./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memcleanup.prp --file ../../sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test9-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (memcleanup) Using default analysis Version 9bd2c7ff Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a848fbba-5302-44ff-8ebf-c9b54f25eb1c/bin/utaipan-verify-t7M7D8N6sZ/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a848fbba-5302-44ff-8ebf-c9b54f25eb1c/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_a848fbba-5302-44ff-8ebf-c9b54f25eb1c/bin/utaipan-verify-t7M7D8N6sZ/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a848fbba-5302-44ff-8ebf-c9b54f25eb1c/bin/utaipan-verify-t7M7D8N6sZ/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test9-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a848fbba-5302-44ff-8ebf-c9b54f25eb1c/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_a848fbba-5302-44ff-8ebf-c9b54f25eb1c/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 f4a8b24485e53fece96b44fdc12e6f161e1bbffda2cd597a930f4925e148dc01 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 05:07:40,068 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 05:07:40,188 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a848fbba-5302-44ff-8ebf-c9b54f25eb1c/bin/utaipan-verify-t7M7D8N6sZ/config/svcomp-MemCleanup-32bit-Taipan_Default.epf [2023-11-19 05:07:40,197 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 05:07:40,198 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 05:07:40,239 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 05:07:40,240 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 05:07:40,241 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 05:07:40,242 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 05:07:40,246 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 05:07:40,247 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-19 05:07:40,247 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-19 05:07:40,248 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-19 05:07:40,249 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-19 05:07:40,250 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-19 05:07:40,250 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-19 05:07:40,250 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-19 05:07:40,251 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-19 05:07:40,251 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-19 05:07:40,251 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-19 05:07:40,252 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-19 05:07:40,252 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-19 05:07:40,253 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-19 05:07:40,253 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-19 05:07:40,254 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 05:07:40,255 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-19 05:07:40,255 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-19 05:07:40,255 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 05:07:40,256 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-19 05:07:40,256 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 05:07:40,257 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-19 05:07:40,257 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-19 05:07:40,258 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-19 05:07:40,258 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 05:07:40,258 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-19 05:07:40,258 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-19 05:07:40,258 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-19 05:07:40,259 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-19 05:07:40,259 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-19 05:07:40,259 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 05:07:40,259 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 05:07:40,260 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 05:07:40,260 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 05:07:40,260 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 05:07:40,260 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 05:07:40,261 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-19 05:07:40,261 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 05:07:40,261 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-19 05:07:40,261 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 05:07:40,261 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_a848fbba-5302-44ff-8ebf-c9b54f25eb1c/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a848fbba-5302-44ff-8ebf-c9b54f25eb1c/bin/utaipan-verify-t7M7D8N6sZ Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-memcleanup) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f4a8b24485e53fece96b44fdc12e6f161e1bbffda2cd597a930f4925e148dc01 [2023-11-19 05:07:40,567 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 05:07:40,607 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 05:07:40,611 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 05:07:40,612 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 05:07:40,612 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 05:07:40,614 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a848fbba-5302-44ff-8ebf-c9b54f25eb1c/bin/utaipan-verify-t7M7D8N6sZ/../../sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test9-1.i [2023-11-19 05:07:43,797 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 05:07:44,294 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 05:07:44,295 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a848fbba-5302-44ff-8ebf-c9b54f25eb1c/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test9-1.i [2023-11-19 05:07:44,331 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a848fbba-5302-44ff-8ebf-c9b54f25eb1c/bin/utaipan-verify-t7M7D8N6sZ/data/c5fddfabe/ec30e069a7e3470ca139472cabbad9a0/FLAG80c6ddafa [2023-11-19 05:07:44,351 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a848fbba-5302-44ff-8ebf-c9b54f25eb1c/bin/utaipan-verify-t7M7D8N6sZ/data/c5fddfabe/ec30e069a7e3470ca139472cabbad9a0 [2023-11-19 05:07:44,357 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 05:07:44,360 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 05:07:44,363 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 05:07:44,363 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 05:07:44,369 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 05:07:44,370 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 05:07:44" (1/1) ... [2023-11-19 05:07:44,371 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6e9fe291 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:07:44, skipping insertion in model container [2023-11-19 05:07:44,372 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 05:07:44" (1/1) ... [2023-11-19 05:07:44,468 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 05:07:45,445 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 05:07:45,467 ERROR L324 MainTranslator]: Unsupported Syntax: Found a cast between two array/pointer types of different sizes while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) [2023-11-19 05:07:45,477 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@5b255b07 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:07:45, skipping insertion in model container [2023-11-19 05:07:45,478 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 05:07:45,478 INFO L186 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2023-11-19 05:07:45,480 INFO L158 Benchmark]: Toolchain (without parser) took 1119.84ms. Allocated memory is still 167.8MB. Free memory was 130.8MB in the beginning and 98.0MB in the end (delta: 32.9MB). Peak memory consumption was 33.6MB. Max. memory is 