./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memcleanup.prp --file ../../sv-benchmarks/c/uthash-2.0.2/uthash_OAT_nondet_test1-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (memcleanup) Using default analysis Version 9bd2c7ff Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0efc948-45fb-44fb-8cdf-b1624aa11e98/bin/utaipan-verify-t7M7D8N6sZ/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0efc948-45fb-44fb-8cdf-b1624aa11e98/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_c0efc948-45fb-44fb-8cdf-b1624aa11e98/bin/utaipan-verify-t7M7D8N6sZ/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0efc948-45fb-44fb-8cdf-b1624aa11e98/bin/utaipan-verify-t7M7D8N6sZ/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_OAT_nondet_test1-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0efc948-45fb-44fb-8cdf-b1624aa11e98/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_c0efc948-45fb-44fb-8cdf-b1624aa11e98/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 26a58d7d603dc7e351440fbc8be1a2e69d6c8a245d05ca1fdcdd97a1f744081c --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 04:54:17,013 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 04:54:17,128 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0efc948-45fb-44fb-8cdf-b1624aa11e98/bin/utaipan-verify-t7M7D8N6sZ/config/svcomp-MemCleanup-32bit-Taipan_Default.epf [2023-11-19 04:54:17,136 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 04:54:17,137 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 04:54:17,186 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 04:54:17,187 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 04:54:17,187 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 04:54:17,188 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 04:54:17,193 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 04:54:17,193 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-19 04:54:17,195 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-19 04:54:17,195 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-19 04:54:17,197 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-19 04:54:17,197 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-19 04:54:17,197 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-19 04:54:17,198 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-19 04:54:17,199 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-19 04:54:17,200 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-19 04:54:17,200 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-19 04:54:17,201 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-19 04:54:17,201 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-19 04:54:17,202 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-19 04:54:17,202 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-19 04:54:17,203 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 04:54:17,204 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-19 04:54:17,204 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-19 04:54:17,204 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 04:54:17,205 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-19 04:54:17,205 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 04:54:17,206 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-19 04:54:17,218 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-19 04:54:17,219 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-19 04:54:17,219 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 04:54:17,219 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-19 04:54:17,219 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-19 04:54:17,220 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-19 04:54:17,220 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-19 04:54:17,220 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-19 04:54:17,220 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 04:54:17,221 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 04:54:17,221 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 04:54:17,221 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 04:54:17,221 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 04:54:17,222 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 04:54:17,222 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-19 04:54:17,222 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 04:54:17,223 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-19 04:54:17,223 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 04:54:17,223 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_c0efc948-45fb-44fb-8cdf-b1624aa11e98/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0efc948-45fb-44fb-8cdf-b1624aa11e98/bin/utaipan-verify-t7M7D8N6sZ Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-memcleanup) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 26a58d7d603dc7e351440fbc8be1a2e69d6c8a245d05ca1fdcdd97a1f744081c [2023-11-19 04:54:17,557 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 04:54:17,590 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 04:54:17,593 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 04:54:17,594 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 04:54:17,595 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 04:54:17,596 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0efc948-45fb-44fb-8cdf-b1624aa11e98/bin/utaipan-verify-t7M7D8N6sZ/../../sv-benchmarks/c/uthash-2.0.2/uthash_OAT_nondet_test1-2.i [2023-11-19 04:54:20,626 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 04:54:21,049 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 04:54:21,054 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0efc948-45fb-44fb-8cdf-b1624aa11e98/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_nondet_test1-2.i [2023-11-19 04:54:21,081 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0efc948-45fb-44fb-8cdf-b1624aa11e98/bin/utaipan-verify-t7M7D8N6sZ/data/e0c925024/48fa255c38fe437cadc51169ebe7abc3/FLAG61babcb87 [2023-11-19 04:54:21,095 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0efc948-45fb-44fb-8cdf-b1624aa11e98/bin/utaipan-verify-t7M7D8N6sZ/data/e0c925024/48fa255c38fe437cadc51169ebe7abc3 [2023-11-19 04:54:21,098 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 04:54:21,100 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 04:54:21,101 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 04:54:21,101 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 04:54:21,107 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 04:54:21,107 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 04:54:21" (1/1) ... [2023-11-19 04:54:21,108 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7e27f997 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:54:21, skipping insertion in model container [2023-11-19 04:54:21,109 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 04:54:21" (1/1) ... [2023-11-19 04:54:21,194 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 04:54:21,423 WARN L635 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2023-11-19 04:54:21,767 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 04:54:21,789 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 04:54:21,790 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@24dfc128 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:54:21, skipping insertion in model container [2023-11-19 04:54:21,790 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 04:54:21,790 INFO L186 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2023-11-19 04:54:21,792 INFO L158 Benchmark]: Toolchain (without parser) took 691.76ms. Allocated memory is still 169.9MB. Free memory was 137.8MB in the beginning and 120.4MB in the end (delta: 17.4MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2023-11-19 04:54:21,793 INFO L158 Benchmark]: CDTParser took 0.18ms. Allocated memory is still 130.0MB. Free memory was 101.6MB in the beginning and 101.6MB in the end (delta: 70.0kB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-19 04:54:21,794 INFO L158 Benchmark]: CACSL2BoogieTranslator took 689.35ms. Allocated memory is still 169.9MB. Free memory was 137.8MB in the beginning and 120.4MB in the end (delta: 17.4MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2023-11-19 04:54:21,796 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18ms. Allocated memory is still 130.0MB. Free memory was 101.6MB in the beginning and 101.6MB in the end (delta: 70.0kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 689.35ms. Allocated memory is still 169.9MB. Free memory was 137.8MB in the beginning and 120.4MB in the end (delta: 17.4MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 738]: Unsupported Syntax Found a cast between two array/pointer types of different sizes while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0efc948-45fb-44fb-8cdf-b1624aa11e98/bin/utaipan-verify-t7M7D8N6sZ/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0efc948-45fb-44fb-8cdf-b1624aa11e98/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_c0efc948-45fb-44fb-8cdf-b1624aa11e98/bin/utaipan-verify-t7M7D8N6sZ/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0efc948-45fb-44fb-8cdf-b1624aa11e98/bin/utaipan-verify-t7M7D8N6sZ/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_OAT_nondet_test1-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0efc948-45fb-44fb-8cdf-b1624aa11e98/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_c0efc948-45fb-44fb-8cdf-b1624aa11e98/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 26a58d7d603dc7e351440fbc8be1a2e69d6c8a245d05ca1fdcdd97a1f744081c --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 