./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memcleanup.prp --file ../../sv-benchmarks/c/list-properties/list_search-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (memcleanup) Using default analysis Version 9bd2c7ff Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b80ca085-b4db-49ba-8982-645a291f58f9/bin/utaipan-verify-t7M7D8N6sZ/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b80ca085-b4db-49ba-8982-645a291f58f9/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_b80ca085-b4db-49ba-8982-645a291f58f9/bin/utaipan-verify-t7M7D8N6sZ/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b80ca085-b4db-49ba-8982-645a291f58f9/bin/utaipan-verify-t7M7D8N6sZ/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/list-properties/list_search-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b80ca085-b4db-49ba-8982-645a291f58f9/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_b80ca085-b4db-49ba-8982-645a291f58f9/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 b1ea7ddff382751fa0e11562333bdb4981cac7bdbf1d356a007804e7e2e5a289 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 04:58:49,772 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 04:58:49,900 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b80ca085-b4db-49ba-8982-645a291f58f9/bin/utaipan-verify-t7M7D8N6sZ/config/svcomp-MemCleanup-32bit-Taipan_Default.epf [2023-11-19 04:58:49,909 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 04:58:49,910 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 04:58:49,951 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 04:58:49,951 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 04:58:49,952 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 04:58:49,953 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 04:58:49,958 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 04:58:49,959 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-19 04:58:49,959 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-19 04:58:49,960 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-19 04:58:49,961 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-19 04:58:49,962 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-19 04:58:49,962 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-19 04:58:49,963 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-19 04:58:49,963 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-19 04:58:49,964 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-19 04:58:49,964 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-19 04:58:49,965 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-19 04:58:49,965 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-19 04:58:49,966 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-19 04:58:49,966 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-19 04:58:49,967 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 04:58:49,968 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-19 04:58:49,968 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-19 04:58:49,969 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 04:58:49,969 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-19 04:58:49,969 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 04:58:49,971 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-19 04:58:49,971 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-19 04:58:49,971 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-19 04:58:49,971 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 04:58:49,972 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-19 04:58:49,972 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-19 04:58:49,972 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-19 04:58:49,972 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-19 04:58:49,973 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-19 04:58:49,973 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 04:58:49,973 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 04:58:49,974 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 04:58:49,974 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 04:58:49,974 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 04:58:49,975 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 04:58:49,975 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-19 04:58:49,975 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 04:58:49,975 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-19 04:58:49,976 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 04:58:49,976 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_b80ca085-b4db-49ba-8982-645a291f58f9/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b80ca085-b4db-49ba-8982-645a291f58f9/bin/utaipan-verify-t7M7D8N6sZ Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-memcleanup) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b1ea7ddff382751fa0e11562333bdb4981cac7bdbf1d356a007804e7e2e5a289 [2023-11-19 04:58:50,299 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 04:58:50,333 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 04:58:50,335 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 04:58:50,336 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 04:58:50,337 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 04:58:50,339 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b80ca085-b4db-49ba-8982-645a291f58f9/bin/utaipan-verify-t7M7D8N6sZ/../../sv-benchmarks/c/list-properties/list_search-2.i [2023-11-19 04:58:53,506 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 04:58:53,847 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 04:58:53,848 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b80ca085-b4db-49ba-8982-645a291f58f9/sv-benchmarks/c/list-properties/list_search-2.i [2023-11-19 04:58:53,866 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b80ca085-b4db-49ba-8982-645a291f58f9/bin/utaipan-verify-t7M7D8N6sZ/data/999fabeea/4e04c7b64f8f4db08a393a1bd05d7de4/FLAG4eeb24534 [2023-11-19 04:58:53,882 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b80ca085-b4db-49ba-8982-645a291f58f9/bin/utaipan-verify-t7M7D8N6sZ/data/999fabeea/4e04c7b64f8f4db08a393a1bd05d7de4 [2023-11-19 04:58:53,885 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 04:58:53,886 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 04:58:53,888 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 04:58:53,888 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 04:58:53,894 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 04:58:53,895 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 04:58:53" (1/1) ... [2023-11-19 04:58:53,896 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3e3cf033 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:58:53, skipping insertion in model container [2023-11-19 04:58:53,896 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 04:58:53" (1/1) ... [2023-11-19 04:58:53,968 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 04:58:54,459 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 04:58:54,475 ERROR L324 MainTranslator]: Unsupported Syntax: Found a cast between two array/pointer types of different sizes while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) [2023-11-19 04:58:54,477 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@47dab17e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:58:54, skipping insertion in model container [2023-11-19 04:58:54,477 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 04:58:54,478 INFO L186 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2023-11-19 04:58:54,480 INFO L158 Benchmark]: Toolchain (without parser) took 592.50ms. Allocated memory is still 205.5MB. Free memory was 155.6MB in the beginning and 141.6MB in the end (delta: 14.0MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2023-11-19 04:58:54,481 INFO L158 Benchmark]: CDTParser took 0.18ms. Allocated memory is still 146.8MB. Free memory is still 87.7MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-19 04:58:54,482 INFO L158 Benchmark]: CACSL2BoogieTranslator took 589.63ms. Allocated memory is still 205.5MB. Free memory was 154.9MB in the beginning and 141.6MB in the end (delta: 13.3MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2023-11-19 04:58:54,484 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18ms. Allocated memory is still 146.8MB. Free memory is still 87.7MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 589.63ms. Allocated memory is still 205.5MB. Free memory was 154.9MB in the beginning and 141.6MB in the end (delta: 13.3MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 792]: Unsupported Syntax Found a cast between two array/pointer types of different sizes while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b80ca085-b4db-49ba-8982-645a291f58f9/bin/utaipan-verify-t7M7D8N6sZ/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b80ca085-b4db-49ba-8982-645a291f58f9/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_b80ca085-b4db-49ba-8982-645a291f58f9/bin/utaipan-verify-t7M7D8N6sZ/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b80ca085-b4db-49ba-8982-645a291f58f9/bin/utaipan-verify-t7M7D8N6sZ/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/list-properties/list_search-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b80ca085-b4db-49ba-8982-645a291f58f9/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_b80ca085-b4db-49ba-8982-645a291f58f9/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 b1ea7ddff382751fa0e11562333bdb4981cac7bdbf1d356a007804e7e2e5a289 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 04:58:56,916 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 04:58:57,037 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b80ca085-b4db-49ba-8982-645a291f58f9/bin/utaipan-verify-t7M7D8N6sZ/config/svcomp-MemCleanup-32bit-Taipan_Bitvector.epf [2023-11-19 04:58:57,048 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 04:58:57,049 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 04:58:57,090 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 04:58:57,090 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 04:58:57,091 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 04:58:57,092 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 04:58:57,092 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 04:58:57,093 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-19 04:58:57,094 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-19 04:58:57,094 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-19 04:58:57,095 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-19 04:58:57,095 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-19 04:58:57,096 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-19 04:58:57,097 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-19 04:58:57,097 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-19 04:58:57,098 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 04:58:57,098 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-19 04:58:57,099 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-19 04:58:57,099 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 04:58:57,100 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-19 04:58:57,100 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 04:58:57,101 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-19 04:58:57,101 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-19 04:58:57,102 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-19 04:58:57,103 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 04:58:57,103 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-19 04:58:57,103 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-19 04:58:57,104 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-11-19 04:58:57,104 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-11-19 04:58:57,105 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-19 04:58:57,105 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-19 04:58:57,106 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-19 04:58:57,106 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 