16.1GB. [2023-11-19 05:07:45,481 INFO L158 Benchmark]: CDTParser took 0.30ms. Allocated memory is still 117.4MB. Free memory is still 72.5MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-19 05:07:45,482 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1115.36ms. Allocated memory is still 167.8MB. Free memory was 130.8MB in the beginning and 98.0MB in the end (delta: 32.9MB). Peak memory consumption was 33.6MB. Max. memory is 16.1GB. [2023-11-19 05:07:45,483 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30ms. Allocated memory is still 117.4MB. Free memory is still 72.5MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1115.36ms. Allocated memory is still 167.8MB. Free memory was 130.8MB in the beginning and 98.0MB in the end (delta: 32.9MB). Peak memory consumption was 33.6MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 2221]: Unsupported Syntax Found a cast between two array/pointer types of different sizes while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a848fbba-5302-44ff-8ebf-c9b54f25eb1c/bin/utaipan-verify-t7M7D8N6sZ/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a848fbba-5302-44ff-8ebf-c9b54f25eb1c/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_a848fbba-5302-44ff-8ebf-c9b54f25eb1c/bin/utaipan-verify-t7M7D8N6sZ/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a848fbba-5302-44ff-8ebf-c9b54f25eb1c/bin/utaipan-verify-t7M7D8N6sZ/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test9-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a848fbba-5302-44ff-8ebf-c9b54f25eb1c/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_a848fbba-5302-44ff-8ebf-c9b54f25eb1c/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 f4a8b24485e53fece96b44fdc12e6f161e1bbffda2cd597a930f4925e148dc01 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 05:07:47,920 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 05:07:48,055 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a848fbba-5302-44ff-8ebf-c9b54f25eb1c/bin/utaipan-verify-t7M7D8N6sZ/config/svcomp-MemCleanup-32bit-Taipan_Bitvector.epf [2023-11-19 05:07:48,066 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 05:07:48,066 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 05:07:48,111 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 05:07:48,112 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 05:07:48,113 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 05:07:48,114 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 05:07:48,119 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 05:07:48,119 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-19 05:07:48,120 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-19 05:07:48,120 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-19 05:07:48,122 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-19 05:07:48,122 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-19 05:07:48,123 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-19 05:07:48,123 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-19 05:07:48,124 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-19 05:07:48,125 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 05:07:48,125 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-19 05:07:48,125 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-19 05:07:48,126 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 05:07:48,126 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-19 05:07:48,127 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 05:07:48,127 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-19 05:07:48,127 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-19 05:07:48,128 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-19 05:07:48,128 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 05:07:48,129 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-19 05:07:48,129 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-19 05:07:48,130 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-11-19 05:07:48,131 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-11-19 05:07:48,131 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-19 05:07:48,131 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-19 05:07:48,131 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-19 05:07:48,132 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 05:07:48,133 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 05:07:48,133 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-19 05:07:48,133 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 05:07:48,133 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 05:07:48,134 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 05:07:48,134 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 05:07:48,134 INFO L153 SettingsManager]: * Trace refinement strategy=WALRUS [2023-11-19 05:07:48,134 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-11-19 05:07:48,135 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-19 05:07:48,135 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 05:07:48,135 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_a848fbba-5302-44ff-8ebf-c9b54f25eb1c/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a848fbba-5302-44ff-8ebf-c9b54f25eb1c/bin/utaipan-verify-t7M7D8N6sZ Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-memcleanup) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f4a8b24485e53fece96b44fdc12e6f161e1bbffda2cd597a930f4925e148dc01 [2023-11-19 05:07:48,589 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 05:07:48,624 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 05:07:48,627 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 05:07:48,628 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 05:07:48,630 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 05:07:48,632 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a848fbba-5302-44ff-8ebf-c9b54f25eb1c/bin/utaipan-verify-t7M7D8N6sZ/../../sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test9-1.i [2023-11-19 05:07:51,931 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 05:07:52,442 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 05:07:52,443 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a848fbba-5302-44ff-8ebf-c9b54f25eb1c/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test9-1.i [2023-11-19 05:07:52,474 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a848fbba-5302-44ff-8ebf-c9b54f25eb1c/bin/utaipan-verify-t7M7D8N6sZ/data/bc7a09e9a/e35d508c539b4df08cef765ed23b5659/FLAG51ddf9701 [2023-11-19 05:07:52,494 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a848fbba-5302-44ff-8ebf-c9b54f25eb1c/bin/utaipan-verify-t7M7D8N6sZ/data/bc7a09e9a/e35d508c539b4df08cef765ed23b5659 [2023-11-19 05:07:52,499 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 05:07:52,501 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 05:07:52,504 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 05:07:52,505 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 05:07:52,510 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 05:07:52,511 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 05:07:52" (1/1) ... [2023-11-19 05:07:52,512 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@766ed519 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:07:52, skipping insertion in model container [2023-11-19 05:07:52,512 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 05:07:52" (1/1) ... [2023-11-19 05:07:52,620 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 05:07:53,550 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 05:07:53,572 INFO L199 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2023-11-19 05:07:53,605 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 05:07:53,746 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 05:07:53,751 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 