [2023-11-19 05:19:53,663 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2023-11-19 05:19:53,664 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:19:53,664 INFO L85 PathProgramCache]: Analyzing trace with hash -450795260, now seen corresponding path program 1 times [2023-11-19 05:19:53,664 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-19 05:19:53,665 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2136456151] [2023-11-19 05:19:53,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:19:53,665 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-19 05:19:53,665 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6eb11a2d-fe78-4a07-8129-132097b0257f/bin/utaipan-verify-t7M7D8N6sZ/mathsat [2023-11-19 05:19:53,666 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6eb11a2d-fe78-4a07-8129-132097b0257f/bin/utaipan-verify-t7M7D8N6sZ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-19 05:19:53,670 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6eb11a2d-fe78-4a07-8129-132097b0257f/bin/utaipan-verify-t7M7D8N6sZ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2023-11-19 05:19:54,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:19:54,359 INFO L262 TraceCheckSpWp]: Trace formula consists of 517 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-19 05:19:54,364 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 05:19:54,432 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 9 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-19 05:19:54,432 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 05:19:54,577 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-19 05:19:54,577 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-19 05:19:54,578 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2136456151] [2023-11-19 05:19:54,578 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2136456151] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 05:19:54,578 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1728535415] [2023-11-19 05:19:54,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:19:54,578 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-11-19 05:19:54,579 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6eb11a2d-fe78-4a07-8129-132097b0257f/bin/utaipan-verify-t7M7D8N6sZ/cvc4 [2023-11-19 05:19:54,580 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6eb11a2d-fe78-4a07-8129-132097b0257f/bin/utaipan-verify-t7M7D8N6sZ/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-11-19 05:19:54,608 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6eb11a2d-fe78-4a07-8129-132097b0257f/bin/utaipan-verify-t7M7D8N6sZ/cvc4 --incremental --print-success --lang smt (10)] Waiting until timeout for monitored process [2023-11-19 05:19:55,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:19:55,604 INFO L262 TraceCheckSpWp]: Trace formula consists of 517 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-19 05:19:55,608 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 05:19:55,650 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 9 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-19 05:19:55,650 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 05:19:55,721 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-19 05:19:55,721 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1728535415] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 05:19:55,721 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [559959848] [2023-11-19 05:19:55,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:19:55,721 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 05:19:55,722 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6eb11a2d-fe78-4a07-8129-132097b0257f/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 05:19:55,729 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6eb11a2d-fe78-4a07-8129-132097b0257f/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 05:19:55,730 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6eb11a2d-fe78-4a07-8129-132097b0257f/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-11-19 05:19:56,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:19:56,385 INFO L262 TraceCheckSpWp]: Trace formula consists of 517 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-19 05:19:56,390 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 05:19:56,407 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-19 05:19:56,408 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-19 05:19:56,409 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-19 05:19:56,419 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 39 [2023-11-19 05:19:56,526 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-19 05:19:56,526 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 70 treesize of output 26 [2023-11-19 05:19:56,564 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-11-19 05:19:56,565 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 05:19:56,565 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [559959848] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:19:56,565 INFO L185 FreeRefinementEngine]: Found 1 perfect and 4 imperfect interpolant sequences. [2023-11-19 05:19:56,565 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5, 5, 5, 5] total 10 [2023-11-19 05:19:56,566 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1619212688] [2023-11-19 05:19:56,566 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:19:56,566 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 05:19:56,567 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-19 05:19:56,567 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 05:19:56,568 