04:54:24,285 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 04:54:24,422 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0efc948-45fb-44fb-8cdf-b1624aa11e98/bin/utaipan-verify-t7M7D8N6sZ/config/svcomp-MemCleanup-32bit-Taipan_Bitvector.epf [2023-11-19 04:54:24,430 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 04:54:24,431 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 04:54:24,474 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 04:54:24,475 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 04:54:24,475 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 04:54:24,476 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 04:54:24,481 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 04:54:24,482 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-19 04:54:24,482 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-19 04:54:24,483 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-19 04:54:24,484 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-19 04:54:24,485 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-19 04:54:24,485 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-19 04:54:24,486 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-19 04:54:24,486 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-19 04:54:24,487 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 04:54:24,488 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-19 04:54:24,488 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-19 04:54:24,489 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 04:54:24,489 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-19 04:54:24,490 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 04:54:24,490 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-19 04:54:24,490 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-19 04:54:24,491 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-19 04:54:24,491 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 04:54:24,492 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-19 04:54:24,492 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-19 04:54:24,494 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-11-19 04:54:24,494 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-11-19 04:54:24,494 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-19 04:54:24,494 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-19 04:54:24,495 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-19 04:54:24,495 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 04:54:24,496 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 04:54:24,496 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-19 04:54:24,496 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 04:54:24,497 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 04:54:24,497 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 04:54:24,497 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 04:54:24,498 INFO L153 SettingsManager]: * Trace refinement strategy=WALRUS [2023-11-19 04:54:24,498 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-11-19 04:54:24,498 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-19 04:54:24,498 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 04:54:24,499 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_c0efc948-45fb-44fb-8cdf-b1624aa11e98/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0efc948-45fb-44fb-8cdf-b1624aa11e98/bin/utaipan-verify-t7M7D8N6sZ Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-memcleanup) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 26a58d7d603dc7e351440fbc8be1a2e69d6c8a245d05ca1fdcdd97a1f744081c [2023-11-19 04:54:24,896 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 04:54:24,929 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 04:54:24,932 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 04:54:24,933 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 04:54:24,934 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 04:54:24,936 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0efc948-45fb-44fb-8cdf-b1624aa11e98/bin/utaipan-verify-t7M7D8N6sZ/../../sv-benchmarks/c/uthash-2.0.2/uthash_OAT_nondet_test1-2.i [2023-11-19 04:54:27,916 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 04:54:28,409 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 04:54:28,410 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0efc948-45fb-44fb-8cdf-b1624aa11e98/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_nondet_test1-2.i [2023-11-19 04:54:28,440 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0efc948-45fb-44fb-8cdf-b1624aa11e98/bin/utaipan-verify-t7M7D8N6sZ/data/c50300f1f/b607985d355f42adb0bf653a3a89f557/FLAGf63f1cb77 [2023-11-19 04:54:28,461 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0efc948-45fb-44fb-8cdf-b1624aa11e98/bin/utaipan-verify-t7M7D8N6sZ/data/c50300f1f/b607985d355f42adb0bf653a3a89f557 [2023-11-19 04:54:28,468 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 04:54:28,469 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 04:54:28,470 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 04:54:28,471 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 04:54:28,476 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 04:54:28,477 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 04:54:28" (1/1) ... [2023-11-19 04:54:28,478 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@62e5c2f5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:54:28, skipping insertion in model container [2023-11-19 04:54:28,478 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 04:54:28" (1/1) ... [2023-11-19 04:54:28,554 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 04:54:28,881 WARN L635 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2023-11-19 04:54:29,122 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 04:54:29,143 INFO L199 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2023-11-19 04:54:29,193 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 04:54:29,201 WARN L635 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2023-11-19 04:54:29,324 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 04:54:29,328 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 04:54:29,346 WARN L635 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2023-11-19 04:54:29,397 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 04:54:29,443 WARN L675 CHandler]: The function __builtin_bswap16 is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 04:54:29,451 INFO L206 MainTranslator]: Completed translation [2023-11-19 04:54:29,451 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:54:29 WrapperNode [2023-11-19 04:54:29,451 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 04:54:29,452 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 04:54:29,453 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 04:54:29,453 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 04:54:29,460 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:54:29" (1/1) ... [2023-11-19 04:54:29,497 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:54:29" (1/1) ... [2023-11-19 04:54:29,552 INFO L138 Inliner]: procedures = 181, calls = 229, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 743 [2023-11-19 04:54:29,553 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 04:54:29,554 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 04:54:29,554 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 04:54:29,554 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 04:54:29,564 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:54:29" (1/1) ... [2023-11-19 04:54:29,564 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:54:29" (1/1) ... [2023-11-19 04:54:29,575 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:54:29" (1/1) ... [2023-11-19 04:54:29,575 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:54:29" (1/1) ... [2023-11-19 04:54:29,664 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:54:29" (1/1) ... [2023-11-19 04:54:29,688 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:54:29" (1/1) ... [2023-11-19 04:54:29,692 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:54:29" (1/1) ... [2023-11-19 04:54:29,711 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:54:29" (1/1) ... [2023-11-19 04:54:29,720 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 04:54:29,721 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 04:54:29,721 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 04:54:29,721 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 04:54:29,722 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:54:29" (1/1) ... [2023-11-19 04:54:29,751 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 04:54:29,766 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0efc948-45fb-44fb-8cdf-b1624aa11e98/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 04:54:29,777 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0efc948-45fb-44fb-8cdf-b1624aa11e98/bin/utaipan-verify-t7M7D8N6sZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 04:54:29,813 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0efc948-45fb-44fb-8cdf-b1624aa11e98/bin/utaipan-verify-t7M7D8N6sZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 04:54:29,829 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2023-11-19 04:54:29,830 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2023-11-19 04:54:29,830 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2023-11-19 04:54:29,831 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2023-11-19 04:54:29,831 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-19 04:54:29,831 