04:58:57,107 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 04:58:57,107 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-19 04:58:57,108 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 04:58:57,108 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 04:58:57,109 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 04:58:57,109 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 04:58:57,109 INFO L153 SettingsManager]: * Trace refinement strategy=WALRUS [2023-11-19 04:58:57,110 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-11-19 04:58:57,110 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-19 04:58:57,111 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 04:58:57,111 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_b80ca085-b4db-49ba-8982-645a291f58f9/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b80ca085-b4db-49ba-8982-645a291f58f9/bin/utaipan-verify-t7M7D8N6sZ Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-memcleanup) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b1ea7ddff382751fa0e11562333bdb4981cac7bdbf1d356a007804e7e2e5a289 [2023-11-19 04:58:57,460 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 04:58:57,482 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 04:58:57,485 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 04:58:57,486 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 04:58:57,488 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 04:58:57,490 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b80ca085-b4db-49ba-8982-645a291f58f9/bin/utaipan-verify-t7M7D8N6sZ/../../sv-benchmarks/c/list-properties/list_search-2.i [2023-11-19 04:59:00,601 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 04:59:00,977 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 04:59:00,978 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b80ca085-b4db-49ba-8982-645a291f58f9/sv-benchmarks/c/list-properties/list_search-2.i [2023-11-19 04:59:00,995 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b80ca085-b4db-49ba-8982-645a291f58f9/bin/utaipan-verify-t7M7D8N6sZ/data/8c5d2b5db/c825c31abf6f4247ab51af228d679142/FLAG6a7d2ea60 [2023-11-19 04:59:01,010 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b80ca085-b4db-49ba-8982-645a291f58f9/bin/utaipan-verify-t7M7D8N6sZ/data/8c5d2b5db/c825c31abf6f4247ab51af228d679142 [2023-11-19 04:59:01,013 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 04:59:01,014 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 04:59:01,016 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 04:59:01,016 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 04:59:01,022 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 04:59:01,023 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 04:59:01" (1/1) ... [2023-11-19 04:59:01,024 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@52051fc8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:59:01, skipping insertion in model container [2023-11-19 04:59:01,025 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 04:59:01" (1/1) ... [2023-11-19 04:59:01,096 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 04:59:01,528 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 04:59:01,542 INFO L199 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2023-11-19 04:59:01,549 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 04:59:01,582 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 04:59:01,586 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 04:59:01,639 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 04:59:01,702 INFO L206 MainTranslator]: Completed translation [2023-11-19 04:59:01,702 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:59:01 WrapperNode [2023-11-19 04:59:01,702 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 04:59:01,703 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 04:59:01,704 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 04:59:01,704 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 04:59:01,711 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:59:01" (1/1) ... [2023-11-19 04:59:01,734 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:59:01" (1/1) ... [2023-11-19 04:59:01,759 INFO L138 Inliner]: procedures = 229, calls = 30, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 99 [2023-11-19 04:59:01,759 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 04:59:01,760 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 04:59:01,760 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 04:59:01,760 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 04:59:01,770 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:59:01" (1/1) ... [2023-11-19 04:59:01,770 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:59:01" (1/1) ... [2023-11-19 04:59:01,776 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:59:01" (1/1) ... [2023-11-19 04:59:01,776 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:59:01" (1/1) ... [2023-11-19 04:59:01,788 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:59:01" (1/1) ... [2023-11-19 04:59:01,792 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:59:01" (1/1) ... [2023-11-19 04:59:01,795 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:59:01" (1/1) ... [2023-11-19 04:59:01,797 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:59:01" (1/1) ... [2023-11-19 04:59:01,801 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 04:59:01,816 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 04:59:01,817 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 04:59:01,817 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 04:59:01,818 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:59:01" (1/1) ... [2023-11-19 04:59:01,825 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 04:59:01,837 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b80ca085-b4db-49ba-8982-645a291f58f9/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 04:59:01,853 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b80ca085-b4db-49ba-8982-645a291f58f9/bin/utaipan-verify-t7M7D8N6sZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 04:59:01,869 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b80ca085-b4db-49ba-8982-645a291f58f9/bin/utaipan-verify-t7M7D8N6sZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 04:59:01,889 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2023-11-19 04:59:01,889 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-19 04:59:01,889 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2023-11-19 04:59:01,890 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-19 04:59:01,890 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2023-11-19 04:59:01,890 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-19 04:59:01,890 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 04:59:01,890 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-19 04:59:01,890 INFO L130 BoogieDeclarations]: Found specification of procedure insert_list [2023-11-19 04:59:01,890 INFO L138 BoogieDeclarations]: Found implementation of procedure insert_list [2023-11-19 04:59:01,891 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 04:59:01,891 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 04:59:02,114 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 04:59:02,117 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 04:59:02,573 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 04:59:02,591 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 04:59:02,591 INFO L302 CfgBuilder]: Removed 4 assume(true) statements. [2023-11-19 04:59:02,597 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 04:59:02 BoogieIcfgContainer [2023-11-19 04:59:02,598 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 04:59:02,601 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 04:59:02,602 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 04:59:02,606 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 04:59:02,607 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 04:59:01" (1/3) ... [2023-11-19 04:59:02,608 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5d2a1db2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 04:59:02, skipping insertion in model container [2023-11-19 04:59:02,608 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:59:01" (2/3) ... [2023-11-19 04:59:02,610 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5d2a1db2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 04:59:02, skipping insertion in model container [2023-11-19 04:59:02,611 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 04:59:02" (3/3) ... [2023-11-19 04:59:02,613 INFO L112 eAbstractionObserver]: Analyzing ICFG list_search-2.i [2023-11-19 04:59:02,634 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 04:59:02,635 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-11-19 04:59:02,699 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 04:59:02,706 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;@4be60cf4, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-19 04:59:02,706 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-11-19 04:59:02,711 INFO L276 IsEmpty]: Start isEmpty. Operand has 40 states, 32 states have (on average 1.46875) internal successors, (47), 34 states have internal predecessors, (47), 4 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2023-11-19 04:59:02,723 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2023-11-19 04:59:02,724 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:59:02,725 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 04:59:02,726 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK] === [2023-11-19 04:59:02,733 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:59:02,734 INFO L85 PathProgramCache]: Analyzing trace with hash -435527478, now seen corresponding path program 1 times [2023-11-19 04:59:02,756 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-19 04:59:02,757 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [166229304] [2023-11-19 04:59:02,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:59:02,758 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-19 04:59:02,758 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b80ca085-b4db-49ba-8982-645a291f58f9/bin/utaipan-verify-t7M7D8N6sZ/mathsat [2023-11-19 04:59:02,764 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b80ca085-b4db-49ba-8982-645a291f58f9/bin/utaipan-verify-t7M7D8N6sZ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-19 04:59:02,795 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b80ca085-b4db-49ba-8982-645a291f58f9/bin/utaipan-verify-t7M7D8N6sZ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2023-11-19 04:59:03,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:59:03,147 INFO L262 TraceCheckSpWp]: Trace formula consists of 273 conjuncts, 1 conjunts are in the unsatisfiable core [2023-11-19 04:59:03,158 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 04:59:03,221 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-11-19 04:59:03,221 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 04:59:03,222 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-19 04:59:03,222 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [166229304] [2023-11-19 04:59:03,223 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [166229304] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 04:59:03,223 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 04:59:03,223 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 04:59:03,225 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1575699346] [2023-11-19 04:59:03,226 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 04:59:03,230 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-19 04:59:03,230 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-19 04:59:03,259 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-19 04:59:03,259 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-19 04:59:03,262 INFO L87 Difference]: Start difference. First operand has 40 states, 32 states have (on average 1.46875) internal successors, (47), 34 states have internal predecessors, (47), 