./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/ldv-memsafety/memleaks_test23_2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 9bd2c7ff Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6e0bc21-9aa9-44bb-9610-d639f8583e26/bin/utaipan-verify-t7M7D8N6sZ/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6e0bc21-9aa9-44bb-9610-d639f8583e26/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_c6e0bc21-9aa9-44bb-9610-d639f8583e26/bin/utaipan-verify-t7M7D8N6sZ/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6e0bc21-9aa9-44bb-9610-d639f8583e26/bin/utaipan-verify-t7M7D8N6sZ/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/ldv-memsafety/memleaks_test23_2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6e0bc21-9aa9-44bb-9610-d639f8583e26/bin/utaipan-verify-t7M7D8N6sZ/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6e0bc21-9aa9-44bb-9610-d639f8583e26/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-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 8821dcf0dd649f568f6a7cfce8600f412ab79c37bc3c7c7e65db385cdb052111 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 04:16:38,147 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 04:16:38,234 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6e0bc21-9aa9-44bb-9610-d639f8583e26/bin/utaipan-verify-t7M7D8N6sZ/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2023-11-19 04:16:38,239 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 04:16:38,240 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 04:16:38,266 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 04:16:38,267 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 04:16:38,268 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 04:16:38,268 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 04:16:38,269 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 04:16:38,270 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-19 04:16:38,270 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-19 04:16:38,271 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-19 04:16:38,271 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-19 04:16:38,272 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-19 04:16:38,272 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-19 04:16:38,273 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-19 04:16:38,273 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-19 04:16:38,274 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-19 04:16:38,274 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-19 04:16:38,275 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-19 04:16:38,276 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-19 04:16:38,277 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-19 04:16:38,278 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-19 04:16:38,279 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 04:16:38,280 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-19 04:16:38,280 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 04:16:38,280 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-19 04:16:38,281 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 04:16:38,281 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-19 04:16:38,283 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-19 04:16:38,283 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-19 04:16:38,283 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 04:16:38,283 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-19 04:16:38,284 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-19 04:16:38,284 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-19 04:16:38,284 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 04:16:38,284 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 04:16:38,285 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 04:16:38,285 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 04:16:38,285 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 04:16:38,286 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 04:16:38,286 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-19 04:16:38,287 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 04:16:38,287 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-19 04:16:38,287 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 04:16:38,288 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_c6e0bc21-9aa9-44bb-9610-d639f8583e26/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6e0bc21-9aa9-44bb-9610-d639f8583e26/bin/utaipan-verify-t7M7D8N6sZ Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8821dcf0dd649f568f6a7cfce8600f412ab79c37bc3c7c7e65db385cdb052111 [2023-11-19 04:16:38,623 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 04:16:38,656 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 04:16:38,659 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 04:16:38,660 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 04:16:38,661 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 04:16:38,663 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6e0bc21-9aa9-44bb-9610-d639f8583e26/bin/utaipan-verify-t7M7D8N6sZ/../../sv-benchmarks/c/ldv-memsafety/memleaks_test23_2.i [2023-11-19 04:16:41,846 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 04:16:42,233 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 04:16:42,234 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6e0bc21-9aa9-44bb-9610-d639f8583e26/sv-benchmarks/c/ldv-memsafety/memleaks_test23_2.i [2023-11-19 04:16:42,261 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6e0bc21-9aa9-44bb-9610-d639f8583e26/bin/utaipan-verify-t7M7D8N6sZ/data/263242d3c/67c6fcd4c9bd4f18942c3d36a70b9d44/FLAGb3a499aa0 [2023-11-19 04:16:42,441 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6e0bc21-9aa9-44bb-9610-d639f8583e26/bin/utaipan-verify-t7M7D8N6sZ/data/263242d3c/67c6fcd4c9bd4f18942c3d36a70b9d44 [2023-11-19 04:16:42,443 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 04:16:42,444 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 04:16:42,446 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 04:16:42,446 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 04:16:42,451 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 04:16:42,452 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 04:16:42" (1/1) ... [2023-11-19 04:16:42,453 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2a6874b8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:16:42, skipping insertion in model container [2023-11-19 04:16:42,453 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 04:16:42" (1/1) ... [2023-11-19 04:16:42,522 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 04:16:43,030 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 04:16:43,058 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 04:16:43,059 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@117f8500 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:16:43, skipping insertion in model container [2023-11-19 04:16:43,059 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 04:16:43,059 INFO L186 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2023-11-19 04:16:43,061 INFO L158 Benchmark]: Toolchain (without parser) took 615.74ms. Allocated memory is still 146.8MB. Free memory was 105.4MB in the beginning and 90.6MB in the end (delta: 14.8MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2023-11-19 04:16:43,062 INFO L158 Benchmark]: CDTParser took 0.24ms. Allocated memory is still 107.0MB. Free memory was 55.7MB in the beginning and 55.7MB in the end (delta: 28.2kB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-19 04:16:43,063 INFO L158 Benchmark]: CACSL2BoogieTranslator took 613.58ms. Allocated memory is still 146.8MB. Free memory was 105.4MB in the beginning and 90.6MB in the end (delta: 14.8MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2023-11-19 04:16:43,064 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24ms. Allocated memory is still 107.0MB. Free memory was 55.7MB in the beginning and 55.7MB in the end (delta: 28.2kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 613.58ms. Allocated memory is still 146.8MB. Free memory was 105.4MB in the beginning and 90.6MB in the end (delta: 14.8MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 576]: Unsupported Syntax Found a cast between two array/pointer types of different sizes while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6e0bc21-9aa9-44bb-9610-d639f8583e26/bin/utaipan-verify-t7M7D8N6sZ/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6e0bc21-9aa9-44bb-9610-d639f8583e26/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_c6e0bc21-9aa9-44bb-9610-d639f8583e26/bin/utaipan-verify-t7M7D8N6sZ/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6e0bc21-9aa9-44bb-9610-d639f8583e26/bin/utaipan-verify-t7M7D8N6sZ/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/ldv-memsafety/memleaks_test23_2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6e0bc21-9aa9-44bb-9610-d639f8583e26/bin/utaipan-verify-t7M7D8N6sZ/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6e0bc21-9aa9-44bb-9610-d639f8583e26/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-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 8821dcf0dd649f568f6a7cfce8600f412ab79c37bc3c7c7e65db385cdb052111 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 04:16:45,486 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 04:16:45,630 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6e0bc21-9aa9-44bb-9610-d639f8583e26/bin/utaipan-verify-t7M7D8N6sZ/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf [2023-11-19 04:16:45,642 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 04:16:45,643 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 04:16:45,697 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 04:16:45,698 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 04:16:45,699 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 04:16:45,700 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 04:16:45,701 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 04:16:45,701 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-19 04:16:45,702 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-19 04:16:45,703 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-19 04:16:45,706 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-19 04:16:45,707 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-19 04:16:45,707 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-19 04:16:45,710 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-19 04:16:45,714 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-19 04:16:45,715 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 04:16:45,716 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-19 04:16:45,718 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 04:16:45,719 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-19 04:16:45,719 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 04:16:45,720 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-19 04:16:45,720 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-19 04:16:45,721 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-19 04:16:45,721 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 04:16:45,722 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-19 04:16:45,722 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-11-19 04:16:45,722 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-11-19 04:16:45,724 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-19 04:16:45,724 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-19 04:16:45,725 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 04:16:45,725 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 04:16:45,725 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-19 04:16:45,726 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 04:16:45,727 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 04:16:45,727 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 04:16:45,727 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 04:16:45,728 INFO L153 SettingsManager]: * Trace refinement strategy=WALRUS [2023-11-19 04:16:45,728 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-11-19 04:16:45,728 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-19 04:16:45,729 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 04:16:45,729 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_c6e0bc21-9aa9-44bb-9610-d639f8583e26/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6e0bc21-9aa9-44bb-9610-d639f8583e26/bin/utaipan-verify-t7M7D8N6sZ Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8821dcf0dd649f568f6a7cfce8600f412ab79c37bc3c7c7e65db385cdb052111 [2023-11-19 04:16:46,191 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 04:16:46,225 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 04:16:46,228 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 04:16:46,229 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 04:16:46,230 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 04:16:46,232 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6e0bc21-9aa9-44bb-9610-d639f8583e26/bin/utaipan-verify-t7M7D8N6sZ/../../sv-benchmarks/c/ldv-memsafety/memleaks_test23_2.i [2023-11-19 04:16:49,443 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 04:16:49,838 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 04:16:49,839 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6e0bc21-9aa9-44bb-9610-d639f8583e26/sv-benchmarks/c/ldv-memsafety/memleaks_test23_2.i [2023-11-19 04:16:49,858 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6e0bc21-9aa9-44bb-9610-d639f8583e26/bin/utaipan-verify-t7M7D8N6sZ/data/388f55816/af7e2f8af68f42919c3f921fe3c2a0fd/FLAGfd0498a03 [2023-11-19 04:16:49,873 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6e0bc21-9aa9-44bb-9610-d639f8583e26/bin/utaipan-verify-t7M7D8N6sZ/data/388f55816/af7e2f8af68f42919c3f921fe3c2a0fd [2023-11-19 04:16:49,875 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 04:16:49,876 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 04:16:49,878 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 04:16:49,878 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 04:16:49,883 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 04:16:49,884 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 04:16:49" (1/1) ... [2023-11-19 04:16:49,885 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7e107724 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:16:49, skipping insertion in model container [2023-11-19 04:16:49,885 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 04:16:49" (1/1) ... [2023-11-19 04:16:49,935 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 04:16:50,484 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 04:16:50,512 INFO L199 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2023-11-19 04:16:50,527 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 04:16:50,618 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 04:16:50,639 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 04:16:50,742 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 04:16:50,807 WARN L675 CHandler]: The function release is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 04:16:50,815 INFO L206 MainTranslator]: Completed translation [2023-11-19 04:16:50,815 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:16:50 WrapperNode [2023-11-19 04:16:50,815 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 04:16:50,817 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 04:16:50,817 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 04:16:50,817 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 04:16:50,824 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:16:50" (1/1) ... [2023-11-19 04:16:50,872 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:16:50" (1/1) ... [2023-11-19 04:16:50,914 INFO L138 Inliner]: procedures = 175, calls = 119, calls flagged for inlining = 30, calls inlined = 15, statements flattened = 199 [2023-11-19 04:16:50,915 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 04:16:50,916 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 04:16:50,916 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 04:16:50,916 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 04:16:50,929 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:16:50" (1/1) ... [2023-11-19 04:16:50,929 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:16:50" (1/1) ... [2023-11-19 04:16:50,957 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:16:50" (1/1) ... [2023-11-19 04:16:50,958 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:16:50" (1/1) ... [2023-11-19 04:16:50,995 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:16:50" (1/1) ... [2023-11-19 04:16:51,012 