./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/goblint-regression/28-race_reach_92-evilcollapse_racing-deref.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version a0165632 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef4b90d9-1fed-47f1-a962-68ab56c7533f/bin/utaipan-verify-YMUCfTKeje/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef4b90d9-1fed-47f1-a962-68ab56c7533f/bin/utaipan-verify-YMUCfTKeje/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef4b90d9-1fed-47f1-a962-68ab56c7533f/bin/utaipan-verify-YMUCfTKeje/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef4b90d9-1fed-47f1-a962-68ab56c7533f/bin/utaipan-verify-YMUCfTKeje/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/goblint-regression/28-race_reach_92-evilcollapse_racing-deref.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef4b90d9-1fed-47f1-a962-68ab56c7533f/bin/utaipan-verify-YMUCfTKeje/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef4b90d9-1fed-47f1-a962-68ab56c7533f/bin/utaipan-verify-YMUCfTKeje --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 dda5467f7679a243042daf02aae11f74f39b907c2525dfc042cb8ad8b69dcfc9 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-a016563 [2024-11-09 07:06:16,481 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-09 07:06:16,602 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef4b90d9-1fed-47f1-a962-68ab56c7533f/bin/utaipan-verify-YMUCfTKeje/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2024-11-09 07:06:16,609 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-09 07:06:16,610 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-09 07:06:16,685 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-09 07:06:16,686 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-09 07:06:16,686 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-09 07:06:16,688 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-09 07:06:16,690 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-09 07:06:16,692 INFO L153 SettingsManager]: * User list type=DISABLED [2024-11-09 07:06:16,693 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2024-11-09 07:06:16,693 INFO L153 SettingsManager]: * Explicit value domain=true [2024-11-09 07:06:16,694 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2024-11-09 07:06:16,694 INFO L153 SettingsManager]: * Octagon Domain=false [2024-11-09 07:06:16,695 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2024-11-09 07:06:16,695 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2024-11-09 07:06:16,695 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2024-11-09 07:06:16,696 INFO L153 SettingsManager]: * Interval Domain=false [2024-11-09 07:06:16,696 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2024-11-09 07:06:16,697 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2024-11-09 07:06:16,698 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2024-11-09 07:06:16,698 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-09 07:06:16,699 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-09 07:06:16,700 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-09 07:06:16,700 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-09 07:06:16,700 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-09 07:06:16,701 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-09 07:06:16,701 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-09 07:06:16,702 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-09 07:06:16,702 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-09 07:06:16,703 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-09 07:06:16,703 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-09 07:06:16,719 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-09 07:06:16,719 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-09 07:06:16,720 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-09 07:06:16,720 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-09 07:06:16,720 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-09 07:06:16,721 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-09 07:06:16,721 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-09 07:06:16,721 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-09 07:06:16,724 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-09 07:06:16,724 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-09 07:06:16,724 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-09 07:06:16,725 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2024-11-09 07:06:16,725 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-09 07:06:16,725 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-09 07:06:16,725 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2024-11-09 07:06:16,725 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-09 07:06:16,725 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_ef4b90d9-1fed-47f1-a962-68ab56c7533f/bin/utaipan-verify-YMUCfTKeje/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef4b90d9-1fed-47f1-a962-68ab56c7533f/bin/utaipan-verify-YMUCfTKeje Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> dda5467f7679a243042daf02aae11f74f39b907c2525dfc042cb8ad8b69dcfc9 [2024-11-09 07:06:17,139 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-09 07:06:17,213 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-09 07:06:17,217 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-09 07:06:17,219 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-09 07:06:17,222 INFO L274 PluginConnector]: CDTParser initialized [2024-11-09 07:06:17,224 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef4b90d9-1fed-47f1-a962-68ab56c7533f/bin/utaipan-verify-YMUCfTKeje/../../sv-benchmarks/c/goblint-regression/28-race_reach_92-evilcollapse_racing-deref.i