05:07:53,917 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 05:07:53,961 WARN L675 CHandler]: The function memcmp is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 05:07:53,969 INFO L206 MainTranslator]: Completed translation [2023-11-19 05:07:53,969 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:07:53 WrapperNode [2023-11-19 05:07:53,970 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 05:07:53,971 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 05:07:53,971 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 05:07:53,971 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 05:07:53,979 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:07:53" (1/1) ... [2023-11-19 05:07:54,046 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:07:53" (1/1) ... [2023-11-19 05:07:54,203 INFO L138 Inliner]: procedures = 180, calls = 732, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 2867 [2023-11-19 05:07:54,203 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 05:07:54,205 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 05:07:54,205 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 05:07:54,205 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 05:07:54,216 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:07:53" (1/1) ... [2023-11-19 05:07:54,216 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:07:53" (1/1) ... [2023-11-19 05:07:54,240 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:07:53" (1/1) ... [2023-11-19 05:07:54,240 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:07:53" (1/1) ... [2023-11-19 05:07:54,312 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:07:53" (1/1) ... [2023-11-19 05:07:54,336 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:07:53" (1/1) ... [2023-11-19 05:07:54,349 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:07:53" (1/1) ... [2023-11-19 05:07:54,360 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:07:53" (1/1) ... [2023-11-19 05:07:54,383 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 05:07:54,384 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 05:07:54,384 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 05:07:54,384 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 05:07:54,385 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:07:53" (1/1) ... [2023-11-19 05:07:54,391 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 05:07:54,402 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a848fbba-5302-44ff-8ebf-c9b54f25eb1c/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 05:07:54,418 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a848fbba-5302-44ff-8ebf-c9b54f25eb1c/bin/utaipan-verify-t7M7D8N6sZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 05:07:54,460 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a848fbba-5302-44ff-8ebf-c9b54f25eb1c/bin/utaipan-verify-t7M7D8N6sZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 05:07:54,470 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-11-19 05:07:54,471 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-11-19 05:07:54,471 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2023-11-19 05:07:54,471 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2023-11-19 05:07:54,471 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-11-19 05:07:54,473 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-11-19 05:07:54,473 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2023-11-19 05:07:54,473 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2023-11-19 05:07:54,473 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-19 05:07:54,473 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 05:07:54,474 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-19 05:07:54,474 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-19 05:07:54,474 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2023-11-19 05:07:54,474 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-19 05:07:54,475 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-19 05:07:54,475 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2023-11-19 05:07:54,476 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2023-11-19 05:07:54,476 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 05:07:54,476 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 05:07:54,773 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 05:07:54,778 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 05:08:04,951 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 05:08:04,972 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 05:08:04,972 INFO L302 CfgBuilder]: Removed 54 assume(true) statements. [2023-11-19 05:08:04,983 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 05:08:04 BoogieIcfgContainer [2023-11-19 05:08:04,984 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 05:08:04,986 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 05:08:04,986 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 05:08:04,989 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 05:08:04,990 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 05:07:52" (1/3) ... [2023-11-19 05:08:04,990 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5b9f4c91 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 05:08:04, skipping insertion in model container [2023-11-19 05:08:04,991 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:07:53" (2/3) ... [2023-11-19 05:08:04,991 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5b9f4c91 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 05:08:04, skipping insertion in model container [2023-11-19 05:08:04,991 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 05:08:04" (3/3) ... [2023-11-19 05:08:04,992 INFO L112 eAbstractionObserver]: Analyzing ICFG uthash_SFH_test9-1.i [2023-11-19 05:08:05,007 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 05:08:05,007 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-11-19 05:08:05,078 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 05:08:05,085 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;@55848dd0, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-19 05:08:05,086 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-11-19 05:08:05,096 INFO L276 IsEmpty]: Start isEmpty. Operand has 1176 states, 665 states have (on average 1.9142857142857144) internal successors, (1273), 1169 states have internal predecessors, (1273), 505 states have call successors, (505), 3 states have call predecessors, (505), 3 states have return successors, (505), 6 states have call predecessors, (505), 505 states have call successors, (505) [2023-11-19 05:08:05,102 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2023-11-19 05:08:05,102 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:08:05,103 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-19 05:08:05,103 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2023-11-19 05:08:05,108 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:08:05,109 INFO L85 PathProgramCache]: Analyzing trace with hash 569959193, now seen corresponding path program 1 times [2023-11-19 05:08:05,122 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-19 05:08:05,122 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1415021824] [2023-11-19 05:08:05,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:08:05,123 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-19 05:08:05,123 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a848fbba-5302-44ff-8ebf-c9b54f25eb1c/bin/utaipan-verify-t7M7D8N6sZ/mathsat [2023-11-19 05:08:05,130 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a848fbba-5302-44ff-8ebf-c9b54f25eb1c/bin/utaipan-verify-t7M7D8N6sZ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-19 05:08:05,134 