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:16:50" (1/1) ... [2023-11-19 04:16:51,016 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:16:50" (1/1) ... [2023-11-19 04:16:51,019 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:16:50" (1/1) ... [2023-11-19 04:16:51,038 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 04:16:51,039 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 04:16:51,039 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 04:16:51,040 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 04:16:51,041 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:16:50" (1/1) ... [2023-11-19 04:16:51,047 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 04:16:51,074 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6e0bc21-9aa9-44bb-9610-d639f8583e26/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 04:16:51,089 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6e0bc21-9aa9-44bb-9610-d639f8583e26/bin/utaipan-verify-t7M7D8N6sZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 04:16:51,113 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6e0bc21-9aa9-44bb-9610-d639f8583e26/bin/utaipan-verify-t7M7D8N6sZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 04:16:51,138 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2023-11-19 04:16:51,138 INFO L130 BoogieDeclarations]: Found specification of procedure LDV_INIT_LIST_HEAD [2023-11-19 04:16:51,138 INFO L138 BoogieDeclarations]: Found implementation of procedure LDV_INIT_LIST_HEAD [2023-11-19 04:16:51,138 INFO L130 BoogieDeclarations]: Found specification of procedure __ldv_list_add [2023-11-19 04:16:51,139 INFO L138 BoogieDeclarations]: Found implementation of procedure __ldv_list_add [2023-11-19 04:16:51,139 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2023-11-19 04:16:51,139 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2023-11-19 04:16:51,139 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-19 04:16:51,140 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 04:16:51,140 INFO L130 BoogieDeclarations]: Found specification of procedure free_reports [2023-11-19 04:16:51,140 INFO L138 BoogieDeclarations]: Found implementation of procedure free_reports [2023-11-19 04:16:51,140 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-19 04:16:51,141 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-19 04:16:51,141 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-19 04:16:51,141 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2023-11-19 04:16:51,141 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-19 04:16:51,142 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-11-19 04:16:51,142 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_list_del [2023-11-19 04:16:51,142 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_list_del [2023-11-19 04:16:51,142 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2023-11-19 04:16:51,142 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2023-11-19 04:16:51,143 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 04:16:51,143 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 04:16:51,312 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 04:16:51,314 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 04:16:52,145 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 04:16:52,156 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 04:16:52,160 INFO L302 CfgBuilder]: Removed 2 assume(true) statements. [2023-11-19 04:16:52,170 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 04:16:52 BoogieIcfgContainer [2023-11-19 04:16:52,170 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 04:16:52,175 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 04:16:52,175 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 04:16:52,179 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 04:16:52,180 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 04:16:49" (1/3) ... [2023-11-19 04:16:52,181 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6a37edf8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 04:16:52, skipping insertion in model container [2023-11-19 04:16:52,181 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:16:50" (2/3) ... [2023-11-19 04:16:52,185 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6a37edf8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 04:16:52, skipping insertion in model container [2023-11-19 04:16:52,185 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 04:16:52" (3/3) ... [2023-11-19 04:16:52,187 INFO L112 eAbstractionObserver]: Analyzing ICFG memleaks_test23_2.i [2023-11-19 04:16:52,212 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 04:16:52,212 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 79 error locations. [2023-11-19 04:16:52,275 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 04:16:52,283 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;@5afe0f0b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-19 04:16:52,284 INFO L358 AbstractCegarLoop]: Starting to check reachability of 79 error locations. [2023-11-19 04:16:52,291 INFO L276 IsEmpty]: Start isEmpty. Operand has 205 states, 111 states have (on average 1.837837837837838) internal successors, (204), 190 states have internal predecessors, (204), 8 states have call successors, (8), 6 states have call predecessors, (8), 6 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2023-11-19 04:16:52,322 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2023-11-19 04:16:52,323 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:16:52,323 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 04:16:52,324 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting LDV_INIT_LIST_HEADErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [free_reportsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 76 more)] === [2023-11-19 04:16:52,331 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:16:52,331 INFO L85 PathProgramCache]: Analyzing trace with hash 1113514230, now seen corresponding path program 1 times [2023-11-19 04:16:52,346 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-19 04:16:52,346 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1455424] [2023-11-19 04:16:52,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:16:52,347 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 04:16:52,348 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6e0bc21-9aa9-44bb-9610-d639f8583e26/bin/utaipan-verify-t7M7D8N6sZ/mathsat [2023-11-19 04:16:52,352 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6e0bc21-9aa9-44bb-9610-d639f8583e26/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 04:16:52,378 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6e0bc21-9aa9-44bb-9610-d639f8583e26/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 04:16:52,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:16:52,501 INFO L262 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-19 04:16:52,512 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 04:16:52,595 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 04:16:52,696 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 04:16:52,696 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 04:16:52,697 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-19 04:16:52,697 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1455424] [2023-11-19 04:16:52,698 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1455424] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 04:16:52,698 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 04:16:52,698 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-19 04:16:52,700 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2040339626] [2023-11-19 04:16:52,701 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 04:16:52,705 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-19 04:16:52,705 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-19 04:16:52,733 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-19 04:16:52,734 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-19 04:16:52,738 INFO L87 Difference]: Start difference. First operand has 205 states, 111 states have (on average 1.837837837837838) internal successors, (204), 190 states have internal predecessors, (204), 8 states have call successors, (8), 6 states have call predecessors, (8), 6 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) Second operand has 7 states, 6 states have (on average 1.5) internal successors, (9), 5 states have internal predecessors, (9), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-19 04:16:53,792 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 04:16:53,792 INFO L93 Difference]: Finished difference Result 222 states and 237 transitions. [2023-11-19 04:16:53,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-19 04:16:53,795 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 1.5) internal successors, (9), 5 states have internal predecessors, (9), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 12 [2023-11-19 04:16:53,795 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 04:16:53,807 INFO L225 Difference]: With dead ends: 222 [2023-11-19 04:16:53,809 INFO L226 Difference]: Without dead ends: 220 [2023-11-19 04:16:53,810 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2023-11-19 04:16:53,814 INFO L413 NwaCegarLoop]: 205 mSDtfsCounter, 18 mSDsluCounter, 635 mSDsCounter, 0 mSdLazyCounter, 457 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 840 SdHoareTripleChecker+Invalid, 461 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 457 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-11-19 04:16:53,816 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 840 Invalid, 461 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 457 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-11-19 04:16:53,834 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 220 states. [2023-11-19 04:16:53,886 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 220 to 212. [2023-11-19 04:16:53,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 212 states, 117 states have (on average 1.7863247863247864) internal successors, (209), 195 states have internal predecessors, (209), 9 states have call successors, (9), 7 states have call predecessors, (9), 8 states have return successors, (10), 9 states have call predecessors, (10), 9 states have call successors, (10) [2023-11-19 04:16:53,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 212 states to 212 states and 228 transitions. [2023-11-19 04:16:53,904 INFO L78 Accepts]: Start accepts. Automaton has 212 states and 228 transitions. Word has length 12 [2023-11-19 04:16:53,904 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 04:16:53,905 INFO L495 AbstractCegarLoop]: Abstraction has 212 states and 228 transitions. [2023-11-19 04:16:53,905 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 1.5) internal successors, (9), 5 states have internal predecessors, (9), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-19 04:16:53,905 INFO L276 IsEmpty]: Start isEmpty. Operand 212 states and 228 transitions. [2023-11-19 04:16:53,906 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2023-11-19 04:16:53,906 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:16:53,906 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 04:16:53,914 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6e0bc21-9aa9-44bb-9610-d639f8583e26/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 04:16:54,109 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6e0bc21-9aa9-44bb-9610-d639f8583e26/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 04:16:54,109 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting LDV_INIT_LIST_HEADErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [free_reportsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 76 more)] === [2023-11-19 04:16:54,110 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:16:54,110 INFO L85 PathProgramCache]: Analyzing trace with hash 1113514231, now seen corresponding path program 1 times [2023-11-19 04:16:54,111 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-19 04:16:54,112 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1680889490] [2023-11-19 04:16:54,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:16:54,112 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 04:16:54,113 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6e0bc21-9aa9-44bb-9610-d639f8583e26/bin/utaipan-verify-t7M7D8N6sZ/mathsat [2023-11-19 04:16:54,114 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6e0bc21-9aa9-44bb-9610-d639f8583e26/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 04:16:54,119 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6e0bc21-9aa9-44bb-9610-d639f8583e26/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 04:16:54,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:16:54,230 INFO L262 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 14 conjunts are in the unsatisfiable core [2023-11-19 04:16:54,234 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 04:16:54,260 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 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-11-19 04:16:54,414 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 04:16:54,414 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 04:16:54,414 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-19 04:16:54,418 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1680889490] [2023-11-19 04:16:54,418 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1680889490] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 04:16:54,419 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 04:16:54,419 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-19 04:16:54,419 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [58388708] [2023-11-19 04:16:54,419 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 04:16:54,421 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-19 04:16:54,421 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-19 04:16:54,422 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-19 04:16:54,422 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-11-19 04:16:54,423 INFO L87 Difference]: Start difference. First operand 212 states and 228 transitions. Second operand has 8 states, 7 states have (on average 1.2857142857142858) internal successors, (9), 6 states have internal predecessors, (9), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-19 04:16:55,600 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 04:16:55,601 INFO L93 Difference]: Finished difference Result 217 states and 231 transitions. [2023-11-19 04:16:55,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-19 04:16:55,602 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 1.2857142857142858) internal successors, (9), 6 states have internal predecessors, (9), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 12 [2023-11-19 04:16:55,602 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 04:16:55,604 INFO L225 Difference]: With dead ends: 217 [2023-11-19 04:16:55,604 INFO L226 Difference]: Without dead ends: 217 [2023-11-19 04:16:55,605 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2023-11-19 04:16:55,606 INFO L413 NwaCegarLoop]: 203 mSDtfsCounter, 15 mSDsluCounter, 896 mSDsCounter, 0 mSdLazyCounter, 401 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 1099 SdHoareTripleChecker+Invalid, 402 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 401 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-11-19 04:16:55,606 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 1099 Invalid, 402 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 401 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-11-19 04:16:55,607 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 217 states. [2023-11-19 04:16:55,632 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 217 to 212. [2023-11-19 04:16:55,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 212 states, 117 states have (on average 1.7692307692307692) internal successors, (207), 195 states have internal predecessors, (207), 9 states have call successors, (9), 7 states have call predecessors, (9), 8 states have return successors, (10), 9 states have call predecessors, (10), 9 states have call successors, (10) [2023-11-19 04:16:55,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 212 states to 212 states and 226 transitions. [2023-11-19 04:16:55,639 INFO L78 Accepts]: Start accepts. Automaton has 212 states and 226 transitions. Word has length 12 [2023-11-19 04:16:55,639 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 04:16:55,639 INFO L495 AbstractCegarLoop]: Abstraction has 212 states and 226 transitions. [2023-11-19 04:16:55,640 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 1.2857142857142858) internal successors, (9), 6 states