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 04:54:29,831 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-19 04:54:29,831 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-19 04:54:29,831 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-19 04:54:29,832 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-19 04:54:29,832 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2023-11-19 04:54:29,832 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2023-11-19 04:54:29,833 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 04:54:29,833 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 04:54:30,053 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 04:54:30,056 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 04:54:36,899 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 04:54:36,912 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 04:54:36,913 INFO L302 CfgBuilder]: Removed 40 assume(true) statements. [2023-11-19 04:54:36,920 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 04:54:36 BoogieIcfgContainer [2023-11-19 04:54:36,921 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 04:54:36,924 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 04:54:36,924 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 04:54:36,928 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 04:54:36,928 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 04:54:28" (1/3) ... [2023-11-19 04:54:36,929 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3060b81b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 04:54:36, skipping insertion in model container [2023-11-19 04:54:36,929 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:54:29" (2/3) ... [2023-11-19 04:54:36,931 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3060b81b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 04:54:36, skipping insertion in model container [2023-11-19 04:54:36,931 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 04:54:36" (3/3) ... [2023-11-19 04:54:36,933 INFO L112 eAbstractionObserver]: Analyzing ICFG uthash_OAT_nondet_test1-2.i [2023-11-19 04:54:36,951 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 04:54:36,952 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-11-19 04:54:37,007 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 04:54:37,014 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;@5cb5edb7, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-19 04:54:37,014 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-11-19 04:54:37,021 INFO L276 IsEmpty]: Start isEmpty. Operand has 140 states, 133 states have (on average 1.6390977443609023) internal successors, (218), 135 states have internal predecessors, (218), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-19 04:54:37,034 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2023-11-19 04:54:37,034 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:54:37,036 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 04:54:37,036 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK] === [2023-11-19 04:54:37,043 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:54:37,043 INFO L85 PathProgramCache]: Analyzing trace with hash -1785902601, now seen corresponding path program 1 times [2023-11-19 04:54:37,059 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-19 04:54:37,064 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [716551036] [2023-11-19 04:54:37,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:54:37,065 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 04:54:37,065 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0efc948-45fb-44fb-8cdf-b1624aa11e98/bin/utaipan-verify-t7M7D8N6sZ/mathsat [2023-11-19 04:54:37,071 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0efc948-45fb-44fb-8cdf-b1624aa11e98/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 04:54:37,074 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0efc948-45fb-44fb-8cdf-b1624aa11e98/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 04:54:37,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:54:37,232 INFO L262 TraceCheckSpWp]: Trace formula consists of 26 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-19 04:54:37,240 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 04:54:37,289 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 04:54:37,289 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 04:54:37,289 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-19 04:54:37,290 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [716551036] [2023-11-19 04:54:37,290 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [716551036] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 04:54:37,291 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 04:54:37,291 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 04:54:37,292 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1584837726] [2023-11-19 04:54:37,293 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 04:54:37,297 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 04:54:37,297 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-19 04:54:37,332 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 04:54:37,333 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 04:54:37,338 INFO L87 Difference]: Start difference. First operand has 140 states, 133 states have (on average 1.6390977443609023) internal successors, (218), 135 states have internal predecessors, (218), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 04:54:37,639 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 04:54:37,639 INFO L93 Difference]: Finished difference Result 228 states and 292 transitions. [2023-11-19 04:54:37,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 04:54:37,642 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2023-11-19 04:54:37,642 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 04:54:37,651 INFO L225 Difference]: With dead ends: 228 [2023-11-19 04:54:37,653 INFO L226 Difference]: Without dead ends: 226 [2023-11-19 04:54:37,654 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 7 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 04:54:37,659 INFO L413 NwaCegarLoop]: 201 mSDtfsCounter, 108 mSDsluCounter, 171 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 111 SdHoareTripleChecker+Valid, 372 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-19 04:54:37,660 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [111 Valid, 372 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-19 04:54:37,679 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 226 states. [2023-11-19 04:54:37,705 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 226 to 138. [2023-11-19 04:54:37,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 138 states, 132 states have (on average 1.2878787878787878) internal successors, (170), 133 states have internal predecessors, (170), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-19 04:54:37,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 176 transitions. [2023-11-19 04:54:37,711 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 176 transitions. Word has length 9 [2023-11-19 04:54:37,711 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 04:54:37,712 INFO L495 AbstractCegarLoop]: Abstraction has 138 states and 176 transitions. [2023-11-19 04:54:37,712 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 04:54:37,712 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 176 transitions. [2023-11-19 04:54:37,716 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2023-11-19 04:54:37,716 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:54:37,716 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 04:54:37,729 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0efc948-45fb-44fb-8cdf-b1624aa11e98/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 04:54:37,929 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0efc948-45fb-44fb-8cdf-b1624aa11e98/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 04:54:37,929 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK] === [2023-11-19 04:54:37,930 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:54:37,930 INFO L85 PathProgramCache]: Analyzing trace with hash -336558078, now seen corresponding path program 1 times [2023-11-19 04:54:37,933 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-19 04:54:37,933 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1257733265] [2023-11-19 04:54:37,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:54:37,934 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 04:54:37,934 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0efc948-45fb-44fb-8cdf-b1624aa11e98/bin/utaipan-verify-t7M7D8N6sZ/mathsat [2023-11-19 04:54:37,935 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0efc948-45fb-44fb-8cdf-b1624aa11e98/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 04:54:37,966 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0efc948-45fb-44fb-8cdf-b1624aa11e98/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 04:54:38,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:54:38,397 INFO L262 TraceCheckSpWp]: Trace formula consists of 292 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-19 04:54:38,402 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 04:54:38,454 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 04:54:38,454 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 04:54:38,455 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-19 04:54:38,455 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1257733265] [2023-11-19 04:54:38,455 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1257733265] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 