Unable to find full path for "g++" [2024-11-09 07:06:19,747 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-09 07:06:20,115 INFO L384 CDTParser]: Found 1 translation units. [2024-11-09 07:06:20,115 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef4b90d9-1fed-47f1-a962-68ab56c7533f/sv-benchmarks/c/goblint-regression/28-race_reach_92-evilcollapse_racing-deref.i [2024-11-09 07:06:20,175 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef4b90d9-1fed-47f1-a962-68ab56c7533f/bin/utaipan-verify-YMUCfTKeje/data/86e32c432/0e8153ce15be49c7ab39f5535375549d/FLAG492448458 [2024-11-09 07:06:20,355 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef4b90d9-1fed-47f1-a962-68ab56c7533f/bin/utaipan-verify-YMUCfTKeje/data/86e32c432/0e8153ce15be49c7ab39f5535375549d [2024-11-09 07:06:20,359 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-09 07:06:20,361 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-09 07:06:20,363 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-09 07:06:20,364 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-09 07:06:20,375 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-09 07:06:20,376 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 07:06:20" (1/1) ... [2024-11-09 07:06:20,378 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@73c37c38 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:06:20, skipping insertion in model container [2024-11-09 07:06:20,378 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 07:06:20" (1/1) ... [2024-11-09 07:06:20,481 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-09 07:06:21,313 WARN L1698 CHandler]: Possible shadowing of function new [2024-11-09 07:06:21,315 WARN L1698 CHandler]: Possible shadowing of function new [2024-11-09 07:06:21,316 WARN L1698 CHandler]: Possible shadowing of function new [2024-11-09 07:06:21,318 WARN L1698 CHandler]: Possible shadowing of function new [2024-11-09 07:06:21,369 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 07:06:21,430 ERROR L321 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) [2024-11-09 07:06:21,431 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@1aca34a5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:06:21, skipping insertion in model container [2024-11-09 07:06:21,432 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-09 07:06:21,433 INFO L186 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2024-11-09 07:06:21,435 INFO L158 Benchmark]: Toolchain (without parser) took 1072.89ms. Allocated memory is still 180.4MB. Free memory was 149.9MB in the beginning and 131.4MB in the end (delta: 18.5MB). Peak memory consumption was 21.3MB. Max. memory is 16.1GB. [2024-11-09 07:06:21,436 INFO L158 Benchmark]: CDTParser took 0.78ms. Allocated memory is still 130.0MB. Free memory is still 102.3MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-09 07:06:21,437 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1069.27ms. Allocated memory is still 180.4MB. Free memory was 149.7MB in the beginning and 131.4MB in the end (delta: 18.3MB). Peak memory consumption was 21.3MB. Max. memory is 16.1GB. [2024-11-09 07:06:21,440 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.78ms. Allocated memory is still 130.0MB. Free memory is still 102.3MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1069.27ms. Allocated memory is still 180.4MB. Free memory was 149.7MB in the beginning and 131.4MB in the end (delta: 18.3MB). Peak memory consumption was 21.3MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 1051]: Unsupported Syntax Found a cast between two array/pointer types of different sizes while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef4b90d9-1fed-47f1-a962-68ab56c7533f/bin/utaipan-verify-YMUCfTKeje/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef4b90d9-1fed-47f1-a962-68ab56c7533f/bin/utaipan-verify-YMUCfTKeje/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef4b90d9-1fed-47f1-a962-68ab56c7533f/bin/utaipan-verify-YMUCfTKeje/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef4b90d9-1fed-47f1-a962-68ab56c7533f/bin/utaipan-verify-YMUCfTKeje/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/goblint-regression/28-race_reach_92-evilcollapse_racing-deref.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef4b90d9-1fed-47f1-a962-68ab56c7533f/bin/utaipan-verify-YMUCfTKeje/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef4b90d9-1fed-47f1-a962-68ab56c7533f/bin/utaipan-verify-YMUCfTKeje --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 dda5467f7679a243042daf02aae11f74f39b907c2525dfc042cb8ad8b69dcfc9 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-a016563 [2024-11-09 07:06:24,505 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-09 07:06:24,641 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef4b90d9-1fed-47f1-a962-68ab56c7533f/bin/utaipan-verify-YMUCfTKeje/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf [2024-11-09 07:06:24,652 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-09 07:06:24,652 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-09 07:06:24,707 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-09 07:06:24,711 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-09 07:06:24,712 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-09 07:06:24,712 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-09 07:06:24,713 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-09 07:06:24,713 INFO L153 SettingsManager]: * User list type=DISABLED [2024-11-09 07:06:24,714 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2024-11-09 07:06:24,715 INFO L153 SettingsManager]: * Explicit value domain=true [2024-11-09 07:06:24,717 INFO L153 SettingsManager]: * Octagon Domain=false [2024-11-09 