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a848fbba-5302-44ff-8ebf-c9b54f25eb1c/bin/utaipan-verify-t7M7D8N6sZ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2023-11-19 05:08:05,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:08:05,337 INFO L262 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 1 conjunts are in the unsatisfiable core [2023-11-19 05:08:05,343 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 05:08:05,366 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:08:05,367 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 05:08:05,367 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-19 05:08:05,368 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1415021824] [2023-11-19 05:08:05,368 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1415021824] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:08:05,369 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:08:05,369 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 05:08:05,371 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1068799859] [2023-11-19 05:08:05,371 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:08:05,376 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-19 05:08:05,376 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-19 05:08:05,418 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-19 05:08:05,419 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-19 05:08:05,426 INFO L87 Difference]: Start difference. First operand has 1176 states, 665 states have (on average 1.9142857142857144) internal successors, (1273), 1169 states have internal predecessors, (1273), 505 states have call successors, (505), 3 states have call predecessors, (505), 3 states have return successors, (505), 6 states have call predecessors, (505), 505 states have call successors, (505) Second operand has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:08:05,569 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:08:05,569 INFO L93 Difference]: Finished difference Result 1174 states and 2220 transitions. [2023-11-19 05:08:05,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-19 05:08:05,571 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2023-11-19 05:08:05,572 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:08:05,603 INFO L225 Difference]: With dead ends: 1174 [2023-11-19 05:08:05,604 INFO L226 Difference]: Without dead ends: 1172 [2023-11-19 05:08:05,605 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-19 05:08:05,608 INFO L413 NwaCegarLoop]: 2220 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 2220 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 05:08:05,609 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 2220 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 05:08:05,630 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1172 states. [2023-11-19 05:08:06,092 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1172 to 1172. [2023-11-19 05:08:06,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1172 states, 663 states have (on average 1.8250377073906485) internal successors, (1210), 1165 states have internal predecessors, (1210), 505 states have call successors, (505), 3 states have call predecessors, (505), 2 states have return successors, (503), 4 states have call predecessors, (503), 503 states have call successors, (503) [2023-11-19 05:08:06,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1172 states to 1172 states and 2218 transitions. [2023-11-19 05:08:06,127 INFO L78 Accepts]: Start accepts. Automaton has 1172 states and 2218 transitions. Word has length 7 [2023-11-19 05:08:06,127 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:08:06,128 INFO L495 AbstractCegarLoop]: Abstraction has 1172 states and 2218 transitions. [2023-11-19 05:08:06,128 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:08:06,129 INFO L276 IsEmpty]: Start isEmpty. Operand 1172 states and 2218 transitions. [2023-11-19 05:08:06,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2023-11-19 05:08:06,129 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:08:06,130 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 05:08:06,142 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a848fbba-5302-44ff-8ebf-c9b54f25eb1c/bin/utaipan-verify-t7M7D8N6sZ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2023-11-19 05:08:06,333 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a848fbba-5302-44ff-8ebf-c9b54f25eb1c/bin/utaipan-verify-t7M7D8N6sZ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-19 05:08:06,334 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2023-11-19 05:08:06,334 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:08:06,334 INFO L85 PathProgramCache]: Analyzing trace with hash -2048385593, now seen corresponding path program 1 times [2023-11-19 05:08:06,335 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-19 05:08:06,335 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1628424761] [2023-11-19 05:08:06,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:08:06,335 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-19 05:08:06,336 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a848fbba-5302-44ff-8ebf-c9b54f25eb1c/bin/utaipan-verify-t7M7D8N6sZ/mathsat [2023-11-19 05:08:06,337 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a848fbba-5302-44ff-8ebf-c9b54f25eb1c/bin/utaipan-verify-t7M7D8N6sZ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-19 05:08:06,338 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a848fbba-5302-44ff-8ebf-c9b54f25eb1c/bin/utaipan-verify-t7M7D8N6sZ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2023-11-19 05:08:06,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:08:06,580 INFO L262 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-19 05:08:06,583 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 05:08:06,641 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-19 05:08:06,641 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-19 05:08:06,651 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 31 [2023-11-19 05:08:06,734 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-19 05:08:06,735 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 62 treesize of output 22 [2023-11-19 05:08:06,774 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:08:06,774 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 05:08:06,776 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-19 05:08:06,781 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1628424761] [2023-11-19 05:08:06,782 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1628424761] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:08:06,782 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:08:06,783 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 05:08:06,783 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [425021253] [2023-11-19 05:08:06,783 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:08:06,784 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 05:08:06,785 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-19 05:08:06,785 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 05:08:06,786 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-19 05:08:06,786 INFO L87 Difference]: Start difference. First operand 1172 states and 2218 transitions. Second operand has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:08:11,387 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-19 05:08:15,474 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:08:15,485 INFO L93 Difference]: Finished difference Result 2241 states and 4308 transitions. [2023-11-19 05:08:15,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 05:08:15,487 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2023-11-19 05:08:15,487 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:08:15,511 INFO L225 Difference]: With dead ends: 2241 [2023-11-19 05:08:15,511 INFO L226 