./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/pthread-memsafety/list1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 30e01a73 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_a7ab65aa-9c5a-4ee5-bca2-2f2ed1171530/bin/utaipan-verify-mE87zJ7Ire/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7ab65aa-9c5a-4ee5-bca2-2f2ed1171530/bin/utaipan-verify-mE87zJ7Ire/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7ab65aa-9c5a-4ee5-bca2-2f2ed1171530/bin/utaipan-verify-mE87zJ7Ire/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7ab65aa-9c5a-4ee5-bca2-2f2ed1171530/bin/utaipan-verify-mE87zJ7Ire/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/pthread-memsafety/list1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7ab65aa-9c5a-4ee5-bca2-2f2ed1171530/bin/utaipan-verify-mE87zJ7Ire/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7ab65aa-9c5a-4ee5-bca2-2f2ed1171530/bin/utaipan-verify-mE87zJ7Ire --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 1da30149a66945688e686f90b0d1749d09e30bdcfdeae7b4325d99ddbe3a8206 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-30e01a7 [2023-11-23 21:08:04,109 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-23 21:08:04,229 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7ab65aa-9c5a-4ee5-bca2-2f2ed1171530/bin/utaipan-verify-mE87zJ7Ire/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2023-11-23 21:08:04,236 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-23 21:08:04,237 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-23 21:08:04,278 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-23 21:08:04,279 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-23 21:08:04,279 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-23 21:08:04,280 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-23 21:08:04,285 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-23 21:08:04,286 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-23 21:08:04,287 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-23 21:08:04,288 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-23 21:08:04,289 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-23 21:08:04,290 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-23 21:08:04,290 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-23 21:08:04,291 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-23 21:08:04,291 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-23 21:08:04,292 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-23 21:08:04,292 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-23 21:08:04,293 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-23 21:08:04,293 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-23 21:08:04,294 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-23 21:08:04,294 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-23 21:08:04,295 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-23 21:08:04,296 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-23 21:08:04,296 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-23 21:08:04,297 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-23 21:08:04,297 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-23 21:08:04,298 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-23 21:08:04,299 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-23 21:08:04,299 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-23 21:08:04,310 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-23 21:08:04,311 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-23 21:08:04,311 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-23 21:08:04,311 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-23 21:08:04,312 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-23 21:08:04,312 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-23 21:08:04,312 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-23 21:08:04,313 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-23 21:08:04,313 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 21:08:04,313 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-23 21:08:04,313 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-23 21:08:04,314 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-23 21:08:04,314 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-23 21:08:04,314 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-23 21:08:04,315 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-23 21:08:04,315 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-23 21:08:04,315 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_a7ab65aa-9c5a-4ee5-bca2-2f2ed1171530/bin/utaipan-verify-mE87zJ7Ire/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7ab65aa-9c5a-4ee5-bca2-2f2ed1171530/bin/utaipan-verify-mE87zJ7Ire Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1da30149a66945688e686f90b0d1749d09e30bdcfdeae7b4325d99ddbe3a8206 [2023-11-23 21:08:04,669 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-23 21:08:04,693 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-23 21:08:04,696 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-23 21:08:04,698 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-23 21:08:04,698 INFO L274 PluginConnector]: CDTParser initialized [2023-11-23 21:08:04,700 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7ab65aa-9c5a-4ee5-bca2-2f2ed1171530/bin/utaipan-verify-mE87zJ7Ire/../../sv-benchmarks/c/pthread-memsafety/list1.i [2023-11-23 21:08:07,713 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-23 21:08:08,108 INFO L384 CDTParser]: Found 1 translation units. [2023-11-23 21:08:08,109 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7ab65aa-9c5a-4ee5-bca2-2f2ed1171530/sv-benchmarks/c/pthread-memsafety/list1.i [2023-11-23 21:08:08,133 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7ab65aa-9c5a-4ee5-bca2-2f2ed1171530/bin/utaipan-verify-mE87zJ7Ire/data/de5a218c9/eeae9d19151b4c2f857c0b2482048b1a/FLAG765b82714 [2023-11-23 21:08:08,151 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7ab65aa-9c5a-4ee5-bca2-2f2ed1171530/bin/utaipan-verify-mE87zJ7Ire/data/de5a218c9/eeae9d19151b4c2f857c0b2482048b1a [2023-11-23 21:08:08,157 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-23 21:08:08,159 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-23 21:08:08,162 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-23 21:08:08,163 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-23 21:08:08,168 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-23 21:08:08,169 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 09:08:08" (1/1) ... [2023-11-23 21:08:08,171 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@39910bab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:08:08, skipping insertion in model container [2023-11-23 21:08:08,171 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 09:08:08" (1/1) ... [2023-11-23 21:08:08,240 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-23 21:08:08,758 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 21:08:08,773 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) [2023-11-23 21:08:08,774 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@34a660df and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:08:08, skipping insertion in model container [2023-11-23 21:08:08,774 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-23 21:08:08,775 INFO L186 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2023-11-23 21:08:08,777 INFO L158 Benchmark]: Toolchain (without parser) took 616.95ms. Allocated memory is still 123.7MB. Free memory was 78.5MB in the beginning and 64.3MB in the end (delta: 14.2MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2023-11-23 21:08:08,777 INFO L158 Benchmark]: CDTParser took 0.31ms. Allocated memory is still 123.7MB. Free memory is still 94.8MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-23 21:08:08,778 INFO L158 Benchmark]: CACSL2BoogieTranslator took 612.23ms. Allocated memory is still 123.7MB. Free memory was 78.5MB in the beginning and 64.7MB in the end (delta: 13.8MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2023-11-23 21:08:08,780 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.31ms. Allocated memory is still 123.7MB. Free memory is still 94.8MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 612.23ms. Allocated memory is still 123.7MB. Free memory was 78.5MB in the beginning and 64.7MB in the end (delta: 13.8MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 1048]: 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_a7ab65aa-9c5a-4ee5-bca2-2f2ed1171530/bin/utaipan-verify-mE87zJ7Ire/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7ab65aa-9c5a-4ee5-bca2-2f2ed1171530/bin/utaipan-verify-mE87zJ7Ire/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7ab65aa-9c5a-4ee5-bca2-2f2ed1171530/bin/utaipan-verify-mE87zJ7Ire/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7ab65aa-9c5a-4ee5-bca2-2f2ed1171530/bin/utaipan-verify-mE87zJ7Ire/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/pthread-memsafety/list1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7ab65aa-9c5a-4ee5-bca2-2f2ed1171530/bin/utaipan-verify-mE87zJ7Ire/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7ab65aa-9c5a-4ee5-bca2-2f2ed1171530/bin/utaipan-verify-mE87zJ7Ire --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 1da30149a66945688e686f90b0d1749d09e30bdcfdeae7b4325d99ddbe3a8206 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-30e01a7 [2023-11-23 21:08:11,371 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-23 21:08:11,507 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7ab65aa-9c5a-4ee5-bca2-2f2ed1171530/bin/utaipan-verify-mE87zJ7Ire/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf [2023-11-23 21:08:11,516 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-23 21:08:11,517 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-23 21:08:11,567 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-23 21:08:11,568 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-23 21:08:11,569 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-23 21:08:11,570 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-23 21:08:11,575 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-23 21:08:11,576 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-23 21:08:11,577 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-23 21:08:11,577 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-23 21:08:11,579 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-23 21:08:11,580 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-23 21:08:11,580 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-23 21:08:11,581 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-23 21:08:11,582 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-23 21:08:11,583 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-23 21:08:11,583 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-23 21:08:11,584 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-23 21:08:11,584 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-23 21:08:11,585 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-23 21:08:11,586 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-23 21:08:11,586 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-23 21:08:11,587 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-23 21:08:11,587 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-23 21:08:11,588 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-23 21:08:11,588 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-11-23 21:08:11,589 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-11-23 21:08:11,590 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-23 21:08:11,590 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-23 21:08:11,591 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-23 21:08:11,591 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-23 21:08:11,592 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-23 21:08:11,592 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-23 21:08:11,593 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-23 21:08:11,593 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 21:08:11,594 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-23 21:08:11,594 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-23 21:08:11,595 INFO L153 SettingsManager]: * Trace refinement strategy=WALRUS [2023-11-23 21:08:11,595 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-11-23 21:08:11,595 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-23 21:08:11,596 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-23 21:08:11,596 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-23 21:08:11,597 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_a7ab65aa-9c5a-4ee5-bca2-2f2ed1171530/bin/utaipan-verify-mE87zJ7Ire/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7ab65aa-9c5a-4ee5-bca2-2f2ed1171530/bin/utaipan-verify-mE87zJ7Ire Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1da30149a66945688e686f90b0d1749d09e30bdcfdeae7b4325d99ddbe3a8206 [2023-11-23 21:08:12,013 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-23 21:08:12,041 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-23 21:08:12,044 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-23 21:08:12,045 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-23 21:08:12,046 INFO L274 PluginConnector]: CDTParser initialized [2023-11-23 21:08:12,047 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7ab65aa-9c5a-4ee5-bca2-2f2ed1171530/bin/utaipan-verify-mE87zJ7Ire/../../sv-benchmarks/c/pthread-memsafety/list1.i [2023-11-23 21:08:15,382 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-23 21:08:15,777 INFO L384 CDTParser]: Found 1 translation units. [2023-11-23 21:08:15,778 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7ab65aa-9c5a-4ee5-bca2-2f2ed1171530/sv-benchmarks/c/pthread-memsafety/list1.i [2023-11-23 21:08:15,800 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7ab65aa-9c5a-4ee5-bca2-2f2ed1171530/bin/utaipan-verify-mE87zJ7Ire/data/e4dff9884/8672245a8f784be1bf468e1b70668efd/FLAG8aeffe00b [2023-11-23 21:08:15,815 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7ab65aa-9c5a-4ee5-bca2-2f2ed1171530/bin/utaipan-verify-mE87zJ7Ire/data/e4dff9884/8672245a8f784be1bf468e1b70668efd [2023-11-23 21:08:15,817 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-23 21:08:15,819 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-23 21:08:15,821 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-23 21:08:15,821 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-23 21:08:15,826 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-23 21:08:15,827 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 09:08:15" (1/1) ... [2023-11-23 21:08:15,828 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@48284971 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:08:15, skipping insertion in model container [2023-11-23 21:08:15,828 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 09:08:15" (1/1) ... [2023-11-23 21:08:15,892 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-23 21:08:16,511 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 21:08:16,539 INFO L199 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2023-11-23 21:08:16,553 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-23 21:08:16,611 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 21:08:16,621 INFO L202 MainTranslator]: Completed pre-run [2023-11-23 21:08:16,689 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 21:08:16,787 INFO L206 MainTranslator]: Completed translation [2023-11-23 21:08:16,787 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:08:16 WrapperNode [2023-11-23 21:08:16,787 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-23 21:08:16,789 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-23 21:08:16,789 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-23 21:08:16,789 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-23 21:08:16,796 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:08:16" (1/1) ... [2023-11-23 21:08:16,819 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:08:16" (1/1) ... [2023-11-23 21:08:16,844 INFO L138 Inliner]: procedures = 267, calls = 33, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 73 [2023-11-23 21:08:16,844 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-23 21:08:16,845 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-23 21:08:16,845 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-23 21:08:16,846 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-23 21:08:16,875 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:08:16" (1/1) ... [2023-11-23 21:08:16,875 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:08:16" (1/1) ... [2023-11-23 21:08:16,880 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:08:16" (1/1) ... [2023-11-23 21:08:16,880 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:08:16" (1/1) ... [2023-11-23 21:08:16,893 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:08:16" (1/1) ... [2023-11-23 21:08:16,896 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:08:16" (1/1) ... [2023-11-23 21:08:16,899 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:08:16" (1/1) ... [2023-11-23 21:08:16,901 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:08:16" (1/1) ... [2023-11-23 21:08:16,906 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-23 21:08:16,907 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-23 21:08:16,907 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-23 21:08:16,907 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-23 21:08:16,908 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:08:16" (1/1) ... [2023-11-23 21:08:16,914 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 21:08:16,939 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7ab65aa-9c5a-4ee5-bca2-2f2ed1171530/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 21:08:16,950 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7ab65aa-9c5a-4ee5-bca2-2f2ed1171530/bin/utaipan-verify-mE87zJ7Ire/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-23 21:08:16,952 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7ab65aa-9c5a-4ee5-bca2-2f2ed1171530/bin/utaipan-verify-mE87zJ7Ire/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-23 21:08:16,982 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2023-11-23 21:08:16,982 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-23 21:08:16,982 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-23 21:08:16,982 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2023-11-23 21:08:16,982 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-23 21:08:16,982 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-11-23 21:08:16,983 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-23 21:08:16,983 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-23 21:08:16,983 INFO L130 BoogieDeclarations]: Found specification of procedure delete [2023-11-23 21:08:16,983 INFO L138 BoogieDeclarations]: Found implementation of procedure delete [2023-11-23 21:08:16,983 INFO L130 BoogieDeclarations]: Found specification of procedure build [2023-11-23 21:08:16,984 INFO L138 BoogieDeclarations]: Found implementation of procedure build [2023-11-23 21:08:16,984 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-23 21:08:16,984 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-23 21:08:16,985 WARN L213 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-23 21:08:17,175 INFO L241 CfgBuilder]: Building ICFG [2023-11-23 21:08:17,178 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-23 21:08:17,630 INFO L282 CfgBuilder]: Performing block encoding [2023-11-23 21:08:17,780 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-23 21:08:17,781 INFO L309 CfgBuilder]: Removed 2 assume(true) statements. [2023-11-23 21:08:17,781 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 09:08:17 BoogieIcfgContainer [2023-11-23 21:08:17,782 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-23 21:08:17,784 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-23 21:08:17,786 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-23 21:08:17,789 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-23 21:08:17,790 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 09:08:15" (1/3) ... [2023-11-23 21:08:17,791 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@52cdbcec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 09:08:17, skipping insertion in model container [2023-11-23 21:08:17,792 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:08:16" (2/3) ... [2023-11-23 21:08:17,794 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@52cdbcec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 09:08:17, skipping insertion in model container [2023-11-23 21:08:17,794 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 09:08:17" (3/3) ... [2023-11-23 21:08:17,796 INFO L112 eAbstractionObserver]: Analyzing ICFG list1.i [2023-11-23 21:08:17,816 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-23 21:08:17,816 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 38 error locations. [2023-11-23 21:08:17,816 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-23 21:08:17,999 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-11-23 21:08:18,045 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 88 places, 86 transitions, 186 flow [2023-11-23 21:08:18,112 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 303 states, 207 states have (on average 2.6618357487922704) internal successors, (551), 302 states have internal predecessors, (551), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:08:18,135 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-23 21:08:18,141 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;@52db477e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-23 21:08:18,141 INFO L358 AbstractCegarLoop]: Starting to check reachability of 69 error locations. [2023-11-23 21:08:18,145 INFO L276 IsEmpty]: Start isEmpty. Operand has 303 states, 207 states have (on average 2.6618357487922704) internal successors, (551), 302 states have internal predecessors, (551), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:08:18,151 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2023-11-23 21:08:18,151 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:08:18,152 INFO L195 NwaCegarLoop]: trace histogram [1, 1] [2023-11-23 21:08:18,153 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [buildErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, buildErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, buildErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 66 more)] === [2023-11-23 21:08:18,158 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:08:18,158 INFO L85 PathProgramCache]: Analyzing trace with hash 9844, now seen corresponding path program 1 times [2023-11-23 21:08:18,172 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-23 21:08:18,173 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1142102213] [2023-11-23 21:08:18,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:08:18,174 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 [2023-11-23 21:08:18,174 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7ab65aa-9c5a-4ee5-bca2-2f2ed1171530/bin/utaipan-verify-mE87zJ7Ire/mathsat [2023-11-23 21:08:18,177 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7ab65aa-9c5a-4ee5-bca2-2f2ed1171530/bin/utaipan-verify-mE87zJ7Ire/mathsat -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) [2023-11-23 21:08:18,220 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7ab65aa-9c5a-4ee5-bca2-2f2ed1171530/bin/utaipan-verify-mE87zJ7Ire/mathsat -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 [2023-11-23 21:08:18,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:08:18,301 INFO L262 TraceCheckSpWp]: Trace formula consists of 29 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-23 21:08:18,306 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:08:18,404 INFO L349 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2023-11-23 21:08:18,405 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 1 case distinctions, treesize of input 9 treesize of output 15 [2023-11-23 21:08:18,433 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:08:18,433 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 21:08:18,434 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-23 21:08:18,435 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1142102213] [2023-11-23 21:08:18,436 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1142102213] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:08:18,437 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:08:18,438 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-23 21:08:18,439 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1238949236] [2023-11-23 21:08:18,440 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:08:18,445 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 21:08:18,446 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-23 21:08:18,479 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 21:08:18,480 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 21:08:18,483 INFO L87 Difference]: Start difference. First operand has 303 states, 207 states have (on average 2.6618357487922704) internal successors, (551), 302 states have internal predecessors, (551), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:08:18,758 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:08:18,759 INFO L93 Difference]: Finished difference Result 331 states and 591 transitions. [2023-11-23 21:08:18,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:08:18,761 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 2 [2023-11-23 21:08:18,762 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:08:18,776 INFO L225 Difference]: With dead ends: 331 [2023-11-23 21:08:18,776 INFO L226 Difference]: Without dead ends: 331 [2023-11-23 21:08:18,777 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 21:08:18,781 INFO L413 NwaCegarLoop]: 30 