have internal predecessors, (9), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-19 04:16:55,641 INFO L276 IsEmpty]: Start isEmpty. Operand 212 states and 226 transitions. [2023-11-19 04:16:55,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2023-11-19 04:16:55,643 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:16:55,644 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 04:16:55,648 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6e0bc21-9aa9-44bb-9610-d639f8583e26/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 04:16:55,846 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6e0bc21-9aa9-44bb-9610-d639f8583e26/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 04:16:55,847 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting LDV_INIT_LIST_HEADErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [free_reportsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 76 more)] === [2023-11-19 04:16:55,847 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:16:55,848 INFO L85 PathProgramCache]: Analyzing trace with hash -1438642731, now seen corresponding path program 1 times [2023-11-19 04:16:55,848 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-19 04:16:55,848 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1091575443] [2023-11-19 04:16:55,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:16:55,849 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-19 04:16:55,849 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6e0bc21-9aa9-44bb-9610-d639f8583e26/bin/utaipan-verify-t7M7D8N6sZ/mathsat [2023-11-19 04:16:55,850 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6e0bc21-9aa9-44bb-9610-d639f8583e26/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 04:16:55,866 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6e0bc21-9aa9-44bb-9610-d639f8583e26/bin/utaipan-verify-t7M7D8N6sZ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2023-11-19 04:16:55,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:16:55,935 INFO L262 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-19 04:16:55,937 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 04:16:55,992 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 04:16:55,992 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 04:16:55,993 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-19 04:16:55,993 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1091575443] [2023-11-19 04:16:55,993 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1091575443] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 04:16:55,993 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 04:16:55,993 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-19 04:16:55,994 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1132888861] [2023-11-19 04:16:55,994 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 04:16:55,994 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-19 04:16:55,994 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-19 04:16:55,995 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-19 04:16:55,995 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-19 04:16:55,995 INFO L87 Difference]: Start difference. First operand 212 states and 226 transitions. Second operand has 5 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-19 04:16:56,041 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 04:16:56,042 INFO L93 Difference]: Finished difference Result 204 states and 217 transitions. [2023-11-19 04:16:56,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-19 04:16:56,042 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 12 [2023-11-19 04:16:56,043 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 04:16:56,044 INFO L225 Difference]: With dead ends: 204 [2023-11-19 04:16:56,044 INFO L226 Difference]: Without dead ends: 204 [2023-11-19 04:16:56,045 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-19 04:16:56,046 INFO L413 NwaCegarLoop]: 214 mSDtfsCounter, 0 mSDsluCounter, 623 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 837 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 04:16:56,046 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 837 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 04:16:56,048 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 204 states. [2023-11-19 04:16:56,056 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 204 to 203. [2023-11-19 04:16:56,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 203 states, 113 states have (on average 1.761061946902655) internal successors, (199), 187 states have internal predecessors, (199), 8 states have call successors, (8), 6 states have call predecessors, (8), 7 states have return successors, (9), 9 states have call predecessors, (9), 8 states have call successors, (9) [2023-11-19 04:16:56,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 203 states to 203 states and 216 transitions. [2023-11-19 04:16:56,058 INFO L78 Accepts]: Start accepts. Automaton has 203 states and 216 transitions. Word has length 12 [2023-11-19 04:16:56,059 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 04:16:56,059 INFO L495 AbstractCegarLoop]: Abstraction has 203 states and 216 transitions. [2023-11-19 04:16:56,059 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-19 04:16:56,059 INFO L276 IsEmpty]: Start isEmpty. Operand 203 states and 216 transitions. [2023-11-19 04:16:56,060 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2023-11-19 04:16:56,060 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:16:56,060 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 04:16:56,068 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6e0bc21-9aa9-44bb-9610-d639f8583e26/bin/utaipan-verify-t7M7D8N6sZ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2023-11-19 04:16:56,263 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6e0bc21-9aa9-44bb-9610-d639f8583e26/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 04:16:56,263 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr42REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [free_reportsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 76 more)] === [2023-11-19 04:16:56,264 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:16:56,264 INFO L85 PathProgramCache]: Analyzing trace with hash 1113428854, now seen corresponding path program 1 times [2023-11-19 04:16:56,264 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-19 04:16:56,264 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [829708324] [2023-11-19 04:16:56,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:16:56,265 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 04:16:56,265 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6e0bc21-9aa9-44bb-9610-d639f8583e26/bin/utaipan-verify-t7M7D8N6sZ/mathsat [2023-11-19 04:16:56,267 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6e0bc21-9aa9-44bb-9610-d639f8583e26/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 04:16:56,269 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6e0bc21-9aa9-44bb-9610-d639f8583e26/bin/utaipan-verify-t7M7D8N6sZ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2023-11-19 04:16:56,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:16:56,347 INFO L262 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-19 04:16:56,348 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 04:16:56,381 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 04:16:56,381 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 04:16:56,381 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-19 04:16:56,382 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [829708324] [2023-11-19 04:16:56,382 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [829708324] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 04:16:56,382 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 04:16:56,382 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-19 04:16:56,382 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [67922620] [2023-11-19 04:16:56,382 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 04:16:56,383 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-19 04:16:56,383 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-19 04:16:56,384 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-19 04:16:56,384 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-19 04:16:56,384 INFO L87 Difference]: Start difference. First operand 203 states and 216 transitions. Second operand has 5 states, 5 states have (on average 2.0) internal successors, (10), 4 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-19 04:16:56,426 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 04:16:56,426 INFO L93 Difference]: Finished difference Result 204 states and 216 transitions. [2023-11-19 04:16:56,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-19 04:16:56,427 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.0) internal successors, (10), 4 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 12 [2023-11-19 04:16:56,427 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 04:16:56,429 INFO L225 Difference]: With dead ends: 204 [2023-11-19 04:16:56,429 INFO L226 Difference]: Without dead ends: 204 [2023-11-19 04:16:56,429 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-19 04:16:56,430 INFO L413 NwaCegarLoop]: 206 mSDtfsCounter, 108 mSDsluCounter, 502 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 113 SdHoareTripleChecker+Valid, 708 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 04:16:56,431 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [113 Valid, 708 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 04:16:56,432 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 204 states. [2023-11-19 04:16:56,438 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 204 to 203. [2023-11-19 04:16:56,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 203 states, 113 states have (on average 1.752212389380531) internal successors, (198), 187 states have internal predecessors, (198), 8 states have call successors, (8), 6 states have call predecessors, (8), 7 states have return successors, (9), 9 states have call predecessors, (9), 8 states have call successors, (9) [2023-11-19 04:16:56,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 203 states to 203 states and 215 transitions. [2023-11-19 04:16:56,441 INFO L78 Accepts]: Start accepts. Automaton has 203 states and 215 transitions. Word has length 12 [2023-11-19 04:16:56,441 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 04:16:56,441 INFO L495 AbstractCegarLoop]: Abstraction has 203 states and 215 transitions. [2023-11-19 04:16:56,442 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.0) internal successors, (10), 4 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-19 04:16:56,442 INFO L276 IsEmpty]: Start isEmpty. Operand 203 states and 215 transitions. [2023-11-19 04:16:56,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2023-11-19 04:16:56,443 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:16:56,443 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 04:16:56,453 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6e0bc21-9aa9-44bb-9610-d639f8583e26/bin/utaipan-verify-t7M7D8N6sZ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2023-11-19 04:16:56,645 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6e0bc21-9aa9-44bb-9610-d639f8583e26/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 04:16:56,646 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr42REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [free_reportsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 76 more)] === [2023-11-19 04:16:56,646 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:16:56,646 INFO L85 PathProgramCache]: Analyzing trace with hash -1438728107, now seen corresponding path program 1 times [2023-11-19 04:16:56,647 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-19 04:16:56,647 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [441761820] [2023-11-19 04:16:56,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:16:56,647 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 04:16:56,648 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6e0bc21-9aa9-44bb-9610-d639f8583e26/bin/utaipan-verify-t7M7D8N6sZ/mathsat [2023-11-19 04:16:56,649 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6e0bc21-9aa9-44bb-9610-d639f8583e26/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 04:16:56,651 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6e0bc21-9aa9-44bb-9610-d639f8583e26/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 04:16:56,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:16:56,737 INFO L262 TraceCheckSpWp]: Trace formula consists of 57 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-19 04:16:56,740 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 04:16:56,771 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 04:16:56,771 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 04:16:56,772 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-19 04:16:56,772 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [441761820] [2023-11-19 04:16:56,772 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [441761820] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 04:16:56,772 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 04:16:56,773 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-19 04:16:56,775 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [218219821] [2023-11-19 04:16:56,777 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 04:16:56,778 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-19 04:16:56,778 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-19 04:16:56,779 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-19 04:16:56,779 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-19 04:16:56,779 INFO L87 Difference]: Start difference. First operand 203 states and 215 transitions. Second operand has 5 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-19 04:16:56,829 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 04:16:56,829 INFO L93 Difference]: Finished difference Result 208 states and 219 transitions. [2023-11-19 04:16:56,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-19 04:16:56,838 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 12 [2023-11-19 04:16:56,838 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 04:16:56,839 INFO L225 Difference]: With dead ends: 208 [2023-11-19 04:16:56,840 INFO L226 Difference]: Without dead ends: 208 [2023-11-19 04:16:56,840 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 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 04:16:56,841 INFO L413 NwaCegarLoop]: 209 mSDtfsCounter, 105 mSDsluCounter, 511 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 110 SdHoareTripleChecker+Valid, 720 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 04:16:56,841 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [110 Valid, 720 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 04:16:56,842 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 208 states. [2023-11-19 04:16:56,847 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 208 to 205. [2023-11-19 04:16:56,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 205 states, 115 states have (on average 1.7391304347826086) internal successors, (200), 189 states have internal predecessors, (200), 8 states have call successors, (8), 6 states have call predecessors, (8), 7 states have return successors, (9), 9 states have call predecessors, (9), 8 states have call successors, (9) [2023-11-19 04:16:56,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 205 states to 205 states and 217 transitions. [2023-11-19 04:16:56,852 INFO L78 Accepts]: Start accepts. Automaton has 205 states and 217 transitions. Word has length 12 [2023-11-19 04:16:56,852 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 04:16:56,852 INFO L495 AbstractCegarLoop]: Abstraction has 205 states and 217 transitions. [2023-11-19 04:16:56,852 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-19 04:16:56,853 INFO L276 IsEmpty]: Start isEmpty. Operand 205 states and 217 transitions. [2023-11-19 04:16:56,853 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2023-11-19 04:16:56,854 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:16:56,854 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 04:16:56,864 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6e0bc21-9aa9-44bb-9610-d639f8583e26/bin/utaipan-verify-t7M7D8N6sZ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Ended with exit code 0 [2023-11-19 04:16:57,056 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6e0bc21-9aa9-44bb-9610-d639f8583e26/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 04:16:57,056 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr49ASSERT_VIOLATIONMEMORY_LEAK === [free_reportsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 76 more)] === [2023-11-19 04:16:57,057 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:16:57,057 INFO L85 PathProgramCache]: Analyzing trace with hash -1650878244, now seen corresponding path program 1 times [2023-11-19 04:16:57,057 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-19 04:16:57,057 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1493760182] [2023-11-19 04:16:57,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:16:57,057 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 04:16:57,057 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6e0bc21-9aa9-44bb-9610-d639f8583e26/bin/utaipan-verify-t7M7D8N6sZ/mathsat [2023-11-19 04:16:57,058 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6e0bc21-9aa9-44bb-9610-d639f8583e26/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 04:16:57,059 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6e0bc21-9aa9-44bb-9610-d639f8583e26/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 04:16:57,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:16:57,126 INFO L262 TraceCheckSpWp]: Trace formula consists of 50 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-19 04:16:57,127 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 04:16:57,186 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 04:16:57,186 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 04:16:57,186 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-19 04:16:57,186 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1493760182] [2023-11-19 04:16:57,186 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1493760182] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 04:16:57,187 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 04:16:57,187 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 04:16:57,187 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [150705183] [2023-11-19 04:16:57,187 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 04:16:57,187 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 04:16:57,187 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-19 04:16:57,188 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 04:16:57,188 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-19 04:16:57,188 INFO L87 Difference]: Start difference. First operand 205 states and 217 transitions. Second operand has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 4 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-19 04:16:57,660 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 04:16:57,660 INFO L93 Difference]: Finished difference Result 217 states and 231 transitions. [2023-11-19 04:16:57,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 04:16:57,661 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 4 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 13 [2023-11-19 04:16:57,661 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 04:16:57,663 INFO L225 Difference]: With dead ends: 217 [2023-11-19 04:16:57,663 INFO L226 Difference]: Without dead ends: 209 [2023-11-19 04:16:57,663 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-19 04:16:57,664 INFO L413 NwaCegarLoop]: 171 mSDtfsCounter, 51 mSDsluCounter, 211 mSDsCounter, 0 mSdLazyCounter, 205 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 382 SdHoareTripleChecker+Invalid, 213 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 205 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-19 04:16:57,664 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [52 Valid, 382 Invalid, 213 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 205 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-19 04:16:57,665 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 209 states. [2023-11-19 04:16:57,671 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 209 to 199. [2023-11-19 04:16:57,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 199 states, 110 states have (on average 1.7636363636363637) internal successors, (194), 184 states have internal predecessors, (194), 8 states have call successors, (8), 6 states have call predecessors, (8), 6 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2023-11-19 04:16:57,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 199 states to 199 states and 210 transitions. [2023-11-19 04:16:57,674 INFO L78 Accepts]: Start accepts. Automaton has 199 states and 210 transitions. Word has length 13 [2023-11-19 04:16:57,674 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 04:16:57,674 INFO L495 AbstractCegarLoop]: Abstraction has 199 states and 210 transitions. [2023-11-19 04:16:57,675 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 4 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-19 04:16:57,676 INFO L276 IsEmpty]: Start isEmpty. Operand 199 states and 210 transitions. [2023-11-19 04:16:57,677 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2023-11-19 04:16:57,677 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:16:57,677 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 04:16:57,689 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6e0bc21-9aa9-44bb-9610-d639f8583e26/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 04:16:57,879 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6e0bc21-9aa9-44bb-9610-d639f8583e26/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 04:16:57,879 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [free_reportsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 76 more)] === [2023-11-19 04:16:57,880 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:16:57,880 INFO L85 PathProgramCache]: Analyzing trace with hash 1165844703, now seen corresponding path program 1 times [2023-11-19 04:16:57,880 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-19 04:16:57,880 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1131934279] [2023-11-19 04:16:57,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:16:57,881 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 04:16:57,881 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6e0bc21-9aa9-44bb-9610-d639f8583e26/bin/utaipan-verify-t7M7D8N6sZ/mathsat [2023-11-19 04:16:57,882 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6e0bc21-9aa9-44bb-9610-d639f8583e26/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 04:16:57,883 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6e0bc21-9aa9-44bb-9610-d639f8583e26/bin/utaipan-verify-t7M7D8N6sZ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2023-11-19 04:16:57,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:16:57,979 INFO L262 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 15 conjunts are in the unsatisfiable core [2023-11-19 04:16:57,981 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 04:16:58,115 WARN L876 $PredicateComparison]: unable to prove that (exists ((|ldv_malloc_#res.base| (_ BitVec 32))) (and (= (_ bv0 1) (select |c_old(#valid)| |ldv_malloc_#res.base|)) (= (store |c_old(#length)| |ldv_malloc_#res.base| (select |c_#length| |ldv_malloc_#res.base|)) |c_#length|))) is different from true [2023-11-19 04:16:58,155 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 04:16:58,157 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 14 treesize of output 9 [2023-11-19 04:16:58,228 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 04:16:58,228 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 04:16:58,228 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-19 04:16:58,228 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1131934279] [2023-11-19 04:16:58,229 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1131934279] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 04:16:58,229 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 04:16:58,229 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-19 04:16:58,229 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [996907308] [2023-11-19 04:16:58,229 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 04:16:58,230 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-19 04:16:58,230 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-19 04:16:58,230 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-19 04:16:58,231 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=28, Unknown=1, NotChecked=10, Total=56 [2023-11-19 04:16:58,231 INFO L87 Difference]: Start difference. First operand 199 states and 210 transitions. Second operand has 8 states, 6 states have (on average 2.0) internal successors, (12), 7 states have internal predecessors, (12), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-19 04:16:59,240 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 04:16:59,240 INFO L93 Difference]: Finished difference Result 250 states and 264 transitions. [2023-11-19 04:16:59,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-19 04:16:59,240 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 6 states have (on average 2.0) internal successors, (12), 7 states have internal predecessors, (12), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) Word has length 16 [2023-11-19 04:16:59,241 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 04:16:59,243 INFO L225 Difference]: With dead ends: 250 [2023-11-19 04:16:59,243 INFO L226 Difference]: Without dead ends: 250 [2023-11-19 04:16:59,243 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=37, Invalid=76, Unknown=1, NotChecked=18, Total=132 [2023-11-19 04:16:59,244 INFO L413 NwaCegarLoop]: 86 mSDtfsCounter, 497 mSDsluCounter, 125 mSDsCounter, 0 mSdLazyCounter, 422 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 499 SdHoareTripleChecker+Valid, 211 SdHoareTripleChecker+Invalid, 732 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 422 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 262 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-11-19 04:16:59,244 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [499 Valid, 211 Invalid, 732 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 422 Invalid, 0 Unknown, 262 Unchecked, 0.9s Time] [2023-11-19 04:16:59,245 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 250 states. [2023-11-19 04:16:59,252 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 250 to 208. [2023-11-19 04:16:59,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 208 states, 119 states have (on average 1.7394957983193278) internal successors, (207), 192 states have internal predecessors, (207), 8 states have call successors, (8), 7 states have call predecessors, (8), 8 states have return successors, (10), 8 states have call predecessors, (10), 8 states have call successors, (10) [2023-11-19 04:16:59,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 208 states to 208 states and 225 transitions. [2023-11-19 04:16:59,254 INFO L78 Accepts]: Start accepts. Automaton has 208 states and 225 transitions. Word has length 16 [2023-11-19 04:16:59,254 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 04:16:59,255 INFO L495 AbstractCegarLoop]: Abstraction has 208 states and 225 transitions. [2023-11-19 04:16:59,255 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 6 states have (on average 2.0) internal successors, (12), 7 states have internal predecessors, (12), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-19 04:16:59,256 INFO L276 IsEmpty]: Start isEmpty. Operand 208 states and 225 transitions. [2023-11-19 04:16:59,256 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2023-11-19 04:16:59,256 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:16:59,257 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 04:16:59,264 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6e0bc21-9aa9-44bb-9610-d639f8583e26/bin/utaipan-verify-t7M7D8N6sZ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2023-11-19 04:16:59,464 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6e0bc21-9aa9-44bb-9610-d639f8583e26/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 04:16:59,464 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [free_reportsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 76 more)] === [2023-11-19 04:16:59,464 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:16:59,465 INFO L85 PathProgramCache]: Analyzing trace with hash -2093398748, now seen corresponding path program 1 times [2023-11-19 04:16:59,465 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-19 04:16:59,465 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [511667625] [2023-11-19 04:16:59,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:16:59,465 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 04:16:59,466 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6e0bc21-9aa9-44bb-9610-d639f8583e26/bin/utaipan-verify-t7M7D8N6sZ/mathsat [2023-11-19 04:16:59,467 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6e0bc21-9aa9-44bb-9610-d639f8583e26/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 04:16:59,472 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6e0bc21-9aa9-44bb-9610-d639f8583e26/bin/utaipan-verify-t7M7D8N6sZ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2023-11-19 04:16:59,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:16:59,588 INFO L262 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-19 04:16:59,590 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 04:16:59,596 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 04:16:59,633 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 04:16:59,633 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 04:16:59,633 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-19 04:16:59,633 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [511667625] [2023-11-19 04:16:59,634 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [511667625] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 04:16:59,634 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 04:16:59,634 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-19 04:16:59,634 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1712767635] [2023-11-19 04:16:59,634 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 04:16:59,635 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-19 04:16:59,635 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-19 04:16:59,635 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-19 04:16:59,636 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-19 04:16:59,636 INFO L87 Difference]: Start difference. First operand 208 states and 225 transitions. Second operand has 6 states, 5 states have (on average 3.8) internal successors, (19), 5 states have internal predecessors, (19), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2023-11-19 04:17:00,390 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 04:17:00,390 INFO L93 Difference]: Finished difference Result 264 states and 288 transitions. [2023-11-19 04:17:00,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-19 04:17:00,391 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.8) internal successors, (19), 5 states have internal predecessors, (19), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 25 [2023-11-19 04:17:00,392 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 04:17:00,393 INFO L225 Difference]: With dead ends: 264 [2023-11-19 04:17:00,393 INFO L226 Difference]: Without dead ends: 264 [2023-11-19 04:17:00,394 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-11-19 04:17:00,394 INFO L413 NwaCegarLoop]: 172 mSDtfsCounter, 70 mSDsluCounter, 468 mSDsCounter, 0 mSdLazyCounter, 373 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 70 SdHoareTripleChecker+Valid, 640 SdHoareTripleChecker+Invalid, 375 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 373 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-11-19 04:17:00,395 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [70 Valid, 640 Invalid, 375 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 373 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-11-19 04:17:00,396 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 264 states. [2023-11-19 04:17:00,402 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 264 to 236. [2023-11-19 04:17:00,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 236 states, 149 states have (on average 1.7583892617449663) internal successors, (262), 220 states have internal predecessors, (262), 8 states have call successors, (8), 7 states have call predecessors, (8), 8 states have return successors, (10), 8 states have call predecessors, (10), 8 states have call successors, (10) [2023-11-19 04:17:00,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 236 states to 236 states and 280 transitions. [2023-11-19 04:17:00,404 INFO L78 Accepts]: Start accepts. Automaton has 236 states and 280 transitions. Word has length 25 [2023-11-19 04:17:00,404 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 04:17:00,404 INFO L495 AbstractCegarLoop]: Abstraction has 236 states and 280 transitions. [2023-11-19 04:17:00,405 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.8) internal successors, (19), 5 states have internal predecessors, (19), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2023-11-19 04:17:00,405 INFO L276 IsEmpty]: Start isEmpty. Operand 236 states and 280 transitions. [2023-11-19 04:17:00,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2023-11-19 04:17:00,406 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:17:00,406 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 04:17:00,420 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6e0bc21-9aa9-44bb-9610-d639f8583e26/bin/utaipan-verify-t7M7D8N6sZ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2023-11-19 04:17:00,606 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6e0bc21-9aa9-44bb-9610-d639f8583e26/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 04:17:00,606 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [free_reportsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 76 more)] === [2023-11-19 04:17:00,607 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:17:00,607 INFO L85 PathProgramCache]: Analyzing trace with hash -2093398747, now seen corresponding path program 1 times [2023-11-19 04:17:00,607 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-19 04:17:00,607 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1783275773] [2023-11-19 04:17:00,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:17:00,608 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 04:17:00,608 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6e0bc21-9aa9-44bb-9610-d639f8583e26/bin/utaipan-verify-t7M7D8N6sZ/mathsat [2023-11-19 04:17:00,609 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6e0bc21-9aa9-44bb-9610-d639f8583e26/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 04:17:00,612 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6e0bc21-9aa9-44bb-9610-d639f8583e26/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 04:17:00,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:17:00,730 INFO L262 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-19 04:17:00,732 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 04:17:00,744 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 5 [2023-11-19 04:17:00,828 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 04:17:00,828 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 04:17:00,828 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-19 04:17:00,828 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1783275773] [2023-11-19 04:17:00,829 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1783275773] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 04:17:00,829 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 04:17:00,829 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-19 04:17:00,829 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1785838126] [2023-11-19 04:17:00,829 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 04:17:00,830 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-19 04:17:00,830 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-19 04:17:00,831 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-19 04:17:00,831 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-19 04:17:00,832 INFO L87 Difference]: Start difference. First operand 236 states and 280 transitions. Second operand has 6 states, 5 states have (on average 3.8) internal successors, (19), 5 states have internal predecessors, (19), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2023-11-19 04:17:01,844 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 04:17:01,845 INFO L93 Difference]: Finished difference Result 268 states and 292 transitions. [2023-11-19 04:17:01,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-19 04:17:01,845 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.8) internal successors, (19), 5 states have internal predecessors, (19), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 25 [2023-11-19 04:17:01,846 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 04:17:01,847 INFO L225 Difference]: With dead ends: 268 [2023-11-19 04:17:01,848 INFO L226 Difference]: Without dead ends: 268 [2023-11-19 04:17:01,848 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-11-19 04:17:01,848 INFO L413 NwaCegarLoop]: 164 mSDtfsCounter, 75 mSDsluCounter, 483 mSDsCounter, 0 mSdLazyCounter, 357 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 76 SdHoareTripleChecker+Valid, 647 SdHoareTripleChecker+Invalid, 360 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 357 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-11-19 04:17:01,849 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [76 Valid, 647 Invalid, 360 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 357 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-11-19 04:17:01,850 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 268 states. [2023-11-19 04:17:01,856 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 268 to 238. [2023-11-19 04:17:01,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 238 states, 152 states have (on average 1.736842105263158) internal successors, (264), 221 states have internal predecessors, (264), 9 states have call successors, (9), 7 states have call predecessors, (9), 8 states have return successors, (12), 9 states have call predecessors, (12), 9 states have call successors, (12) [2023-11-19 04:17:01,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 238 states to 238 states and 285 transitions. [2023-11-19 04:17:01,859 INFO L78 Accepts]: Start accepts. Automaton has 238 states and 285 transitions. Word has length 25 [2023-11-19 04:17:01,859 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 04:17:01,859 INFO L495 AbstractCegarLoop]: Abstraction has 238 states and 285 transitions. [2023-11-19 04:17:01,859 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.8) internal successors, (19), 5 states have internal predecessors, (19), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2023-11-19 04:17:01,860 INFO L276 IsEmpty]: Start isEmpty. Operand 238 states and 285 transitions. [2023-11-19 04:17:01,860 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2023-11-19 04:17:01,861 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:17:01,861 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 04:17:01,871 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6e0bc21-9aa9-44bb-9610-d639f8583e26/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 04:17:02,063 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6e0bc21-9aa9-44bb-9610-d639f8583e26/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 04:17:02,064 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr39ASSERT_VIOLATIONMEMORY_FREE === [free_reportsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 76 more)] === [2023-11-19 04:17:02,064 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:17:02,064 INFO L85 PathProgramCache]: Analyzing trace with hash -1711433272, now seen corresponding path program 1 times [2023-11-19 04:17:02,065 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-19 04:17:02,065 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1673658039] [2023-11-19 04:17:02,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:17:02,065 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-19 04:17:02,065 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6e0bc21-9aa9-44bb-9610-d639f8583e26/bin/utaipan-verify-t7M7D8N6sZ/mathsat [2023-11-19 04:17:02,066 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6e0bc21-9aa9-44bb-9610-d639f8583e26/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 04:17:02,068 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6e0bc21-9aa9-44bb-9610-d639f8583e26/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 04:17:02,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:17:02,181 INFO L262 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-19 04:17:02,183 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 04:17:02,237 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 04:17:02,237 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 04:17:02,237 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-19 04:17:02,237 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1673658039] [2023-11-19 04:17:02,237 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1673658039] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 04:17:02,237 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 04:17:02,237 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-19 04:17:02,237 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1974232303] [2023-11-19 04:17:02,238 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 04:17:02,238 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-19 04:17:02,238 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-19 04:17:02,238 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-19 04:17:02,238 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-19 04:17:02,239 INFO L87 Difference]: Start difference. First operand 238 states and 285 transitions. Second operand has 6 states, 6 states have (on average 3.5) internal successors, (21), 5 states have internal predecessors, (21), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2023-11-19 04:17:02,357 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 04:17:02,357 INFO L93 Difference]: Finished difference Result 238 states and 284 transitions. [2023-11-19 04:17:02,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-19 04:17:02,358 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.5) internal successors, (21), 5 states have internal predecessors, (21), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 27 [2023-11-19 04:17:02,358 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 04:17:02,360 INFO L225 Difference]: With dead ends: 238 [2023-11-19 04:17:02,360 INFO L226 Difference]: Without dead ends: 238 [2023-11-19 04:17:02,361 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-11-19 04:17:02,361 INFO L413 NwaCegarLoop]: 189 mSDtfsCounter, 90 mSDsluCounter, 669 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 93 SdHoareTripleChecker+Valid, 858 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 04:17:02,362 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [93 Valid, 858 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 59 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 04:17:02,363 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 238 states. [2023-11-19 04:17:02,368 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 238 to 238. [2023-11-19 04:17:02,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 238 states, 152 states have (on average 1.730263157894737) internal successors, (263), 221 states have internal predecessors, (263), 9 states have call successors, (9), 7 states have call predecessors, (9), 8 states have return successors, (12), 9 states have call predecessors, (12), 9 states have call successors, (12) [2023-11-19 04:17:02,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 238 states to 238 states and 284 transitions. [2023-11-19 04:17:02,371 INFO L78 Accepts]: Start accepts. Automaton has 238 states and 284 transitions. Word has length 27 [2023-11-19 04:17:02,371 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 04:17:02,371 INFO L495 AbstractCegarLoop]: Abstraction has 238 states and 284 transitions. [2023-11-19 04:17:02,371 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.5) internal successors, (21), 5 states have internal predecessors, (21), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2023-11-19 04:17:02,371 INFO L276 IsEmpty]: Start isEmpty. Operand 238 states and 284 transitions. [2023-11-19 04:17:02,372 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2023-11-19 04:17:02,372 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:17:02,373 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 04:17:02,381 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6e0bc21-9aa9-44bb-9610-d639f8583e26/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 04:17:02,576 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6e0bc21-9aa9-44bb-9610-d639f8583e26/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 04:17:02,576 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [free_reportsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 76 more)] === [2023-11-19 04:17:02,577 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:17:02,577 INFO L85 PathProgramCache]: Analyzing trace with hash -386500720, now seen corresponding path program 1 times [2023-11-19 04:17:02,577 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-19 04:17:02,578 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1276829826] [2023-11-19 04:17:02,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:17:02,578 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 04:17:02,578 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6e0bc21-9aa9-44bb-9610-d639f8583e26/bin/utaipan-verify-t7M7D8N6sZ/mathsat [2023-11-19 04:17:02,579 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6e0bc21-9aa9-44bb-9610-d639f8583e26/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 04:17:02,616 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6e0bc21-9aa9-44bb-9610-d639f8583e26/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 04:17:02,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:17:02,785 INFO L262 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-19 04:17:02,788 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 04:17:02,800 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 04:17:02,874 INFO L349 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2023-11-19 04:17:02,874 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 14 treesize of output 20 [2023-11-19 04:17:02,957 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 04:17:02,957 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 04:17:02,958 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-19 04:17:02,958 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1276829826] [2023-11-19 04:17:02,958 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1276829826] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 04:17:02,958 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 04:17:02,958 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-19 04:17:02,958 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1019902387] [2023-11-19 04:17:02,959 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 04:17:02,959 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-19 04:17:02,959 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-19 04:17:02,960 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-19 04:17:02,960 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-11-19 04:17:02,960 INFO L87 Difference]: Start difference. First operand 238 states and 284 transitions. Second operand has 8 states, 7 states have (on average 3.857142857142857) internal successors, (27), 6 states have internal predecessors, (27), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-11-19 04:17:03,994 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 04:17:03,994 INFO L93 Difference]: Finished difference Result 249 states and 291 transitions. [2023-11-19 04:17:03,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-19 04:17:03,994 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.857142857142857) internal successors, (27), 6 states have internal predecessors, (27), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 33 [2023-11-19 04:17:03,995 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 04:17:03,997 INFO L225 Difference]: With dead ends: 249 [2023-11-19 04:17:03,997 INFO L226 Difference]: Without dead ends: 249 [2023-11-19 04:17:03,997 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 25 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2023-11-19 04:17:03,998 INFO L413 NwaCegarLoop]: 115 mSDtfsCounter, 141 mSDsluCounter, 445 mSDsCounter, 0 mSdLazyCounter, 562 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 143 SdHoareTripleChecker+Valid, 560 SdHoareTripleChecker+Invalid, 576 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 562 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-11-19 04:17:03,998 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [143 Valid, 560 Invalid, 576 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 562 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-11-19 04:17:03,999 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 249 states. [2023-11-19 04:17:04,004 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 249 to 233. [2023-11-19 04:17:04,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 233 states, 152 states have (on average 1.6644736842105263) internal successors, (253), 