04:54:38,455 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 04:54:38,456 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 04:54:38,456 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1367179953] [2023-11-19 04:54:38,456 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 04:54:38,457 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 04:54:38,458 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-19 04:54:38,458 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 04:54:38,458 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-19 04:54:38,459 INFO L87 Difference]: Start difference. First operand 138 states and 176 transitions. Second operand has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 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 04:54:38,617 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 04:54:38,617 INFO L93 Difference]: Finished difference Result 142 states and 172 transitions. [2023-11-19 04:54:38,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 04:54:38,618 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 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 64 [2023-11-19 04:54:38,619 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 04:54:38,620 INFO L225 Difference]: With dead ends: 142 [2023-11-19 04:54:38,620 INFO L226 Difference]: Without dead ends: 142 [2023-11-19 04:54:38,621 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 61 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 04:54:38,622 INFO L413 NwaCegarLoop]: 146 mSDtfsCounter, 36 mSDsluCounter, 266 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 412 SdHoareTripleChecker+Invalid, 62 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 04:54:38,623 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 412 Invalid, 62 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 04:54:38,624 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142 states. [2023-11-19 04:54:38,632 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142 to 141. [2023-11-19 04:54:38,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 141 states, 135 states have (on average 1.2222222222222223) internal successors, (165), 136 states have internal predecessors, (165), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-19 04:54:38,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 171 transitions. [2023-11-19 04:54:38,635 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 171 transitions. Word has length 64 [2023-11-19 04:54:38,635 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 04:54:38,636 INFO L495 AbstractCegarLoop]: Abstraction has 141 states and 171 transitions. [2023-11-19 04:54:38,636 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 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 04:54:38,636 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 171 transitions. [2023-11-19 04:54:38,639 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2023-11-19 04:54:38,639 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:54:38,639 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 04:54:38,658 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0efc948-45fb-44fb-8cdf-b1624aa11e98/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 04:54:38,845 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0efc948-45fb-44fb-8cdf-b1624aa11e98/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 04:54:38,846 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK] === [2023-11-19 04:54:38,847 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:54:38,847 INFO L85 PathProgramCache]: Analyzing trace with hash -150972938, now seen corresponding path program 1 times [2023-11-19 04:54:38,848 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-19 04:54:38,848 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1501633750] [2023-11-19 04:54:38,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:54:38,849 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 04:54:38,849 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0efc948-45fb-44fb-8cdf-b1624aa11e98/bin/utaipan-verify-t7M7D8N6sZ/mathsat [2023-11-19 04:54:38,850 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0efc948-45fb-44fb-8cdf-b1624aa11e98/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 04:54:38,867 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0efc948-45fb-44fb-8cdf-b1624aa11e98/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 04:54:39,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:54:39,289 INFO L262 TraceCheckSpWp]: Trace formula consists of 286 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-19 04:54:39,293 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 04:54:39,691 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 04:54:39,692 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 04:54:39,692 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-19 04:54:39,692 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1501633750] [2023-11-19 04:54:39,693 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1501633750] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 04:54:39,693 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 04:54:39,693 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 04:54:39,693 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1975895960] [2023-11-19 04:54:39,693 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 04:54:39,694 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 04:54:39,694 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-19 04:54:39,695 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 04:54:39,695 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 04:54:39,696 INFO L87 Difference]: Start difference. First operand 141 states and 171 transitions. Second operand has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 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 04:54:40,353 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 04:54:40,354 INFO L93 Difference]: Finished difference Result 214 states and 257 transitions. [2023-11-19 04:54:40,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 04:54:40,359 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 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 64 [2023-11-19 04:54:40,359 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 04:54:40,361 INFO L225 Difference]: With dead ends: 214 [2023-11-19 04:54:40,361 INFO L226 Difference]: Without dead ends: 214 [2023-11-19 04:54:40,361 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 62 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 04:54:40,363 INFO L413 NwaCegarLoop]: 155 mSDtfsCounter, 49 mSDsluCounter, 135 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 290 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-19 04:54:40,363 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [51 Valid, 290 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-19 04:54:40,365 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 214 states. [2023-11-19 04:54:40,376 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 214 to 183. [2023-11-19 04:54:40,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 183 states, 177 states have (on average 1.192090395480226) internal successors, (211), 178 states have internal predecessors, (211), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-19 04:54:40,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 183 states to 183 states and 217 transitions. [2023-11-19 04:54:40,379 INFO L78 Accepts]: Start accepts. Automaton has 183 states and 217 transitions. Word has length 64 [2023-11-19 04:54:40,379 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 04:54:40,380 INFO L495 AbstractCegarLoop]: Abstraction has 183 states and 217 transitions. [2023-11-19 04:54:40,380 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 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 04:54:40,380 INFO L276 IsEmpty]: Start isEmpty. Operand 183 states and 217 transitions. [2023-11-19 04:54:40,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2023-11-19 04:54:40,382 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:54:40,383 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 04:54:40,400 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0efc948-45fb-44fb-8cdf-b1624aa11e98/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 04:54:40,593 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0efc948-45fb-44fb-8cdf-b1624aa11e98/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 04:54:40,593 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK] === [2023-11-19 04:54:40,594 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:54:40,594 INFO L85 PathProgramCache]: Analyzing trace with hash -244616813, now seen corresponding path program 1 times [2023-11-19 04:54:40,595 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-19 04:54:40,595 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1718936311] [2023-11-19 04:54:40,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:54:40,595 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 04:54:40,596 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0efc948-45fb-44fb-8cdf-b1624aa11e98/bin/utaipan-verify-t7M7D8N6sZ/mathsat [2023-11-19 04:54:40,597 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0efc948-45fb-44fb-8cdf-b1624aa11e98/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 04:54:40,599 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0efc948-45fb-44fb-8cdf-b1624aa11e98/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 04:54:41,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:54:41,091 