./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memcleanup.prp --file ../../sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test7-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (memcleanup) Using default analysis Version 9bd2c7ff Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d685691-8bfd-432b-b384-543dd14acf5d/bin/utaipan-verify-t7M7D8N6sZ/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d685691-8bfd-432b-b384-543dd14acf5d/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_8d685691-8bfd-432b-b384-543dd14acf5d/bin/utaipan-verify-t7M7D8N6sZ/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d685691-8bfd-432b-b384-543dd14acf5d/bin/utaipan-verify-t7M7D8N6sZ/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test7-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d685691-8bfd-432b-b384-543dd14acf5d/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_8d685691-8bfd-432b-b384-543dd14acf5d/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 89806bf5e92e08240ee093afcceea93b900865db28253b34ac5f2402fc0c0eb8 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 05:21:09,213 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 05:21:09,286 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d685691-8bfd-432b-b384-543dd14acf5d/bin/utaipan-verify-t7M7D8N6sZ/config/svcomp-MemCleanup-32bit-Taipan_Default.epf [2023-11-19 05:21:09,292 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 05:21:09,293 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 05:21:09,320 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 05:21:09,321 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 05:21:09,321 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 05:21:09,322 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 05:21:09,323 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 05:21:09,323 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-19 05:21:09,324 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-19 05:21:09,325 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-19 05:21:09,325 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-19 05:21:09,326 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-19 05:21:09,326 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-19 05:21:09,327 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-19 05:21:09,327 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-19 05:21:09,328 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-19 05:21:09,329 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-19 05:21:09,329 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-19 05:21:09,330 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-19 05:21:09,331 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-19 05:21:09,331 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-19 05:21:09,332 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 05:21:09,332 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-19 05:21:09,333 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-19 05:21:09,333 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 05:21:09,334 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-19 05:21:09,334 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 05:21:09,335 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-19 05:21:09,335 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-19 05:21:09,336 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-19 05:21:09,336 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 05:21:09,337 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-19 05:21:09,337 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-19 05:21:09,337 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-19 05:21:09,338 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-19 05:21:09,338 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-19 05:21:09,341 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 05:21:09,342 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 05:21:09,342 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 05:21:09,343 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 05:21:09,343 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 05:21:09,344 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 05:21:09,344 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-19 05:21:09,344 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 05:21:09,345 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-19 05:21:09,345 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 05:21:09,345 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_8d685691-8bfd-432b-b384-543dd14acf5d/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d685691-8bfd-432b-b384-543dd14acf5d/bin/utaipan-verify-t7M7D8N6sZ Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-memcleanup) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 89806bf5e92e08240ee093afcceea93b900865db28253b34ac5f2402fc0c0eb8 [2023-11-19 05:21:09,603 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 05:21:09,633 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 05:21:09,635 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 05:21:09,637 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 05:21:09,637 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 05:21:09,639 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d685691-8bfd-432b-b384-543dd14acf5d/bin/utaipan-verify-t7M7D8N6sZ/../../sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test7-1.i [2023-11-19 05:21:12,750 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 05:21:13,133 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 05:21:13,134 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d685691-8bfd-432b-b384-543dd14acf5d/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test7-1.i [2023-11-19 05:21:13,154 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d685691-8bfd-432b-b384-543dd14acf5d/bin/utaipan-verify-t7M7D8N6sZ/data/7b166bd15/b8097778313c474fa181d3ba8973c1b0/FLAGd9a449acf [2023-11-19 05:21:13,169 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d685691-8bfd-432b-b384-543dd14acf5d/bin/utaipan-verify-t7M7D8N6sZ/data/7b166bd15/b8097778313c474fa181d3ba8973c1b0 [2023-11-19 05:21:13,172 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 05:21:13,174 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 05:21:13,175 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 05:21:13,175 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 05:21:13,181 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 05:21:13,182 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 05:21:13" (1/1) ... [2023-11-19 05:21:13,183 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5e2c29ff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:21:13, skipping insertion in model container [2023-11-19 05:21:13,184 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 05:21:13" (1/1) ... [2023-11-19 05:21:13,256 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 05:21:13,950 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 05:21:13,999 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 05:21:14,001 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@3649d9ea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:21:14, skipping insertion in model container [2023-11-19 05:21:14,001 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 05:21:14,002 INFO L186 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2023-11-19 05:21:14,004 INFO L158 Benchmark]: Toolchain (without parser) took 828.85ms. Allocated memory was 117.4MB in the beginning and 155.2MB in the end (delta: 37.7MB). Free memory was 73.3MB in the beginning and 123.0MB in the end (delta: -49.7MB). Peak memory consumption was 27.5MB. Max. memory is 16.1GB. [2023-11-19 05:21:14,006 INFO L158 Benchmark]: CDTParser took 0.24ms. Allocated memory is still 117.4MB. Free memory is still 64.2MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-19 05:21:14,008 INFO L158 Benchmark]: CACSL2BoogieTranslator took 826.42ms. Allocated memory was 117.4MB in the beginning and 155.2MB in the end (delta: 37.7MB). Free memory was 73.2MB in the beginning and 123.0MB in the end (delta: -49.8MB). Peak memory consumption was 27.5MB. Max. memory is 16.1GB. [2023-11-19 05:21:14,010 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24ms. Allocated memory is still 117.4MB. Free memory is still 64.2MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 826.42ms. Allocated memory was 117.4MB in the beginning and 155.2MB in the end (delta: 37.7MB). Free memory was 73.2MB in the beginning and 123.0MB in the end (delta: -49.8MB). Peak memory consumption was 27.5MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 716]: Unsupported Syntax Found a cast between two array/pointer types of different sizes while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d685691-8bfd-432b-b384-543dd14acf5d/bin/utaipan-verify-t7M7D8N6sZ/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d685691-8bfd-432b-b384-543dd14acf5d/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_8d685691-8bfd-432b-b384-543dd14acf5d/bin/utaipan-verify-t7M7D8N6sZ/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d685691-8bfd-432b-b384-543dd14acf5d/bin/utaipan-verify-t7M7D8N6sZ/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test7-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d685691-8bfd-432b-b384-543dd14acf5d/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_8d685691-8bfd-432b-b384-543dd14acf5d/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 89806bf5e92e08240ee093afcceea93b900865db28253b34ac5f2402fc0c0eb8 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 05:21:16,414 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 05:21:16,496 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d685691-8bfd-432b-b384-543dd14acf5d/bin/utaipan-verify-t7M7D8N6sZ/config/svcomp-MemCleanup-32bit-Taipan_Bitvector.epf [2023-11-19 05:21:16,502 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 05:21:16,503 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 05:21:16,532 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 05:21:16,533 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 05:21:16,534 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 05:21:16,535 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 05:21:16,535 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 05:21:16,536 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-19 05:21:16,536 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-19 05:21:16,537 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-19 05:21:16,537 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-19 05:21:16,538 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-19 05:21:16,539 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-19 