216 states have internal predecessors, (253), 9 states have call successors, (9), 7 states have call predecessors, (9), 8 states have return successors, (12), 9 states have call predecessors, (12), 9 states have call successors, (12) [2023-11-19 04:17:04,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 233 states to 233 states and 274 transitions. [2023-11-19 04:17:04,021 INFO L78 Accepts]: Start accepts. Automaton has 233 states and 274 transitions. Word has length 33 [2023-11-19 04:17:04,021 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 04:17:04,021 INFO L495 AbstractCegarLoop]: Abstraction has 233 states and 274 transitions. [2023-11-19 04:17:04,022 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.857142857142857) internal successors, (27), 6 states have internal predecessors, (27), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-11-19 04:17:04,022 INFO L276 IsEmpty]: Start isEmpty. Operand 233 states and 274 transitions. [2023-11-19 04:17:04,023 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2023-11-19 04:17:04,024 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:17:04,024 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 04:17:04,036 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6e0bc21-9aa9-44bb-9610-d639f8583e26/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 04:17:04,236 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6e0bc21-9aa9-44bb-9610-d639f8583e26/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 04:17:04,237 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [free_reportsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 76 more)] === [2023-11-19 04:17:04,237 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:17:04,237 INFO L85 PathProgramCache]: Analyzing trace with hash -386500719, now seen corresponding path program 1 times [2023-11-19 04:17:04,237 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-19 04:17:04,237 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [513008902] [2023-11-19 04:17:04,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:17:04,238 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 04:17:04,238 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6e0bc21-9aa9-44bb-9610-d639f8583e26/bin/utaipan-verify-t7M7D8N6sZ/mathsat [2023-11-19 04:17:04,239 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6e0bc21-9aa9-44bb-9610-d639f8583e26/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 04:17:04,240 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6e0bc21-9aa9-44bb-9610-d639f8583e26/bin/utaipan-verify-t7M7D8N6sZ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2023-11-19 04:17:04,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:17:04,443 INFO L262 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 16 conjunts are in the unsatisfiable core [2023-11-19 04:17:04,453 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 04:17:04,470 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 04:17:04,479 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 5 [2023-11-19 04:17:04,528 WARN L876 $PredicateComparison]: unable to prove that (exists ((|ldv_zalloc_#t~malloc13#1.base| (_ BitVec 32))) (and (= (select |c_old(#valid)| |ldv_zalloc_#t~malloc13#1.base|) (_ bv0 1)) (= |c_#length| (store |c_old(#length)| |ldv_zalloc_#t~malloc13#1.base| (select |c_#length| |ldv_zalloc_#t~malloc13#1.base|))))) is different from true [2023-11-19 04:17:04,571 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 04:17:04,573 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 14 treesize of output 9 [2023-11-19 04:17:04,586 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2023-11-19 04:17:04,586 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 13 treesize of output 13 [2023-11-19 04:17:04,682 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 04:17:04,682 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 04:17:04,682 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-19 04:17:04,682 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [513008902] [2023-11-19 04:17:04,683 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [513008902] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 04:17:04,683 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 04:17:04,683 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-19 04:17:04,683 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1598476112] [2023-11-19 04:17:04,683 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 04:17:04,684 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-19 04:17:04,684 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-19 04:17:04,684 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-19 04:17:04,685 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=21, Unknown=1, NotChecked=8, Total=42 [2023-11-19 04:17:04,685 INFO L87 Difference]: Start difference. First operand 233 states and 274 transitions. Second operand has 7 states, 5 states have (on average 5.4) internal successors, (27), 6 states have internal predecessors, (27), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-11-19 04:17:05,777 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 04:17:05,777 INFO L93 Difference]: Finished difference Result 282 states and 308 transitions. [2023-11-19 04:17:05,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-19 04:17:05,777 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 5.4) internal successors, (27), 6 states have internal predecessors, (27), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 33 [2023-11-19 04:17:05,778 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 04:17:05,780 INFO L225 Difference]: With dead ends: 282 [2023-11-19 04:17:05,780 INFO L226 Difference]: Without dead ends: 282 [2023-11-19 04:17:05,780 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=37, Unknown=1, NotChecked=12, Total=72 [2023-11-19 04:17:05,781 INFO L413 NwaCegarLoop]: 122 mSDtfsCounter, 172 mSDsluCounter, 268 mSDsCounter, 0 mSdLazyCounter, 406 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 173 SdHoareTripleChecker+Valid, 390 SdHoareTripleChecker+Invalid, 738 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 406 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 314 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-11-19 04:17:05,781 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [173 Valid, 390 Invalid, 738 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 406 Invalid, 0 Unknown, 314 Unchecked, 1.0s Time] [2023-11-19 04:17:05,782 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 282 states. [2023-11-19 04:17:05,788 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 282 to 233. [2023-11-19 04:17:05,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 233 states, 152 states have (on average 1.631578947368421) internal successors, (248), 216 states have internal predecessors, (248), 9 states have call successors, (9), 7 states have call predecessors, (9), 8 states have return successors, (12), 9 states have call predecessors, (12), 9 states have call successors, (12) [2023-11-19 04:17:05,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 233 states to 233 states and 269 transitions. [2023-11-19 04:17:05,791 INFO L78 Accepts]: Start accepts. Automaton has 233 states and 269 transitions. Word has length 33 [2023-11-19 04:17:05,794 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 04:17:05,794 INFO L495 AbstractCegarLoop]: Abstraction has 233 states and 269 transitions. [2023-11-19 04:17:05,795 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 5.4) internal successors, (27), 6 states have internal predecessors, (27), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-11-19 04:17:05,795 INFO L276 IsEmpty]: Start isEmpty. Operand 233 states and 269 transitions. [2023-11-19 04:17:05,797 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2023-11-19 04:17:05,797 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:17:05,798 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 04:17:05,802 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6e0bc21-9aa9-44bb-9610-d639f8583e26/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)] Ended with exit code 0 [2023-11-19 04:17:06,002 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6e0bc21-9aa9-44bb-9610-d639f8583e26/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 04:17:06,003 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr32ASSERT_VIOLATIONMEMORY_FREE === [free_reportsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 76 more)] === [2023-11-19 04:17:06,003 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:17:06,003 INFO L85 PathProgramCache]: Analyzing trace with hash 563151669, now seen corresponding path program 1 times [2023-11-19 04:17:06,003 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-19 04:17:06,004 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [827249775] [2023-11-19 04:17:06,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:17:06,004 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 04:17:06,004 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6e0bc21-9aa9-44bb-9610-d639f8583e26/bin/utaipan-verify-t7M7D8N6sZ/mathsat [2023-11-19 04:17:06,005 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6e0bc21-9aa9-44bb-9610-d639f8583e26/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 04:17:06,027 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6e0bc21-9aa9-44bb-9610-d639f8583e26/bin/utaipan-verify-t7M7D8N6sZ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2023-11-19 04:17:06,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:17:06,182 INFO L262 TraceCheckSpWp]: Trace formula consists of 194 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-19 04:17:06,184 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 04:17:06,677 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 04:17:06,677 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 04:17:06,678 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-19 04:17:06,678 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [827249775] [2023-11-19 04:17:06,678 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [827249775] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 04:17:06,678 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 04:17:06,678 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-19 04:17:06,678 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [884582625] [2023-11-19 04:17:06,678 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 04:17:06,679 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-19 04:17:06,679 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-19 04:17:06,679 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-19 04:17:06,679 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-11-19 04:17:06,680 INFO L87 Difference]: Start difference. First operand 233 states and 269 transitions. Second operand has 8 states, 7 states have (on average 4.285714285714286) internal successors, (30), 6 states have internal predecessors, (30), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-11-19 04:17:07,276 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 04:17:07,276 INFO L93 Difference]: Finished difference Result 231 states and 266 transitions. [2023-11-19 04:17:07,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-19 04:17:07,280 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 4.285714285714286) internal successors, (30), 6 states have internal predecessors, (30), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 36 [2023-11-19 04:17:07,280 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 04:17:07,282 INFO L225 Difference]: With dead ends: 231 [2023-11-19 04:17:07,282 INFO L226 Difference]: Without dead ends: 231 [2023-11-19 04:17:07,282 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2023-11-19 04:17:07,283 INFO L413 NwaCegarLoop]: 172 mSDtfsCounter, 228 mSDsluCounter, 551 mSDsCounter, 0 mSdLazyCounter, 154 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 231 SdHoareTripleChecker+Valid, 723 SdHoareTripleChecker+Invalid, 159 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 154 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-19 04:17:07,283 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [231 Valid, 723 Invalid, 159 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 154 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-19 04:17:07,284 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 231 states. [2023-11-19 04:17:07,289 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 231 to 231. [2023-11-19 04:17:07,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 231 states, 152 states have (on average 1.611842105263158) internal successors, (245), 214 states have internal predecessors, (245), 9 states have call successors, (9), 7 states have call predecessors, (9), 8 states have return successors, (12), 9 states have call predecessors, (12), 9 states have call successors, (12) [2023-11-19 04:17:07,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 231 states to 231 states and 266 transitions. [2023-11-19 04:17:07,292 INFO L78 Accepts]: Start accepts. Automaton has 231 states and 266 transitions. Word has length 36 [2023-11-19 04:17:07,292 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 04:17:07,292 INFO L495 AbstractCegarLoop]: Abstraction has 231 states and 266 transitions. [2023-11-19 04:17:07,292 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 4.285714285714286) internal successors, (30), 6 states have internal predecessors, (30), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-11-19 04:17:07,293 INFO L276 IsEmpty]: Start isEmpty. Operand 231 states and 266 transitions. [2023-11-19 04:17:07,293 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2023-11-19 04:17:07,293 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:17:07,294 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 04:17:07,300 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6e0bc21-9aa9-44bb-9610-d639f8583e26/bin/utaipan-verify-t7M7D8N6sZ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Ended with exit code 0 [2023-11-19 04:17:07,497 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6e0bc21-9aa9-44bb-9610-d639f8583e26/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 04:17:07,497 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONARRAY_INDEX === [free_reportsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 76 more)] === [2023-11-19 04:17:07,498 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:17:07,498 INFO L85 PathProgramCache]: Analyzing trace with hash 563151641, now seen corresponding path program 1 times [2023-11-19 04:17:07,498 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-19 04:17:07,498 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1237720162] [2023-11-19 04:17:07,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:17:07,499 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 04:17:07,499 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6e0bc21-9aa9-44bb-9610-d639f8583e26/bin/utaipan-verify-t7M7D8N6sZ/mathsat [2023-11-19 04:17:07,500 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6e0bc21-9aa9-44bb-9610-d639f8583e26/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 04:17:07,502 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6e0bc21-9aa9-44bb-9610-d639f8583e26/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 04:17:07,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:17:07,671 INFO L262 TraceCheckSpWp]: Trace formula consists of 198 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-19 04:17:07,674 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 04:17:07,699 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 04:17:07,700 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 04:17:07,700 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-19 04:17:07,700 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1237720162] [2023-11-19 04:17:07,700 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1237720162] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 04:17:07,700 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 04:17:07,701 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 04:17:07,701 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1789493628] [2023-11-19 04:17:07,701 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 04:17:07,701 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 04:17:07,702 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-19 04:17:07,702 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 04:17:07,702 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-19 04:17:07,703 INFO L87 Difference]: Start difference. First operand 231 states and 266 transitions. Second operand has 4 states, 4 states have (on average 7.5) internal successors, (30), 4 states have internal