Difference]: Without dead ends: 2241 [2023-11-19 05:08:15,511 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-19 05:08:15,513 INFO L413 NwaCegarLoop]: 2242 mSDtfsCounter, 1086 mSDsluCounter, 3889 mSDsCounter, 0 mSdLazyCounter, 618 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1586 SdHoareTripleChecker+Valid, 6131 SdHoareTripleChecker+Invalid, 620 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 618 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.5s IncrementalHoareTripleChecker+Time [2023-11-19 05:08:15,513 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1586 Valid, 6131 Invalid, 620 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 618 Invalid, 1 Unknown, 0 Unchecked, 8.5s Time] [2023-11-19 05:08:15,519 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2241 states. [2023-11-19 05:08:16,024 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2241 to 1174. [2023-11-19 05:08:16,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1174 states, 665 states have (on average 1.8225563909774436) internal successors, (1212), 1167 states have internal predecessors, (1212), 505 states have call successors, (505), 3 states have call predecessors, (505), 2 states have return successors, (503), 4 states have call predecessors, (503), 503 states have call successors, (503) [2023-11-19 05:08:16,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1174 states to 1174 states and 2220 transitions. [2023-11-19 05:08:16,037 INFO L78 Accepts]: Start accepts. Automaton has 1174 states and 2220 transitions. Word has length 9 [2023-11-19 05:08:16,037 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:08:16,037 INFO L495 AbstractCegarLoop]: Abstraction has 1174 states and 2220 transitions. [2023-11-19 05:08:16,038 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:08:16,038 INFO L276 IsEmpty]: Start isEmpty. Operand 1174 states and 2220 transitions. [2023-11-19 05:08:16,040 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2023-11-19 05:08:16,041 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:08:16,041 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 05:08:16,050 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a848fbba-5302-44ff-8ebf-c9b54f25eb1c/bin/utaipan-verify-t7M7D8N6sZ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2023-11-19 05:08:16,250 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a848fbba-5302-44ff-8ebf-c9b54f25eb1c/bin/utaipan-verify-t7M7D8N6sZ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-19 05:08:16,251 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2023-11-19 05:08:16,252 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:08:16,252 INFO L85 PathProgramCache]: Analyzing trace with hash -492190727, now seen corresponding path program 1 times [2023-11-19 05:08:16,253 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-19 05:08:16,253 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1448793488] [2023-11-19 05:08:16,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:08:16,253 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-19 05:08:16,253 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a848fbba-5302-44ff-8ebf-c9b54f25eb1c/bin/utaipan-verify-t7M7D8N6sZ/mathsat [2023-11-19 05:08:16,255 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a848fbba-5302-44ff-8ebf-c9b54f25eb1c/bin/utaipan-verify-t7M7D8N6sZ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-19 05:08:16,267 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a848fbba-5302-44ff-8ebf-c9b54f25eb1c/bin/utaipan-verify-t7M7D8N6sZ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2023-11-19 05:08:16,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:08:16,720 INFO L262 TraceCheckSpWp]: Trace formula consists of 351 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-19 05:08:16,724 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 05:08:16,764 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:08:16,764 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 05:08:16,765 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-19 05:08:16,765 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1448793488] [2023-11-19 05:08:16,765 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1448793488] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:08:16,765 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:08:16,765 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 05:08:16,766 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [713352784] [2023-11-19 05:08:16,766 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:08:16,766 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 05:08:16,767 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-19 05:08:16,767 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 05:08:16,768 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-19 05:08:16,768 INFO L87 Difference]: Start difference. First operand 1174 states and 2220 transitions. Second operand has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:08:16,984 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:08:16,984 INFO L93 Difference]: Finished difference Result 1178 states and 2216 transitions. [2023-11-19 05:08:16,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 05:08:16,985 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 65 [2023-11-19 05:08:16,986 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:08:16,996 INFO L225 Difference]: With dead ends: 1178 [2023-11-19 05:08:16,996 INFO L226 Difference]: Without dead ends: 1178 [2023-11-19 05:08:16,997 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-19 05:08:17,000 INFO L413 NwaCegarLoop]: 2189 mSDtfsCounter, 36 mSDsluCounter, 4352 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 6541 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 05:08:17,002 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 6541 Invalid, 62 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 05:08:17,006 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1178 states. [2023-11-19 05:08:17,271 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1178 to 1177. [2023-11-19 05:08:17,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1177 states, 668 states have (on average 1.8068862275449102) internal successors, (1207), 1170 states have internal predecessors, (1207), 505 states have call successors, (505), 3 states have call predecessors, (505), 2 states have return successors, (503), 4 states have call predecessors, (503), 503 states have call successors, (503) [2023-11-19 05:08:17,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1177 states to 1177 states and 2215 transitions. [2023-11-19 05:08:17,288 INFO L78 Accepts]: Start accepts. Automaton has 1177 states and 2215 transitions. Word has length 65 [2023-11-19 05:08:17,288 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:08:17,289 INFO L495 AbstractCegarLoop]: Abstraction has 1177 states and 2215 transitions. [2023-11-19 05:08:17,289 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:08:17,289 INFO L276 IsEmpty]: Start isEmpty. Operand 1177 states and 2215 transitions. [2023-11-19 05:08:17,300 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2023-11-19 05:08:17,300 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:08:17,301 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 05:08:17,318 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a848fbba-5302-44ff-8ebf-c9b54f25eb1c/bin/utaipan-verify-t7M7D8N6sZ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2023-11-19 05:08:17,518 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a848fbba-5302-44ff-8ebf-c9b54f25eb1c/bin/utaipan-verify-t7M7D8N6sZ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-19 05:08:17,518 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2023-11-19 05:08:17,519 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:08:17,519 