07:06:24,717 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2024-11-09 07:06:24,718 INFO L153 SettingsManager]: * Interval Domain=false [2024-11-09 07:06:24,719 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-09 07:06:24,719 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-09 07:06:24,719 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-09 07:06:24,724 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-09 07:06:24,724 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-09 07:06:24,725 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-09 07:06:24,725 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-09 07:06:24,726 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-09 07:06:24,726 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-09 07:06:24,726 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-09 07:06:24,726 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-09 07:06:24,727 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-09 07:06:24,727 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2024-11-09 07:06:24,727 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-09 07:06:24,730 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2024-11-09 07:06:24,731 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-09 07:06:24,731 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-09 07:06:24,731 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-09 07:06:24,731 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-09 07:06:24,732 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-09 07:06:24,732 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-09 07:06:24,732 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-09 07:06:24,733 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-09 07:06:24,733 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-09 07:06:24,733 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-09 07:06:24,734 INFO L153 SettingsManager]: * Trace refinement strategy=WALRUS [2024-11-09 07:06:24,734 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2024-11-09 07:06:24,735 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-09 07:06:24,735 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2024-11-09 07:06:24,735 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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_ef4b90d9-1fed-47f1-a962-68ab56c7533f/bin/utaipan-verify-YMUCfTKeje/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef4b90d9-1fed-47f1-a962-68ab56c7533f/bin/utaipan-verify-YMUCfTKeje Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> dda5467f7679a243042daf02aae11f74f39b907c2525dfc042cb8ad8b69dcfc9 [2024-11-09 07:06:25,173 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-09 07:06:25,211 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-09 07:06:25,214 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-09 07:06:25,216 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-09 07:06:25,217 INFO L274 PluginConnector]: CDTParser initialized [2024-11-09 07:06:25,220 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef4b90d9-1fed-47f1-a962-68ab56c7533f/bin/utaipan-verify-YMUCfTKeje/../../sv-benchmarks/c/goblint-regression/28-race_reach_92-evilcollapse_racing-deref.i Unable to find full path for "g++" [2024-11-09 07:06:27,385 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-09 07:06:27,838 INFO L384 CDTParser]: Found 1 translation units. [2024-11-09 07:06:27,838 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef4b90d9-1fed-47f1-a962-68ab56c7533f/sv-benchmarks/c/goblint-regression/28-race_reach_92-evilcollapse_racing-deref.i [2024-11-09 07:06:27,861 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef4b90d9-1fed-47f1-a962-68ab56c7533f/bin/utaipan-verify-YMUCfTKeje/data/a2af5612f/1ac26cb1fb9547e794d9b22d4840208a/FLAGf6fd1ee7e [2024-11-09 07:06:27,881 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef4b90d9-1fed-47f1-a962-68ab56c7533f/bin/utaipan-verify-YMUCfTKeje/data/a2af5612f/1ac26cb1fb9547e794d9b22d4840208a [2024-11-09 07:06:27,884 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-09 07:06:27,886 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-09 07:06:27,887 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-09 07:06:27,888 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-09 07:06:27,895 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-09 07:06:27,896 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 07:06:27" (1/1) ... [2024-11-09 07:06:27,897 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2c5c1927 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:06:27, skipping insertion in model container [2024-11-09 07:06:27,898 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 07:06:27" (1/1) ... [2024-11-09 07:06:27,981 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-09 07:06:28,727 WARN L1698 CHandler]: Possible shadowing of function new [2024-11-09 07:06:28,727 WARN L1698 CHandler]: Possible shadowing of function new [2024-11-09 07:06:28,728 WARN L1698 CHandler]: Possible shadowing of function new [2024-11-09 07:06:28,729 WARN L1698 CHandler]: Possible shadowing of function new [2024-11-09 07:06:28,764 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 07:06:28,828 INFO L197 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2024-11-09 07:06:28,848 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-09 07:06:28,905 WARN L1698 CHandler]: Possible shadowing of function new [2024-11-09 07:06:28,909 WARN L1698 CHandler]: Possible shadowing of function new [2024-11-09 07:06:28,909 WARN L1698 CHandler]: Possible shadowing of function new [2024-11-09 07:06:28,910 WARN L1698 CHandler]: Possible shadowing of function new [2024-11-09 07:06:28,932 