4 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Second operand has 2 states, 2 states have (on average 9.5) internal successors, (19), 2 states have internal predecessors, (19), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2023-11-19 04:59:03,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 04:59:03,279 INFO L93 Difference]: Finished difference Result 39 states and 48 transitions. [2023-11-19 04:59:03,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-19 04:59:03,281 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 9.5) internal successors, (19), 2 states have internal predecessors, (19), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 39 [2023-11-19 04:59:03,282 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 04:59:03,289 INFO L225 Difference]: With dead ends: 39 [2023-11-19 04:59:03,289 INFO L226 Difference]: Without dead ends: 37 [2023-11-19 04:59:03,291 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 38 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 04:59:03,295 INFO L413 NwaCegarLoop]: 48 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, 48 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 04:59:03,296 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 04:59:03,314 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2023-11-19 04:59:03,331 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2023-11-19 04:59:03,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 30 states have (on average 1.2666666666666666) internal successors, (38), 31 states have internal predecessors, (38), 4 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2023-11-19 04:59:03,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 46 transitions. [2023-11-19 04:59:03,335 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 46 transitions. Word has length 39 [2023-11-19 04:59:03,337 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 04:59:03,337 INFO L495 AbstractCegarLoop]: Abstraction has 37 states and 46 transitions. [2023-11-19 04:59:03,338 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 9.5) internal successors, (19), 2 states have internal predecessors, (19), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2023-11-19 04:59:03,338 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 46 transitions. [2023-11-19 04:59:03,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2023-11-19 04:59:03,340 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:59:03,340 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 04:59:03,362 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b80ca085-b4db-49ba-8982-645a291f58f9/bin/utaipan-verify-t7M7D8N6sZ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2023-11-19 04:59:03,545 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b80ca085-b4db-49ba-8982-645a291f58f9/bin/utaipan-verify-t7M7D8N6sZ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-19 04:59:03,545 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK] === [2023-11-19 04:59:03,546 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:59:03,546 INFO L85 PathProgramCache]: Analyzing trace with hash 1995034883, now seen corresponding path program 1 times [2023-11-19 04:59:03,547 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-19 04:59:03,547 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [540787342] [2023-11-19 04:59:03,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:59:03,547 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-19 04:59:03,548 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b80ca085-b4db-49ba-8982-645a291f58f9/bin/utaipan-verify-t7M7D8N6sZ/mathsat [2023-11-19 04:59:03,549 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b80ca085-b4db-49ba-8982-645a291f58f9/bin/utaipan-verify-t7M7D8N6sZ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-19 04:59:03,575 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b80ca085-b4db-49ba-8982-645a291f58f9/bin/utaipan-verify-t7M7D8N6sZ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2023-11-19 04:59:03,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:59:03,809 INFO L262 TraceCheckSpWp]: Trace formula consists of 277 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-19 04:59:03,814 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 04:59:03,924 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 21 proven. 4 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-19 04:59:03,925 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 04:59:04,033 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 1 proven. 22 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-11-19 04:59:04,033 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-19 04:59:04,033 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [540787342] [2023-11-19 04:59:04,034 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [540787342] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 04:59:04,034 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [264462857] [2023-11-19 04:59:04,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:59:04,035 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-11-19 04:59:04,035 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b80ca085-b4db-49ba-8982-645a291f58f9/bin/utaipan-verify-t7M7D8N6sZ/cvc4 [2023-11-19 04:59:04,040 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b80ca085-b4db-49ba-8982-645a291f58f9/bin/utaipan-verify-t7M7D8N6sZ/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-11-19 04:59:04,068 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b80ca085-b4db-49ba-8982-645a291f58f9/bin/utaipan-verify-t7M7D8N6sZ/cvc4 --incremental --print-success --lang smt (4)] Waiting until timeout for monitored process [2023-11-19 04:59:04,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:59:04,343 INFO L262 TraceCheckSpWp]: Trace formula consists of 277 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-19 04:59:04,347 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 04:59:04,387 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 21 proven. 4 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-19 04:59:04,387 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 04:59:04,466 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 1 proven. 22 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-11-19 04:59:04,467 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [264462857] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 04:59:04,467 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [990282633] [2023-11-19 04:59:04,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:59:04,467 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 04:59:04,468 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b80ca085-b4db-49ba-8982-645a291f58f9/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 04:59:04,472 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b80ca085-b4db-49ba-8982-645a291f58f9/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 04:59:04,509 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b80ca085-b4db-49ba-8982-645a291f58f9/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-19 04:59:04,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:59:04,681 INFO L262 TraceCheckSpWp]: Trace formula consists of 277 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-19 04:59:04,690 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 04:59:04,751 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 21 proven. 4 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-19 04:59:04,751 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 04:59:04,843 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 1 proven. 22 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-11-19 04:59:04,843 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [990282633] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 04:59:04,844 INFO L185 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2023-11-19 04:59:04,844 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6, 6, 6, 6] total 7 [2023-11-19 04:59:04,845 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1726093907] [2023-11-19 04:59:04,845 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2023-11-19 04:59:04,847 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-19 04:59:04,847 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-19 04:59:04,848 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-19 04:59:04,849 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-11-19 04:59:04,849 INFO L87 Difference]: Start difference. First operand 37 states and 46 transitions. Second operand has 7 states, 7 states have (on average 5.0) internal successors, (35), 7 states have internal predecessors, (35), 3 states have call successors, (7), 4 states have call predecessors, (7), 4 states have return successors, (6), 2 states have call predecessors, (6), 3 states have call successors, (6) [2023-11-19 04:59:05,195 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 04:59:05,195 INFO L93 Difference]: Finished difference Result 49 states and 58 transitions. [2023-11-19 04:59:05,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-19 04:59:05,197 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.0) internal successors, (35), 7 states have internal predecessors, (35), 3 states have call successors, (7), 4 states have call predecessors, (7), 4 states have return successors, (6), 2 states have call predecessors, (6), 3 states have call successors, (6) Word has length 41 [2023-11-19 04:59:05,198 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 04:59:05,200 INFO L225 Difference]: With dead ends: 49 [2023-11-19 04:59:05,200 INFO L226 Difference]: Without dead ends: 49 [2023-11-19 04:59:05,201 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 248 GetRequests, 237 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=52, Invalid=104, Unknown=0, NotChecked=0, Total=156 [2023-11-19 04:59:05,202 INFO L413 NwaCegarLoop]: 44 mSDtfsCounter, 70 mSDsluCounter, 121 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 70 SdHoareTripleChecker+Valid, 165 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-19 04:59:05,203 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [70 Valid, 165 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-19 04:59:05,204 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2023-11-19 04:59:05,210 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 42. [2023-11-19 04:59:05,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 34 states have (on average 1.2352941176470589) internal successors, (42), 35 states have internal predecessors, (42), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) [2023-11-19 04:59:05,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 51 transitions. [2023-11-19 04:59:05,214 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 51 transitions. Word has length 41 [2023-11-19 04:59:05,215 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 04:59:05,215 INFO L495 AbstractCegarLoop]: Abstraction has 42 states and 51 transitions. [2023-11-19 04:59:05,215 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.0) internal successors, (35), 7 states have internal predecessors, (35), 3 states have call successors, (7), 4 states have call predecessors, (7), 4 states have return successors, (6), 2 states have call predecessors, (6), 3 states have call successors, (6) [2023-11-19 04:59:05,217 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 51 transitions. [2023-11-19 04:59:05,218 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2023-11-19 04:59:05,219 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:59:05,219 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 04:59:05,249 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b80ca085-b4db-49ba-8982-645a291f58f9/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-19 04:59:05,447 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b80ca085-b4db-49ba-8982-645a291f58f9/bin/utaipan-verify-t7M7D8N6sZ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2023-11-19 04:59:05,647 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b80ca085-b4db-49ba-8982-645a291f58f9/bin/utaipan-verify-t7M7D8N6sZ/cvc4 --incremental --print-success --lang smt (4)] Forceful destruction successful, exit code 0 [2023-11-19 04:59:05,844 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b80ca085-b4db-49ba-8982-645a291f58f9/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b80ca085-b4db-49ba-8982-645a291f58f9/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 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b80ca085-b4db-49ba-8982-645a291f58f9/bin/utaipan-verify-t7M7D8N6sZ/cvc4 --incremental --print-success --lang smt [2023-11-19 04:59:05,845 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK] === [2023-11-19 04:59:05,845 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:59:05,845 INFO L85 PathProgramCache]: Analyzing trace with hash -808839551, now seen corresponding path program 1 times [2023-11-19 04:59:05,846 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-19 04:59:05,846 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [210982093] [2023-11-19 04:59:05,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:59:05,847 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-19 04:59:05,847 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b80ca085-b4db-49ba-8982-645a291f58f9/bin/utaipan-verify-t7M7D8N6sZ/mathsat [2023-11-19 04:59:05,848 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b80ca085-b4db-49ba-8982-645a291f58f9/bin/utaipan-verify-t7M7D8N6sZ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-19 04:59:05,852 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b80ca085-b4db-49ba-8982-645a291f58f9/bin/utaipan-verify-t7M7D8N6sZ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2023-11-19 04:59:06,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:59:06,055 INFO L262 TraceCheckSpWp]: Trace formula consists of 274 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-19 04:59:06,057 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 04:59:06,098 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-11-19 04:59:06,099 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 04:59:06,099 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-19 04:59:06,099 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [210982093] [2023-11-19 04:59:06,100 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [210982093] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 04:59:06,100 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 04:59:06,100 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-19 04:59:06,100 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1729921098] [2023-11-19 04:59:06,100 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 04:59:06,101 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-19 04:59:06,101 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-19 04:59:06,102 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-19 04:59:06,102 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-19 04:59:06,102 INFO L87 Difference]: Start difference. First operand 42 states and 51 transitions. Second operand has 5 states, 5 states have (on average 5.2) internal successors, (26), 5 states have internal predecessors, (26), 1 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2023-11-19 04:59:06,393 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 04:59:06,393 INFO L93 Difference]: Finished difference Result 51 states and 60 transitions. [2023-11-19 04:59:06,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-19 04:59:06,399 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.2) internal successors, (26), 5 states have internal predecessors, (26), 1 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) Word has length 41 [2023-11-19 04:59:06,399 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 04:59:06,400 INFO L225 Difference]: With dead ends: 51 [2023-11-19 04:59:06,400 INFO L226 Difference]: Without dead ends: 51 [2023-11-19 04:59:06,400 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-11-19 04:59:06,402 INFO L413 NwaCegarLoop]: 42 mSDtfsCounter, 40 mSDsluCounter, 83 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 125 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-19 04:59:06,402 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [40 Valid, 125 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-19 04:59:06,403 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2023-11-19 04:59:06,407 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 46. [2023-11-19 04:59:06,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 38 states have (on average 1.2105263157894737) internal successors, (46), 39 states have internal predecessors, (46), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) [2023-11-19 04:59:06,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 55 transitions. [2023-11-19 04:59:06,409 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 55 transitions. Word has length 41 [2023-11-19 04:59:06,410 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 04:59:06,410 INFO L495 AbstractCegarLoop]: Abstraction has 46 states and 55 transitions. [2023-11-19 04:59:06,410 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.2) internal successors, (26), 5 states have internal predecessors, (26), 1 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2023-11-19 04:59:06,410 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 55 transitions. [2023-11-19 04:59:06,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2023-11-19 04:59:06,412 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:59:06,412 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 04:59:06,422 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b80ca085-b4db-49ba-8982-645a291f58f9/bin/utaipan-verify-t7M7D8N6sZ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2023-11-19 04:59:06,616 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b80ca085-b4db-49ba-8982-645a291f58f9/bin/utaipan-verify-t7M7D8N6sZ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-19 04:59:06,616 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK] === [2023-11-19 04:59:06,617 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:59:06,617 INFO L85 PathProgramCache]: Analyzing trace with hash -1996362409, now seen corresponding path program 1 times [2023-11-19 04:59:06,618 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-19 04:59:06,618 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1018517172] [2023-11-19 04:59:06,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:59:06,618 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-19 04:59:06,618 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b80ca085-b4db-49ba-8982-645a291f58f9/bin/utaipan-verify-t7M7D8N6sZ/mathsat [2023-11-19 04:59:06,622 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b80ca085-b4db-49ba-8982-645a291f58f9/bin/utaipan-verify-t7M7D8N6sZ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-19 04:59:06,626 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b80ca085-b4db-49ba-8982-645a291f58f9/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 04:59:06,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:59:06,937 INFO L262 TraceCheckSpWp]: Trace formula consists of 277 conjuncts, 15 conjunts are in the unsatisfiable core [2023-11-19 04:59:06,943 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 04:59:07,060 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 11 treesize of output 7 [2023-11-19 04:59:07,212 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 8 [2023-11-19 04:59:07,236 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 19 proven. 5 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-11-19 04:59:07,237 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 04:59:07,665 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 19 proven. 5 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-11-19 04:59:07,665 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-19 04:59:07,665 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1018517172] [2023-11-19 04:59:07,666 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1018517172] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 04:59:07,666 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [242794388] [2023-11-19 04:59:07,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:59:07,666 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-11-19 04:59:07,667 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b80ca085-b4db-49ba-8982-645a291f58f9/bin/utaipan-verify-t7M7D8N6sZ/cvc4 [2023-11-19 04:59:07,674 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b80ca085-b4db-49ba-8982-645a291f58f9/bin/utaipan-verify-t7M7D8N6sZ/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-11-19 04:59:07,692 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b80ca085-b4db-49ba-8982-645a291f58f9/bin/utaipan-verify-t7M7D8N6sZ/cvc4 --incremental --print-success --lang smt (8)] Waiting until timeout for monitored process [2023-11-19 04:59:08,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:59:08,120 INFO L262 TraceCheckSpWp]: Trace formula consists of 277 conjuncts, 14 conjunts are in the unsatisfiable core [2023-11-19 04:59:08,124 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 04:59:08,159 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 11 treesize of output 7 [2023-11-19 04:59:08,208 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 8 [2023-11-19 04:59:08,213 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 19 proven. 5 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-11-19 04:59:08,214 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 04:59:08,416 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 19 proven. 5 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-11-19 04:59:08,417 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [242794388] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 04:59:08,417 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1355457339] [2023-11-19 04:59:08,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:59:08,417 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 04:59:08,418 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b80ca085-b4db-49ba-8982-645a291f58f9/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 04:59:08,419 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b80ca085-b4db-49ba-8982-645a291f58f9/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 04:59:08,440 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b80ca085-b4db-49ba-8982-645a291f58f9/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-19 04:59:08,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:59:08,667 INFO L262 TraceCheckSpWp]: Trace formula consists of 277 conjuncts, 13 conjunts are in the unsatisfiable core [2023-11-19 04:59:08,671 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 04:59:08,712 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 11 treesize of output 7 [2023-11-19 04:59:08,759 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 8 [2023-11-19 04:59:08,762 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 19 proven. 5 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-11-19 04:59:08,762 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 04:59:08,959 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 19 proven. 