mSDtfsCounter, 66 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 64 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 66 SdHoareTripleChecker+Valid, 41 SdHoareTripleChecker+Invalid, 68 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 64 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-23 21:08:18,783 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [66 Valid, 41 Invalid, 68 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 64 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-23 21:08:18,819 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 331 states. [2023-11-23 21:08:18,879 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 331 to 275. [2023-11-23 21:08:18,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 275 states, 195 states have (on average 2.5128205128205128) internal successors, (490), 274 states have internal predecessors, (490), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:08:18,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 275 states to 275 states and 490 transitions. [2023-11-23 21:08:18,893 INFO L78 Accepts]: Start accepts. Automaton has 275 states and 490 transitions. Word has length 2 [2023-11-23 21:08:18,893 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:08:18,893 INFO L495 AbstractCegarLoop]: Abstraction has 275 states and 490 transitions. [2023-11-23 21:08:18,894 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:08:18,895 INFO L276 IsEmpty]: Start isEmpty. Operand 275 states and 490 transitions. [2023-11-23 21:08:18,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2023-11-23 21:08:18,896 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:08:18,896 INFO L195 NwaCegarLoop]: trace histogram [1, 1] [2023-11-23 21:08:18,907 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7ab65aa-9c5a-4ee5-bca2-2f2ed1171530/bin/utaipan-verify-mE87zJ7Ire/mathsat -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 [2023-11-23 21:08:19,101 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7ab65aa-9c5a-4ee5-bca2-2f2ed1171530/bin/utaipan-verify-mE87zJ7Ire/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-23 21:08:19,101 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [buildErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, buildErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, buildErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 66 more)] === [2023-11-23 21:08:19,102 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:08:19,102 INFO L85 PathProgramCache]: Analyzing trace with hash 9845, now seen corresponding path program 1 times [2023-11-23 21:08:19,103 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-23 21:08:19,103 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1101833170] [2023-11-23 21:08:19,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:08:19,104 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 [2023-11-23 21:08:19,104 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7ab65aa-9c5a-4ee5-bca2-2f2ed1171530/bin/utaipan-verify-mE87zJ7Ire/mathsat [2023-11-23 21:08:19,105 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7ab65aa-9c5a-4ee5-bca2-2f2ed1171530/bin/utaipan-verify-mE87zJ7Ire/mathsat -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) [2023-11-23 21:08:19,115 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7ab65aa-9c5a-4ee5-bca2-2f2ed1171530/bin/utaipan-verify-mE87zJ7Ire/mathsat -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 [2023-11-23 21:08:19,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:08:19,211 INFO L262 TraceCheckSpWp]: Trace formula consists of 29 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-23 21:08:19,212 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:08:19,245 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-23 21:08:19,249 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 5 [2023-11-23 21:08:19,268 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2023-11-23 21:08:19,288 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:08:19,289 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 21:08:19,289 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-23 21:08:19,289 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1101833170] [2023-11-23 21:08:19,289 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1101833170] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:08:19,290 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:08:19,290 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-23 21:08:19,290 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [245933740] [2023-11-23 21:08:19,290 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:08:19,291 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 21:08:19,292 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-23 21:08:19,292 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 21:08:19,293 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 21:08:19,293 INFO L87 Difference]: Start difference. First operand 275 states and 490 transitions. Second operand has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:08:19,546 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:08:19,546 INFO L93 Difference]: Finished difference Result 276 states and 492 transitions. [2023-11-23 21:08:19,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:08:19,548 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 2 [2023-11-23 21:08:19,548 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:08:19,551 INFO L225 Difference]: With dead ends: 276 [2023-11-23 21:08:19,551 INFO L226 Difference]: Without dead ends: 276 [2023-11-23 21:08:19,551 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 21:08:19,553 INFO L413 NwaCegarLoop]: 51 mSDtfsCounter, 4 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 71 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 83 SdHoareTripleChecker+Invalid, 73 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 71 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-23 21:08:19,553 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 83 Invalid, 73 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 71 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-23 21:08:19,555 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 276 states. [2023-11-23 21:08:19,581 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 276 to 275. [2023-11-23 21:08:19,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 275 states, 196 states have (on average 2.5051020408163267) internal successors, (491), 274 states have internal predecessors, (491), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:08:19,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 275 states to 275 states and 491 transitions. [2023-11-23 21:08:19,584 INFO L78 Accepts]: Start accepts. Automaton has 275 states and 491 transitions. Word has length 2 [2023-11-23 21:08:19,584 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:08:19,585 INFO L495 AbstractCegarLoop]: Abstraction has 275 states and 491 transitions. [2023-11-23 21:08:19,586 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:08:19,587 INFO L276 IsEmpty]: Start isEmpty. Operand 275 states and 491 transitions. [2023-11-23 21:08:19,590 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2023-11-23 21:08:19,590 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:08:19,591 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2023-11-23 21:08:19,598 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7ab65aa-9c5a-4ee5-bca2-2f2ed1171530/bin/utaipan-verify-mE87zJ7Ire/mathsat -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)] Ended with exit code 0 [2023-11-23 21:08:19,793 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7ab65aa-9c5a-4ee5-bca2-2f2ed1171530/bin/utaipan-verify-mE87zJ7Ire/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-23 21:08:19,793 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting buildErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [buildErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, buildErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, buildErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 66 more)] === [2023-11-23 21:08:19,794 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:08:19,794 INFO L85 PathProgramCache]: Analyzing trace with hash 512103736, now seen corresponding path program 1 times [2023-11-23 21:08:19,794 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-23 21:08:19,795 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1449991472] [2023-11-23 21:08:19,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:08:19,795 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 [2023-11-23 21:08:19,795 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7ab65aa-9c5a-4ee5-bca2-2f2ed1171530/bin/utaipan-verify-mE87zJ7Ire/mathsat [2023-11-23 21:08:19,800 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7ab65aa-9c5a-4ee5-bca2-2f2ed1171530/bin/utaipan-verify-mE87zJ7Ire/mathsat -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) [2023-11-23 21:08:19,860 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7ab65aa-9c5a-4ee5-bca2-2f2ed1171530/bin/utaipan-verify-mE87zJ7Ire/mathsat -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 [2023-11-23 21:08:19,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:08:19,989 INFO L262 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-23 21:08:19,991 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:08:19,997 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 [2023-11-23 21:08:20,037 INFO L349 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2023-11-23 21:08:20,038 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 [2023-11-23 21:08:20,060 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:08:20,060 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 21:08:20,060 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-23 21:08:20,060 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1449991472] [2023-11-23 21:08:20,060 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1449991472] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:08:20,061 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:08:20,061 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-23 21:08:20,061 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1555894893] [2023-11-23 21:08:20,061 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:08:20,061 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-23 21:08:20,062 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-23 21:08:20,063 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-23 21:08:20,064 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-23 21:08:20,064 INFO L87 Difference]: Start difference. First operand 275 states and 491 transitions. Second operand has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:08:20,431 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:08:20,431 INFO L93 Difference]: Finished difference Result 323 states and 578 transitions. [2023-11-23 21:08:20,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-23 21:08:20,432 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2023-11-23 21:08:20,432 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:08:20,435 INFO L225 Difference]: With dead ends: 323 [2023-11-23 21:08:20,435 INFO L226 Difference]: Without dead ends: 323 [2023-11-23 21:08:20,435 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-23 21:08:20,437 INFO L413 NwaCegarLoop]: 31 mSDtfsCounter, 84 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 106 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 84 SdHoareTripleChecker+Valid, 63 SdHoareTripleChecker+Invalid, 110 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 106 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-23 21:08:20,437 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [84 Valid, 63 Invalid, 110 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 106 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-23 21:08:20,439 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 323 states. [2023-11-23 21:08:20,447 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 323 to 267. [2023-11-23 21:08:20,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 267 states, 192 states have (on average 2.484375) internal successors, (477), 266 states have internal predecessors, (477), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:08:20,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 267 states to 267 states and 477 transitions. [2023-11-23 21:08:20,450 INFO L78 Accepts]: Start accepts. Automaton has 267 states and 477 transitions. Word has length 6 [2023-11-23 21:08:20,450 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:08:20,450 INFO L495 AbstractCegarLoop]: Abstraction has 267 states and 477 transitions. [2023-11-23 21:08:20,450 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:08:20,451 INFO L276 IsEmpty]: Start isEmpty. Operand 267 states and 477 transitions. [2023-11-23 21:08:20,451 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2023-11-23 21:08:20,451 