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 07:06:28,965 INFO L200 MainTranslator]: Completed pre-run [2024-11-09 07:06:29,026 WARN L1698 CHandler]: Possible shadowing of function new [2024-11-09 07:06:29,027 WARN L1698 CHandler]: Possible shadowing of function new [2024-11-09 07:06:29,027 WARN L1698 CHandler]: Possible shadowing of function new [2024-11-09 07:06:29,028 WARN L1698 CHandler]: Possible shadowing of function new [2024-11-09 07:06:29,042 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 07:06:29,141 INFO L204 MainTranslator]: Completed translation [2024-11-09 07:06:29,141 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:06:29 WrapperNode [2024-11-09 07:06:29,141 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-09 07:06:29,142 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-09 07:06:29,142 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-09 07:06:29,143 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-09 07:06:29,150 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:06:29" (1/1) ... [2024-11-09 07:06:29,175 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:06:29" (1/1) ... [2024-11-09 07:06:29,231 INFO L138 Inliner]: procedures = 284, calls = 126, calls flagged for inlining = 12, calls inlined = 13, statements flattened = 292 [2024-11-09 07:06:29,237 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-09 07:06:29,237 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-09 07:06:29,238 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-09 07:06:29,238 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-09 07:06:29,250 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:06:29" (1/1) ... [2024-11-09 07:06:29,250 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:06:29" (1/1) ... [2024-11-09 07:06:29,263 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:06:29" (1/1) ... [2024-11-09 07:06:29,263 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:06:29" (1/1) ... [2024-11-09 07:06:29,297 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:06:29" (1/1) ... [2024-11-09 07:06:29,306 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:06:29" (1/1) ... [2024-11-09 07:06:29,309 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:06:29" (1/1) ... [2024-11-09 07:06:29,311 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:06:29" (1/1) ... [2024-11-09 07:06:29,322 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-09 07:06:29,323 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-09 07:06:29,323 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-09 07:06:29,323 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-09 07:06:29,325 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:06:29" (1/1) ... [2024-11-09 07:06:29,334 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-09 07:06:29,350 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef4b90d9-1fed-47f1-a962-68ab56c7533f/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 07:06:29,371 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef4b90d9-1fed-47f1-a962-68ab56c7533f/bin/utaipan-verify-YMUCfTKeje/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2024-11-09 07:06:29,384 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef4b90d9-1fed-47f1-a962-68ab56c7533f/bin/utaipan-verify-YMUCfTKeje/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2024-11-09 07:06:29,405 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2024-11-09 07:06:29,406 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-09 07:06:29,406 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2024-11-09 07:06:29,406 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-09 07:06:29,406 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2024-11-09 07:06:29,407 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2024-11-09 07:06:29,407 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2024-11-09 07:06:29,407 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2024-11-09 07:06:29,407 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-11-09 07:06:29,407 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-11-09 07:06:29,408 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-09 07:06:29,408 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-09 07:06:29,408 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2024-11-09 07:06:29,408 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2024-11-09 07:06:29,408 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2024-11-09 07:06:29,408 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-09 07:06:29,409 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-09 07:06:29,410 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-09 07:06:29,636 INFO L238 CfgBuilder]: Building ICFG [2024-11-09 07:06:29,639 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-09 07:06:31,166 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-09 07:06:31,166 INFO L287 CfgBuilder]: Performing block encoding [2024-11-09 07:06:33,592 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-09 07:06:33,593 INFO L316 CfgBuilder]: Removed 10 assume(true) statements. [2024-11-09 07:06:33,593 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 07:06:33 BoogieIcfgContainer [2024-11-09 07:06:33,593 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-09 07:06:33,596 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-09 07:06:33,596 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-09 07:06:33,601 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-09 07:06:33,601 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.11 07:06:27" (1/3) ... [2024-11-09 07:06:33,602 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@fb32807 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 07:06:33, skipping insertion