INFO L85 PathProgramCache]: Analyzing trace with hash 1261701997, now seen corresponding path program 1 times [2023-11-19 05:08:17,520 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-19 05:08:17,520 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1508966992] [2023-11-19 05:08:17,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:08:17,520 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-19 05:08:17,520 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a848fbba-5302-44ff-8ebf-c9b54f25eb1c/bin/utaipan-verify-t7M7D8N6sZ/mathsat [2023-11-19 05:08:17,521 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a848fbba-5302-44ff-8ebf-c9b54f25eb1c/bin/utaipan-verify-t7M7D8N6sZ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-19 05:08:17,523 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a848fbba-5302-44ff-8ebf-c9b54f25eb1c/bin/utaipan-verify-t7M7D8N6sZ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2023-11-19 05:08:17,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:08:17,995 INFO L262 TraceCheckSpWp]: Trace formula consists of 345 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-19 05:08:17,999 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 05:08:18,346 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:08:18,346 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 05:08:18,346 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-19 05:08:18,346 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1508966992] [2023-11-19 05:08:18,347 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1508966992] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:08:18,347 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:08:18,347 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 05:08:18,347 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1755685476] [2023-11-19 05:08:18,347 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:08:18,348 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 05:08:18,348 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-19 05:08:18,348 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 05:08:18,348 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 05:08:18,349 INFO L87 Difference]: Start difference. First operand 1177 states and 2215 transitions. Second operand has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:08:19,479 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:08:19,480 INFO L93 Difference]: Finished difference Result 2269 states and 4324 transitions. [2023-11-19 05:08:19,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 05:08:19,481 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 65 [2023-11-19 05:08:19,481 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:08:19,499 INFO L225 Difference]: With dead ends: 2269 [2023-11-19 05:08:19,499 INFO L226 Difference]: Without dead ends: 2269 [2023-11-19 05:08:19,500 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 05:08:19,501 INFO L413 NwaCegarLoop]: 2267 mSDtfsCounter, 1072 mSDsluCounter, 2185 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1574 SdHoareTripleChecker+Valid, 4452 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-11-19 05:08:19,501 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1574 Valid, 4452 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-11-19 05:08:19,505 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2269 states. [2023-11-19 05:08:19,902 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2269 to 2265. [2023-11-19 05:08:19,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2265 states, 1256 states have (on average 1.84156050955414) internal successors, (2313), 2258 states have internal predecessors, (2313), 1005 states have call successors, (1005), 3 states have call predecessors, (1005), 2 states have return successors, (1003), 5 states have call predecessors, (1003), 1003 states have call successors, (1003) [2023-11-19 05:08:19,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2265 states to 2265 states and 4321 transitions. [2023-11-19 05:08:19,924 INFO L78 Accepts]: Start accepts. Automaton has 2265 states and 4321 transitions. Word has length 65 [2023-11-19 05:08:19,925 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:08:19,925 INFO L495 AbstractCegarLoop]: Abstraction has 2265 states and 4321 transitions. [2023-11-19 05:08:19,926 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:08:19,926 INFO L276 IsEmpty]: Start isEmpty. Operand 2265 states and 4321 transitions. [2023-11-19 05:08:19,928 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2023-11-19 05:08:19,928 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:08:19,928 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 05:08:19,941 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a848fbba-5302-44ff-8ebf-c9b54f25eb1c/bin/utaipan-verify-t7M7D8N6sZ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2023-11-19 05:08:20,140 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a848fbba-5302-44ff-8ebf-c9b54f25eb1c/bin/utaipan-verify-t7M7D8N6sZ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-19 05:08:20,140 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2023-11-19 05:08:20,141 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:08:20,141 INFO L85 PathProgramCache]: Analyzing trace with hash 478967154, now seen corresponding path program 1 times [2023-11-19 05:08:20,142 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-19 05:08:20,142 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2119036789] [2023-11-19 05:08:20,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:08:20,142 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-19 05:08:20,143 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a848fbba-5302-44ff-8ebf-c9b54f25eb1c/bin/utaipan-verify-t7M7D8N6sZ/mathsat [2023-11-19 05:08:20,148 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a848fbba-5302-44ff-8ebf-c9b54f25eb1c/bin/utaipan-verify-t7M7D8N6sZ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-19 05:08:20,188 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a848fbba-5302-44ff-8ebf-c9b54f25eb1c/bin/utaipan-verify-t7M7D8N6sZ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2023-11-19 05:08:20,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:08:20,699 INFO L262 TraceCheckSpWp]: Trace formula consists of 476 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-19 05:08:20,703 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 05:08:20,733 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:08:20,734 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 05:08:20,734 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-19 05:08:20,734 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2119036789] [2023-11-19 05:08:20,734 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2119036789] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:08:20,734 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:08:20,734 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 05:08:20,734 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2077979446] [2023-11-19 05:08:20,734 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:08:20,735 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 05:08:20,735 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-19 05:08:20,736 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 05:08:20,736 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-19 05:08:20,736 INFO L87 Difference]: Start difference. First operand 2265 states and 4321 transitions. Second operand has 4 states, 4 states have (on average 19.0) internal successors, (76), 4 states have internal predecessors, (76), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-19 05:08:20,849 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:08:20,849 INFO L93 Difference]: Finished difference Result 2268 states and 