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2023-11-19 05:19:56,568 INFO L87 Difference]: Start difference. First operand 410 states and 521 transitions. Second operand has 4 states, 4 states have (on average 19.5) internal successors, (78), 4 states have internal predecessors, (78), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-19 05:20:00,963 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 [] [2023-11-19 05:20:03,950 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:20:03,950 INFO L93 Difference]: Finished difference Result 488 states and 623 transitions. [2023-11-19 05:20:03,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 05:20:03,952 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.5) internal successors, (78), 4 states have internal predecessors, (78), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 89 [2023-11-19 05:20:03,952 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:20:03,956 INFO L225 Difference]: With dead ends: 488 [2023-11-19 05:20:03,956 INFO L226 Difference]: Without dead ends: 488 [2023-11-19 05:20:03,957 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 441 GetRequests, 432 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2023-11-19 05:20:03,958 INFO L413 NwaCegarLoop]: 241 mSDtfsCounter, 135 mSDsluCounter, 432 mSDsCounter, 0 mSdLazyCounter, 138 mSolverCounterSat, 2 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 135 SdHoareTripleChecker+Valid, 673 SdHoareTripleChecker+Invalid, 141 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 138 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.3s IncrementalHoareTripleChecker+Time [2023-11-19 05:20:03,958 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [135 Valid, 673 Invalid, 141 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 138 Invalid, 1 Unknown, 0 Unchecked, 7.3s Time] [2023-11-19 05:20:03,960 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 488 states. [2023-11-19 05:20:03,970 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 488 to 412. [2023-11-19 05:20:03,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 412 states, 397 states have (on average 1.269521410579345) internal successors, (504), 405 states have internal predecessors, (504), 10 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (9), 4 states have call predecessors, (9), 8 states have call successors, (9) [2023-11-19 05:20:03,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 412 states to 412 states and 523 transitions. [2023-11-19 05:20:03,974 INFO L78 Accepts]: Start accepts. Automaton has 412 states and 523 transitions. Word has length 89 [2023-11-19 05:20:03,975 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:20:03,975 INFO L495 AbstractCegarLoop]: Abstraction has 412 states and 523 transitions. [2023-11-19 05:20:03,975 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.5) internal successors, (78), 4 states have internal predecessors, (78), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-19 05:20:03,976 INFO L276 IsEmpty]: Start isEmpty. Operand 412 states and 523 transitions. [2023-11-19 05:20:03,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2023-11-19 05:20:03,977 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:20:03,978 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 05:20:03,996 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6eb11a2d-fe78-4a07-8129-132097b0257f/bin/utaipan-verify-t7M7D8N6sZ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2023-11-19 05:20:04,208 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6eb11a2d-fe78-4a07-8129-132097b0257f/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-11-19 05:20:04,394 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6eb11a2d-fe78-4a07-8129-132097b0257f/bin/utaipan-verify-t7M7D8N6sZ/cvc4 --incremental --print-success --lang smt (10)] Forceful destruction successful, exit code 0 [2023-11-19 05:20:04,588 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6eb11a2d-fe78-4a07-8129-132097b0257f/bin/utaipan-verify-t7M7D8N6sZ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6eb11a2d-fe78-4a07-8129-132097b0257f/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6eb11a2d-fe78-4a07-8129-132097b0257f/bin/utaipan-verify-t7M7D8N6sZ/cvc4 --incremental --print-success --lang smt [2023-11-19 05:20:04,588 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2023-11-19 05:20:04,589 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:20:04,589 INFO L85 PathProgramCache]: Analyzing trace with hash -1030833744, now seen corresponding path program 1 times [2023-11-19 05:20:04,589 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-19 05:20:04,589 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1722573883] [2023-11-19 05:20:04,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:20:04,590 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-19 05:20:04,590 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6eb11a2d-fe78-4a07-8129-132097b0257f/bin/utaipan-verify-t7M7D8N6sZ/mathsat [2023-11-19 05:20:04,591 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6eb11a2d-fe78-4a07-8129-132097b0257f/bin/utaipan-verify-t7M7D8N6sZ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-19 05:20:04,592 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6eb11a2d-fe78-4a07-8129-132097b0257f/bin/utaipan-verify-t7M7D8N6sZ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2023-11-19 05:20:05,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:20:05,395 INFO L262 TraceCheckSpWp]: Trace formula consists of 573 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-19 05:20:05,426 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 