in model container [2024-11-09 07:06:33,602 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:06:29" (2/3) ... [2024-11-09 07:06:33,603 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@fb32807 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 07:06:33, skipping insertion in model container [2024-11-09 07:06:33,603 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 07:06:33" (3/3) ... [2024-11-09 07:06:33,605 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_92-evilcollapse_racing-deref.i [2024-11-09 07:06:33,630 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-09 07:06:33,630 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 48 error locations. [2024-11-09 07:06:33,630 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-09 07:06:33,781 INFO L143 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2024-11-09 07:06:33,836 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 129 places, 150 transitions, 307 flow [2024-11-09 07:06:34,010 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 1168 states, 1007 states have (on average 2.6206554121151937) internal successors, (2639), 1167 states have internal predecessors, (2639), 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) [2024-11-09 07:06:34,045 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-09 07:06:34,055 INFO L333 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, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=None, 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;@3a54f8d0, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-09 07:06:34,056 INFO L334 AbstractCegarLoop]: Starting to check reachability of 64 error locations. [2024-11-09 07:06:34,062 INFO L276 IsEmpty]: Start isEmpty. Operand has 1168 states, 1007 states have (on average 2.6206554121151937) internal successors, (2639), 1167 states have internal predecessors, (2639), 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) [2024-11-09 07:06:34,070 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2024-11-09 07:06:34,071 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 07:06:34,073 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2024-11-09 07:06:34,073 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr20REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr20REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr21REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 61 more)] === [2024-11-09 07:06:34,081 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 07:06:34,082 INFO L85 PathProgramCache]: Analyzing trace with hash 25675461, now seen corresponding path program 1 times [2024-11-09 07:06:34,104 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-09 07:06:34,105 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1534176129] [2024-11-09 07:06:34,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:06:34,106 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 [2024-11-09 07:06:34,106 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef4b90d9-1fed-47f1-a962-68ab56c7533f/bin/utaipan-verify-YMUCfTKeje/mathsat [2024-11-09 07:06:34,110 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef4b90d9-1fed-47f1-a962-68ab56c7533f/bin/utaipan-verify-YMUCfTKeje/mathsat -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) [2024-11-09 07:06:34,113 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef4b90d9-1fed-47f1-a962-68ab56c7533f/bin/utaipan-verify-YMUCfTKeje/mathsat -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 [2024-11-09 07:06:34,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:06:34,340 INFO L255 TraceCheckSpWp]: Trace formula consists of 286 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-09 07:06:34,345 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 07:06:34,395 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 07:06:34,396 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 07:06:34,397 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-09 07:06:34,398 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1534176129] [2024-11-09 07:06:34,399 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1534176129] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 07:06:34,400 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 07:06:34,400 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 07:06:34,402 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1349081771] [2024-11-09 07:06:34,403 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 07:06:34,409 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 07:06:34,409 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-09 07:06:34,447 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 07:06:34,448 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 07:06:34,455 INFO L87 Difference]: Start difference. First operand has 1168 states, 1007 states have (on average 2.6206554121151937) internal successors, (2639), 1167 states have internal predecessors, (2639), 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, 3 states have (on average 1.3333333333333333) internal successors, (4), 2 states have internal predecessors, (4), 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) [2024-11-09 07:06:35,023 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 07:06:35,024 INFO L93 Difference]: Finished difference Result 2316 states and 5238 transitions. [2024-11-09 07:06:35,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 07:06:35,027 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 2 states have internal predecessors, (4), 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 4 [2024-11-09 07:06:35,028 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 07:06:35,059 INFO L225 Difference]: With dead ends: 2316 [2024-11-09 07:06:35,059 