05:21:16,539 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-19 05:21:16,540 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-19 05:21:16,541 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 05:21:16,541 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-19 05:21:16,542 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-19 05:21:16,543 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 05:21:16,543 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-19 05:21:16,544 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 05:21:16,544 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-19 05:21:16,545 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-19 05:21:16,545 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-19 05:21:16,546 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 05:21:16,547 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-19 05:21:16,547 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-19 05:21:16,548 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-11-19 05:21:16,548 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-11-19 05:21:16,549 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-19 05:21:16,549 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-19 05:21:16,550 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-19 05:21:16,550 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 05:21:16,551 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 05:21:16,551 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-19 05:21:16,552 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 05:21:16,552 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 05:21:16,553 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 05:21:16,553 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 05:21:16,554 INFO L153 SettingsManager]: * Trace refinement strategy=WALRUS [2023-11-19 05:21:16,554 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-11-19 05:21:16,554 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-19 05:21:16,555 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 05:21:16,555 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_8d685691-8bfd-432b-b384-543dd14acf5d/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d685691-8bfd-432b-b384-543dd14acf5d/bin/utaipan-verify-t7M7D8N6sZ Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-memcleanup) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 89806bf5e92e08240ee093afcceea93b900865db28253b34ac5f2402fc0c0eb8 [2023-11-19 05:21:16,902 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 05:21:16,930 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 05:21:16,933 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 05:21:16,934 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 05:21:16,936 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 05:21:16,938 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d685691-8bfd-432b-b384-543dd14acf5d/bin/utaipan-verify-t7M7D8N6sZ/../../sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test7-1.i [2023-11-19 05:21:20,107 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 05:21:20,478 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 05:21:20,481 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d685691-8bfd-432b-b384-543dd14acf5d/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test7-1.i [2023-11-19 05:21:20,508 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d685691-8bfd-432b-b384-543dd14acf5d/bin/utaipan-verify-t7M7D8N6sZ/data/43e77ac63/77b3e76d3f4a4ab89a5c3564353a520c/FLAGf510ee35a [2023-11-19 05:21:20,530 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d685691-8bfd-432b-b384-543dd14acf5d/bin/utaipan-verify-t7M7D8N6sZ/data/43e77ac63/77b3e76d3f4a4ab89a5c3564353a520c [2023-11-19 05:21:20,537 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 05:21:20,539 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 05:21:20,541 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 05:21:20,542 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 05:21:20,547 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 05:21:20,551 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 05:21:20" (1/1) ... [2023-11-19 05:21:20,552 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5f06fea1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:21:20, skipping insertion in model container [2023-11-19 05:21:20,553 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 05:21:20" (1/1) ... [2023-11-19 05:21:20,627 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 05:21:21,271 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 05:21:21,285 INFO L199 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2023-11-19 05:21:21,298 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 05:21:21,414 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 05:21:21,420 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 05:21:21,528 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 05:21:21,593 WARN L675 CHandler]: The function memcmp is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 05:21:21,602 INFO L206 MainTranslator]: Completed translation [2023-11-19 05:21:21,603 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:21:21 WrapperNode [2023-11-19 05:21:21,603 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 05:21:21,604 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 05:21:21,604 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 05:21:21,605 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 05:21:21,612 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:21:21" (1/1) ... [2023-11-19 05:21:21,649 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:21:21" (1/1) ... [2023-11-19 05:21:21,716 INFO L138 Inliner]: procedures = 179, calls = 280, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 1002 [2023-11-19 05:21:21,725 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 05:21:21,726 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 05:21:21,726 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 05:21:21,726 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 05:21:21,736 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:21:21" (1/1) ... [2023-11-19 05:21:21,737 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:21:21" (1/1) ... [2023-11-19 05:21:21,749 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:21:21" (1/1) ... [2023-11-19 05:21:21,750 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:21:21" (1/1) ... [2023-11-19 05:21:21,809 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:21:21" (1/1) ... [2023-11-19 05:21:21,822 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:21:21" (1/1) ... [2023-11-19 05:21:21,828 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:21:21" (1/1) ... [2023-11-19 05:21:21,834 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:21:21" (1/1) ... [2023-11-19 05:21:21,846 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 05:21:21,847 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 05:21:21,847 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 05:21:21,847 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 05:21:21,848 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:21:21" (1/1) ... [2023-11-19 05:21:21,856 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 05:21:21,875 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d685691-8bfd-432b-b384-543dd14acf5d/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 05:21:21,890 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d685691-8bfd-432b-b384-543dd14acf5d/bin/utaipan-verify-t7M7D8N6sZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 05:21:21,929 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d685691-8bfd-432b-b384-543dd14acf5d/bin/utaipan-verify-t7M7D8N6sZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 05:21:21,940 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-11-19 05:21:21,941 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-11-19 05:21:21,941 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2023-11-19 05:21:21,941 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2023-11-19 05:21:21,941 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2023-11-19 05:21:21,943 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2023-11-19 05:21:21,944 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-19 05:21:21,944 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 05:21:21,944 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-19 05:21:21,945 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-19 05:21:21,945 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2023-11-19 05:21:21,945 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-19 05:21:21,945 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-19 05:21:21,945 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2023-11-19 05:21:21,946 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2023-11-19 05:21:21,947 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 05:21:21,947 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 05:21:22,213 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 05:21:22,220 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 05:21:29,393 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 05:21:29,404 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 05:21:29,404 INFO L302 CfgBuilder]: Removed 63 assume(true) statements. [2023-11-19 05:21:29,410 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 05:21:29 BoogieIcfgContainer [2023-11-19 05:21:29,410 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 05:21:29,413 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 05:21:29,413 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 05:21:29,416 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 05:21:29,417 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 05:21:20" (1/3) ... [2023-11-19 05:21:29,417 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@445909ce and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 05:21:29, skipping insertion in model container [2023-11-19 05:21:29,418 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:21:21" (2/3) ... [2023-11-19 05:21:29,418 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@445909ce and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 05:21:29, skipping insertion in model container [2023-11-19 05:21:29,418 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 05:21:29" (3/3) ... [2023-11-19 05:21:29,420 INFO L112 eAbstractionObserver]: Analyzing ICFG uthash_FNV_test7-1.i [2023-11-19 05:21:29,440 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 05:21:29,440 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-11-19 05:21:29,493 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 05:21:29,501 