predecessors, (30), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2023-11-19 04:17:07,730 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 04:17:07,731 INFO L93 Difference]: Finished difference Result 272 states and 310 transitions. [2023-11-19 04:17:07,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 04:17:07,731 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.5) internal successors, (30), 4 states have internal predecessors, (30), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 36 [2023-11-19 04:17:07,732 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 04:17:07,733 INFO L225 Difference]: With dead ends: 272 [2023-11-19 04:17:07,734 INFO L226 Difference]: Without dead ends: 272 [2023-11-19 04:17:07,734 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-19 04:17:07,735 INFO L413 NwaCegarLoop]: 194 mSDtfsCounter, 36 mSDsluCounter, 383 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 577 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 04:17:07,735 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [37 Valid, 577 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 04:17:07,737 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 272 states. [2023-11-19 04:17:07,744 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 272 to 235. [2023-11-19 04:17:07,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 235 states, 156 states have (on average 1.5961538461538463) internal successors, (249), 218 states have internal predecessors, (249), 9 states have call successors, (9), 7 states have call predecessors, (9), 8 states have return successors, (12), 9 states have call predecessors, (12), 9 states have call successors, (12) [2023-11-19 04:17:07,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 235 states to 235 states and 270 transitions. [2023-11-19 04:17:07,746 INFO L78 Accepts]: Start accepts. Automaton has 235 states and 270 transitions. Word has length 36 [2023-11-19 04:17:07,747 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 04:17:07,747 INFO L495 AbstractCegarLoop]: Abstraction has 235 states and 270 transitions. [2023-11-19 04:17:07,747 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.5) internal successors, (30), 4 states have internal predecessors, (30), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2023-11-19 04:17:07,747 INFO L276 IsEmpty]: Start isEmpty. Operand 235 states and 270 transitions. [2023-11-19 04:17:07,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2023-11-19 04:17:07,749 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:17:07,749 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 04:17:07,760 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6e0bc21-9aa9-44bb-9610-d639f8583e26/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 04:17:07,953 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6e0bc21-9aa9-44bb-9610-d639f8583e26/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 04:17:07,953 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr39ASSERT_VIOLATIONMEMORY_FREE === [free_reportsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 76 more)] === [2023-11-19 04:17:07,953 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:17:07,953 INFO L85 PathProgramCache]: Analyzing trace with hash 515315048, now seen corresponding path program 1 times [2023-11-19 04:17:07,954 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-19 04:17:07,954 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [880952269] [2023-11-19 04:17:07,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:17:07,954 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 04:17:07,954 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6e0bc21-9aa9-44bb-9610-d639f8583e26/bin/utaipan-verify-t7M7D8N6sZ/mathsat [2023-11-19 04:17:07,955 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6e0bc21-9aa9-44bb-9610-d639f8583e26/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 04:17:07,956 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6e0bc21-9aa9-44bb-9610-d639f8583e26/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 04:17:08,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:17:08,121 INFO L262 TraceCheckSpWp]: Trace formula consists of 202 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-19 04:17:08,122 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 04:17:08,138 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 04:17:08,138 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 04:17:08,138 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-19 04:17:08,138 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [880952269] [2023-11-19 04:17:08,139 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [880952269] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 04:17:08,140 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 04:17:08,140 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 04:17:08,140 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [998737160] [2023-11-19 04:17:08,140 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 04:17:08,141 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 04:17:08,141 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-19 04:17:08,142 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 04:17:08,142 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-19 04:17:08,142 INFO L87 Difference]: Start difference. First operand 235 states and 270 transitions. Second operand has 4 states, 4 states have (on average 8.5) internal successors, (34), 4 states have internal predecessors, (34), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2023-11-19 04:17:08,173 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 04:17:08,173 INFO L93 Difference]: Finished difference Result 258 states and 295 transitions. [2023-11-19 04:17:08,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 04:17:08,174 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.5) internal successors, (34), 4 states have internal predecessors, (34), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 40 [2023-11-19 04:17:08,174 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 04:17:08,175 INFO L225 Difference]: With dead ends: 258 [2023-11-19 04:17:08,176 INFO L226 Difference]: Without dead ends: 258 [2023-11-19 04:17:08,178 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-19 04:17:08,179 INFO L413 NwaCegarLoop]: 194 mSDtfsCounter, 23 mSDsluCounter, 382 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 576 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 04:17:08,180 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 576 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 04:17:08,181 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 258 states. [2023-11-19 04:17:08,190 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 258 to 237. [2023-11-19 04:17:08,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 237 states, 158 states have (on average 1.5886075949367089) internal successors, (251), 220 states have internal predecessors, (251), 9 states have call successors, (9), 7 states have call predecessors, (9), 8 states have return successors, (12), 9 states have call predecessors, (12), 9 states have call successors, (12) [2023-11-19 04:17:08,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 237 states to 237 states and 272 transitions. [2023-11-19 04:17:08,193 INFO L78 Accepts]: Start accepts. Automaton has 237 states and 272 transitions. Word has length 40 [2023-11-19 04:17:08,195 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 04:17:08,195 INFO L495 AbstractCegarLoop]: Abstraction has 237 states and 272 transitions. [2023-11-19 04:17:08,195 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.5) internal successors, (34), 4 states have internal predecessors, (34), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2023-11-19 04:17:08,195 INFO L276 IsEmpty]: Start isEmpty. Operand 237 states and 272 transitions. [2023-11-19 04:17:08,196 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2023-11-19 04:17:08,196 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:17:08,196 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 04:17:08,200 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6e0bc21-9aa9-44bb-9610-d639f8583e26/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 04:17:08,399 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6e0bc21-9aa9-44bb-9610-d639f8583e26/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 04:17:08,400 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr42REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [free_reportsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 76 more)] === [2023-11-19 04:17:08,400 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:17:08,400 INFO L85 PathProgramCache]: Analyzing trace with hash 1296596367, now seen corresponding path program 1 times [2023-11-19 04:17:08,400 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-19 04:17:08,400 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [705275126] [2023-11-19 04:17:08,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:17:08,401 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 04:17:08,401 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6e0bc21-9aa9-44bb-9610-d639f8583e26/bin/utaipan-verify-t7M7D8N6sZ/mathsat [2023-11-19 04:17:08,401 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6e0bc21-9aa9-44bb-9610-d639f8583e26/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 04:17:08,403 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6e0bc21-9aa9-44bb-9610-d639f8583e26/bin/utaipan-verify-t7M7D8N6sZ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2023-11-19 04:17:08,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:17:08,643 INFO L262 TraceCheckSpWp]: Trace formula consists of 213 conjuncts, 26 conjunts are in the unsatisfiable core [2023-11-19 04:17:08,647 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 04:17:08,834 INFO L349 Elim1Store]: treesize reduction 24, result has 33.3 percent of original size [2023-11-19 04:17:08,834 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 21 treesize of output 20 [2023-11-19 04:17:09,273 INFO L349 Elim1Store]: treesize reduction 28, result has 45.1 percent of original size [2023-11-19 04:17:09,274 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 23 treesize of output 33 [2023-11-19 04:17:09,551 INFO L349 Elim1Store]: treesize reduction 48, result has 32.4 percent of original size [2023-11-19 04:17:09,552 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 28 treesize of output 36 [2023-11-19 04:17:10,443 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 04:17:10,445 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 04:17:10,446 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 6 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 25 [2023-11-19 04:17:10,483 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 25 [2023-11-19 04:17:10,584 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 04:17:10,584 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 04:17:10,584 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-19 04:17:10,584 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [705275126] [2023-11-19 04:17:10,585 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [705275126] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 04:17:10,585 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 04:17:10,585 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2023-11-19 04:17:10,585 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2086929387] [2023-11-19 04:17:10,585 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 04:17:10,586 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-11-19 04:17:10,586 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-19 04:17:10,586 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-11-19 04:17:10,587 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=193, Unknown=1, NotChecked=0, Total=240 [2023-11-19 04:17:10,587 INFO L87 Difference]: Start difference. First operand 237 states and 272 transitions. Second operand has 16 states, 13 states have (on average 2.769230769230769) internal successors, (36), 14 states have internal predecessors, (36), 3 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-19 04:17:14,684 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 04:17:14,684 INFO L93 Difference]: Finished difference Result 306 states and 344 transitions. [2023-11-19 04:17:14,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-19 04:17:14,685 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 13 states have (on average 2.769230769230769) internal successors, (36), 14 states have internal predecessors, (36), 3 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) Word has length 42 [2023-11-19 04:17:14,685 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 04:17:14,687 INFO L225 Difference]: With dead ends: 306 [2023-11-19 04:17:14,687 INFO L226 Difference]: Without dead ends: 306 [2023-11-19 04:17:14,688 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 109 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=144, Invalid=557, Unknown=1, NotChecked=0, Total=702 [2023-11-19 04:17:14,688 INFO L413 NwaCegarLoop]: 92 mSDtfsCounter, 381 mSDsluCounter, 691 mSDsCounter, 0 mSdLazyCounter, 1099 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 381 SdHoareTripleChecker+Valid, 783 SdHoareTripleChecker+Invalid, 1141 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 1099 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2023-11-19 04:17:14,688 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [381 Valid, 783 Invalid, 1141 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 1099 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2023-11-19 04:17:14,689 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 306 states. [2023-11-19 04:17:14,700 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 306 to 259. [2023-11-19 04:17:14,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 259 states, 178 states have (on average 1.5842696629213484) internal successors, (282), 238 states have internal predecessors, (282), 10 states have call successors, (10), 8 states have call predecessors, (10), 9 states have return successors, (14), 12 states have call predecessors, (14), 10 states have call successors, (14) [2023-11-19 04:17:14,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 259 states to 259 states and 306 transitions. [2023-11-19 04:17:14,703 INFO L78 Accepts]: Start accepts. Automaton has 259 states and 306 transitions. Word has length 42 [2023-11-19 04:17:14,703 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 04:17:14,704 INFO L495 AbstractCegarLoop]: Abstraction has 259 states and 306 transitions. [2023-11-19 04:17:14,704 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 13 states have (on average 2.769230769230769) internal successors, (36), 14 states have internal predecessors, (36), 3 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-19 04:17:14,704 INFO L276 IsEmpty]: Start isEmpty. Operand 259 states and 306 transitions. [2023-11-19 04:17:14,705 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2023-11-19 04:17:14,705 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:17:14,706 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 04:17:14,712 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6e0bc21-9aa9-44bb-9610-d639f8583e26/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)] Forceful destruction successful, exit code 0 [2023-11-19 04:17:14,909 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6e0bc21-9aa9-44bb-9610-d639f8583e26/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 04:17:14,910 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr43REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [free_reportsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 76 more)] === [2023-11-19 04:17:14,910 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:17:14,910 INFO L85 PathProgramCache]: Analyzing trace with hash 1296596368, now seen corresponding path program 1 times [2023-11-19 04:17:14,911 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-19 04:17:14,911 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1904139620] [2023-11-19 04:17:14,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:17:14,911 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 04:17:14,911 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6e0bc21-9aa9-44bb-9610-d639f8583e26/bin/utaipan-verify-t7M7D8N6sZ/mathsat [2023-11-19 04:17:14,912 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6e0bc21-9aa9-44bb-9610-d639f8583e26/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 04:17:14,915 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6e0bc21-9aa9-44bb-9610-d639f8583e26/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 (18)] Waiting until timeout for monitored