05:20:05,493 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 9 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-19 05:20:05,493 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 05:20:05,639 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-19 05:20:05,640 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-19 05:20:05,640 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1722573883] [2023-11-19 05:20:05,640 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1722573883] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 05:20:05,640 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1559034919] [2023-11-19 05:20:05,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:20:05,640 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-11-19 05:20:05,641 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6eb11a2d-fe78-4a07-8129-132097b0257f/bin/utaipan-verify-t7M7D8N6sZ/cvc4 [2023-11-19 05:20:05,642 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6eb11a2d-fe78-4a07-8129-132097b0257f/bin/utaipan-verify-t7M7D8N6sZ/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-11-19 05:20:05,652 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6eb11a2d-fe78-4a07-8129-132097b0257f/bin/utaipan-verify-t7M7D8N6sZ/cvc4 --incremental --print-success --lang smt (13)] Waiting until timeout for monitored process [2023-11-19 05:20:06,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:20:06,501 INFO L262 TraceCheckSpWp]: Trace formula consists of 573 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-19 05:20:06,506 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 05:20:06,570 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-11-19 05:20:06,570 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 05:20:06,570 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1559034919] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:20:06,571 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-11-19 05:20:06,571 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5, 5] total 9 [2023-11-19 05:20:06,571 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [122846320] [2023-11-19 05:20:06,571 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:20:06,572 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 05:20:06,572 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-19 05:20:06,573 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 05:20:06,573 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2023-11-19 05:20:06,573 INFO L87 Difference]: Start difference. First operand 412 states and 523 transitions. Second operand has 3 states, 3 states have (on average 39.666666666666664) internal successors, (119), 3 states have internal predecessors, (119), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-19 05:20:06,752 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:20:06,752 INFO L93 Difference]: Finished difference Result 475 states and 586 transitions. [2023-11-19 05:20:06,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 05:20:06,753 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 39.666666666666664) internal successors, (119), 3 states have internal predecessors, (119), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 129 [2023-11-19 05:20:06,753 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:20:06,756 INFO L225 Difference]: With dead ends: 475 [2023-11-19 05:20:06,757 INFO L226 Difference]: Without dead ends: 475 [2023-11-19 05:20:06,757 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 384 GetRequests, 377 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2023-11-19 05:20:06,758 INFO L413 NwaCegarLoop]: 243 mSDtfsCounter, 8 mSDsluCounter, 228 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 471 SdHoareTripleChecker+Invalid, 70 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-19 05:20:06,759 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 471 Invalid, 70 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-19 05:20:06,760 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 475 states. [2023-11-19 05:20:06,774 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 475 to 472. [2023-11-19 05:20:06,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 472 states, 457 states have (on average 1.2341356673960613) internal successors, (564), 465 states have internal predecessors, (564), 10 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (9), 4 states have call predecessors, (9), 8 states have call successors, (9) [2023-11-19 05:20:06,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 472 states to 472 states and 583 transitions. [2023-11-19 05:20:06,780 INFO L78 Accepts]: Start accepts. Automaton has 472 states and 583 transitions. Word has length 129 [2023-11-19 05:20:06,781 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:20:06,781 INFO L495 AbstractCegarLoop]: Abstraction has 472 states and 583 transitions. [2023-11-19 05:20:06,781 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 39.666666666666664) internal successors, (119), 3 states have internal predecessors, (119), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-19 05:20:06,782 INFO L276 IsEmpty]: Start isEmpty. Operand 472 states and 583 transitions. [2023-11-19 05:20:06,783 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2023-11-19 05:20:06,784 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:20:06,784 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 05:20:06,796 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6eb11a2d-fe78-4a07-8129-132097b0257f/bin/utaipan-verify-t7M7D8N6sZ/cvc4 --incremental --print-success --lang smt (13)] Forceful destruction successful, exit code 0