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;@2dc7d99c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-19 05:21:29,501 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-11-19 05:21:29,507 INFO L276 IsEmpty]: Start isEmpty. Operand has 197 states, 187 states have (on average 1.6684491978609626) internal successors, (312), 190 states have internal predecessors, (312), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2023-11-19 05:21:29,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2023-11-19 05:21:29,515 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:21:29,516 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 05:21:29,516 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2023-11-19 05:21:29,525 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:21:29,525 INFO L85 PathProgramCache]: Analyzing trace with hash -500280785, now seen corresponding path program 1 times [2023-11-19 05:21:29,539 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-19 05:21:29,539 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [92570284] [2023-11-19 05:21:29,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:21:29,540 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 05:21:29,540 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d685691-8bfd-432b-b384-543dd14acf5d/bin/utaipan-verify-t7M7D8N6sZ/mathsat [2023-11-19 05:21:29,543 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d685691-8bfd-432b-b384-543dd14acf5d/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 05:21:29,545 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d685691-8bfd-432b-b384-543dd14acf5d/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 05:21:29,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:21:29,759 INFO L262 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 1 conjunts are in the unsatisfiable core [2023-11-19 05:21:29,765 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 05:21:29,784 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 05:21:29,785 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 05:21:29,785 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-19 05:21:29,786 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [92570284] [2023-11-19 05:21:29,786 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [92570284] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:21:29,787 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:21:29,787 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 05:21:29,789 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [832257570] [2023-11-19 05:21:29,789 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:21:29,794 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-19 05:21:29,794 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-19 05:21:29,824 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-19 05:21:29,825 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-19 05:21:29,828 INFO L87 Difference]: Start difference. First operand has 197 states, 187 states have (on average 1.6684491978609626) internal successors, (312), 190 states have internal predecessors, (312), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) Second operand has 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 05:21:29,862 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:21:29,863 INFO L93 Difference]: Finished difference Result 194 states and 249 transitions. [2023-11-19 05:21:29,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-19 05:21:29,865 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 05:21:29,865 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:21:29,875 INFO L225 Difference]: With dead ends: 194 [2023-11-19 05:21:29,876 INFO L226 Difference]: Without dead ends: 192 [2023-11-19 05:21:29,877 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 05:21:29,881 INFO L413 NwaCegarLoop]: 249 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, 249 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 05:21:29,882 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 249 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 05:21:29,900 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 192 states. [2023-11-19 05:21:29,926 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 192 to 192. [2023-11-19 05:21:29,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 192 states, 184 states have (on average 1.298913043478261) internal successors, (239), 186 states have internal predecessors, (239), 5 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-19 05:21:29,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 192 states to 192 states and 247 transitions. [2023-11-19 05:21:29,933 INFO L78 Accepts]: Start accepts. Automaton has 192 states and 247 transitions. Word has length 9 [2023-11-19 05:21:29,934 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:21:29,934 INFO L495 AbstractCegarLoop]: Abstraction has 192 states and 247 transitions. [2023-11-19 05:21:29,934 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 05:21:29,935 INFO L276 IsEmpty]: Start isEmpty. Operand 192 states and 247 transitions. [2023-11-19 05:21:29,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2023-11-19 05:21:29,935 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:21:29,936 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 05:21:29,941 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d685691-8bfd-432b-b384-543dd14acf5d/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)] Forceful destruction successful, exit code 0 [2023-11-19 05:21:30,139 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d685691-8bfd-432b-b384-543dd14acf5d/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 05:21:30,139 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2023-11-19 05:21:30,140 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:21:30,140 INFO L85 PathProgramCache]: Analyzing trace with hash -1492777235, now seen corresponding path program 1 times [2023-11-19 05:21:30,141 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-19 05:21:30,141 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [83903535] [2023-11-19 05:21:30,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:21:30,141 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 05:21:30,142 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d685691-8bfd-432b-b384-543dd14acf5d/bin/utaipan-verify-t7M7D8N6sZ/mathsat [2023-11-19 05:21:30,143 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d685691-8bfd-432b-b384-543dd14acf5d/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 05:21:30,145 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d685691-8bfd-432b-b384-543dd14acf5d/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 05:21:30,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:21:30,390 INFO L262 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-19 05:21:30,394 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 05:21:30,459 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-19 05:21:30,461 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-19 05:21:30,475 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 33 treesize of output 31 [2023-11-19 05:21:30,557 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-19 05:21:30,558 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 62 treesize of output 22 [2023-11-19 05:21:30,599 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 05:21:30,599 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 05:21:30,600 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-19 05:21:30,601 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [83903535] [2023-11-19 05:21:30,601 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [83903535] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:21:30,602 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:21:30,602 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 05:21:30,602 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [456472729] [2023-11-19 05:21:30,602 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:21:30,604 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 05:21:30,604 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-19 05:21:30,605 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 05:21:30,607 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-19 05:21:30,608 INFO L87 Difference]: Start difference. First operand 192 states and 247 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 05:21:34,521 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-19 05:21:36,957 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.27s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-19 05:21:37,315 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:21:37,316 INFO L93 Difference]: Finished difference Result 278 states and 360 transitions. [2023-11-19 05:21:37,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 05:21:37,317 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 05:21:37,317 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:21:37,320 INFO L225 Difference]: With dead ends: 278 [2023-11-19 05:21:37,320 INFO L226 Difference]: Without dead ends: 278 [2023-11-19 05:21:37,320 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 05:21:37,322 INFO L413 NwaCegarLoop]: 229 mSDtfsCounter, 104 mSDsluCounter, 396 mSDsCounter, 0 mSdLazyCounter, 138 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 104 SdHoareTripleChecker+Valid, 625 SdHoareTripleChecker+Invalid, 140 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 138 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.6s IncrementalHoareTripleChecker+Time [2023-11-19 05:21:37,322 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [104 Valid, 625 Invalid, 140 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 138 Invalid, 1 Unknown, 0 Unchecked, 6.6s Time] [2023-11-19 05:21:37,324 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 278 states. [2023-11-19 05:21:37,338 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 278 to 194. [2023-11-19 05:21:37,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 194 states, 186 states have (on average 1.2956989247311828) internal successors, (241), 188 states have internal predecessors, (241), 5 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-19 05:21:37,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 194 states to 194 states and 249 transitions. [2023-11-19 05:21:37,342 INFO L78 Accepts]: Start accepts. Automaton has 194 states and 249 transitions. Word has length 11 [2023-11-19 05:21:37,342 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:21:37,342 INFO L495 AbstractCegarLoop]: Abstraction has 194 states and 249 transitions. [2023-11-19 05:21:37,342 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 05:21:37,343 INFO L276 IsEmpty]: Start isEmpty. Operand 