process [2023-11-19 04:17:15,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:17:15,126 INFO L262 TraceCheckSpWp]: Trace formula consists of 213 conjuncts, 35 conjunts are in the unsatisfiable core [2023-11-19 04:17:15,128 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 04:17:15,330 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 04:17:15,331 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 9 [2023-11-19 04:17:15,366 INFO L349 Elim1Store]: treesize reduction 12, result has 42.9 percent of original size [2023-11-19 04:17:15,366 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 20 treesize of output 22 [2023-11-19 04:17:15,742 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 04:17:15,744 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 14 treesize of output 9 [2023-11-19 04:17:15,953 INFO L349 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2023-11-19 04:17:15,954 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 12 treesize of output 14 [2023-11-19 04:17:16,174 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 04:17:16,174 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 04:17:16,174 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-19 04:17:16,175 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1904139620] [2023-11-19 04:17:16,175 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1904139620] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 04:17:16,175 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 04:17:16,175 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-11-19 04:17:16,175 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [275141706] [2023-11-19 04:17:16,175 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 04:17:16,176 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-19 04:17:16,176 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-19 04:17:16,176 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-19 04:17:16,177 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2023-11-19 04:17:16,177 INFO L87 Difference]: Start difference. First operand 259 states and 306 transitions. Second operand has 12 states, 11 states have (on average 3.272727272727273) internal successors, (36), 9 states have internal predecessors, (36), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-19 04:17:20,401 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 04:17:20,401 INFO L93 Difference]: Finished difference Result 294 states and 334 transitions. [2023-11-19 04:17:20,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-19 04:17:20,402 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 3.272727272727273) internal successors, (36), 9 states have internal predecessors, (36), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) Word has length 42 [2023-11-19 04:17:20,402 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 04:17:20,404 INFO L225 Difference]: With dead ends: 294 [2023-11-19 04:17:20,404 INFO L226 Difference]: Without dead ends: 294 [2023-11-19 04:17:20,404 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 30 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=98, Invalid=364, Unknown=0, NotChecked=0, Total=462 [2023-11-19 04:17:20,405 INFO L413 NwaCegarLoop]: 70 mSDtfsCounter, 401 mSDsluCounter, 433 mSDsCounter, 0 mSdLazyCounter, 1206 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 401 SdHoareTripleChecker+Valid, 503 SdHoareTripleChecker+Invalid, 1256 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 1206 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2023-11-19 04:17:20,405 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [401 Valid, 503 Invalid, 1256 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 1206 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time] [2023-11-19 04:17:20,406 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 294 states. [2023-11-19 04:17:20,412 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 294 to 257. [2023-11-19 04:17:20,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 257 states, 178 states have (on average 1.5617977528089888) internal successors, (278), 236 states have internal predecessors, (278), 10 states have call successors, (10), 8 states have call predecessors, (10), 9 states have return successors, (14), 12 states have call predecessors, (14), 10 states have call successors, (14) [2023-11-19 04:17:20,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 257 states to 257 states and 302 transitions. [2023-11-19 04:17:20,415 INFO L78 Accepts]: Start accepts. Automaton has 257 states and 302 transitions. Word has length 42 [2023-11-19 04:17:20,416 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 04:17:20,416 INFO L495 AbstractCegarLoop]: Abstraction has 257 states and 302 transitions. [2023-11-19 04:17:20,416 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 3.272727272727273) internal successors, (36), 9 states have internal predecessors, (36), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-19 04:17:20,416 INFO L276 IsEmpty]: Start isEmpty. Operand 257 states and 302 transitions. [2023-11-19 04:17:20,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2023-11-19 04:17:20,417 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:17:20,417 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 04:17:20,422 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6e0bc21-9aa9-44bb-9610-d639f8583e26/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 (18)] Forceful destruction successful, exit code 0 [2023-11-19 04:17:20,621 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6e0bc21-9aa9-44bb-9610-d639f8583e26/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 04:17:20,622 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr49ASSERT_VIOLATIONMEMORY_LEAK === [free_reportsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 76 more)] === [2023-11-19 04:17:20,622 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:17:20,622 INFO L85 PathProgramCache]: Analyzing trace with hash 1539801826, now seen corresponding path program 1 times [2023-11-19 04:17:20,623 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-19 04:17:20,623 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1914051168] [2023-11-19 04:17:20,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:17:20,624 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 04:17:20,624 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6e0bc21-9aa9-44bb-9610-d639f8583e26/bin/utaipan-verify-t7M7D8N6sZ/mathsat [2023-11-19 04:17:20,625 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6e0bc21-9aa9-44bb-9610-d639f8583e26/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 04:17:20,667 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6e0bc21-9aa9-44bb-9610-d639f8583e26/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 04:17:20,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:17:20,807 INFO L262 TraceCheckSpWp]: Trace formula consists of 206 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-19 04:17:20,809 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 04:17:20,823 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 04:17:20,823 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 04:17:20,824 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-19 04:17:20,824 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1914051168] [2023-11-19 04:17:20,824 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1914051168] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 04:17:20,824 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 04:17:20,824 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 04:17:20,825 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [731683310] [2023-11-19 04:17:20,825 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 04:17:20,825 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 04:17:20,825 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-19 04:17:20,826 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 04:17:20,826 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-19 04:17:20,826 INFO L87 Difference]: Start difference. First operand 257 states and 302 transitions. Second operand has 4 states, 4 states have (on average 9.25) internal successors, (37), 4 states have internal predecessors, (37), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2023-11-19 04:17:20,860 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 04:17:20,860 INFO L93 Difference]: Finished difference Result 277 states and 322 transitions. [2023-11-19 04:17:20,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-19 04:17:20,861 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 9.25) internal successors, (37), 4 states have internal predecessors, (37), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 43 [2023-11-19 04:17:20,862 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 04:17:20,863 INFO L225 Difference]: With dead ends: 277 [2023-11-19 04:17:20,864 INFO L226 Difference]: Without dead ends: 277 [2023-11-19 04:17:20,864 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-19 04:17:20,865 INFO L413 NwaCegarLoop]: 193 mSDtfsCounter, 43 mSDsluCounter, 366 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 559 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 04:17:20,865 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [44 Valid, 559 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 04:17:20,867 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 277 states. [2023-11-19 04:17:20,874 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 277 to 259. [2023-11-19 04:17:20,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 259 states, 180 states have (on average 1.55) internal successors, (279), 238 states have internal predecessors, (279), 10 states have call successors, (10), 8 states have call predecessors, (10), 9 states have return successors, (14), 12 states have call predecessors, (14), 10 states have call successors, (14) [2023-11-19 04:17:20,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 259 states to 259 states and 303 transitions. [2023-11-19 04:17:20,877 INFO L78 Accepts]: Start accepts. Automaton has 259 states and 303 transitions. Word has length 43 [2023-11-19 04:17:20,878 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 04:17:20,878 INFO L495 AbstractCegarLoop]: Abstraction has 259 states and 303 transitions. [2023-11-19 04:17:20,878 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.25) internal successors, (37), 4 states have internal predecessors, (37), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2023-11-19 04:17:20,878 INFO L276 IsEmpty]: Start isEmpty. Operand 259 states and 303 transitions. [2023-11-19 04:17:20,879 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2023-11-19 04:17:20,879 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:17:20,879 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 04:17:20,887 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6e0bc21-9aa9-44bb-9610-d639f8583e26/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)] Forceful destruction successful, exit code 0 [2023-11-19 04:17:21,083 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6e0bc21-9aa9-44bb-9610-d639f8583e26/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 04:17:21,083 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONARRAY_INDEX === [free_reportsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 76 more)] === [2023-11-19 04:17:21,084 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:17:21,084 INFO L85 PathProgramCache]: Analyzing trace with hash -1878560601, now seen corresponding path program 1 times [2023-11-19 04:17:21,084 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-19 04:17:21,084 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1332955896] [2023-11-19 04:17:21,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:17:21,084 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 04:17:21,085 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6e0bc21-9aa9-44bb-9610-d639f8583e26/bin/utaipan-verify-t7M7D8N6sZ/mathsat [2023-11-19 04:17:21,086 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6e0bc21-9aa9-44bb-9610-d639f8583e26/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 04:17:21,119 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6e0bc21-9aa9-44bb-9610-d639f8583e26/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 (20)] Waiting until timeout for monitored process [2023-11-19 04:17:21,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:17:21,410 INFO L262 TraceCheckSpWp]: Trace formula consists of 289 conjuncts, 15 conjunts are in the unsatisfiable core [2023-11-19 04:17:21,413 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 04:17:21,445 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 04:17:21,446 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 04:17:21,448 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 04:17:21,449 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-19 04:17:21,450 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-19 04:17:21,450 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-19 04:17:21,459 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 39 [2023-11-19 04:17:21,571 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 04:17:21,573 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 04:17:21,575 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 04:17:21,576 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 04:17:21,578 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 04:17:21,579 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 04:17:21,581 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 04:17:21,585 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 28 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 71 treesize of output 91 [2023-11-19 04:17:23,798 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 04:17:23,801 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 04:17:23,803 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 04:17:23,804 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 04:17:23,806 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 04:17:23,807 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 04:17:23,809 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 04:17:23,810 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 04:17:23,812 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 04:17:23,814 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 04:17:23,815 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 04:17:23,822 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 66 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 0 case distinctions, treesize of input 131 treesize of output 103 [2023-11-19 04:17:23,973 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-19 04:17:23,974 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 111 treesize of output 143 [2023-11-19 04:17:28,407 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-19 04:17:28,407 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 12 select indices, 12 select index equivalence classes, 0 disjoint index pairs (out of 66 index pairs), introduced 12 new quantified variables, introduced 66 case distinctions, treesize of input 150 treesize of output 58 [2023-11-19 04:17:28,436 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 04:17:28,436 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 04:17:28,436 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-19 04:17:28,436 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1332955896] [2023-11-19 04:17:28,436 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1332955896] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 04:17:28,436 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 04:17:28,437 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-19 04:17:28,437 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2048999655] [2023-11-19 04:17:28,437 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 04:17:28,437 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-19 04:17:28,437 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-19 04:17:28,438 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-19 04:17:28,438 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=25, Unknown=3, NotChecked=0, Total=42 [2023-11-19 04:17:28,439 INFO L87 Difference]: Start difference. First operand 259 states and 303 transitions. Second operand has 7 states, 6 states have (on average 6.333333333333333) internal successors, (38), 7 states have internal predecessors, (38), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2023-11-19 04:17:30,566 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-19 04:17:32,569 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-19 04:17:34,585 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0]