5 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-11-19 04:59:08,959 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1355457339] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 04:59:08,959 INFO L185 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2023-11-19 04:59:08,960 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10, 11, 10, 11, 10] total 16 [2023-11-19 04:59:08,960 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2141954315] [2023-11-19 04:59:08,960 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2023-11-19 04:59:08,961 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-11-19 04:59:08,961 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-19 04:59:08,962 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-11-19 04:59:08,963 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=201, Unknown=0, NotChecked=0, Total=240 [2023-11-19 04:59:08,963 INFO L87 Difference]: Start difference. First operand 46 states and 55 transitions. Second operand has 16 states, 16 states have (on average 2.3125) internal successors, (37), 13 states have internal predecessors, (37), 2 states have call successors, (5), 3 states have call predecessors, (5), 4 states have return successors, (5), 4 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-19 04:59:11,000 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 04:59:11,000 INFO L93 Difference]: Finished difference Result 54 states and 62 transitions. [2023-11-19 04:59:11,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-11-19 04:59:11,001 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.3125) internal successors, (37), 13 states have internal predecessors, (37), 2 states have call successors, (5), 3 states have call predecessors, (5), 4 states have return successors, (5), 4 states have call predecessors, (5), 2 states have call successors, (5) Word has length 42 [2023-11-19 04:59:11,001 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 04:59:11,002 INFO L225 Difference]: With dead ends: 54 [2023-11-19 04:59:11,002 INFO L226 Difference]: Without dead ends: 54 [2023-11-19 04:59:11,003 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 263 GetRequests, 234 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 105 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=195, Invalid=735, Unknown=0, NotChecked=0, Total=930 [2023-11-19 04:59:11,004 INFO L413 NwaCegarLoop]: 32 mSDtfsCounter, 106 mSDsluCounter, 223 mSDsCounter, 0 mSdLazyCounter, 247 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 106 SdHoareTripleChecker+Valid, 255 SdHoareTripleChecker+Invalid, 275 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 247 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2023-11-19 04:59:11,005 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [106 Valid, 255 Invalid, 275 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 247 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-11-19 04:59:11,006 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2023-11-19 04:59:11,010 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 45. [2023-11-19 04:59:11,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45 states, 37 states have (on average 1.2162162162162162) internal successors, (45), 38 states have internal predecessors, (45), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2023-11-19 04:59:11,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 53 transitions. [2023-11-19 04:59:11,012 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 53 transitions. Word has length 42 [2023-11-19 04:59:11,013 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 04:59:11,013 INFO L495 AbstractCegarLoop]: Abstraction has 45 states and 53 transitions. [2023-11-19 04:59:11,013 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.3125) internal successors, (37), 13 states have internal predecessors, (37), 2 states have call successors, (5), 3 states have call predecessors, (5), 4 states have return successors, (5), 4 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-19 04:59:11,013 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 53 transitions. [2023-11-19 04:59:11,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2023-11-19 04:59:11,015 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:59:11,015 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 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] [2023-11-19 04:59:11,028 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b80ca085-b4db-49ba-8982-645a291f58f9/bin/utaipan-verify-t7M7D8N6sZ/cvc4 --incremental --print-success --lang smt (8)] Forceful destruction successful, exit code 0 [2023-11-19 04:59:11,222 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b80ca085-b4db-49ba-8982-645a291f58f9/bin/utaipan-verify-t7M7D8N6sZ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2023-11-19 04:59:11,433 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b80ca085-b4db-49ba-8982-645a291f58f9/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2023-11-19 04:59:11,619 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b80ca085-b4db-49ba-8982-645a291f58f9/bin/utaipan-verify-t7M7D8N6sZ/cvc4 --incremental --print-success --lang smt,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b80ca085-b4db-49ba-8982-645a291f58f9/bin/utaipan-verify-t7M7D8N6sZ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b80ca085-b4db-49ba-8982-645a291f58f9/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 04:59:11,620 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK] === [2023-11-19 04:59:11,620 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:59:11,620 INFO L85 PathProgramCache]: Analyzing trace with hash -154865343, now seen corresponding path program 2 times [2023-11-19 04:59:11,620 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-19 04:59:11,621 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [771314789] [2023-11-19 04:59:11,621 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-19 04:59:11,621 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-19 04:59:11,621 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b80ca085-b4db-49ba-8982-645a291f58f9/bin/utaipan-verify-t7M7D8N6sZ/mathsat [2023-11-19 04:59:11,622 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b80ca085-b4db-49ba-8982-645a291f58f9/bin/utaipan-verify-t7M7D8N6sZ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-19 04:59:11,625 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b80ca085-b4db-49ba-8982-645a291f58f9/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 04:59:11,792 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-19 04:59:11,793 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-19 04:59:11,797 INFO L262 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 13 conjunts are in the unsatisfiable core [2023-11-19 04:59:11,799 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 04:59:11,979 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2023-11-19 04:59:11,980 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 04:59:11,980 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-19 04:59:11,980 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [771314789] [2023-11-19 04:59:11,980 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [771314789] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 04:59:11,980 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 04:59:11,981 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-19 04:59:11,981 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1449705541] [2023-11-19 04:59:11,981 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 04:59:11,981 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-19 04:59:11,982 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-19 04:59:11,982 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-19 04:59:11,983 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-19 04:59:11,983 INFO L87 Difference]: Start difference. First operand 45 states and 53 transitions. Second operand has 7 states, 7 states have (on average 3.2857142857142856) internal successors, (23), 7 states have internal predecessors, (23), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2023-11-19 04:59:12,427 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 04:59:12,427 INFO L93 Difference]: Finished difference Result 54 states and 65 transitions. [2023-11-19 04:59:12,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-19 04:59:12,429 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.2857142857142856) internal successors, (23), 7 states have internal predecessors, (23), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 43 [2023-11-19 04:59:12,430 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 04:59:12,430 INFO L225 Difference]: With dead ends: 54 [2023-11-19 04:59:12,430 INFO L226 Difference]: Without dead ends: 54 [2023-11-19 04:59:12,431 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2023-11-19 04:59:12,432 INFO L413 NwaCegarLoop]: 39 mSDtfsCounter, 18 mSDsluCounter, 177 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 216 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-19 04:59:12,432 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 216 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-19 04:59:12,433 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2023-11-19 04:59:12,438 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 49. [2023-11-19 04:59:12,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49 states, 41 states have (on average 1.2195121951219512) internal successors, (50), 42 states have internal predecessors, (50), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2023-11-19 04:59:12,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 58 transitions. [2023-11-19 04:59:12,440 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 58 transitions. Word has length 43 [2023-11-19 04:59:12,440 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 04:59:12,440 INFO L495 AbstractCegarLoop]: Abstraction has 49 states and 58 transitions. [2023-11-19 04:59:12,441 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.2857142857142856) internal successors, (23), 7 states have internal predecessors, (23), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2023-11-19 04:59:12,441 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 58 transitions. [2023-11-19 04:59:12,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2023-11-19 04:59:12,442 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:59:12,442 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 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] [2023-11-19 04:59:12,451 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b80ca085-b4db-49ba-8982-645a291f58f9/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)] Forceful destruction successful, exit code 0 [2023-11-19 04:59:12,645 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b80ca085-b4db-49ba-8982-645a291f58f9/bin/utaipan-verify-t7M7D8N6sZ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-19 04:59:12,646 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK] === [2023-11-19 04:59:12,646 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:59:12,646 INFO L85 PathProgramCache]: Analyzing trace with hash -964211969, now seen corresponding path program 1 times [2023-11-19 04:59:12,647 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-19 04:59:12,647 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [455841158] [2023-11-19 04:59:12,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:59:12,647 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-19 04:59:12,647 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b80ca085-b4db-49ba-8982-645a291f58f9/bin/utaipan-verify-t7M7D8N6sZ/mathsat [2023-11-19 04:59:12,648 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b80ca085-b4db-49ba-8982-645a291f58f9/bin/utaipan-verify-t7M7D8N6sZ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-19 04:59:12,649 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b80ca085-b4db-49ba-8982-645a291f58f9/bin/utaipan-verify-t7M7D8N6sZ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2023-11-19 04:59:12,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:59:12,889 INFO L262 TraceCheckSpWp]: Trace formula consists of 278 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-19 04:59:12,891 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 04:59:12,942 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2023-11-19 04:59:12,943 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 04:59:12,943 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-19 04:59:12,943 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [455841158] [2023-11-19 04:59:12,943 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [455841158] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 04:59:12,943 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 04:59:12,943 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-19 04:59:12,943 