4325 transitions. [2023-11-19 05:08:20,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 05:08:20,850 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.0) internal successors, (76), 4 states have internal predecessors, (76), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) Word has length 80 [2023-11-19 05:08:20,851 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:08:20,870 INFO L225 Difference]: With dead ends: 2268 [2023-11-19 05:08:20,871 INFO L226 Difference]: Without dead ends: 2268 [2023-11-19 05:08:20,871 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 77 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-19 05:08:20,872 INFO L413 NwaCegarLoop]: 2204 mSDtfsCounter, 2 mSDsluCounter, 4404 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 6608 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 05:08:20,872 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 6608 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 05:08:20,876 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2268 states. [2023-11-19 05:08:21,348 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2268 to 2268. [2023-11-19 05:08:21,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2268 states, 1258 states have (on average 1.8410174880763117) internal successors, (2316), 2261 states have internal predecessors, (2316), 1005 states have call successors, (1005), 3 states have call predecessors, (1005), 3 states have return successors, (1004), 5 states have call predecessors, (1004), 1003 states have call successors, (1004) [2023-11-19 05:08:21,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2268 states to 2268 states and 4325 transitions. [2023-11-19 05:08:21,372 INFO L78 Accepts]: Start accepts. Automaton has 2268 states and 4325 transitions. Word has length 80 [2023-11-19 05:08:21,373 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:08:21,373 INFO L495 AbstractCegarLoop]: Abstraction has 2268 states and 4325 transitions. [2023-11-19 05:08:21,373 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.0) internal successors, (76), 4 states have internal predecessors, (76), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-19 05:08:21,373 INFO L276 IsEmpty]: Start isEmpty. Operand 2268 states and 4325 transitions. [2023-11-19 05:08:21,374 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2023-11-19 05:08:21,374 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:08:21,375 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 05:08:21,392 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a848fbba-5302-44ff-8ebf-c9b54f25eb1c/bin/utaipan-verify-t7M7D8N6sZ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2023-11-19 05:08:21,584 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a848fbba-5302-44ff-8ebf-c9b54f25eb1c/bin/utaipan-verify-t7M7D8N6sZ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-19 05:08:21,584 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2023-11-19 05:08:21,585 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:08:21,585 INFO L85 PathProgramCache]: Analyzing trace with hash 1880410096, now seen corresponding path program 1 times [2023-11-19 05:08:21,587 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-19 05:08:21,587 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [772947804] [2023-11-19 05:08:21,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:08:21,588 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-19 05:08:21,588 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a848fbba-5302-44ff-8ebf-c9b54f25eb1c/bin/utaipan-verify-t7M7D8N6sZ/mathsat [2023-11-19 05:08:21,589 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a848fbba-5302-44ff-8ebf-c9b54f25eb1c/bin/utaipan-verify-t7M7D8N6sZ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-19 05:08:21,629 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a848fbba-5302-44ff-8ebf-c9b54f25eb1c/bin/utaipan-verify-t7M7D8N6sZ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2023-11-19 05:08:22,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:08:22,260 INFO L262 TraceCheckSpWp]: Trace formula consists of 498 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-19 05:08:22,264 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 05:08:22,322 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 9 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-19 05:08:22,322 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 05:08:22,452 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-19 05:08:22,452 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-19 05:08:22,452 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [772947804] [2023-11-19 05:08:22,452 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [772947804] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 05:08:22,452 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1137247572] [2023-11-19 05:08:22,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:08:22,453 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-11-19 05:08:22,453 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a848fbba-5302-44ff-8ebf-c9b54f25eb1c/bin/utaipan-verify-t7M7D8N6sZ/cvc4 [2023-11-19 05:08:22,459 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a848fbba-5302-44ff-8ebf-c9b54f25eb1c/bin/utaipan-verify-t7M7D8N6sZ/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-11-19 05:08:22,470 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a848fbba-5302-44ff-8ebf-c9b54f25eb1c/bin/utaipan-verify-t7M7D8N6sZ/cvc4 --incremental --print-success --lang smt (8)] Waiting until timeout for monitored process [2023-11-19 05:08:23,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:08:23,316 INFO L262 TraceCheckSpWp]: Trace formula consists of 498 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-19 05:08:23,325 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 05:08:23,349 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 9 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-19 05:08:23,349 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 05:08:23,404 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-19 05:08:23,404 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1137247572] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 05:08:23,404 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [43706182] [2023-11-19 05:08:23,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:08:23,405 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 05:08:23,405 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a848fbba-5302-44ff-8ebf-c9b54f25eb1c/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 05:08:23,407 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a848fbba-5302-44ff-8ebf-c9b54f25eb1c/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 05:08:23,420 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a848fbba-5302-44ff-8ebf-c9b54f25eb1c/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-19 05:08:23,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:08:23,938 INFO L262 TraceCheckSpWp]: Trace formula consists of 498 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-19 05:08:23,941 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 05:08:23,971 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-19 05:08:23,971 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 05:08:24,111 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-19 05:08:24,111 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [43706182] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 05:08:24,112 INFO L185 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2023-11-19 05:08:24,112 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5, 5, 5, 5] total 11 [2023-11-19 05:08:24,112 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1148153932] [2023-11-19 05:08:24,112 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2023-11-19 