INFO L226 Difference]: Without dead ends: 1181 [2024-11-09 07:06:35,069 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 07:06:35,074 INFO L432 NwaCegarLoop]: 93 mSDtfsCounter, 36 mSDsluCounter, 91 mSDsCounter, 0 mSdLazyCounter, 89 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 184 SdHoareTripleChecker+Invalid, 90 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 89 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-09 07:06:35,075 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 184 Invalid, 90 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 89 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-09 07:06:35,102 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1181 states. [2024-11-09 07:06:35,219 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1181 to 1148. [2024-11-09 07:06:35,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1148 states, 989 states have (on average 2.3943377148634983) internal successors, (2368), 1147 states have internal predecessors, (2368), 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) [2024-11-09 07:06:35,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1148 states to 1148 states and 2368 transitions. [2024-11-09 07:06:35,243 INFO L78 Accepts]: Start accepts. Automaton has 1148 states and 2368 transitions. Word has length 4 [2024-11-09 07:06:35,244 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 07:06:35,244 INFO L471 AbstractCegarLoop]: Abstraction has 1148 states and 2368 transitions. [2024-11-09 07:06:35,245 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 2 states have internal predecessors, (4), 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) [2024-11-09 07:06:35,245 INFO L276 IsEmpty]: Start isEmpty. Operand 1148 states and 2368 transitions. [2024-11-09 07:06:35,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2024-11-09 07:06:35,246 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 07:06:35,246 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2024-11-09 07:06:35,253 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef4b90d9-1fed-47f1-a962-68ab56c7533f/bin/utaipan-verify-YMUCfTKeje/mathsat -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)] Ended with exit code 0 [2024-11-09 07:06:35,450 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef4b90d9-1fed-47f1-a962-68ab56c7533f/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-09 07:06:35,451 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr20REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr21REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 61 more)] === [2024-11-09 07:06:35,451 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 07:06:35,452 INFO L85 PathProgramCache]: Analyzing trace with hash 25680197, now seen corresponding path program 1 times [2024-11-09 07:06:35,453 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-09 07:06:35,453 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1855819360] [2024-11-09 07:06:35,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:06:35,453 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 [2024-11-09 07:06:35,458 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef4b90d9-1fed-47f1-a962-68ab56c7533f/bin/utaipan-verify-YMUCfTKeje/mathsat [2024-11-09 07:06:35,464 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef4b90d9-1fed-47f1-a962-68ab56c7533f/bin/utaipan-verify-YMUCfTKeje/mathsat -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) [2024-11-09 07:06:35,466 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef4b90d9-1fed-47f1-a962-68ab56c7533f/bin/utaipan-verify-YMUCfTKeje/mathsat -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 [2024-11-09 07:06:35,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:06:35,698 INFO L255 TraceCheckSpWp]: Trace formula consists of 288 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-09 07:06:35,700 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 07:06:35,794 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 07:06:35,795 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 07:06:35,796 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-09 07:06:35,796 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1855819360] [2024-11-09 07:06:35,796 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1855819360] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 07:06:35,797 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 07:06:35,797 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 07:06:35,797 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1604377831] [2024-11-09 07:06:35,797 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 07:06:35,800 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 07:06:35,802 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-09 07:06:35,803 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 07:06:35,804 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-09 07:06:35,804 INFO L87 Difference]: Start difference. First operand 1148 states and 2368 transitions. Second operand has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 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) [2024-11-09 07:06:36,688 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 07:06:36,689 INFO L93 Difference]: Finished difference Result 1151 states and 2370 transitions. [2024-11-09 07:06:36,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 07:06:36,691 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 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 4 [2024-11-09 07:06:36,691 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 07:06:36,709 INFO L225 Difference]: With dead ends: 1151 [2024-11-09 07:06:36,710 INFO L226 Difference]: Without dead ends: 1128 [2024-11-09 