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [803433797] [2023-11-19 04:59:12,944 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 04:59:12,944 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-19 04:59:12,944 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-19 04:59:12,945 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-19 04:59:12,945 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-19 04:59:12,945 INFO L87 Difference]: Start difference. First operand 49 states and 58 transitions. Second operand has 6 states, 6 states have (on average 4.5) internal successors, (27), 6 states have internal predecessors, (27), 1 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2023-11-19 04:59:13,442 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 04:59:13,442 INFO L93 Difference]: Finished difference Result 61 states and 71 transitions. [2023-11-19 04:59:13,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-19 04:59:13,443 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.5) internal successors, (27), 6 states have internal predecessors, (27), 1 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) Word has length 43 [2023-11-19 04:59:13,444 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 04:59:13,444 INFO L225 Difference]: With dead ends: 61 [2023-11-19 04:59:13,445 INFO L226 Difference]: Without dead ends: 61 [2023-11-19 04:59:13,445 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2023-11-19 04:59:13,446 INFO L413 NwaCegarLoop]: 40 mSDtfsCounter, 45 mSDsluCounter, 121 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 161 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-19 04:59:13,446 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [45 Valid, 161 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 63 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-19 04:59:13,447 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2023-11-19 04:59:13,452 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 51. [2023-11-19 04:59:13,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 43 states have (on average 1.2093023255813953) internal successors, (52), 44 states have internal predecessors, (52), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2023-11-19 04:59:13,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 60 transitions. [2023-11-19 04:59:13,454 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 60 transitions. Word has length 43 [2023-11-19 04:59:13,454 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 04:59:13,454 INFO L495 AbstractCegarLoop]: Abstraction has 51 states and 60 transitions. [2023-11-19 04:59:13,455 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.5) internal successors, (27), 6 states have internal predecessors, (27), 1 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2023-11-19 04:59:13,455 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 60 transitions. [2023-11-19 04:59:13,456 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2023-11-19 04:59:13,456 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:59:13,456 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 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] [2023-11-19 04:59:13,473 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b80ca085-b4db-49ba-8982-645a291f58f9/bin/utaipan-verify-t7M7D8N6sZ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2023-11-19 04:59:13,661 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b80ca085-b4db-49ba-8982-645a291f58f9/bin/utaipan-verify-t7M7D8N6sZ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-19 04:59:13,661 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK] === [2023-11-19 04:59:13,662 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:59:13,662 INFO L85 PathProgramCache]: Analyzing trace with hash -670883536, now seen corresponding path program 1 times [2023-11-19 04:59:13,663 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-19 04:59:13,663 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [423617859] [2023-11-19 04:59:13,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:59:13,663 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-19 04:59:13,663 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b80ca085-b4db-49ba-8982-645a291f58f9/bin/utaipan-verify-t7M7D8N6sZ/mathsat [2023-11-19 04:59:13,666 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b80ca085-b4db-49ba-8982-645a291f58f9/bin/utaipan-verify-t7M7D8N6sZ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-19 04:59:13,670 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b80ca085-b4db-49ba-8982-645a291f58f9/bin/utaipan-verify-t7M7D8N6sZ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2023-11-19 04:59:13,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:59:13,962 INFO L262 TraceCheckSpWp]: Trace formula consists of 285 conjuncts, 17 conjunts are in the unsatisfiable core [2023-11-19 04:59:13,965 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 04:59:14,037 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 11 treesize of output 7 [2023-11-19 04:59:14,234 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 8 [2023-11-19 04:59:14,278 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 19 proven. 7 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-11-19 04:59:14,278 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 04:59:14,722 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 19 proven. 7 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-11-19 04:59:14,722 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-19 04:59:14,723 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [423617859] [2023-11-19 04:59:14,723 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [423617859] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 04:59:14,723 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1900595254] [2023-11-19 04:59:14,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:59:14,723 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-11-19 04:59:14,723 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b80ca085-b4db-49ba-8982-645a291f58f9/bin/utaipan-verify-t7M7D8N6sZ/cvc4 [2023-11-19 04:59:14,726 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b80ca085-b4db-49ba-8982-645a291f58f9/bin/utaipan-verify-t7M7D8N6sZ/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-11-19 04:59:14,764 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b80ca085-b4db-49ba-8982-645a291f58f9/bin/utaipan-verify-t7M7D8N6sZ/cvc4 --incremental --print-success --lang smt (13)] Waiting until timeout for monitored process [2023-11-19 04:59:15,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:59:15,163 INFO L262 TraceCheckSpWp]: Trace formula consists of 285 conjuncts, 16 conjunts are in the unsatisfiable core [2023-11-19 04:59:15,166 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 04:59:15,200 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 11 treesize of output 7 [2023-11-19 04:59:15,293 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 8 [2023-11-19 04:59:15,301 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 19 proven. 7 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-11-19 04:59:15,301 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 04:59:15,566 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 19 proven. 7 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-11-19 04:59:15,566 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1900595254] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 04:59:15,566 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [568774078] [2023-11-19 04:59:15,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:59:15,567 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 04:59:15,567 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b80ca085-b4db-49ba-8982-645a291f58f9/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 04:59:15,568 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b80ca085-b4db-49ba-8982-645a291f58f9/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 04:59:15,569 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b80ca085-b4db-49ba-8982-645a291f58f9/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-11-19 04:59:15,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:59:15,805 INFO L262 TraceCheckSpWp]: Trace formula consists of 285 conjuncts, 14 conjunts are in the unsatisfiable core [2023-11-19 04:59:15,808 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 04:59:15,858 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 11 treesize of output 7 [2023-11-19 04:59:15,945 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 8 [2023-11-19 04:59:15,951 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 20 proven. 6 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-11-19 04:59:15,952 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 04:59:16,157 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 20 proven. 6 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-11-19 04:59:16,157 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [568774078] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 04:59:16,157 INFO L185 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2023-11-19 04:59:16,158 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11, 12, 11, 12, 11] total 17 [2023-11-19 04:59:16,158 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [518723934] [2023-11-19 04:59:16,158 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2023-11-19 04:59:16,159 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-11-19 04:59:16,159 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-19 04:59:16,160 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-11-19 04:59:16,160 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=231, Unknown=0, NotChecked=0, Total=272 [2023-11-19 04:59:16,160 INFO L87 Difference]: Start difference. First operand 51 states and 60 transitions. Second operand has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 16 states have internal predecessors, (47), 2 states have call successors, (5), 3 states have call predecessors, (5), 4 states have return successors, (5), 4 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-19 04:59:18,366 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 04:59:18,366 INFO L93 Difference]: Finished difference Result 64 states and 75 transitions. [2023-11-19 04:59:18,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-11-19 04:59:18,373 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 16 states have internal predecessors, (47), 2 states have call successors, (5), 3 states have call predecessors, (5), 4 states have return successors, (5), 4 states have call predecessors, (5), 2 states have call successors, (5) Word has length 46 [2023-11-19 04:59:18,374 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 04:59:18,378 INFO L225 Difference]: With dead ends: 64 [2023-11-19 04:59:18,378 INFO L226 Difference]: Without dead ends: 64 [2023-11-19 04:59:18,378 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 288 GetRequests, 257 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 119 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=216, Invalid=840, Unknown=0, NotChecked=0, Total=1056 [2023-11-19 04:59:18,379 INFO L413 NwaCegarLoop]: 30 mSDtfsCounter, 102 mSDsluCounter, 214 mSDsCounter, 0 mSdLazyCounter, 264 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 102 SdHoareTripleChecker+Valid, 244 SdHoareTripleChecker+Invalid, 283 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 264 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2023-11-19 04:59:18,380 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [102 Valid, 244 Invalid, 283 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 264 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2023-11-19 04:59:18,380 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2023-11-19 04:59:18,385 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 54. [2023-11-19 04:59:18,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 46 states have (on average 1.2173913043478262) internal successors, (56), 47 states have internal