INFO L262 TraceCheckSpWp]: Trace formula consists of 417 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-19 04:54:41,096 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 04:54:41,136 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 04:54:41,136 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 04:54:41,136 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-19 04:54:41,137 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1718936311] [2023-11-19 04:54:41,137 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1718936311] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 04:54:41,137 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 04:54:41,137 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 04:54:41,138 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [668302712] [2023-11-19 04:54:41,138 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 04:54:41,138 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 04:54:41,139 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-19 04:54:41,140 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 04:54:41,140 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-19 04:54:41,140 INFO L87 Difference]: Start difference. First operand 183 states and 217 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, (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 04:54:41,196 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 04:54:41,196 INFO L93 Difference]: Finished difference Result 186 states and 221 transitions. [2023-11-19 04:54:41,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 04:54:41,198 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, (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 79 [2023-11-19 04:54:41,198 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 04:54:41,201 INFO L225 Difference]: With dead ends: 186 [2023-11-19 04:54:41,201 INFO L226 Difference]: Without dead ends: 186 [2023-11-19 04:54:41,201 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 76 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 04:54:41,202 INFO L413 NwaCegarLoop]: 161 mSDtfsCounter, 2 mSDsluCounter, 318 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 479 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 04:54:41,203 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 479 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 04:54:41,204 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 186 states. [2023-11-19 04:54:41,213 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 186 to 186. [2023-11-19 04:54:41,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 186 states, 179 states have (on average 1.1955307262569832) internal successors, (214), 181 states have internal predecessors, (214), 3 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2023-11-19 04:54:41,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 186 states to 186 states and 221 transitions. [2023-11-19 04:54:41,216 INFO L78 Accepts]: Start accepts. Automaton has 186 states and 221 transitions. Word has length 79 [2023-11-19 04:54:41,217 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 04:54:41,217 INFO L495 AbstractCegarLoop]: Abstraction has 186 states and 221 transitions. [2023-11-19 04:54:41,217 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, (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 04:54:41,217 INFO L276 IsEmpty]: Start isEmpty. Operand 186 states and 221 transitions. [2023-11-19 04:54:41,220 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2023-11-19 04:54:41,220 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:54:41,220 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] [2023-11-19 04:54:41,241 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0efc948-45fb-44fb-8cdf-b1624aa11e98/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 04:54:41,427 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0efc948-45fb-44fb-8cdf-b1624aa11e98/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 04:54:41,428 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK] === [2023-11-19 04:54:41,428 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:54:41,428 INFO L85 PathProgramCache]: Analyzing trace with hash 1908584817, now seen corresponding path program 1 times [2023-11-19 04:54:41,429 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-19 04:54:41,429 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1684173309] [2023-11-19 04:54:41,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:54:41,430 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 04:54:41,430 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0efc948-45fb-44fb-8cdf-b1624aa11e98/bin/utaipan-verify-t7M7D8N6sZ/mathsat [2023-11-19 04:54:41,434 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0efc948-45fb-44fb-8cdf-b1624aa11e98/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 04:54:41,439 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0efc948-45fb-44fb-8cdf-b1624aa11e98/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 04:54:41,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:54:41,989 INFO L262 TraceCheckSpWp]: Trace formula consists of 439 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-19 04:54:41,993 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 04:54:42,040 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-19 04:54:42,040 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 04:54:42,163 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 1 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-19 04:54:42,163 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-19 04:54:42,164 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1684173309] [2023-11-19 04:54:42,164 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1684173309] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 04:54:42,164 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [848842195] [2023-11-19 04:54:42,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:54:42,164 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-11-19 04:54:42,165 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0efc948-45fb-44fb-8cdf-b1624aa11e98/bin/utaipan-verify-t7M7D8N6sZ/cvc4 [2023-11-19 04:54:42,173 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0efc948-45fb-44fb-8cdf-b1624aa11e98/bin/utaipan-verify-t7M7D8N6sZ/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-11-19 04:54:42,206 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0efc948-45fb-44fb-8cdf-b1624aa11e98/bin/utaipan-verify-t7M7D8N6sZ/cvc4 --incremental --print-success --lang smt (7)] Waiting until timeout for monitored process [2023-11-19 04:54:42,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:54:42,808 INFO L262 TraceCheckSpWp]: Trace formula consists of 439 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-19 04:54:42,811 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 04:54:43,079 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-11-19 04:54:43,079 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 04:54:43,079 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [848842195] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 04:54:43,079 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-11-19 04:54:43,079 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5, 5] total 10 [2023-11-19 04:54:43,080 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1468765677] [2023-11-19 04:54:43,080 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 04:54:43,080 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 04:54:43,080 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-19 04:54:43,081 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 04:54:43,081 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2023-11-19 04:54:43,081 INFO L87 Difference]: Start difference. First operand 186 states and 221 transitions. Second operand has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-19 04:54:45,414 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-19 04:54:47,420 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-19 04:54:49,793 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.10s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-19 04:54:50,144 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 04:54:50,144 INFO L93 Difference]: Finished difference Result 261 states and 315 transitions. [2023-11-19 04:54:50,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-19 04:54:50,147 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 81 [2023-11-19 04:54:50,147 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 04:54:50,149 INFO L225 Difference]: With dead ends: 261 [2023-11-19 04:54:50,149 INFO L226 Difference]: Without dead ends: 261 [2023-11-19 04:54:50,149 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 241 GetRequests, 232 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2023-11-19 04:54:50,150 INFO L413 NwaCegarLoop]: 162 mSDtfsCounter, 265 mSDsluCounter, 152 mSDsCounter, 0 mSdLazyCounter, 91 mSolverCounterSat, 6 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 265 SdHoareTripleChecker+Valid, 314 SdHoareTripleChecker+Invalid, 99 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 91 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.0s IncrementalHoareTripleChecker+Time [2023-11-19 04:54:50,151 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [265 Valid, 314 Invalid, 99 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 91 Invalid, 2 Unknown, 0 Unchecked, 7.0s Time] [2023-11-19 04:54:50,152 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 261 states. [2023-11-19 04:54:50,161 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 