07:06:36,713 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-09 07:06:36,715 INFO L432 NwaCegarLoop]: 55 mSDtfsCounter, 128 mSDsluCounter, 78 mSDsCounter, 0 mSdLazyCounter, 193 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 128 SdHoareTripleChecker+Valid, 133 SdHoareTripleChecker+Invalid, 199 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 193 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-09 07:06:36,719 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [128 Valid, 133 Invalid, 199 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 193 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-09 07:06:36,726 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1128 states. [2024-11-09 07:06:36,762 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1128 to 1128. [2024-11-09 07:06:36,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1128 states, 979 states have (on average 2.379979570990807) internal successors, (2330), 1127 states have internal predecessors, (2330), 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) [2024-11-09 07:06:36,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1128 states to 1128 states and 2330 transitions. [2024-11-09 07:06:36,778 INFO L78 Accepts]: Start accepts. Automaton has 1128 states and 2330 transitions. Word has length 4 [2024-11-09 07:06:36,778 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 07:06:36,779 INFO L471 AbstractCegarLoop]: Abstraction has 1128 states and 2330 transitions. [2024-11-09 07:06:36,781 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 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) [2024-11-09 07:06:36,781 INFO L276 IsEmpty]: Start isEmpty. Operand 1128 states and 2330 transitions. [2024-11-09 07:06:36,781 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2024-11-09 07:06:36,782 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 07:06:36,782 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2024-11-09 07:06:36,788 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef4b90d9-1fed-47f1-a962-68ab56c7533f/bin/utaipan-verify-YMUCfTKeje/mathsat -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 [2024-11-09 07:06:36,982 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef4b90d9-1fed-47f1-a962-68ab56c7533f/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-09 07:06:36,984 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr20REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr21REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 61 more)] === [2024-11-09 07:06:36,984 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 07:06:36,984 INFO L85 PathProgramCache]: Analyzing trace with hash 25680198, now seen corresponding path program 1 times [2024-11-09 07:06:36,985 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-09 07:06:36,986 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1178531391] [2024-11-09 07:06:36,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:06:36,986 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 [2024-11-09 07:06:36,986 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef4b90d9-1fed-47f1-a962-68ab56c7533f/bin/utaipan-verify-YMUCfTKeje/mathsat [2024-11-09 07:06:36,991 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef4b90d9-1fed-47f1-a962-68ab56c7533f/bin/utaipan-verify-YMUCfTKeje/mathsat -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) [2024-11-09 07:06:36,993 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef4b90d9-1fed-47f1-a962-68ab56c7533f/bin/utaipan-verify-YMUCfTKeje/mathsat -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 [2024-11-09 07:06:37,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:06:37,213 INFO L255 TraceCheckSpWp]: Trace formula consists of 288 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-09 07:06:37,215 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 07:06:37,359 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 07:06:37,359 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 07:06:37,360 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-09 07:06:37,360 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1178531391] [2024-11-09 07:06:37,360 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1178531391] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 07:06:37,361 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 07:06:37,361 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 07:06:37,361 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [559679162] [2024-11-09 07:06:37,362 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 07:06:37,362 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 07:06:37,363 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-09 07:06:37,365 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 07:06:37,365 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-09 07:06:37,368 INFO L87 Difference]: Start difference. First operand 1128 states and 2330 transitions. Second operand has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 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) [2024-11-09 07:06:38,269 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 07:06:38,271 INFO L93 Difference]: Finished difference Result 1135 states and 2339 transitions. [2024-11-09 07:06:38,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 07:06:38,272 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 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 4 [2024-11-09 07:06:38,272 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 07:06:38,285 INFO L225 Difference]: With dead ends: 1135 [2024-11-09 07:06:38,285 INFO L226 Difference]: Without dead ends: 1133 [2024-11-09 07:06:38,286 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-09 07:06:38,288 