predecessors, (56), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2023-11-19 04:59:18,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 64 transitions. [2023-11-19 04:59:18,387 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 64 transitions. Word has length 46 [2023-11-19 04:59:18,387 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 04:59:18,387 INFO L495 AbstractCegarLoop]: Abstraction has 54 states and 64 transitions. [2023-11-19 04:59:18,387 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 16 states have internal predecessors, (47), 2 states have call successors, (5), 3 states have call predecessors, (5), 4 states have return successors, (5), 4 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-19 04:59:18,388 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 64 transitions. [2023-11-19 04:59:18,389 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2023-11-19 04:59:18,389 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:59:18,389 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 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] [2023-11-19 04:59:18,406 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b80ca085-b4db-49ba-8982-645a291f58f9/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2023-11-19 04:59:18,600 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b80ca085-b4db-49ba-8982-645a291f58f9/bin/utaipan-verify-t7M7D8N6sZ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2023-11-19 04:59:18,800 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b80ca085-b4db-49ba-8982-645a291f58f9/bin/utaipan-verify-t7M7D8N6sZ/cvc4 --incremental --print-success --lang smt (13)] Forceful destruction successful, exit code 0 [2023-11-19 04:59:18,996 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b80ca085-b4db-49ba-8982-645a291f58f9/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b80ca085-b4db-49ba-8982-645a291f58f9/bin/utaipan-verify-t7M7D8N6sZ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b80ca085-b4db-49ba-8982-645a291f58f9/bin/utaipan-verify-t7M7D8N6sZ/cvc4 --incremental --print-success --lang smt [2023-11-19 04:59:18,997 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK] === [2023-11-19 04:59:18,997 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:59:18,997 INFO L85 PathProgramCache]: Analyzing trace with hash 1373258684, now seen corresponding path program 1 times [2023-11-19 04:59:18,998 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-19 04:59:18,998 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1440613858] [2023-11-19 04:59:18,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:59:18,998 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-19 04:59:18,998 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b80ca085-b4db-49ba-8982-645a291f58f9/bin/utaipan-verify-t7M7D8N6sZ/mathsat [2023-11-19 04:59:19,000 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b80ca085-b4db-49ba-8982-645a291f58f9/bin/utaipan-verify-t7M7D8N6sZ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-19 04:59:19,013 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b80ca085-b4db-49ba-8982-645a291f58f9/bin/utaipan-verify-t7M7D8N6sZ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2023-11-19 04:59:19,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:59:19,450 INFO L262 TraceCheckSpWp]: Trace formula consists of 308 conjuncts, 13 conjunts are in the unsatisfiable core [2023-11-19 04:59:19,453 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 04:59:19,480 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 46 treesize of output 29 [2023-11-19 04:59:19,817 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-19 04:59:19,818 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 63 treesize of output 35 [2023-11-19 04:59:19,846 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2023-11-19 04:59:19,846 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 04:59:19,846 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-19 04:59:19,846 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1440613858] [2023-11-19 04:59:19,846 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1440613858] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 04:59:19,846 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 04:59:19,847 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-19 04:59:19,847 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [81155929] [2023-11-19 04:59:19,847 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 04:59:19,848 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-19 04:59:19,848 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-19 04:59:19,848 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-19 04:59:19,849 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-11-19 04:59:19,849 INFO L87 Difference]: Start difference. First operand 54 states and 64 transitions. Second operand has 8 states, 8 states have (on average 4.0) internal successors, (32), 8 states have internal predecessors, (32), 1 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2023-11-19 04:59:20,637 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 04:59:20,637 INFO L93 Difference]: Finished difference Result 55 states and 64 transitions. [2023-11-19 04:59:20,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-19 04:59:20,639 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.0) internal successors, (32), 8 states have internal predecessors, (32), 1 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) Word has length 48 [2023-11-19 04:59:20,639 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 04:59:20,640 INFO L225 Difference]: With dead ends: 55 [2023-11-19 04:59:20,640 INFO L226 Difference]: Without dead ends: 55 [2023-11-19 04:59:20,641 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2023-11-19 04:59:20,641 INFO L413 NwaCegarLoop]: 30 mSDtfsCounter, 28 mSDsluCounter, 136 mSDsCounter, 0 mSdLazyCounter, 129 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 166 SdHoareTripleChecker+Invalid, 130 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 129 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-19 04:59:20,642 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 166 Invalid, 130 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 129 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-19 04:59:20,643 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2023-11-19 04:59:20,646 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 54. [2023-11-19 04:59:20,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 46 states have (on average 1.1956521739130435) internal successors, (55), 47 states have internal predecessors, (55), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2023-11-19 04:59:20,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 63 transitions. [2023-11-19 04:59:20,648 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 63 transitions. Word has length 48 [2023-11-19 04:59:20,649 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 04:59:20,649 INFO L495 AbstractCegarLoop]: Abstraction has 54 states and 63 transitions. [2023-11-19 04:59:20,649 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.0) internal successors, (32), 8 states have internal predecessors, (32), 1 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2023-11-19 04:59:20,649 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 63 transitions. [2023-11-19 04:59:20,650 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2023-11-19 04:59:20,650 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:59:20,650 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 04:59:20,663 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b80ca085-b4db-49ba-8982-645a291f58f9/bin/utaipan-verify-t7M7D8N6sZ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2023-11-19 04:59:20,857 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b80ca085-b4db-49ba-8982-645a291f58f9/bin/utaipan-verify-t7M7D8N6sZ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-19 04:59:20,858 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK] === [2023-11-19 04:59:20,858 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:59:20,858 INFO L85 PathProgramCache]: Analyzing trace with hash 1912983903, now seen corresponding path program 2 times [2023-11-19 04:59:20,859 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-19 04:59:20,859 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1287550687] [2023-11-19 04:59:20,859 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-19 04:59:20,859 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-19 04:59:20,859 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b80ca085-b4db-49ba-8982-645a291f58f9/bin/utaipan-verify-t7M7D8N6sZ/mathsat [2023-11-19 04:59:20,861 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b80ca085-b4db-49ba-8982-645a291f58f9/bin/utaipan-verify-t7M7D8N6sZ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-19 04:59:20,880 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b80ca085-b4db-49ba-8982-645a291f58f9/bin/utaipan-verify-t7M7D8N6sZ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2023-11-19 04:59:21,250 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-19 04:59:21,250 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-19 04:59:21,266 INFO L262 TraceCheckSpWp]: Trace formula consists of 292 conjuncts, 34 conjunts are in the unsatisfiable core [2023-11-19 04:59:21,269 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 04:59:21,327 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 6 treesize of output 7 [2023-11-19 04:59:21,356 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 11 treesize of output 7 [2023-11-19 04:59:21,658 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 12 [2023-11-19 04:59:21,680 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 11 treesize of output 7 [2023-11-19 04:59:21,874 INFO L349 Elim1Store]: treesize reduction 6, result has 57.1 percent of original size [2023-11-19 04:59:21,875 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 17 treesize of output 17 [2023-11-19 04:59:21,895 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 16 [2023-11-19 04:59:22,032 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2023-11-19 04:59:22,136 INFO L349 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2023-11-19 04:59:22,136 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 32 treesize of output 15 [2023-11-19 04:59:22,183 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 17 proven. 15 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-11-19 04:59:22,183 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 04:59:22,738 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-19 04:59:22,738 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 20 [2023-11-19 04:59:23,006 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-19 04:59:23,007 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1287550687] [2023-11-19 04:59:23,007 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1287550687] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 04:59:23,007 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [673562674] [2023-11-19 04:59:23,007 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-19 04:59:23,007 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-11-19 04:59:23,007 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b80ca085-b4db-49ba-8982-645a291f58f9/bin/utaipan-verify-t7M7D8N6sZ/cvc4 [2023-11-19 04:59:23,008 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b80ca085-b4db-49ba-8982-645a291f58f9/bin/utaipan-verify-t7M7D8N6sZ/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-11-19 04:59:23,010 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b80ca085-b4db-49ba-8982-645a291f58f9/bin/utaipan-verify-t7M7D8N6sZ/cvc4 --incremental --print-success --lang smt (17)] Waiting until timeout for monitored process [2023-11-19 04:59:23,572 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-19 04:59:23,572 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-19 04:59:23,579 INFO L262 TraceCheckSpWp]: Trace formula consists of 292 conjuncts, 38 conjunts are in the unsatisfiable core [2023-11-19 04:59:23,584 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 04:59:23,614 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 6 treesize of output 7 [2023-11-19 04:59:23,630 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 11 treesize of output 7 [2023-11-19 04:59:23,753 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 11 treesize of output 7 [2023-11-19 04:59:23,766 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 12 [2023-11-19 04:59:23,885 INFO L349 Elim1Store]: treesize reduction 6, result has 57.1 percent of original size [2023-11-19 04:59:23,886 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 17 treesize of output 17 [2023-11-19 04:59:23,899 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 16 [2023-11-19 04:59:24,036 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2023-11-19 04:59:24,210 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 17 proven. 