261 to 188. [2023-11-19 04:54:50,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 188 states, 181 states have (on average 1.1823204419889504) internal successors, (214), 183 states have internal predecessors, (214), 3 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2023-11-19 04:54:50,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 188 states to 188 states and 221 transitions. [2023-11-19 04:54:50,164 INFO L78 Accepts]: Start accepts. Automaton has 188 states and 221 transitions. Word has length 81 [2023-11-19 04:54:50,164 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 04:54:50,164 INFO L495 AbstractCegarLoop]: Abstraction has 188 states and 221 transitions. [2023-11-19 04:54:50,165 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-19 04:54:50,165 INFO L276 IsEmpty]: Start isEmpty. Operand 188 states and 221 transitions. [2023-11-19 04:54:50,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2023-11-19 04:54:50,168 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:54:50,168 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, 1] [2023-11-19 04:54:50,175 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0efc948-45fb-44fb-8cdf-b1624aa11e98/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 04:54:50,378 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0efc948-45fb-44fb-8cdf-b1624aa11e98/bin/utaipan-verify-t7M7D8N6sZ/cvc4 --incremental --print-success --lang smt (7)] Forceful destruction successful, exit code 0 [2023-11-19 04:54:50,575 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0efc948-45fb-44fb-8cdf-b1624aa11e98/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 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0efc948-45fb-44fb-8cdf-b1624aa11e98/bin/utaipan-verify-t7M7D8N6sZ/cvc4 --incremental --print-success --lang smt [2023-11-19 04:54:50,575 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK] === [2023-11-19 04:54:50,576 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:54:50,576 INFO L85 PathProgramCache]: Analyzing trace with hash 1849074607, now seen corresponding path program 1 times [2023-11-19 04:54:50,576 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-19 04:54:50,576 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [205175241] [2023-11-19 04:54:50,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:54:50,577 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 04:54:50,577 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0efc948-45fb-44fb-8cdf-b1624aa11e98/bin/utaipan-verify-t7M7D8N6sZ/mathsat [2023-11-19 04:54:50,578 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0efc948-45fb-44fb-8cdf-b1624aa11e98/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 04:54:50,579 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0efc948-45fb-44fb-8cdf-b1624aa11e98/bin/utaipan-verify-t7M7D8N6sZ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2023-11-19 04:54:51,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:54:51,100 INFO L262 TraceCheckSpWp]: Trace formula consists of 443 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-19 04:54:51,103 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 04:54:51,154 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 04:54:51,154 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 04:54:51,274 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 1 proven. 7 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-19 04:54:51,274 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-19 04:54:51,274 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [205175241] [2023-11-19 04:54:51,274 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [205175241] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 04:54:51,274 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1974077596] [2023-11-19 04:54:51,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:54:51,275 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-11-19 04:54:51,275 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0efc948-45fb-44fb-8cdf-b1624aa11e98/bin/utaipan-verify-t7M7D8N6sZ/cvc4 [2023-11-19 04:54:51,280 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0efc948-45fb-44fb-8cdf-b1624aa11e98/bin/utaipan-verify-t7M7D8N6sZ/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-11-19 04:54:51,303 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0efc948-45fb-44fb-8cdf-b1624aa11e98/bin/utaipan-verify-t7M7D8N6sZ/cvc4 --incremental --print-success --lang smt (9)] Waiting until timeout for monitored process [2023-11-19 04:54:52,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:54:52,080 INFO L262 TraceCheckSpWp]: Trace formula consists of 443 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-19 04:54:52,082 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 04:54:52,109 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 04:54:52,110 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 04:54:52,166 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 1 proven. 7 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-19 04:54:52,167 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1974077596] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 04:54:52,167 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1462894533] [2023-11-19 04:54:52,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:54:52,167 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 04:54:52,168 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0efc948-45fb-44fb-8cdf-b1624aa11e98/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 04:54:52,169 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0efc948-45fb-44fb-8cdf-b1624aa11e98/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 04:54:52,180 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0efc948-45fb-44fb-8cdf-b1624aa11e98/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-11-19 04:54:52,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:54:52,653 INFO L262 TraceCheckSpWp]: Trace formula consists of 443 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-19 04:54:52,656 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 04:54:52,918 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-11-19 04:54:52,918 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 04:54:53,232 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-11-19 04:54:53,232 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1462894533] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 04:54:53,232 INFO L185 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2023-11-19 04:54:53,233 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5, 5, 4, 4] total 12 [2023-11-19 04:54:53,233 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1144313452] [2023-11-19 04:54:53,233 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2023-11-19 04:54:53,234 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-19 04:54:53,235 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-19 04:54:53,236 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-19 04:54:53,236 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2023-11-19 04:54:53,236 INFO L87 Difference]: Start difference. First operand 188 states and 221 transitions. Second operand has 12 states, 12 states have (on average 17.583333333333332) internal successors, (211), 12 states have internal predecessors, (211), 4 states have call successors, (7), 2 states have call predecessors, (7), 4 states have return successors, (8), 3 states have call predecessors, (8), 4 states have call successors, (8) [2023-11-19 04:54:54,677 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 04:54:54,677 INFO L93 Difference]: Finished difference Result 404 states and 489 transitions. [2023-11-19 04:54:54,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-19 04:54:54,678 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 17.583333333333332) internal successors, (211), 12 states have internal predecessors, (211), 4 states have call successors, (7), 2 states have call predecessors, (7), 4 states have return successors, (8), 3 states have call predecessors, (8), 4 states have call successors, (8) Word has length 83 [2023-11-19 04:54:54,678 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 04:54:54,681 INFO L225 Difference]: With dead ends: 404 [2023-11-19 04:54:54,681 INFO L226 Difference]: Without dead ends: 404 [2023-11-19 04:54:54,681 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 499 GetRequests, 483 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=80, Invalid=226, Unknown=0, NotChecked=0, Total=306 [2023-11-19 04:54:54,682 INFO L413 NwaCegarLoop]: 243 mSDtfsCounter, 456 mSDsluCounter, 1582 mSDsCounter, 0 mSdLazyCounter, 144 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 465 SdHoareTripleChecker+Valid, 1825 SdHoareTripleChecker+Invalid, 169 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 144 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-11-19 04:54:54,683 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [465 Valid, 1825 Invalid, 169 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 144 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-11-19 04:54:54,684 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 404 states. [2023-11-19 04:54:54,697 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 404 to 402. [2023-11-19 04:54:54,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 402 states, 391 states have (on average 1.19693094629156) internal successors, (468), 393 states have internal predecessors, (468), 6 states have call successors, (6), 2 states have call predecessors, (6), 3 states have return successors, (10), 6 states have call predecessors, (10), 