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:08:20,451 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2023-11-23 21:08:20,460 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7ab65aa-9c5a-4ee5-bca2-2f2ed1171530/bin/utaipan-verify-mE87zJ7Ire/mathsat -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 [2023-11-23 21:08:20,654 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7ab65aa-9c5a-4ee5-bca2-2f2ed1171530/bin/utaipan-verify-mE87zJ7Ire/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-23 21:08:20,655 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting buildErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [buildErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, buildErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, buildErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 66 more)] === [2023-11-23 21:08:20,655 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:08:20,655 INFO L85 PathProgramCache]: Analyzing trace with hash 512103737, now seen corresponding path program 1 times [2023-11-23 21:08:20,656 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-23 21:08:20,656 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [672852417] [2023-11-23 21:08:20,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:08:20,656 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 [2023-11-23 21:08:20,657 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7ab65aa-9c5a-4ee5-bca2-2f2ed1171530/bin/utaipan-verify-mE87zJ7Ire/mathsat [2023-11-23 21:08:20,661 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7ab65aa-9c5a-4ee5-bca2-2f2ed1171530/bin/utaipan-verify-mE87zJ7Ire/mathsat -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) [2023-11-23 21:08:20,665 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7ab65aa-9c5a-4ee5-bca2-2f2ed1171530/bin/utaipan-verify-mE87zJ7Ire/mathsat -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 [2023-11-23 21:08:20,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:08:20,807 INFO L262 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-23 21:08:20,809 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:08:20,822 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 [2023-11-23 21:08:20,831 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 [2023-11-23 21:08:20,916 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-23 21:08:20,917 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 [2023-11-23 21:08:20,934 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2023-11-23 21:08:20,935 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 [2023-11-23 21:08:20,947 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:08:20,947 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 21:08:20,948 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-23 21:08:20,948 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [672852417] [2023-11-23 21:08:20,948 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [672852417] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:08:20,948 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:08:20,948 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-23 21:08:20,949 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1570478394] [2023-11-23 21:08:20,949 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:08:20,949 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-23 21:08:20,949 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-23 21:08:20,950 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-23 21:08:20,950 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-23 21:08:20,950 INFO L87 Difference]: Start difference. First operand 267 states and 477 transitions. Second operand has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:08:21,353 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:08:21,353 INFO L93 Difference]: Finished difference Result 335 states and 599 transitions. [2023-11-23 21:08:21,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-23 21:08:21,354 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2023-11-23 21:08:21,354 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:08:21,356 INFO L225 Difference]: With dead ends: 335 [2023-11-23 21:08:21,357 INFO L226 Difference]: Without dead ends: 335 [2023-11-23 21:08:21,357 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-23 21:08:21,358 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 81 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 132 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 81 SdHoareTripleChecker+Valid, 46 SdHoareTripleChecker+Invalid, 135 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 132 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-23 21:08:21,358 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [81 Valid, 46 Invalid, 135 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 132 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-23 21:08:21,360 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 335 states. [2023-11-23 21:08:21,367 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 335 to 271. [2023-11-23 21:08:21,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 271 states, 198 states have (on average 2.484848484848485) internal successors, (492), 270 states have internal predecessors, (492), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:08:21,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 271 states to 271 states and 492 transitions. [2023-11-23 21:08:21,370 INFO L78 Accepts]: Start accepts. Automaton has 271 states and 492 transitions. Word has length 6 [2023-11-23 21:08:21,371 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:08:21,371 INFO L495 AbstractCegarLoop]: Abstraction has 271 states and 492 transitions. [2023-11-23 21:08:21,371 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:08:21,371 INFO L276 IsEmpty]: Start isEmpty. Operand 271 states and 492 transitions. [2023-11-23 21:08:21,372 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2023-11-23 21:08:21,372 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:08:21,372 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:08:21,385 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7ab65aa-9c5a-4ee5-bca2-2f2ed1171530/bin/utaipan-verify-mE87zJ7Ire/mathsat -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 [2023-11-23 21:08:21,576 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7ab65aa-9c5a-4ee5-bca2-2f2ed1171530/bin/utaipan-verify-mE87zJ7Ire/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-23 21:08:21,576 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [buildErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, buildErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, buildErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 66 more)] === [2023-11-23 21:08:21,577 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:08:21,577 INFO L85 PathProgramCache]: Analyzing trace with hash -1304654668, now seen corresponding path program 1 times [2023-11-23 21:08:21,577 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-23 21:08:21,578 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [910439694] [2023-11-23 21:08:21,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:08:21,578 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 [2023-11-23 21:08:21,578 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7ab65aa-9c5a-4ee5-bca2-2f2ed1171530/bin/utaipan-verify-mE87zJ7Ire/mathsat [2023-11-23 21:08:21,579 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7ab65aa-9c5a-4ee5-bca2-2f2ed1171530/bin/utaipan-verify-mE87zJ7Ire/mathsat -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) [2023-11-23 21:08:21,590 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7ab65aa-9c5a-4ee5-bca2-2f2ed1171530/bin/utaipan-verify-mE87zJ7Ire/mathsat -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 [2023-11-23 21:08:21,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:08:21,716 INFO L262 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 11 conjunts are in the unsatisfiable core [2023-11-23 21:08:21,718 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:08:21,733 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-23 21:08:21,735 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 5 [2023-11-23 21:08:21,742 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2023-11-23 21:08:21,822 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-23 21:08:21,823 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 [2023-11-23 21:08:21,836 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2023-11-23 21:08:21,837 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 [2023-11-23 21:08:21,870 INFO L349 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2023-11-23 21:08:21,871 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 18 [2023-11-23 21:08:21,942 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:08:21,942 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 21:08:21,943 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-23 21:08:21,943 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [910439694] [2023-11-23 21:08:21,943 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [910439694] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:08:21,943 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:08:21,943 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-23 21:08:21,944 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1117025432] [2023-11-23 21:08:21,944 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:08:21,944 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-23 21:08:21,944 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-23 21:08:21,945 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-23 21:08:21,945 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-23 21:08:21,945 INFO L87 Difference]: Start difference. First operand 271 states and 492 transitions. Second operand has 5 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:08:22,315 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:08:22,316 INFO L93 Difference]: Finished difference Result 303 states and 541 transitions. [2023-11-23 21:08:22,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-23 21:08:22,316 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2023-11-23 21:08:22,317 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:08:22,319 INFO L225 Difference]: With dead ends: 303 [2023-11-23 21:08:22,319 INFO L226 Difference]: Without dead ends: 303 [2023-11-23 21:08:22,319 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-11-23 21:08:22,320 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 165 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 84 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 165 SdHoareTripleChecker+Valid, 29 SdHoareTripleChecker+Invalid, 89 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 84 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-23 21:08:22,321 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [165 Valid, 29 Invalid, 89 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 84 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-23 21:08:22,322 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 303 states. [2023-11-23 21:08:22,334 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 303 to 244. [2023-11-23 21:08:22,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 244 states, 183 states have (on average 2.377049180327869) internal successors, (435), 243 states have internal predecessors, (435), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:08:22,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 244 states to 244 states and 435 transitions. [2023-11-23 21:08:22,336 INFO L78 Accepts]: Start accepts. Automaton has 244 states and 435 transitions. Word has length 7 [2023-11-23 21:08:22,336 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:08:22,336 INFO L495 AbstractCegarLoop]: Abstraction has 244 states and 435 transitions. [2023-11-23 21:08:22,337 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:08:22,337 INFO L276 IsEmpty]: Start isEmpty. Operand 244 states and 435 transitions. [2023-11-23 21:08:22,337 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2023-11-23 21:08:22,337 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:08:22,337 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:08:22,349 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7ab65aa-9c5a-4ee5-bca2-2f2ed1171530/bin/utaipan-verify-mE87zJ7Ire/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2023-11-23 21:08:22,541 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7ab65aa-9c5a-4ee5-bca2-2f2ed1171530/bin/utaipan-verify-mE87zJ7Ire/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-23 21:08:22,541 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting buildErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [buildErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, buildErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, buildErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 66 more)] === [2023-11-23 21:08:22,542 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:08:22,542 