15 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-11-19 04:59:24,211 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 04:59:24,545 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-19 04:59:24,546 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 20 [2023-11-19 04:59:24,564 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_~head~0.base_196 (_ BitVec 32)) (v_arrayElimArr_4 (Array (_ BitVec 32) (_ BitVec 32)))) (or (not (= (select v_arrayElimArr_4 (_ bv4 32)) c_~head~0.base)) (not (= (_ bv0 1) (select |c_#valid| v_~head~0.base_196))) (not (= (select (select (store |c_#memory_$Pointer$.base| v_~head~0.base_196 v_arrayElimArr_4) c_~head~0.base) (bvadd c_~head~0.offset (_ bv4 32))) (_ bv0 32))))) is different from false [2023-11-19 04:59:24,566 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [673562674] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 04:59:24,566 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [341106695] [2023-11-19 04:59:24,566 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-19 04:59:24,567 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 04:59:24,567 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b80ca085-b4db-49ba-8982-645a291f58f9/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 04:59:24,568 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b80ca085-b4db-49ba-8982-645a291f58f9/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 04:59:24,571 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b80ca085-b4db-49ba-8982-645a291f58f9/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2023-11-19 04:59:24,874 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-19 04:59:24,875 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-19 04:59:24,880 INFO L262 TraceCheckSpWp]: Trace formula consists of 292 conjuncts, 41 conjunts are in the unsatisfiable core [2023-11-19 04:59:24,884 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 04:59:24,906 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 6 treesize of output 7 [2023-11-19 04:59:24,923 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 11 treesize of output 7 [2023-11-19 04:59:25,054 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 12 [2023-11-19 04:59:25,072 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 11 treesize of output 7 [2023-11-19 04:59:25,151 INFO L349 Elim1Store]: treesize reduction 21, result has 44.7 percent of original size [2023-11-19 04:59:25,151 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 24 [2023-11-19 04:59:25,186 INFO L349 Elim1Store]: treesize reduction 6, result has 57.1 percent of original size [2023-11-19 04:59:25,187 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 17 treesize of output 17 [2023-11-19 04:59:25,404 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2023-11-19 04:59:25,543 INFO L349 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2023-11-19 04:59:25,544 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 32 treesize of output 15 [2023-11-19 04:59:25,653 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 19 proven. 21 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-19 04:59:25,653 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 04:59:26,260 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-19 04:59:26,260 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 20 [2023-11-19 04:59:26,293 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_~head~0.base_202 (_ BitVec 32)) (v_arrayElimArr_6 (Array (_ BitVec 32) (_ BitVec 32)))) (or (not (= (select (select (store |c_#memory_$Pointer$.base| v_~head~0.base_202 v_arrayElimArr_6) c_~head~0.base) (bvadd c_~head~0.offset (_ bv4 32))) (_ bv0 32))) (not (= (_ bv0 1) (select |c_#valid| v_~head~0.base_202))) (not (= c_~head~0.base (select v_arrayElimArr_6 (_ bv4 32)))))) is different from false [2023-11-19 04:59:26,296 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [341106695] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 04:59:26,296 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-19 04:59:26,296 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 19] total 24 [2023-11-19 04:59:26,297 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [619504242] [2023-11-19 04:59:26,297 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-19 04:59:26,297 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-11-19 04:59:26,297 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-19 04:59:26,298 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-11-19 04:59:26,299 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=791, Unknown=10, NotChecked=114, Total=992 [2023-11-19 04:59:26,299 INFO L87 Difference]: Start difference. First operand 54 states and 63 transitions. Second operand has 24 states, 24 states have (on average 2.2083333333333335) internal successors, (53), 22 states have internal predecessors, (53), 3 states have call successors, (4), 3 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) [2023-11-19 04:59:31,875 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 04:59:31,875 INFO L93 Difference]: Finished difference Result 69 states and 80 transitions. [2023-11-19 04:59:31,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2023-11-19 04:59:31,876 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 2.2083333333333335) internal successors, (53), 22 states have internal predecessors, (53), 3 states have call successors, (4), 3 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) Word has length 49 [2023-11-19 04:59:31,876 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 04:59:31,876 INFO L225 Difference]: With dead ends: 69 [2023-11-19 04:59:31,876 INFO L226 Difference]: Without dead ends: 69 [2023-11-19 04:59:31,878 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 231 GetRequests, 178 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 443 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=315, Invalid=2439, Unknown=10, NotChecked=206, Total=2970 [2023-11-19 04:59:31,879 INFO L413 NwaCegarLoop]: 28 mSDtfsCounter, 144 mSDsluCounter, 352 mSDsCounter, 0 mSdLazyCounter, 685 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 144 SdHoareTripleChecker+Valid, 380 SdHoareTripleChecker+Invalid, 709 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 685 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2023-11-19 04:59:31,879 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [144 Valid, 380 Invalid, 709 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 685 Invalid, 0 Unknown, 0 Unchecked, 3.6s Time] [2023-11-19 04:59:31,880 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2023-11-19 04:59:31,884 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 58. [2023-11-19 04:59:31,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58 states, 50 states have (on average 1.2) internal successors, (60), 51 states have internal predecessors, (60), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2023-11-19 04:59:31,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 68 transitions. [2023-11-19 04:59:31,885 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 68 transitions. Word has length 49 [2023-11-19 04:59:31,885 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 04:59:31,886 INFO L495 AbstractCegarLoop]: Abstraction has 58 states and 68 transitions. [2023-11-19 04:59:31,886 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 2.2083333333333335) internal successors, (53), 22 states have internal predecessors, (53), 3 states have call successors, (4), 3 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) [2023-11-19 04:59:31,886 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 68 transitions. [2023-11-19 04:59:31,887 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2023-11-19 04:59:31,887 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:59:31,887 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 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] [2023-11-19 04:59:31,905 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b80ca085-b4db-49ba-8982-645a291f58f9/bin/utaipan-verify-t7M7D8N6sZ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2023-11-19 04:59:32,097 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b80ca085-b4db-49ba-8982-645a291f58f9/bin/utaipan-verify-t7M7D8N6sZ/cvc4 --incremental --print-success --lang smt (17)] Forceful destruction successful, exit code 0 [2023-11-19 04:59:32,308 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b80ca085-b4db-49ba-8982-645a291f58f9/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2023-11-19 04:59:32,494 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b80ca085-b4db-49ba-8982-645a291f58f9/bin/utaipan-verify-t7M7D8N6sZ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b80ca085-b4db-49ba-8982-645a291f58f9/bin/utaipan-verify-t7M7D8N6sZ/cvc4 --incremental --print-success --lang smt,18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b80ca085-b4db-49ba-8982-645a291f58f9/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 04:59:32,494 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK] === [2023-11-19 04:59:32,495 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:59:32,495 INFO L85 PathProgramCache]: Analyzing trace with hash -83662975, now seen corresponding path program 1 times [2023-11-19 04:59:32,495 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-19 04:59:32,495 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1435935797] [2023-11-19 04:59:32,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:59:32,496 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-19 04:59:32,496 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b80ca085-b4db-49ba-8982-645a291f58f9/bin/utaipan-verify-t7M7D8N6sZ/mathsat [2023-11-19 04:59:32,497 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b80ca085-b4db-49ba-8982-645a291f58f9/bin/utaipan-verify-t7M7D8N6sZ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-19 04:59:32,517 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b80ca085-b4db-49ba-8982-645a291f58f9/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 (19)] Waiting until timeout for monitored process [2023-11-19 04:59:32,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:59:32,847 INFO L262 TraceCheckSpWp]: Trace formula consists of 318 conjuncts, 27 conjunts are in the unsatisfiable core [2023-11-19 04:59:32,851 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 04:59:32,902 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 11 treesize of output 7 [2023-11-19 04:59:33,134 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2023-11-19 04:59:33,226 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-19 04:59:33,227 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 6 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 84 treesize of output 68 [2023-11-19 04:59:33,512 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 23 proven. 3 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-11-19 04:59:33,513 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 04:59:34,207 INFO L349 Elim1Store]: treesize reduction 55, result has 81.5 percent of original size [2023-11-19 04:59:34,208 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 83 treesize of output 257