05:08:24,114 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-19 05:08:24,114 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-19 05:08:24,115 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-19 05:08:24,115 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2023-11-19 05:08:24,115 INFO L87 Difference]: Start difference. First operand 2268 states and 4325 transitions. Second operand has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 2 states have call successors, (4), 2 states have call predecessors, (4), 5 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-11-19 05:08:24,700 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:08:24,700 INFO L93 Difference]: Finished difference Result 2283 states and 4347 transitions. [2023-11-19 05:08:24,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-19 05:08:24,701 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 2 states have call successors, (4), 2 states have call predecessors, (4), 5 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 82 [2023-11-19 05:08:24,701 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:08:24,720 INFO L225 Difference]: With dead ends: 2283 [2023-11-19 05:08:24,720 INFO L226 Difference]: Without dead ends: 2283 [2023-11-19 05:08:24,721 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 497 GetRequests, 477 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=156, Invalid=306, Unknown=0, NotChecked=0, Total=462 [2023-11-19 05:08:24,722 INFO L413 NwaCegarLoop]: 2204 mSDtfsCounter, 20 mSDsluCounter, 13199 mSDsCounter, 0 mSdLazyCounter, 73 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 15403 SdHoareTripleChecker+Invalid, 89 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 73 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-19 05:08:24,722 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 15403 Invalid, 89 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [16 Valid, 73 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-19 05:08:24,726 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2283 states. [2023-11-19 05:08:25,267 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2283 to 2279. [2023-11-19 05:08:25,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2279 states, 1268 states have (on average 1.8406940063091484) internal successors, (2334), 2271 states have internal predecessors, (2334), 1005 states have call successors, (1005), 4 states have call predecessors, (1005), 4 states have return successors, (1004), 5 states have call predecessors, (1004), 1003 states have call successors, (1004) [2023-11-19 05:08:25,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2279 states to 2279 states and 4343 transitions. [2023-11-19 05:08:25,290 INFO L78 Accepts]: Start accepts. Automaton has 2279 states and 4343 transitions. Word has length 82 [2023-11-19 05:08:25,291 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:08:25,291 INFO L495 AbstractCegarLoop]: Abstraction has 2279 states and 4343 transitions. [2023-11-19 05:08:25,292 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 2 states have call successors, (4), 2 states have call predecessors, (4), 5 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-11-19 05:08:25,292 INFO L276 IsEmpty]: Start isEmpty. Operand 2279 states and 4343 transitions. [2023-11-19 05:08:25,293 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2023-11-19 05:08:25,294 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:08:25,294 INFO L195 NwaCegarLoop]: trace histogram [8, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 05:08:25,309 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a848fbba-5302-44ff-8ebf-c9b54f25eb1c/bin/utaipan-verify-t7M7D8N6sZ/cvc4 --incremental --print-success --lang smt (8)] Forceful destruction successful, exit code 0 [2023-11-19 05:08:25,532 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a848fbba-5302-44ff-8ebf-c9b54f25eb1c/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-11-19 05:08:25,722 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a848fbba-5302-44ff-8ebf-c9b54f25eb1c/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)] Ended with exit code 0 [2023-11-19 05:08:25,912 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a848fbba-5302-44ff-8ebf-c9b54f25eb1c/bin/utaipan-verify-t7M7D8N6sZ/cvc4 --incremental --print-success --lang smt,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a848fbba-5302-44ff-8ebf-c9b54f25eb1c/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a848fbba-5302-44ff-8ebf-c9b54f25eb1c/bin/utaipan-verify-t7M7D8N6sZ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-19 05:08:25,912 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2023-11-19 05:08:25,913 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:08:25,913 INFO L85 PathProgramCache]: Analyzing trace with hash -1381279118, now seen corresponding path program 2 times [2023-11-19 05:08:25,914 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-19 05:08:25,914 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1641025507] [2023-11-19 05:08:25,914 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-19 05:08:25,914 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-19 05:08:25,915 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a848fbba-5302-44ff-8ebf-c9b54f25eb1c/bin/utaipan-verify-t7M7D8N6sZ/mathsat [2023-11-19 05:08:25,916 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a848fbba-5302-44ff-8ebf-c9b54f25eb1c/bin/utaipan-verify-t7M7D8N6sZ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-19 05:08:25,941 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a848fbba-5302-44ff-8ebf-c9b54f25eb1c/bin/utaipan-verify-t7M7D8N6sZ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2023-11-19 05:08:26,331 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-19 05:08:26,332 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-19 05:08:26,339 INFO L262 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-19 05:08:26,343 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 05:08:26,361 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-19 05:08:26,364 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-19 05:08:26,365 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-19 05:08:26,372 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 39 [2023-11-19 05:08:26,437 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-19 05:08:26,437 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 70 treesize of output 26 [2023-11-19 05:08:26,457 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2023-11-19 05:08:26,458 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 05:08:26,458 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-19 05:08:26,458 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1641025507] [2023-11-19 05:08:26,458 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1641025507] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:08:26,459 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:08:26,459 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 05:08:26,459 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [973301208] [2023-11-19 05:08:26,459 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:08:26,460 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 05:08:26,460 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-19 05:08:26,461 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 05:08:26,461 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-19 05:08:26,461 INFO L87 Difference]: Start difference. First operand 2279 states and 4343 transitions. Second operand has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-19 05:08:28,250 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.04s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-19 05:08:30,612 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 []