INFO L85 PathProgramCache]: Analyzing trace with hash -1304653068, now seen corresponding path program 1 times [2023-11-23 21:08:22,542 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-23 21:08:22,542 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1076711740] [2023-11-23 21:08:22,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:08:22,543 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 [2023-11-23 21:08:22,543 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7ab65aa-9c5a-4ee5-bca2-2f2ed1171530/bin/utaipan-verify-mE87zJ7Ire/mathsat [2023-11-23 21:08:22,544 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7ab65aa-9c5a-4ee5-bca2-2f2ed1171530/bin/utaipan-verify-mE87zJ7Ire/mathsat -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) [2023-11-23 21:08:22,546 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7ab65aa-9c5a-4ee5-bca2-2f2ed1171530/bin/utaipan-verify-mE87zJ7Ire/mathsat -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 [2023-11-23 21:08:22,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:08:22,667 INFO L262 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-23 21:08:22,669 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:08:22,674 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 [2023-11-23 21:08:22,683 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:08:22,683 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 21:08:22,683 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-23 21:08:22,683 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1076711740] [2023-11-23 21:08:22,684 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1076711740] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:08:22,684 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:08:22,684 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-23 21:08:22,684 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1591174651] [2023-11-23 21:08:22,684 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:08:22,685 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 21:08:22,685 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-23 21:08:22,685 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 21:08:22,685 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 21:08:22,686 INFO L87 Difference]: Start difference. First operand 244 states and 435 transitions. Second operand has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:08:22,872 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:08:22,872 INFO L93 Difference]: Finished difference Result 232 states and 412 transitions. [2023-11-23 21:08:22,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:08:22,873 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2023-11-23 21:08:22,873 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:08:22,875 INFO L225 Difference]: With dead ends: 232 [2023-11-23 21:08:22,875 INFO L226 Difference]: Without dead ends: 232 [2023-11-23 21:08:22,875 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 21:08:22,876 INFO L413 NwaCegarLoop]: 37 mSDtfsCounter, 15 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 71 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 57 SdHoareTripleChecker+Invalid, 75 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 71 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-23 21:08:22,877 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 57 Invalid, 75 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 71 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-23 21:08:22,878 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 232 states. [2023-11-23 21:08:22,884 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 232 to 232. [2023-11-23 21:08:22,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 232 states, 175 states have (on average 2.354285714285714) internal successors, (412), 231 states have internal predecessors, (412), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:08:22,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 232 states to 232 states and 412 transitions. [2023-11-23 21:08:22,887 INFO L78 Accepts]: Start accepts. Automaton has 232 states and 412 transitions. Word has length 7 [2023-11-23 21:08:22,887 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:08:22,887 INFO L495 AbstractCegarLoop]: Abstraction has 232 states and 412 transitions. [2023-11-23 21:08:22,887 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:08:22,888 INFO L276 IsEmpty]: Start isEmpty. Operand 232 states and 412 transitions. [2023-11-23 21:08:22,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2023-11-23 21:08:22,888 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:08:22,888 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:08:22,896 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7ab65aa-9c5a-4ee5-bca2-2f2ed1171530/bin/utaipan-verify-mE87zJ7Ire/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Ended with exit code 0 [2023-11-23 21:08:23,091 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7ab65aa-9c5a-4ee5-bca2-2f2ed1171530/bin/utaipan-verify-mE87zJ7Ire/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-23 21:08:23,091 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting buildErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [buildErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, buildErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, buildErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 66 more)] === [2023-11-23 21:08:23,092 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:08:23,092 INFO L85 PathProgramCache]: Analyzing trace with hash -1304653067, now seen corresponding path program 1 times [2023-11-23 21:08:23,092 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-23 21:08:23,092 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1136891747] [2023-11-23 21:08:23,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:08:23,092 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 [2023-11-23 21:08:23,092 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7ab65aa-9c5a-4ee5-bca2-2f2ed1171530/bin/utaipan-verify-mE87zJ7Ire/mathsat [2023-11-23 21:08:23,093 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7ab65aa-9c5a-4ee5-bca2-2f2ed1171530/bin/utaipan-verify-mE87zJ7Ire/mathsat -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) [2023-11-23 21:08:23,096 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7ab65aa-9c5a-4ee5-bca2-2f2ed1171530/bin/utaipan-verify-mE87zJ7Ire/mathsat -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 [2023-11-23 21:08:23,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:08:23,208 INFO L262 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-23 21:08:23,209 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:08:23,215 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 [2023-11-23 21:08:23,235 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:08:23,235 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 21:08:23,235 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-23 21:08:23,235 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1136891747] [2023-11-23 21:08:23,235 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1136891747] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:08:23,235 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:08:23,236 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-23 21:08:23,236 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [469209473] [2023-11-23 21:08:23,236 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:08:23,236 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 21:08:23,236 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-23 21:08:23,237 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 21:08:23,237 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 21:08:23,237 INFO L87 Difference]: Start difference. First operand 232 states and 412 transitions. Second operand has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:08:23,429 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:08:23,429 INFO L93 Difference]: Finished difference Result 220 states and 389 transitions. [2023-11-23 21:08:23,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:08:23,430 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2023-11-23 21:08:23,430 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:08:23,432 INFO L225 Difference]: With dead ends: 220 [2023-11-23 21:08:23,432 INFO L226 Difference]: Without dead ends: 220 [2023-11-23 21:08:23,433 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 21:08:23,433 INFO L413 NwaCegarLoop]: 36 mSDtfsCounter, 11 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 64 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 60 SdHoareTripleChecker+Invalid, 68 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 64 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-23 21:08:23,434 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 60 Invalid, 68 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 64 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-23 21:08:23,435 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 220 states. [2023-11-23 21:08:23,440 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 220 to 220. [2023-11-23 21:08:23,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 220 states, 167 states have (on average 2.3293413173652695) internal successors, (389), 219 states have internal predecessors, (389), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:08:23,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 220 states to 220 states and 389 transitions. [2023-11-23 21:08:23,452 INFO L78 Accepts]: Start accepts. Automaton has 220 states and 389 transitions. Word has length 7 [2023-11-23 21:08:23,452 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:08:23,452 INFO L495 AbstractCegarLoop]: Abstraction has 220 states and 389 transitions. [2023-11-23 21:08:23,452 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:08:23,452 INFO L276 IsEmpty]: Start isEmpty. Operand 220 states and 389 transitions. [2023-11-23 21:08:23,453 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2023-11-23 21:08:23,453 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:08:23,453 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:08:23,465 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7ab65aa-9c5a-4ee5-bca2-2f2ed1171530/bin/utaipan-verify-mE87zJ7Ire/mathsat -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 [2023-11-23 21:08:23,659 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7ab65aa-9c5a-4ee5-bca2-2f2ed1171530/bin/utaipan-verify-mE87zJ7Ire/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-23 21:08:23,660 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting buildErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [buildErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, buildErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, buildErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 66 more)] === [2023-11-23 21:08:23,676 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:08:23,676 INFO L85 PathProgramCache]: Analyzing trace with hash 1271600991, now seen corresponding path program 1 times [2023-11-23 21:08:23,676 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-23 21:08:23,677 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [176346826] [2023-11-23 21:08:23,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:08:23,677 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 [2023-11-23 21:08:23,677 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7ab65aa-9c5a-4ee5-bca2-2f2ed1171530/bin/utaipan-verify-mE87zJ7Ire/mathsat [2023-11-23 21:08:23,678 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7ab65aa-9c5a-4ee5-bca2-2f2ed1171530/bin/utaipan-verify-mE87zJ7Ire/mathsat -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) [2023-11-23 21:08:23,697 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7ab65aa-9c5a-4ee5-bca2-2f2ed1171530/bin/utaipan-verify-mE87zJ7Ire/mathsat -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 [2023-11-23 21:08:23,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:08:23,808 INFO L262 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 22 conjunts are in the unsatisfiable core [2023-11-23 21:08:23,811 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:08:24,018 INFO L349 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2023-11-23 21:08:24,018 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 18 [2023-11-23 21:08:24,058 INFO L349 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2023-11-23 21:08:24,059 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 18 [2023-11-23 21:08:24,170 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:08:24,171 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 21:08:24,171 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-23 21:08:24,171 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [176346826] [2023-11-23 21:08:24,171 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [176346826] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:08:24,171 