6 states have call successors, (10) [2023-11-19 04:54:54,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 402 states to 402 states and 484 transitions. [2023-11-19 04:54:54,702 INFO L78 Accepts]: Start accepts. Automaton has 402 states and 484 transitions. Word has length 83 [2023-11-19 04:54:54,702 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 04:54:54,702 INFO L495 AbstractCegarLoop]: Abstraction has 402 states and 484 transitions. [2023-11-19 04:54:54,702 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 17.583333333333332) internal successors, (211), 12 states have internal predecessors, (211), 4 states have call successors, (7), 2 states have call predecessors, (7), 4 states have return successors, (8), 3 states have call predecessors, (8), 4 states have call successors, (8) [2023-11-19 04:54:54,703 INFO L276 IsEmpty]: Start isEmpty. Operand 402 states and 484 transitions. [2023-11-19 04:54:54,709 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 253 [2023-11-19 04:54:54,709 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:54:54,709 INFO L195 NwaCegarLoop]: trace histogram [6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 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] [2023-11-19 04:54:54,722 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0efc948-45fb-44fb-8cdf-b1624aa11e98/bin/utaipan-verify-t7M7D8N6sZ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2023-11-19 04:54:54,927 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0efc948-45fb-44fb-8cdf-b1624aa11e98/bin/utaipan-verify-t7M7D8N6sZ/cvc4 --incremental --print-success --lang smt (9)] Forceful destruction successful, exit code 0 [2023-11-19 04:54:55,133 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0efc948-45fb-44fb-8cdf-b1624aa11e98/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-11-19 04:54:55,317 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0efc948-45fb-44fb-8cdf-b1624aa11e98/bin/utaipan-verify-t7M7D8N6sZ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0efc948-45fb-44fb-8cdf-b1624aa11e98/bin/utaipan-verify-t7M7D8N6sZ/cvc4 --incremental --print-success --lang smt,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0efc948-45fb-44fb-8cdf-b1624aa11e98/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 04:54:55,317 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK] === [2023-11-19 04:54:55,317 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:54:55,318 INFO L85 PathProgramCache]: Analyzing trace with hash 870976056, now seen corresponding path program 1 times [2023-11-19 04:54:55,319 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-19 04:54:55,319 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [198047974] [2023-11-19 04:54:55,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:54:55,319 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 04:54:55,319 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0efc948-45fb-44fb-8cdf-b1624aa11e98/bin/utaipan-verify-t7M7D8N6sZ/mathsat [2023-11-19 04:54:55,321 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0efc948-45fb-44fb-8cdf-b1624aa11e98/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 04:54:55,322 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0efc948-45fb-44fb-8cdf-b1624aa11e98/bin/utaipan-verify-t7M7D8N6sZ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2023-11-19 04:54:56,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:54:56,607 INFO L262 TraceCheckSpWp]: Trace formula consists of 1267 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-19 04:54:56,613 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 04:54:56,723 INFO L134 CoverageAnalysis]: Checked inductivity of 360 backedges. 130 proven. 10 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2023-11-19 04:54:56,723 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 04:54:57,020 INFO L134 CoverageAnalysis]: Checked inductivity of 360 backedges. 112 proven. 27 refuted. 0 times theorem prover too weak. 221 trivial. 0 not checked. [2023-11-19 04:54:57,021 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-19 04:54:57,021 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [198047974] [2023-11-19 04:54:57,021 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [198047974] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 04:54:57,021 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1336352251] [2023-11-19 04:54:57,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:54:57,022 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-11-19 04:54:57,022 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0efc948-45fb-44fb-8cdf-b1624aa11e98/bin/utaipan-verify-t7M7D8N6sZ/cvc4 [2023-11-19 04:54:57,024 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0efc948-45fb-44fb-8cdf-b1624aa11e98/bin/utaipan-verify-t7M7D8N6sZ/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-11-19 04:54:57,051 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0efc948-45fb-44fb-8cdf-b1624aa11e98/bin/utaipan-verify-t7M7D8N6sZ/cvc4 --incremental --print-success --lang smt (12)] Waiting until timeout for monitored process [2023-11-19 04:54:58,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:54:58,906 INFO L262 TraceCheckSpWp]: Trace formula consists of 1267 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-19 04:54:58,911 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 04:54:58,961 INFO L134 CoverageAnalysis]: Checked inductivity of 360 backedges. 130 proven. 10 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2023-11-19 04:54:58,961 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 04:54:59,061 INFO L134 CoverageAnalysis]: Checked inductivity of 360 backedges. 112 proven. 27 refuted. 0 times theorem prover too weak. 221 trivial. 0 not checked. [2023-11-19 04:54:59,062 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1336352251] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 04:54:59,062 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [249708835] [2023-11-19 04:54:59,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:54:59,062 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 04:54:59,062 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0efc948-45fb-44fb-8cdf-b1624aa11e98/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 04:54:59,064 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0efc948-45fb-44fb-8cdf-b1624aa11e98/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 04:54:59,073 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0efc948-45fb-44fb-8cdf-b1624aa11e98/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-11-19 04:55:00,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:55:00,262 INFO L262 TraceCheckSpWp]: Trace formula consists of 1267 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-19 04:55:00,267 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 04:55:00,372 INFO L134 CoverageAnalysis]: Checked inductivity of 360 backedges. 129 proven. 3 refuted. 0 times theorem prover too weak. 228 trivial. 0 not checked. [2023-11-19 04:55:00,373 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 04:55:00,650 INFO L134 CoverageAnalysis]: Checked inductivity of 360 backedges. 129 proven. 3 refuted. 0 times theorem prover too weak. 228 trivial. 0 not checked. [2023-11-19 04:55:00,651 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [249708835] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 04:55:00,651 INFO L185 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2023-11-19 04:55:00,651 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8, 8, 6, 6] total 20 [2023-11-19 04:55:00,652 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1563411639] [2023-11-19 04:55:00,652 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2023-11-19 04:55:00,654 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-11-19 04:55:00,654 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-19 04:55:00,655 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-11-19 04:55:00,656 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=115, Invalid=265, Unknown=0, NotChecked=0, Total=380 [2023-11-19 04:55:00,656 INFO L87 Difference]: Start difference. First operand 402 states and 484 transitions. Second operand has 20 states, 20 states have (on average 7.1) internal successors, (142), 20 states have internal predecessors, (142), 2 states have call successors, (4), 2 states have call predecessors, (4), 6 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-11-19 04:55:02,067 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 04:55:02,067 INFO L93 Difference]: Finished difference Result 428 states and 531 transitions. [2023-11-19 04:55:02,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2023-11-19 04:55:02,069 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 7.1) internal successors, (142), 20 states have internal predecessors, (142), 2 states have call successors, (4), 2 states have call predecessors, (4), 6 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 252 [2023-11-19 04:55:02,069 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 04:55:02,072 INFO L225 Difference]: With dead ends: 428 [2023-11-19 04:55:02,072 INFO L226 Difference]: Without dead ends: 422 [2023-11-19 04:55:02,073 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1531 GetRequests, 1488 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 456 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=554, Invalid=1426, Unknown=0, NotChecked=0, Total=1980 [2023-11-19 04:55:02,074 INFO L413 NwaCegarLoop]: 163 mSDtfsCounter, 41 mSDsluCounter, 1416 mSDsCounter, 0 mSdLazyCounter, 246 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 1579 SdHoareTripleChecker+Invalid, 