194 states and 249 transitions. [2023-11-19 05:21:37,345 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2023-11-19 05:21:37,346 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:21:37,346 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 05:21:37,364 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d685691-8bfd-432b-b384-543dd14acf5d/bin/utaipan-verify-t7M7D8N6sZ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2023-11-19 05:21:37,552 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d685691-8bfd-432b-b384-543dd14acf5d/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 05:21:37,553 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2023-11-19 05:21:37,553 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:21:37,553 INFO L85 PathProgramCache]: Analyzing trace with hash -638130017, now seen corresponding path program 1 times [2023-11-19 05:21:37,555 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-19 05:21:37,555 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2027696786] [2023-11-19 05:21:37,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:21:37,555 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-19 05:21:37,555 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d685691-8bfd-432b-b384-543dd14acf5d/bin/utaipan-verify-t7M7D8N6sZ/mathsat [2023-11-19 05:21:37,559 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d685691-8bfd-432b-b384-543dd14acf5d/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 05:21:37,561 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d685691-8bfd-432b-b384-543dd14acf5d/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 05:21:38,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:21:38,029 INFO L262 TraceCheckSpWp]: Trace formula consists of 354 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-19 05:21:38,034 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 05:21:38,075 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 05:21:38,076 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 05:21:38,076 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-19 05:21:38,076 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2027696786] [2023-11-19 05:21:38,077 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2027696786] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:21:38,077 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:21:38,077 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 05:21:38,077 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [598029129] [2023-11-19 05:21:38,077 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:21:38,078 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 05:21:38,078 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-19 05:21:38,079 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 05:21:38,079 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-19 05:21:38,080 INFO L87 Difference]: Start difference. First operand 194 states and 249 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 05:21:38,257 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:21:38,257 INFO L93 Difference]: Finished difference Result 198 states and 245 transitions. [2023-11-19 05:21:38,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 05:21:38,258 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 05:21:38,258 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:21:38,260 INFO L225 Difference]: With dead ends: 198 [2023-11-19 05:21:38,260 INFO L226 Difference]: Without dead ends: 198 [2023-11-19 05:21:38,261 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 05:21:38,262 INFO L413 NwaCegarLoop]: 218 mSDtfsCounter, 36 mSDsluCounter, 410 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 628 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 05:21:38,263 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 628 Invalid, 62 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-19 05:21:38,264 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 198 states. [2023-11-19 05:21:38,274 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 198 to 197. [2023-11-19 05:21:38,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 197 states, 189 states have (on average 1.2486772486772486) internal successors, (236), 191 states have internal predecessors, (236), 5 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-19 05:21:38,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 197 states to 197 states and 244 transitions. [2023-11-19 05:21:38,277 INFO L78 Accepts]: Start accepts. Automaton has 197 states and 244 transitions. Word has length 67 [2023-11-19 05:21:38,278 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:21:38,278 INFO L495 AbstractCegarLoop]: Abstraction has 197 states and 244 transitions. [2023-11-19 05:21:38,278 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 05:21:38,278 INFO L276 IsEmpty]: Start isEmpty. Operand 197 states and 244 transitions. [2023-11-19 05:21:38,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2023-11-19 05:21:38,281 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:21:38,282 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 05:21:38,296 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d685691-8bfd-432b-b384-543dd14acf5d/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 05:21:38,490 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d685691-8bfd-432b-b384-543dd14acf5d/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 05:21:38,490 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2023-11-19 05:21:38,491 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:21:38,491 INFO L85 PathProgramCache]: Analyzing trace with hash 1225597715, now seen corresponding path program 1 times [2023-11-19 05:21:38,492 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-19 05:21:38,492 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1081189360] [2023-11-19 05:21:38,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:21:38,493 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-19 05:21:38,493 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d685691-8bfd-432b-b384-543dd14acf5d/bin/utaipan-verify-t7M7D8N6sZ/mathsat [2023-11-19 05:21:38,494 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d685691-8bfd-432b-b384-543dd14acf5d/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 05:21:38,497 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d685691-8bfd-432b-b384-543dd14acf5d/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 05:21:38,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:21:38,985 INFO L262 TraceCheckSpWp]: Trace formula consists of 348 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-19 05:21:38,990 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 05:21:39,454 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 05:21:39,454 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 05:21:39,454 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-19 05:21:39,455 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1081189360] [2023-11-19 05:21:39,455 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1081189360] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:21:39,455 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:21:39,455 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 05:21:39,455 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1331004057] [2023-11-19 05:21:39,455 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:21:39,456 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 05:21:39,456 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-19 05:21:39,457 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 05:21:39,457 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 05:21:39,457 INFO L87 Difference]: Start difference. First operand 197 states and 244 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 05:21:40,376 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:21:40,377 INFO L93 Difference]: Finished difference Result 313 states and 386 transitions. [2023-11-19 05:21:40,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 05:21:40,377 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 05:21:40,378 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:21:40,380 INFO L225 Difference]: With dead ends: 313 [2023-11-19 05:21:40,380 INFO L226 Difference]: Without dead ends: 313 [2023-11-19 05:21:40,380 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 05:21:40,381 INFO L413 NwaCegarLoop]: 283 mSDtfsCounter, 102 mSDsluCounter, 205 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 104 SdHoareTripleChecker+Valid, 488 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 05:21:40,382 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [104 Valid, 488 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-11-19 05:21:40,383 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 313 states. [2023-11-19 05:21:40,395 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 313 to 305. [2023-11-19 05:21:40,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 305 states, 297 states have (on average 1.245791245791246) internal successors, (370), 299 states have internal predecessors, (370), 5 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-19 05:21:40,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 305 states to 305 states and 378 transitions. [2023-11-19 05:21:40,398 INFO L78 Accepts]: Start accepts. Automaton has 305 states and 378 transitions. Word has length 67 [2023-11-19 05:21:40,398 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:21:40,399 INFO L495 AbstractCegarLoop]: Abstraction has 305 states and 378 transitions. [2023-11-19 05:21:40,399 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 05:21:40,399 INFO L276 IsEmpty]: Start isEmpty. Operand 305 states and 378 transitions. [2023-11-19 05:21:40,402 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2023-11-19 05:21:40,403 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:21:40,403 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 05:21:40,416 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d685691-8bfd-432b-b384-543dd14acf5d/bin/utaipan-verify-t7M7D8N6sZ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2023-11-19 05:21:40,611 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d685691-8bfd-432b-b384-543dd14acf5d/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 05:21:40,611 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2023-11-19 05:21:40,612 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:21:40,612 INFO L85 PathProgramCache]: Analyzing trace with hash 893651480, now seen corresponding path program 1 times [2023-11-19 05:21:40,613 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-19 05:21:40,613 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1574055376] [2023-11-19 