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:08:24,171 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-23 21:08:24,171 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [936170099] [2023-11-23 21:08:24,184 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:08:24,185 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-23 21:08:24,185 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-23 21:08:24,185 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-23 21:08:24,185 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-11-23 21:08:24,186 INFO L87 Difference]: Start difference. First operand 220 states and 389 transitions. Second operand has 9 states, 9 states have (on average 1.2222222222222223) internal successors, (11), 8 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:08:25,326 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:08:25,326 INFO L93 Difference]: Finished difference Result 244 states and 429 transitions. [2023-11-23 21:08:25,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-23 21:08:25,327 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 1.2222222222222223) internal successors, (11), 8 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2023-11-23 21:08:25,327 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:08:25,329 INFO L225 Difference]: With dead ends: 244 [2023-11-23 21:08:25,329 INFO L226 Difference]: Without dead ends: 244 [2023-11-23 21:08:25,330 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=80, Invalid=192, Unknown=0, NotChecked=0, Total=272 [2023-11-23 21:08:25,331 INFO L413 NwaCegarLoop]: 44 mSDtfsCounter, 172 mSDsluCounter, 195 mSDsCounter, 0 mSdLazyCounter, 207 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 172 SdHoareTripleChecker+Valid, 239 SdHoareTripleChecker+Invalid, 211 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 207 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-11-23 21:08:25,331 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [172 Valid, 239 Invalid, 211 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 207 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-11-23 21:08:25,332 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 244 states. [2023-11-23 21:08:25,339 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 244 to 235. [2023-11-23 21:08:25,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 235 states, 182 states have (on average 2.2747252747252746) internal successors, (414), 234 states have internal predecessors, (414), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:08:25,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 235 states to 235 states and 414 transitions. [2023-11-23 21:08:25,342 INFO L78 Accepts]: Start accepts. Automaton has 235 states and 414 transitions. Word has length 11 [2023-11-23 21:08:25,342 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:08:25,342 INFO L495 AbstractCegarLoop]: Abstraction has 235 states and 414 transitions. [2023-11-23 21:08:25,343 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 1.2222222222222223) internal successors, (11), 8 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:08:25,343 INFO L276 IsEmpty]: Start isEmpty. Operand 235 states and 414 transitions. [2023-11-23 21:08:25,343 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2023-11-23 21:08:25,343 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:08:25,344 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:08:25,360 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7ab65aa-9c5a-4ee5-bca2-2f2ed1171530/bin/utaipan-verify-mE87zJ7Ire/mathsat -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 [2023-11-23 21:08:25,547 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7ab65aa-9c5a-4ee5-bca2-2f2ed1171530/bin/utaipan-verify-mE87zJ7Ire/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-23 21:08:25,547 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting buildErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [buildErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, buildErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, buildErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 66 more)] === [2023-11-23 21:08:25,547 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:08:25,548 INFO L85 PathProgramCache]: Analyzing trace with hash 1271602111, now seen corresponding path program 1 times [2023-11-23 21:08:25,548 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-23 21:08:25,548 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1592222784] [2023-11-23 21:08:25,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:08:25,549 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 [2023-11-23 21:08:25,549 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7ab65aa-9c5a-4ee5-bca2-2f2ed1171530/bin/utaipan-verify-mE87zJ7Ire/mathsat [2023-11-23 21:08:25,550 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7ab65aa-9c5a-4ee5-bca2-2f2ed1171530/bin/utaipan-verify-mE87zJ7Ire/mathsat -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) [2023-11-23 21:08:25,551 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7ab65aa-9c5a-4ee5-bca2-2f2ed1171530/bin/utaipan-verify-mE87zJ7Ire/mathsat -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 [2023-11-23 21:08:25,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:08:25,726 INFO L262 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-23 21:08:25,728 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:08:25,807 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-23 21:08:25,808 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 [2023-11-23 21:08:25,820 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2023-11-23 21:08:25,820 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 [2023-11-23 21:08:25,842 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:08:25,842 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 21:08:25,843 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-23 21:08:25,843 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1592222784] [2023-11-23 21:08:25,843 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1592222784] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:08:25,843 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:08:25,843 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-23 21:08:25,843 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1298682170] [2023-11-23 21:08:25,844 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:08:25,844 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-23 21:08:25,844 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-23 21:08:25,845 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-23 21:08:25,845 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-11-23 21:08:25,845 INFO L87 Difference]: Start difference. First operand 235 states and 414 transitions. Second operand has 6 states, 5 states have (on average 2.2) internal successors, (11), 6 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:08:25,991 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:08:25,991 INFO L93 Difference]: Finished difference Result 232 states and 409 transitions. [2023-11-23 21:08:25,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-23 21:08:25,992 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.2) internal successors, (11), 6 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2023-11-23 21:08:25,992 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:08:25,994 INFO L225 Difference]: With dead ends: 232 [2023-11-23 21:08:25,994 INFO L226 Difference]: Without dead ends: 232 [2023-11-23 21:08:25,995 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2023-11-23 21:08:25,995 INFO L413 NwaCegarLoop]: 37 mSDtfsCounter, 84 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 84 SdHoareTripleChecker+Valid, 74 SdHoareTripleChecker+Invalid, 64 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-23 21:08:25,996 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [84 Valid, 74 Invalid, 64 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 63 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-23 21:08:25,997 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 232 states. [2023-11-23 21:08:26,003 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 232 to 226. [2023-11-23 21:08:26,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 226 states, 174 states have (on average 2.293103448275862) internal successors, (399), 225 states have internal predecessors, (399), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:08:26,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 226 states to 226 states and 399 transitions. [2023-11-23 21:08:26,005 INFO L78 Accepts]: Start accepts. Automaton has 226 states and 399 transitions. Word has length 11 [2023-11-23 21:08:26,006 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:08:26,006 INFO L495 AbstractCegarLoop]: Abstraction has 226 states and 399 transitions. [2023-11-23 21:08:26,006 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.2) internal successors, (11), 6 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:08:26,006 INFO L276 IsEmpty]: Start isEmpty. Operand 226 states and 399 transitions. [2023-11-23 21:08:26,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2023-11-23 21:08:26,007 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:08:26,007 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:08:26,012 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7ab65aa-9c5a-4ee5-bca2-2f2ed1171530/bin/utaipan-verify-mE87zJ7Ire/mathsat -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 [2023-11-23 21:08:26,212 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7ab65aa-9c5a-4ee5-bca2-2f2ed1171530/bin/utaipan-verify-mE87zJ7Ire/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-23 21:08:26,212 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [buildErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, buildErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, buildErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 66 more)] === [2023-11-23 21:08:26,213 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:08:26,213 INFO L85 PathProgramCache]: Analyzing trace with hash -269962595, now seen corresponding path program 1 times [2023-11-23 21:08:26,214 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-23 21:08:26,214 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [522417950] [2023-11-23 21:08:26,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:08:26,214 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 [2023-11-23 21:08:26,214 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7ab65aa-9c5a-4ee5-bca2-2f2ed1171530/bin/utaipan-verify-mE87zJ7Ire/mathsat [2023-11-23 21:08:26,215 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7ab65aa-9c5a-4ee5-bca2-2f2ed1171530/bin/utaipan-verify-mE87zJ7Ire/mathsat -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) [2023-11-23 21:08:26,272 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7ab65aa-9c5a-4ee5-bca2-2f2ed1171530/bin/utaipan-verify-mE87zJ7Ire/mathsat -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 [2023-11-23 21:08:26,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:08:26,432 INFO L262 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 11 conjunts are in the unsatisfiable core [2023-11-23 21:08:26,436 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:08:26,441 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 [2023-11-23 21:08:26,452 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-23 21:08:26,453 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-23 21:08:26,481 INFO L349 Elim1Store]: treesize reduction 15, result has 42.3 percent of original size [2023-11-23 21:08:26,481 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 16 treesize of output 17 [2023-11-23 21:08:26,521 INFO L349 Elim1Store]: treesize reduction 15, result has 42.3 percent of original size [2023-11-23 21:08:26,521 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 20 treesize of output 21 [2023-11-23 21:08:26,663 INFO L349 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2023-11-23 21:08:26,664 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 21 treesize of output 31 [2023-11-23 21:08:26,851 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:08:26,851 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 21:08:26,851 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-23 21:08:26,851 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [522417950] [2023-11-23 21:08:26,851 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [522417950] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:08:26,851 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:08:26,851 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-23 21:08:26,852 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1762670532] [2023-11-23 21:08:26,852 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:08:26,852 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-23 21:08:26,852 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-23 