277 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 246 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-19 04:55:02,074 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [41 Valid, 1579 Invalid, 277 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 246 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-19 04:55:02,078 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 422 states. [2023-11-19 04:55:02,093 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 422 to 414. [2023-11-19 04:55:02,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 414 states, 403 states have (on average 1.2009925558312655) internal successors, (484), 405 states have internal predecessors, (484), 6 states have call successors, (6), 2 states have call predecessors, (6), 3 states have return successors, (10), 6 states have call predecessors, (10), 6 states have call successors, (10) [2023-11-19 04:55:02,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 414 states to 414 states and 500 transitions. [2023-11-19 04:55:02,099 INFO L78 Accepts]: Start accepts. Automaton has 414 states and 500 transitions. Word has length 252 [2023-11-19 04:55:02,100 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 04:55:02,100 INFO L495 AbstractCegarLoop]: Abstraction has 414 states and 500 transitions. [2023-11-19 04:55:02,101 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 7.1) internal successors, (142), 20 states have internal predecessors, (142), 2 states have call successors, (4), 2 states have call predecessors, (4), 6 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-11-19 04:55:02,101 INFO L276 IsEmpty]: Start isEmpty. Operand 414 states and 500 transitions. [2023-11-19 04:55:02,107 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 265 [2023-11-19 04:55:02,107 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:55:02,108 INFO L195 NwaCegarLoop]: trace histogram [18, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 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] [2023-11-19 04:55:02,132 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0efc948-45fb-44fb-8cdf-b1624aa11e98/bin/utaipan-verify-t7M7D8N6sZ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2023-11-19 04:55:02,335 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0efc948-45fb-44fb-8cdf-b1624aa11e98/bin/utaipan-verify-t7M7D8N6sZ/cvc4 --incremental --print-success --lang smt (12)] Ended with exit code 0 [2023-11-19 04:55:02,569 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0efc948-45fb-44fb-8cdf-b1624aa11e98/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-11-19 04:55:02,727 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0efc948-45fb-44fb-8cdf-b1624aa11e98/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 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0efc948-45fb-44fb-8cdf-b1624aa11e98/bin/utaipan-verify-t7M7D8N6sZ/cvc4 --incremental --print-success --lang smt,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0efc948-45fb-44fb-8cdf-b1624aa11e98/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 04:55:02,727 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK] === [2023-11-19 04:55:02,727 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:55:02,727 INFO L85 PathProgramCache]: Analyzing trace with hash -884073096, now seen corresponding path program 2 times [2023-11-19 04:55:02,728 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-19 04:55:02,729 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [984891185] [2023-11-19 04:55:02,729 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-19 04:55:02,729 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 04:55:02,729 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0efc948-45fb-44fb-8cdf-b1624aa11e98/bin/utaipan-verify-t7M7D8N6sZ/mathsat [2023-11-19 04:55:02,730 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0efc948-45fb-44fb-8cdf-b1624aa11e98/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 04:55:02,731 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0efc948-45fb-44fb-8cdf-b1624aa11e98/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)] Waiting until timeout for monitored process [2023-11-19 04:55:04,219 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-19 04:55:04,219 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-19 04:55:04,270 INFO L262 TraceCheckSpWp]: Trace formula consists of 1399 conjuncts, 13 conjunts are in the unsatisfiable core [2023-11-19 04:55:04,278 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 04:55:04,603 INFO L134 CoverageAnalysis]: Checked inductivity of 522 backedges. 214 proven. 55 refuted. 0 times theorem prover too weak. 253 trivial. 0 not checked. [2023-11-19 04:55:04,603 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 04:55:05,514 INFO L134 CoverageAnalysis]: Checked inductivity of 522 backedges. 112 proven. 156 refuted. 0 times theorem prover too weak. 254 trivial. 0 not checked. [2023-11-19 04:55:05,514 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-19 04:55:05,514 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [984891185] [2023-11-19 04:55:05,515 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [984891185] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 04:55:05,515 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1333885216] [2023-11-19 04:55:05,515 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-19 04:55:05,515 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-11-19 04:55:05,515 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0efc948-45fb-44fb-8cdf-b1624aa11e98/bin/utaipan-verify-t7M7D8N6sZ/cvc4 [2023-11-19 04:55:05,520 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0efc948-45fb-44fb-8cdf-b1624aa11e98/bin/utaipan-verify-t7M7D8N6sZ/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-11-19 04:55:05,539 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0efc948-45fb-44fb-8cdf-b1624aa11e98/bin/utaipan-verify-t7M7D8N6sZ/cvc4 --incremental --print-success --lang smt (15)] Waiting until timeout for monitored process [2023-11-19 04:55:07,652 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-19 04:55:07,652 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-19 04:55:07,706 INFO L262 TraceCheckSpWp]: Trace formula consists of 1399 conjuncts, 13 conjunts are in the unsatisfiable core [2023-11-19 04:55:07,712 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 04:55:07,775 INFO L134 CoverageAnalysis]: Checked inductivity of 522 backedges. 214 proven. 55 refuted. 0 times theorem prover too weak. 253 trivial. 0 not checked. [2023-11-19 04:55:07,775 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 04:55:08,021 INFO L134 CoverageAnalysis]: Checked inductivity of 522 backedges. 112 proven. 156 refuted. 0 times theorem prover too weak. 254 trivial. 0 not checked. [2023-11-19 04:55:08,021 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1333885216] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 04:55:08,021 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1390453905] [2023-11-19 04:55:08,021 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-19 04:55:08,021 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 04:55:08,022 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0efc948-45fb-44fb-8cdf-b1624aa11e98/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 04:55:08,024 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0efc948-45fb-44fb-8cdf-b1624aa11e98/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 04:55:08,056 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0efc948-45fb-44fb-8cdf-b1624aa11e98/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-11-19 04:55:09,308 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-19 04:55:09,309 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-19 04:55:09,347 INFO L262 TraceCheckSpWp]: Trace formula consists of 1399 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-19 04:55:09,353 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 04:55:10,310 INFO L134 CoverageAnalysis]: Checked inductivity of 522 backedges. 0 proven. 328 refuted. 0 times theorem prover too weak. 194 trivial. 0 not checked. [2023-11-19 04:55:10,310 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 04:55:11,433 INFO L134 CoverageAnalysis]: Checked inductivity of 522 backedges. 0 proven. 328 refuted. 0 times theorem prover too weak. 194 trivial. 0 not checked. [2023-11-19 04:55:11,434 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1390453905] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 04:55:11,434 INFO L185 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2023-11-19 04:55:11,435 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 14, 14, 7, 7] total 36 [2023-11-19 04:55:11,435 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1193980616] [2023-11-19 04:55:11,435 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2023-11-19 04:55:11,437 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2023-11-19 04:55:11,437 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-19 04:55:11,439 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2023-11-19 04:55:11,440 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=238, Invalid=1022, Unknown=0, NotChecked=0, Total=1260 [2023-11-19 04:55:11,440 INFO L87 Difference]: Start difference. First operand 414 states and 500 transitions. Second operand has 36 states, 36 states have (on average 16.61111111111111) internal successors, (598), 36 states have internal predecessors, (598), 4 states have call successors, (7), 2 states have call predecessors, (7), 4 states have return successors, (8), 3 states have call predecessors, (8), 4 states have call successors, (8)