05:21:40,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:21:40,614 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 05:21:40,614 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d685691-8bfd-432b-b384-543dd14acf5d/bin/utaipan-verify-t7M7D8N6sZ/mathsat [2023-11-19 05:21:40,615 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d685691-8bfd-432b-b384-543dd14acf5d/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 05:21:40,618 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d685691-8bfd-432b-b384-543dd14acf5d/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 05:21:41,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:21:41,278 INFO L262 TraceCheckSpWp]: Trace formula consists of 479 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-19 05:21:41,282 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 05:21:41,343 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 05:21:41,343 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 05:21:41,343 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-19 05:21:41,343 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1574055376] [2023-11-19 05:21:41,344 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1574055376] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:21:41,344 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:21:41,344 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 05:21:41,344 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [757801079] [2023-11-19 05:21:41,344 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:21:41,345 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 05:21:41,345 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-19 05:21:41,346 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 05:21:41,347 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-19 05:21:41,347 INFO L87 Difference]: Start difference. First operand 305 states and 378 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 05:21:41,411 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:21:41,412 INFO L93 Difference]: Finished difference Result 308 states and 382 transitions. [2023-11-19 05:21:41,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 05:21:41,413 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 05:21:41,413 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:21:41,417 INFO L225 Difference]: With dead ends: 308 [2023-11-19 05:21:41,417 INFO L226 Difference]: Without dead ends: 308 [2023-11-19 05:21:41,417 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 05:21:41,418 INFO L413 NwaCegarLoop]: 233 mSDtfsCounter, 2 mSDsluCounter, 462 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 695 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 05:21:41,419 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 695 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 05:21:41,420 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 308 states. [2023-11-19 05:21:41,442 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 308 to 308. [2023-11-19 05:21:41,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 308 states, 299 states have (on average 1.2474916387959867) internal successors, (373), 302 states have internal predecessors, (373), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2023-11-19 05:21:41,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 308 states to 308 states and 382 transitions. [2023-11-19 05:21:41,446 INFO L78 Accepts]: Start accepts. Automaton has 308 states and 382 transitions. Word has length 82 [2023-11-19 05:21:41,446 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:21:41,446 INFO L495 AbstractCegarLoop]: Abstraction has 308 states and 382 transitions. [2023-11-19 05:21:41,447 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 05:21:41,447 INFO L276 IsEmpty]: Start isEmpty. Operand 308 states and 382 transitions. [2023-11-19 05:21:41,450 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2023-11-19 05:21:41,451 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:21:41,451 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 05:21:41,464 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d685691-8bfd-432b-b384-543dd14acf5d/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)] Forceful destruction successful, exit code 0 [2023-11-19 05:21:41,661 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d685691-8bfd-432b-b384-543dd14acf5d/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 05:21:41,662 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2023-11-19 05:21:41,662 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:21:41,663 INFO L85 PathProgramCache]: Analyzing trace with hash 1688139158, now seen corresponding path program 1 times [2023-11-19 05:21:41,663 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-19 05:21:41,664 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1885551884] [2023-11-19 05:21:41,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:21:41,664 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 05:21:41,664 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d685691-8bfd-432b-b384-543dd14acf5d/bin/utaipan-verify-t7M7D8N6sZ/mathsat [2023-11-19 05:21:41,665 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d685691-8bfd-432b-b384-543dd14acf5d/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 05:21:41,666 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d685691-8bfd-432b-b384-543dd14acf5d/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 05:21:42,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:21:42,311 INFO L262 TraceCheckSpWp]: Trace formula consists of 501 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-19 05:21:42,315 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 05:21:42,383 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 05:21:42,383 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 05:21:42,567 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 05:21:42,568 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-19 05:21:42,568 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1885551884] [2023-11-19 05:21:42,568 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1885551884] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 05:21:42,568 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [172882130] [2023-11-19 05:21:42,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:21:42,569 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-11-19 05:21:42,569 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d685691-8bfd-432b-b384-543dd14acf5d/bin/utaipan-verify-t7M7D8N6sZ/cvc4 [2023-11-19 05:21:42,582 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d685691-8bfd-432b-b384-543dd14acf5d/bin/utaipan-verify-t7M7D8N6sZ/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-11-19 05:21:42,610 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d685691-8bfd-432b-b384-543dd14acf5d/bin/utaipan-verify-t7M7D8N6sZ/cvc4 --incremental --print-success --lang smt (8)] Waiting until timeout for monitored process [2023-11-19 05:21:43,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:21:43,342 INFO L262 TraceCheckSpWp]: Trace formula consists of 501 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-19 05:21:43,346 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 05:21:43,718 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 05:21:43,719 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 05:21:43,719 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [172882130] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:21:43,719 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-11-19 05:21:43,719 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5, 5] total 10 [2023-11-19 05:21:43,719 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1725836229] [2023-11-19 05:21:43,720 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:21:43,720 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 05:21:43,720 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-19 05:21:43,721 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 05:21:43,721 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2023-11-19 05:21:43,721 INFO L87 Difference]: Start difference. First operand 308 states and 382 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 05:21:46,160 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-19 05:21:48,180 WARN L539 Checker$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 05:21:50,394 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:21:50,395 INFO L93 Difference]: Finished difference Result 396 states and 497 transitions. [2023-11-19 05:21:50,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 05:21:50,398 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 05:21:50,399 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:21:50,405 INFO L225 Difference]: With dead ends: 396 [2023-11-19 05:21:50,405 INFO L226 Difference]: Without dead ends: 396 [2023-11-19 05:21:50,408 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 05:21:50,409 INFO L413 NwaCegarLoop]: 232 mSDtfsCounter, 465 mSDsluCounter, 171 mSDsCounter, 0 mSdLazyCounter, 77 mSolverCounterSat, 4 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 465 SdHoareTripleChecker+Valid, 403 SdHoareTripleChecker+Invalid, 83 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 77 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.6s IncrementalHoareTripleChecker+Time [2023-11-19 05:21:50,409 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [465 Valid, 403 Invalid, 83 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 77 Invalid, 2 Unknown, 0 Unchecked, 6.6s Time] [2023-11-19 05:21:50,411 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 396 states. [2023-11-19 05:21:50,422 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 396 to 393. [2023-11-19 05:21:50,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 393 states, 384 states have (on average 1.2630208333333333) internal successors, (485), 387 states have internal predecessors, (485), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2023-11-19 05:21:50,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 393 states to 393 states and 494 transitions. [2023-11-19 05:21:50,426 INFO L78 Accepts]: Start accepts. Automaton has 393 states and 494 transitions. Word has length 84 [2023-11-19 05:21:50,426 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:21:50,426 INFO L495 AbstractCegarLoop]: Abstraction has 393 states and 494 transitions. [2023-11-19 05:21:50,426 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 05:21:50,427 INFO L276 IsEmpty]: Start isEmpty. Operand 393 states and 494 transitions. [2023-11-19 05:21:50,430 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2023-11-19 05:21:50,430 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:21:50,431 