21:08:26,853 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-23 21:08:26,853 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-11-23 21:08:26,853 INFO L87 Difference]: Start difference. First operand 226 states and 399 transitions. Second operand has 7 states, 6 states have (on average 3.0) internal successors, (18), 6 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:08:27,153 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:08:27,154 INFO L93 Difference]: Finished difference Result 262 states and 454 transitions. [2023-11-23 21:08:27,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:08:27,154 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.0) internal successors, (18), 6 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2023-11-23 21:08:27,155 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:08:27,156 INFO L225 Difference]: With dead ends: 262 [2023-11-23 21:08:27,157 INFO L226 Difference]: Without dead ends: 262 [2023-11-23 21:08:27,157 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 11 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-11-23 21:08:27,158 INFO L413 NwaCegarLoop]: 27 mSDtfsCounter, 143 mSDsluCounter, 40 mSDsCounter, 0 mSdLazyCounter, 104 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 143 SdHoareTripleChecker+Valid, 67 SdHoareTripleChecker+Invalid, 116 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 104 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-23 21:08:27,158 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [143 Valid, 67 Invalid, 116 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 104 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-23 21:08:27,159 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 262 states. [2023-11-23 21:08:27,165 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 262 to 233. [2023-11-23 21:08:27,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 233 states, 189 states have (on average 2.2433862433862433) internal successors, (424), 232 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:08:27,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 233 states to 233 states and 424 transitions. [2023-11-23 21:08:27,168 INFO L78 Accepts]: Start accepts. Automaton has 233 states and 424 transitions. Word has length 18 [2023-11-23 21:08:27,168 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:08:27,168 INFO L495 AbstractCegarLoop]: Abstraction has 233 states and 424 transitions. [2023-11-23 21:08:27,168 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 3.0) internal successors, (18), 6 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:08:27,169 INFO L276 IsEmpty]: Start isEmpty. Operand 233 states and 424 transitions. [2023-11-23 21:08:27,169 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2023-11-23 21:08:27,170 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:08:27,170 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:08:27,179 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7ab65aa-9c5a-4ee5-bca2-2f2ed1171530/bin/utaipan-verify-mE87zJ7Ire/mathsat -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 [2023-11-23 21:08:27,374 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7ab65aa-9c5a-4ee5-bca2-2f2ed1171530/bin/utaipan-verify-mE87zJ7Ire/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-23 21:08:27,374 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [buildErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, buildErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, buildErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 66 more)] === [2023-11-23 21:08:27,374 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:08:27,374 INFO L85 PathProgramCache]: Analyzing trace with hash -269962594, now seen corresponding path program 1 times [2023-11-23 21:08:27,375 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-23 21:08:27,375 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [164017990] [2023-11-23 21:08:27,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:08:27,375 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 [2023-11-23 21:08:27,376 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7ab65aa-9c5a-4ee5-bca2-2f2ed1171530/bin/utaipan-verify-mE87zJ7Ire/mathsat [2023-11-23 21:08:27,377 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7ab65aa-9c5a-4ee5-bca2-2f2ed1171530/bin/utaipan-verify-mE87zJ7Ire/mathsat -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) [2023-11-23 21:08:27,392 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7ab65aa-9c5a-4ee5-bca2-2f2ed1171530/bin/utaipan-verify-mE87zJ7Ire/mathsat -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 [2023-11-23 21:08:27,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:08:27,578 INFO L262 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 17 conjunts are in the unsatisfiable core [2023-11-23 21:08:27,581 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:08:27,592 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 [2023-11-23 21:08:27,598 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 [2023-11-23 21:08:27,614 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-23 21:08:27,615 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-23 21:08:27,673 INFO L349 Elim1Store]: treesize reduction 13, result has 40.9 percent of original size [2023-11-23 21:08:27,673 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 13 [2023-11-23 21:08:27,696 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2023-11-23 21:08:27,696 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 [2023-11-23 21:08:27,730 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 [2023-11-23 21:08:27,760 INFO L349 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2023-11-23 21:08:27,760 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 18 [2023-11-23 21:08:28,092 INFO L349 Elim1Store]: treesize reduction 28, result has 40.4 percent of original size [2023-11-23 21:08:28,093 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 39 treesize of output 50 [2023-11-23 21:08:28,138 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-23 21:08:28,138 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 32 treesize of output 56 [2023-11-23 21:08:28,945 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:08:28,945 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 21:08:28,946 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-23 21:08:28,946 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [164017990] [2023-11-23 21:08:28,946 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [164017990] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:08:28,946 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:08:28,946 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-23 21:08:28,947 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [469113652] [2023-11-23 21:08:28,947 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:08:28,947 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-23 21:08:28,948 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-23 21:08:28,948 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-23 21:08:28,948 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-23 21:08:28,949 INFO L87 Difference]: Start difference. First operand 233 states and 424 transitions. Second operand has 6 states, 5 states have (on average 3.6) internal successors, (18), 5 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:08:29,662 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:08:29,662 INFO L93 Difference]: Finished difference Result 231 states and 381 transitions. [2023-11-23 21:08:29,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-23 21:08:29,663 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.6) internal successors, (18), 5 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2023-11-23 21:08:29,663 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:08:29,665 INFO L225 Difference]: With dead ends: 231 [2023-11-23 21:08:29,665 INFO L226 Difference]: Without dead ends: 231 [2023-11-23 21:08:29,665 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2023-11-23 21:08:29,666 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 237 mSDsluCounter, 29 mSDsCounter, 0 mSdLazyCounter, 124 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 237 SdHoareTripleChecker+Valid, 51 SdHoareTripleChecker+Invalid, 134 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 124 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-23 21:08:29,666 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [237 Valid, 51 Invalid, 134 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 124 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-23 21:08:29,667 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 231 states. [2023-11-23 21:08:29,673 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 231 to 201. [2023-11-23 21:08:29,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 201 states, 174 states have (on average 2.0057471264367814) internal successors, (349), 200 states have internal predecessors, (349), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:08:29,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 201 states to 201 states and 349 transitions. [2023-11-23 21:08:29,676 INFO L78 Accepts]: Start accepts. Automaton has 201 states and 349 transitions. Word has length 18 [2023-11-23 21:08:29,676 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:08:29,676 INFO L495 AbstractCegarLoop]: Abstraction has 201 states and 349 transitions. [2023-11-23 21:08:29,676 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.6) internal successors, (18), 5 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:08:29,676 INFO L276 IsEmpty]: Start isEmpty. Operand 201 states and 349 transitions. [2023-11-23 21:08:29,677 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2023-11-23 21:08:29,677 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:08:29,677 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:08:29,687 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7ab65aa-9c5a-4ee5-bca2-2f2ed1171530/bin/utaipan-verify-mE87zJ7Ire/mathsat -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 [2023-11-23 21:08:29,882 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7ab65aa-9c5a-4ee5-bca2-2f2ed1171530/bin/utaipan-verify-mE87zJ7Ire/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-23 21:08:29,882 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting buildErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [buildErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, buildErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, buildErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 66 more)] === [2023-11-23 21:08:29,882 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:08:29,883 INFO L85 PathProgramCache]: Analyzing trace with hash 826773780, now seen corresponding path program 1 times [2023-11-23 21:08:29,883 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-23 21:08:29,883 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [699243704] [2023-11-23 21:08:29,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:08:29,883 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 [2023-11-23 21:08:29,884 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7ab65aa-9c5a-4ee5-bca2-2f2ed1171530/bin/utaipan-verify-mE87zJ7Ire/mathsat [2023-11-23 21:08:29,885 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7ab65aa-9c5a-4ee5-bca2-2f2ed1171530/bin/utaipan-verify-mE87zJ7Ire/mathsat -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) [2023-11-23 21:08:29,925 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7ab65aa-9c5a-4ee5-bca2-2f2ed1171530/bin/utaipan-verify-mE87zJ7Ire/mathsat -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 [2023-11-23 21:08:30,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:08:30,140 INFO L262 TraceCheckSpWp]: Trace formula consists of 187 conjuncts, 18 conjunts are in the unsatisfiable core [2023-11-23 21:08:30,143 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:08:30,228 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-11-23 21:08:30,264 INFO L349 Elim1Store]: treesize reduction 29, result has 27.5 percent of original size [2023-11-23 21:08:30,265 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 18 treesize of output 24 [2023-11-23 21:08:30,371 INFO L349 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2023-11-23 21:08:30,372 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 22 [2023-11-23 21:08:30,459 INFO L349 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2023-11-23 21:08:30,465 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 14 [2023-11-23 21:08:30,509 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:08:30,509 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 21:08:30,673 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 32 [2023-11-23 21:08:30,808 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:08:30,809 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-23 21:08:30,809 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [699243704] [2023-11-23 21:08:30,809 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [699243704] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-23 21:08:30,809 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [689573024] [2023-11-23 21:08:30,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:08:30,810 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-11-23 21:08:30,810 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7ab65aa-9c5a-4ee5-bca2-2f2ed1171530/bin/utaipan-verify-mE87zJ7Ire/cvc4 [2023-11-23 21:08:30,816 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7ab65aa-9c5a-4ee5-bca2-2f2ed1171530/bin/utaipan-verify-mE87zJ7Ire/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-11-23 21:08:30,840 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7ab65aa-9c5a-4ee5-bca2-2f2ed1171530/bin/utaipan-verify-mE87zJ7Ire/cvc4 --incremental --print-success --lang smt (14)] Waiting until timeout for monitored process [2023-11-23 21:08:31,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:08:31,186 INFO L262 TraceCheckSpWp]: Trace formula consists of 187 conjuncts, 20 conjunts are in the unsatisfiable core [2023-11-23 21:08:31,189 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:08:31,379 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-11-23 21:08:31,464 INFO L349 Elim1Store]: treesize reduction 29, result has 27.5 percent of original size [2023-11-23 21:08:31,464 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 18 treesize of output 24 [2023-11-23 21:08:31,624 INFO L349 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2023-11-23 21:08:31,624 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 22 [2023-11-23 21:08:31,746 INFO L349 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2023-11-23 21:08:31,746 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 14 [2023-11-23 21:08:31,756 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:08:31,756 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 21:08:31,804 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 32 [2023-11-23 21:08:31,910 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:08:31,911 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [689573024] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-23 21:08:31,911 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [764118488] [2023-11-23 21:08:31,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:08:31,912 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 21:08:31,912 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7ab65aa-9c5a-4ee5-bca2-2f2ed1171530/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 21:08:31,914 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7ab65aa-9c5a-4ee5-bca2-2f2ed1171530/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 21:08:31,933 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7ab65aa-9c5a-4ee5-bca2-2f2ed1171530/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-11-23 21:08:32,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:08:32,072 INFO L262 TraceCheckSpWp]: Trace formula consists of 187 conjuncts, 18 conjunts are in the unsatisfiable core [2023-11-23 21:08:32,074 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:08:32,140 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-11-23 21:08:32,178 INFO L349 Elim1Store]: treesize reduction 36, result has 35.7 percent of original size [2023-11-23 21:08:32,179 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 25 treesize of output 28 [2023-11-23 21:08:32,386 INFO L349 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2023-11-23 21:08:32,386 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 35 treesize of output 26 [2023-11-23 21:08:32,536 INFO L349 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2023-11-23 21:08:32,537 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 38 treesize of output 18 [2023-11-23 21:08:32,540 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:08:32,540 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 21:08:32,603 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 32 [2023-11-23 21:08:32,723 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:08:32,723 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [764118488] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-23 21:08:32,723 INFO L185 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2023-11-23 21:08:32,723 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 9, 8, 8, 8] total 23 [2023-11-23 21:08:32,723 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1780072846] [2023-11-23 21:08:32,724 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2023-11-23 21:08:32,724 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-11-23 21:08:32,724 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-23 21:08:32,725 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-11-23 21:08:32,725 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=482, Unknown=0, NotChecked=0, Total=552 [2023-11-23 21:08:32,725 INFO L87 Difference]: Start difference. First operand 201 states and 349 transitions. Second operand has 24 states, 23 states have (on average 2.130434782608696) internal successors, (49), 24 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:08:34,282 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:08:34,283 INFO L93 Difference]: Finished difference Result 207 states and 359 transitions. [2023-11-23 21:08:34,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-23 21:08:34,283 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 23 states have (on average 2.130434782608696) internal successors, (49), 24 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2023-11-23 21:08:34,284 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:08:34,285 INFO L225 Difference]: With dead ends: 207 [2023-11-23 21:08:34,285 INFO L226 Difference]: Without dead ends: 207 [2023-11-23 21:08:34,286 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 81 SyntacticMatches, 5 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 197 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=157, Invalid=655, Unknown=0, NotChecked=0, Total=812 [2023-11-23 21:08:34,286 INFO L413 NwaCegarLoop]: 32 mSDtfsCounter, 149 mSDsluCounter, 162 mSDsCounter, 0 mSdLazyCounter, 454 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 149 SdHoareTripleChecker+Valid, 194 SdHoareTripleChecker+Invalid, 476 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 454 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-11-23 21:08:34,287 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [149 Valid, 194 Invalid, 476 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 454 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-11-23 21:08:34,288 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 207 states. [2023-11-23 21:08:34,293 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 207 to 198. [2023-11-23 21:08:34,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 198 states, 172 states have (on average 2.0) internal successors, (344), 197 states have internal predecessors, (344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:08:34,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 198 states to 198 states and 344 transitions. [2023-11-23 21:08:34,295 INFO L78 Accepts]: Start accepts. Automaton has 198 states and 344 transitions. Word has length 19 [2023-11-23 21:08:34,295 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:08:34,296 INFO L495 AbstractCegarLoop]: Abstraction has 198 states and 344 transitions. [2023-11-23 21:08:34,296 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 23 states have (on average 2.130434782608696) internal successors, (49), 24 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:08:34,296 INFO L276 IsEmpty]: Start isEmpty. Operand 198 states and 344 transitions. [2023-11-23 21:08:34,300 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2023-11-23 21:08:34,300 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:08:34,300 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:08:34,309 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7ab65aa-9c5a-4ee5-bca2-2f2ed1171530/bin/utaipan-verify-mE87zJ7Ire/cvc4 --incremental --print-success --lang smt (14)] Ended with exit code 0 [2023-11-23 21:08:34,517 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7ab65aa-9c5a-4ee5-bca2-2f2ed1171530/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2023-11-23 21:08:34,708 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7ab65aa-9c5a-4ee5-bca2-2f2ed1171530/bin/utaipan-verify-mE87zJ7Ire/mathsat -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 [2023-11-23 21:08:34,904 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7ab65aa-9c5a-4ee5-bca2-2f2ed1171530/bin/utaipan-verify-mE87zJ7Ire/cvc4 --incremental --print-success --lang smt,15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7ab65aa-9c5a-4ee5-bca2-2f2ed1171530/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7ab65aa-9c5a-4ee5-bca2-2f2ed1171530/bin/utaipan-verify-mE87zJ7Ire/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-23 21:08:34,904 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting buildErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [buildErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, buildErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, buildErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 66 more)] === [2023-11-23 21:08:34,905 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:08:34,905 INFO L85 PathProgramCache]: Analyzing trace with hash 826773781, now seen corresponding path program 1 times [2023-11-23 21:08:34,905 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-23 21:08:34,905 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [883232832] [2023-11-23 21:08:34,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:08:34,906 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 [2023-11-23 21:08:34,906 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7ab65aa-9c5a-4ee5-bca2-2f2ed1171530/bin/utaipan-verify-mE87zJ7Ire/mathsat [2023-11-23 21:08:34,907 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7ab65aa-9c5a-4ee5-bca2-2f2ed1171530/bin/utaipan-verify-mE87zJ7Ire/mathsat -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) [2023-11-23 21:08:34,910 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7ab65aa-9c5a-4ee5-bca2-2f2ed1171530/bin/utaipan-verify-mE87zJ7Ire/mathsat -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 [2023-11-23 21:08:35,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:08:35,135 INFO L262 TraceCheckSpWp]: Trace formula consists of 187 conjuncts, 33 conjunts are in the unsatisfiable core [2023-11-23 21:08:35,139 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:08:35,153 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 [2023-11-23 21:08:35,161 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 [2023-11-23 21:08:35,287 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-23 21:08:35,288 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 [2023-11-23 21:08:35,323 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2023-11-23 21:08:35,324 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 [2023-11-23 21:08:35,390 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-11-23 21:08:35,398 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-11-23 21:08:35,465 INFO L349 Elim1Store]: treesize reduction 6, result has 57.1 percent of original size [2023-11-23 21:08:35,465 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 17 treesize of output 17 [2023-11-23 21:08:35,481 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 18 treesize of output 13 [2023-11-23 21:08:35,617 INFO L349 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2023-11-23 21:08:35,617 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 24 [2023-11-23 21:08:35,648 INFO L349 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2023-11-23 21:08:35,648 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 18 [2023-11-23 21:08:35,826 INFO L349 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2023-11-23 21:08:35,827 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 36 treesize of output 16 [2023-11-23 21:08:35,842 INFO L349 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2023-11-23 21:08:35,842 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 7 [2023-11-23 21:08:35,875 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:08:35,876 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 21:08:36,398 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 32 [2023-11-23 21:08:36,423 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 66 treesize of output 62 [2023-11-23 21:08:36,428 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 102 treesize of output 94 [2023-11-23 21:08:40,962 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-23 21:08:40,963 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 10 select indices, 10 select index equivalence classes, 0 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 45 case distinctions, treesize of input 251 treesize of output 681