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] [2023-11-19 05:21:50,440 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d685691-8bfd-432b-b384-543dd14acf5d/bin/utaipan-verify-t7M7D8N6sZ/cvc4 --incremental --print-success --lang smt (8)] Forceful destruction successful, exit code 0 [2023-11-19 05:21:50,642 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d685691-8bfd-432b-b384-543dd14acf5d/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 05:21:50,835 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d685691-8bfd-432b-b384-543dd14acf5d/bin/utaipan-verify-t7M7D8N6sZ/cvc4 --incremental --print-success --lang smt,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d685691-8bfd-432b-b384-543dd14acf5d/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 05:21:50,836 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2023-11-19 05:21:50,836 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:21:50,836 INFO L85 PathProgramCache]: Analyzing trace with hash 792753998, now seen corresponding path program 1 times [2023-11-19 05:21:50,837 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-19 05:21:50,837 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1162720210] [2023-11-19 05:21:50,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:21:50,837 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 05:21:50,837 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d685691-8bfd-432b-b384-543dd14acf5d/bin/utaipan-verify-t7M7D8N6sZ/mathsat [2023-11-19 05:21:50,838 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d685691-8bfd-432b-b384-543dd14acf5d/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 05:21:50,841 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d685691-8bfd-432b-b384-543dd14acf5d/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 05:21:51,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:21:51,444 INFO L262 TraceCheckSpWp]: Trace formula consists of 501 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-19 05:21:51,448 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 05:21:51,492 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 05:21:51,492 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 05:21:51,614 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 05:21:51,614 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-19 05:21:51,614 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1162720210] [2023-11-19 05:21:51,614 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1162720210] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 05:21:51,614 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1375286765] [2023-11-19 05:21:51,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:21:51,615 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-11-19 05:21:51,615 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d685691-8bfd-432b-b384-543dd14acf5d/bin/utaipan-verify-t7M7D8N6sZ/cvc4 [2023-11-19 05:21:51,616 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d685691-8bfd-432b-b384-543dd14acf5d/bin/utaipan-verify-t7M7D8N6sZ/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-11-19 05:21:51,628 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d685691-8bfd-432b-b384-543dd14acf5d/bin/utaipan-verify-t7M7D8N6sZ/cvc4 --incremental --print-success --lang smt (10)] Waiting until timeout for monitored process [2023-11-19 05:21:52,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:21:52,576 INFO L262 TraceCheckSpWp]: Trace formula consists of 501 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-19 05:21:52,579 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 05:21:52,602 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 05:21:52,602 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 05:21:52,668 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 05:21:52,668 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1375286765] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 05:21:52,668 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2052611733] [2023-11-19 05:21:52,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:21:52,669 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 05:21:52,669 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d685691-8bfd-432b-b384-543dd14acf5d/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 05:21:52,676 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d685691-8bfd-432b-b384-543dd14acf5d/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 05:21:52,704 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d685691-8bfd-432b-b384-543dd14acf5d/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-11-19 05:21:53,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:21:53,263 INFO L262 TraceCheckSpWp]: Trace formula consists of 501 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-19 05:21:53,266 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 05:21:53,302 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-19 05:21:53,302 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 05:21:53,456 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-19 05:21:53,456 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2052611733] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 05:21:53,456 INFO L185 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2023-11-19 05:21:53,457 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5, 5, 5, 5] total 11 [2023-11-19 05:21:53,457 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [537344689] [2023-11-19 05:21:53,457 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2023-11-19 05:21:53,458 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-19 05:21:53,458 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-19 05:21:53,459 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-19 05:21:53,459 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2023-11-19 05:21:53,460 INFO L87 Difference]: Start difference. First operand 393 states and 494 transitions. Second operand has 11 states, 11 states have (on average 8.545454545454545) internal successors, (94), 11 states have internal predecessors, (94), 2 states have call successors, (5), 2 states have call predecessors, (5), 5 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-11-19 05:21:53,972 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:21:53,973 INFO L93 Difference]: Finished difference Result 408 states and 516 transitions. [2023-11-19 05:21:53,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-19 05:21:53,974 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 8.545454545454545) internal successors, (94), 11 states have internal predecessors, (94), 2 states have call successors, (5), 2 states have call predecessors, (5), 5 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 85 [2023-11-19 05:21:53,974 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:21:53,977 INFO L225 Difference]: With dead ends: 408 [2023-11-19 05:21:53,977 INFO L226 Difference]: Without dead ends: 408 [2023-11-19 05:21:53,977 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 515 GetRequests, 495 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=156, Invalid=306, Unknown=0, NotChecked=0, Total=462 [2023-11-19 05:21:53,978 INFO L413 NwaCegarLoop]: 233 mSDtfsCounter, 18 mSDsluCounter, 1825 mSDsCounter, 0 mSdLazyCounter, 81 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 2058 SdHoareTripleChecker+Invalid, 88 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 81 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-19 05:21:53,979 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 2058 Invalid, 88 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 81 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-19 05:21:53,980 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 408 states. [2023-11-19 05:21:53,988 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 408 to 404. [2023-11-19 05:21:53,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 404 states, 394 states have (on average 1.2766497461928934) internal successors, (503), 397 states have internal predecessors, (503), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2023-11-19 05:21:53,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 404 states to 404 states and 512 transitions. [2023-11-19 05:21:53,992 INFO L78 Accepts]: Start accepts. Automaton has 404 states and 512 transitions. Word has length 85 [2023-11-19 05:21:53,992 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:21:53,992 INFO L495 AbstractCegarLoop]: Abstraction has 404 states and 512 transitions. [2023-11-19 05:21:53,992 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.545454545454545) internal successors, (94), 11 states have internal predecessors, (94), 2 states have call successors, (5), 2 states have call predecessors, (5), 5 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-11-19 05:21:53,993 INFO L276 IsEmpty]: Start isEmpty. Operand 404 states and 512 transitions. [2023-11-19 05:21:53,994 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2023-11-19 05:21:53,994 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:21:53,994 INFO L195 NwaCegarLoop]: trace histogram [8, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 05:21:54,022 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d685691-8bfd-432b-b384-543dd14acf5d/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-11-19 05:21:54,214 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d685691-8bfd-432b-b384-543dd14acf5d/bin/utaipan-verify-t7M7D8N6sZ/cvc4 --incremental --print-success --lang smt (10)] Forceful destruction successful, exit code 0 [2023-11-19 05:21:54,416 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d685691-8bfd-432b-b384-543dd14acf5d/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 05:21:54,608 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d685691-8bfd-432b-b384-543dd14acf5d/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d685691-8bfd-432b-b384-543dd14acf5d/bin/utaipan-verify-t7M7D8N6sZ/cvc4 --incremental --print-success --lang smt,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d685691-8bfd-432b-b384-543dd14acf5d/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 05:21:54,609 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2023-11-19 05:21:54,609 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:21:54,609 INFO L85 PathProgramCache]: Analyzing trace with hash 1411227404, now seen corresponding path program 2 times [2023-11-19 05:21:54,610 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-19 05:21:54,610 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1567856292] [2023-11-19 05:21:54,610 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-19 05:21:54,610 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 05:21:54,610 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d685691-8bfd-432b-b384-543dd14acf5d/bin/utaipan-verify-t7M7D8N6sZ/mathsat [2023-11-19 05:21:54,611 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d685691-8bfd-432b-b384-543dd14acf5d/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 05:21:54,612 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d685691-8bfd-432b-b384-543dd14acf5d/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 05:21:55,028 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-19 05:21:55,028 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-19 05:21:55,033 INFO L262 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-19 05:21:55,038 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 05:21:55,053 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-19 05:21:55,054 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-19 05:21:55,057 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 33 treesize of output 31 [2023-11-19 05:21:55,136 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-19 05:21:55,137 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 62 treesize of output 22 [2023-11-19 05:21:55,168 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2023-11-19 05:21:55,168 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 05:21:55,169 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-19 05:21:55,169 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1567856292] [2023-11-19 05:21:55,169 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1567856292] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:21:55,169 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:21:55,169 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 05:21:55,169 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [212051493] [2023-11-19 05:21:55,169 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:21:55,170 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 05:21:55,170 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-19 05:21:55,170 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 05:21:55,171 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-19 05:21:55,171 INFO L87 Difference]: Start difference. First operand 404 states and 512 transitions. Second operand has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 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 05:21:56,459 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.13s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-19 05:21:58,908 WARN L539 Checker$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 05:22:01,839 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.36s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-19 05:22:02,688 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:22:02,688 INFO L93 Difference]: Finished difference Result 482 states and 614 transitions. [2023-11-19 05:22:02,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 05:22:02,689 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 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 91 [2023-11-19 05:22:02,690 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:22:02,693 INFO L225 Difference]: With dead ends: 482 [2023-11-19 05:22:02,693 INFO L226 Difference]: Without dead ends: 482 [2023-11-19 05:22:02,693 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 88 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 05:22:02,694 INFO L413 NwaCegarLoop]: 219 mSDtfsCounter, 99 mSDsluCounter, 384 mSDsCounter, 0 mSdLazyCounter, 127 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 99 SdHoareTripleChecker+Valid, 603 SdHoareTripleChecker+Invalid, 129 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 127 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.5s IncrementalHoareTripleChecker+Time [2023-11-19 05:22:02,694 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [99 Valid, 603 Invalid, 129 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 127 Invalid, 1 Unknown, 0 Unchecked, 7.5s Time] [2023-11-19 05:22:02,696 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 482 states. [2023-11-19 05:22:02,707 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 482 to 406. [2023-11-19 05:22:02,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 406 states, 396 states have (on average 1.2752525252525253) internal successors, (505), 399 states have internal predecessors, (505), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2023-11-19 05:22:02,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 406 states to 406 states and 514 transitions. [2023-11-19 05:22:02,711 INFO L78 Accepts]: Start accepts. Automaton has 406 states and 514 transitions. Word has length 91 [2023-11-19 05:22:02,712 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:22:02,712 INFO L495 AbstractCegarLoop]: Abstraction has 406 states and 514 transitions. [2023-11-19 05:22:02,712 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 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 05:22:02,712 INFO L276 IsEmpty]: Start isEmpty. Operand 406 states and 514 transitions. [2023-11-19 05:22:02,714 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2023-11-19 05:22:02,714 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:22:02,715 INFO L195 NwaCegarLoop]: trace histogram [8, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 05:22:02,724 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d685691-8bfd-432b-b384-543dd14acf5d/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)] Ended with exit code 0 [2023-11-19 05:22:02,918 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d685691-8bfd-432b-b384-543dd14acf5d/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 05:22:02,919 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2023-11-19 05:22:02,919 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:22:02,919 INFO L85 PathProgramCache]: Analyzing trace with hash -1034230972, now seen corresponding path program 1 times [2023-11-19 05:22:02,920 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-19 05:22:02,920 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [451420614] [2023-11-19 05:22:02,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:22:02,921 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 05:22:02,921 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d685691-8bfd-432b-b384-543dd14acf5d/bin/utaipan-verify-t7M7D8N6sZ/mathsat [2023-11-19 05:22:02,922 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d685691-8bfd-432b-b384-543dd14acf5d/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 05:22:02,924 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d685691-8bfd-432b-b384-543dd14acf5d/bin/utaipan-verify-t7M7D8N6sZ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2023-11-19 05:22:03,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:22:03,734 INFO L262 TraceCheckSpWp]: Trace formula consists of 638 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-19 05:22:03,739 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 05:22:03,876 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 30 proven. 10 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-11-19 05:22:03,876 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 05:22:04,220 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 2 proven. 37 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-11-19 05:22:04,220 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-19 05:22:04,220 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [451420614] [2023-11-19 05:22:04,220 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [451420614] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 05:22:04,221 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [126488387] [2023-11-19 05:22:04,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:22:04,221 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-11-19 05:22:04,221 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d685691-8bfd-432b-b384-543dd14acf5d/bin/utaipan-verify-t7M7D8N6sZ/cvc4 [2023-11-19 05:22:04,225 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d685691-8bfd-432b-b384-543dd14acf5d/bin/utaipan-verify-t7M7D8N6sZ/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-11-19 05:22:04,228 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d685691-8bfd-432b-b384-543dd14acf5d/bin/utaipan-verify-t7M7D8N6sZ/cvc4 --incremental --print-success --lang smt (14)] Waiting until timeout for monitored process [2023-11-19 05:22:05,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:22:05,159 INFO L262 TraceCheckSpWp]: Trace formula consists of 638 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-19 05:22:05,163 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 05:22:05,238 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2023-11-19 05:22:05,238 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 05:22:05,238 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [126488387] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:22:05,239 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-11-19 05:22:05,239 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [8, 8] total 15 [2023-11-19 05:22:05,239 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [758649920] [2023-11-19 05:22:05,239 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:22:05,240 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 05:22:05,240 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-19 05:22:05,241 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 05:22:05,241 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=147, Unknown=0, NotChecked=0, Total=210 [2023-11-19 05:22:05,241 INFO L87 Difference]: Start difference. First operand 406 states and 514 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 05:22:05,403 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:22:05,405 INFO L93 Difference]: Finished difference Result 469 states and 577 transitions. [2023-11-19 05:22:05,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 05:22:05,406 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 135 [2023-11-19 05:22:05,406 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:22:05,409 INFO L225 Difference]: With dead ends: 469 [2023-11-19 05:22:05,410 INFO L226 Difference]: Without dead ends: 469 [2023-11-19 05:22:05,410 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 402 GetRequests, 389 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=63, Invalid=147, Unknown=0, NotChecked=0, Total=210 [2023-11-19 05:22:05,413 INFO L413 NwaCegarLoop]: 216 mSDtfsCounter, 8 mSDsluCounter, 201 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 417 SdHoareTripleChecker+Invalid, 70 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 05:22:05,413 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 417 Invalid, 70 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 05:22:05,416 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 469 states. [2023-11-19 05:22:05,425 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 469 to 466. [2023-11-19 05:22:05,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 466 states, 456 states have (on average 1.2390350877192982) internal successors, (565), 459 states have internal predecessors, (565), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2023-11-19 05:22:05,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 466 states to 466 states and 574 transitions. [2023-11-19 05:22:05,432 INFO L78 Accepts]: Start accepts. Automaton has 466 states and 574 transitions. Word has length 135 [2023-11-19 05:22:05,434 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:22:05,434 INFO L495 AbstractCegarLoop]: Abstraction has 466 states and 574 transitions. [2023-11-19 05:22:05,434 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 05:22:05,434 INFO L276 IsEmpty]: Start isEmpty. Operand 466 states and 574 transitions. [2023-11-19 05:22:05,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2023-11-19 05:22:05,436 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:22:05,437 INFO L195 NwaCegarLoop]: trace histogram [8, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 05:22:05,453 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d685691-8bfd-432b-b384-543dd14acf5d/bin/utaipan-verify-t7M7D8N6sZ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2023-11-19 05:22:05,654 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d685691-8bfd-432b-b384-543dd14acf5d/bin/utaipan-verify-t7M7D8N6sZ/cvc4 --incremental --print-success --lang smt (14)] Forceful destruction successful, exit code 0 [2023-11-19 05:22:05,848 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d685691-8bfd-432b-b384-543dd14acf5d/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=3,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d685691-8bfd-432b-b384-543dd14acf5d/bin/utaipan-verify-t7M7D8N6sZ/cvc4 --incremental --print-success --lang smt [2023-11-19 05:22:05,848 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2023-11-19 05:22:05,849 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:22:05,849 INFO L85 PathProgramCache]: Analyzing trace with hash 129141832, now seen corresponding path program 1 times [2023-11-19 05:22:05,849 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-19 05:22:05,849 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1364434647] [2023-11-19 05:22:05,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:22:05,850 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 05:22:05,850 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d685691-8bfd-432b-b384-543dd14acf5d/bin/utaipan-verify-t7M7D8N6sZ/mathsat [2023-11-19 05:22:05,851 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d685691-8bfd-432b-b384-543dd14acf5d/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 05:22:05,853 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d685691-8bfd-432b-b384-543dd14acf5d/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 (15)] Waiting until timeout for monitored process [2023-11-19 05:22:06,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:22:06,683 INFO L262 TraceCheckSpWp]: Trace formula consists of 640 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-19 05:22:06,686 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 05:22:06,824 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 30 proven. 10 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-11-19 05:22:06,824 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 05:22:07,128 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 2 proven. 37 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-11-19 05:22:07,128 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-19 05:22:07,128 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1364434647] [2023-11-19 05:22:07,129 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1364434647] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 05:22:07,129 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [201700634] [2023-11-19 05:22:07,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:22:07,129 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-11-19 05:22:07,129 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d685691-8bfd-432b-b384-543dd14acf5d/bin/utaipan-verify-t7M7D8N6sZ/cvc4 [2023-11-19 05:22:07,134 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d685691-8bfd-432b-b384-543dd14acf5d/bin/utaipan-verify-t7M7D8N6sZ/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-11-19 05:22:07,135 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d685691-8bfd-432b-b384-543dd14acf5d/bin/utaipan-verify-t7M7D8N6sZ/cvc4 --incremental --print-success --lang smt (16)] Waiting until timeout for monitored process [2023-11-19 05:22:08,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:22:08,112 INFO L262 TraceCheckSpWp]: Trace formula consists of 640 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-19 05:22:08,116 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 05:22:08,204 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2023-11-19 05:22:08,205 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 05:22:08,205 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [201700634] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:22:08,205 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-11-19 05:22:08,205 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [8, 8] total 16 [2023-11-19 05:22:08,206 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [26548185] [2023-11-19 05:22:08,206 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:22:08,206 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 05:22:08,206 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-19 05:22:08,207 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 05:22:08,208 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2023-11-19 05:22:08,208 INFO L87 Difference]: Start difference. First operand 466 states and 574 transitions. Second operand has 4 states, 4 states have (on average 29.75) internal successors, (119), 4 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 05:22:08,387 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:22:08,387 INFO L93 Difference]: Finished difference Result 418 states and 493 transitions. [2023-11-19 05:22:08,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 05:22:08,390 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 29.75) internal successors, (119), 4 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 135 [2023-11-19 05:22:08,390 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:22:08,392 INFO L225 Difference]: With dead ends: 418 [2023-11-19 05:22:08,392 INFO L226 Difference]: Without dead ends: 418 [2023-11-19 05:22:08,392 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 403 GetRequests, 388 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=69, Invalid=203, Unknown=0, NotChecked=0, Total=272 [2023-11-19 05:22:08,393 INFO L413 NwaCegarLoop]: 204 mSDtfsCounter, 39 mSDsluCounter, 388 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 592 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 05:22:08,393 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [39 Valid, 592 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 05:22:08,394 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 418 states. [2023-11-19 05:22:08,403 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 418 to 415. [2023-11-19 05:22:08,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 415 states, 405 states have (on average 1.1876543209876542) internal successors, (481), 408 states have internal predecessors, (481), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2023-11-19 05:22:08,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 415 states to 415 states and 490 transitions. [2023-11-19 05:22:08,406 INFO L78 Accepts]: Start accepts. Automaton has 415 states and 490 transitions. Word has length 135 [2023-11-19 05:22:08,407 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:22:08,407 INFO L495 AbstractCegarLoop]: Abstraction has 415 states and 490 transitions. [2023-11-19 05:22:08,407 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 29.75) internal successors, (119), 4 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 05:22:08,408 INFO L276 IsEmpty]: Start isEmpty. Operand 415 states and 490 transitions. [2023-11-19 05:22:08,409 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2023-11-19 05:22:08,409 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:22:08,410 INFO L195 NwaCegarLoop]: trace histogram [8, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 05:22:08,427 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d685691-8bfd-432b-b384-543dd14acf5d/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 (15)] Forceful destruction successful, exit code 0 [2023-11-19 05:22:08,625 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d685691-8bfd-432b-b384-543dd14acf5d/bin/utaipan-verify-t7M7D8N6sZ/cvc4 --incremental --print-success --lang smt (16)] Forceful destruction successful, exit code 0 [2023-11-19 05:22:08,820 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d685691-8bfd-432b-b384-543dd14acf5d/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=3,16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d685691-8bfd-432b-b384-543dd14acf5d/bin/utaipan-verify-t7M7D8N6sZ/cvc4 --incremental --print-success --lang smt [2023-11-19 05:22:08,820 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2023-11-19 05:22:08,821 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:22:08,821 INFO L85 PathProgramCache]: Analyzing trace with hash -2141889286, now seen corresponding path program 1 times [2023-11-19 05:22:08,822 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-19 05:22:08,822 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1741083070] [2023-11-19 05:22:08,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:22:08,822 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-19 05:22:08,822 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d685691-8bfd-432b-b384-543dd14acf5d/bin/utaipan-verify-t7M7D8N6sZ/mathsat [2023-11-19 05:22:08,823 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d685691-8bfd-432b-b384-543dd14acf5d/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 05:22:08,824 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d685691-8bfd-432b-b384-543dd14acf5d/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 (17)] Waiting until timeout for monitored process [2023-11-19 05:22:09,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:22:09,630 INFO L262 TraceCheckSpWp]: Trace formula consists of 633 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-19 05:22:09,634 INFO L285 TraceCheckSpWp]: Computing forward predicates...