INFO L432 NwaCegarLoop]: 88 mSDtfsCounter, 7 mSDsluCounter, 107 mSDsCounter, 0 mSdLazyCounter, 203 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 195 SdHoareTripleChecker+Invalid, 204 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 203 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-09 07:06:38,292 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 195 Invalid, 204 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 203 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-09 07:06:38,297 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1133 states. [2024-11-09 07:06:38,333 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1133 to 1130. [2024-11-09 07:06:38,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1130 states, 981 states have (on average 2.3771661569826708) internal successors, (2332), 1129 states have internal predecessors, (2332), 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) [2024-11-09 07:06:38,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1130 states to 1130 states and 2332 transitions. [2024-11-09 07:06:38,351 INFO L78 Accepts]: Start accepts. Automaton has 1130 states and 2332 transitions. Word has length 4 [2024-11-09 07:06:38,351 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 07:06:38,352 INFO L471 AbstractCegarLoop]: Abstraction has 1130 states and 2332 transitions. [2024-11-09 07:06:38,352 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 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) [2024-11-09 07:06:38,352 INFO L276 IsEmpty]: Start isEmpty. Operand 1130 states and 2332 transitions. [2024-11-09 07:06:38,353 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2024-11-09 07:06:38,353 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 07:06:38,353 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 07:06:38,358 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef4b90d9-1fed-47f1-a962-68ab56c7533f/bin/utaipan-verify-YMUCfTKeje/mathsat -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)] Ended with exit code 0 [2024-11-09 07:06:38,557 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef4b90d9-1fed-47f1-a962-68ab56c7533f/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-09 07:06:38,558 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr20REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr21REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 61 more)] === [2024-11-09 07:06:38,558 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 07:06:38,559 INFO L85 PathProgramCache]: Analyzing trace with hash -583831907, now seen corresponding path program 1 times [2024-11-09 07:06:38,560 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-09 07:06:38,560 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2002901610] [2024-11-09 07:06:38,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:06:38,565 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 [2024-11-09 07:06:38,566 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef4b90d9-1fed-47f1-a962-68ab56c7533f/bin/utaipan-verify-YMUCfTKeje/mathsat [2024-11-09 07:06:38,569 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef4b90d9-1fed-47f1-a962-68ab56c7533f/bin/utaipan-verify-YMUCfTKeje/mathsat -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) [2024-11-09 07:06:38,571 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef4b90d9-1fed-47f1-a962-68ab56c7533f/bin/utaipan-verify-YMUCfTKeje/mathsat -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 [2024-11-09 07:06:38,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:06:38,828 INFO L255 TraceCheckSpWp]: Trace formula consists of 330 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-09 07:06:38,830 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 07:06:38,876 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 [2024-11-09 07:06:38,887 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 07:06:38,888 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 07:06:38,888 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-09 07:06:38,888 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2002901610] [2024-11-09 07:06:38,889 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2002901610] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 07:06:38,889 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 07:06:38,889 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 07:06:38,890 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [270632474] [2024-11-09 07:06:38,890 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 07:06:38,890 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 07:06:38,891 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-09 07:06:38,891 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 07:06:38,892 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 07:06:38,892 INFO L87 Difference]: Start difference. First operand 1130 states and 2332 transitions. Second operand has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 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) [2024-11-09 07:06:39,295 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 07:06:39,295 INFO L93 Difference]: Finished difference Result 1130 states and 2332 transitions. [2024-11-09 07:06:39,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 07:06:39,297 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 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 8 [2024-11-09 07:06:39,297 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 07:06:39,306 INFO L225 Difference]: With dead ends: 1130 [2024-11-09 07:06:39,306 INFO L226 Difference]: Without dead ends: 1129 [2024-11-09 07:06:39,307 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 07:06:39,308 INFO L432 NwaCegarLoop]: 85 mSDtfsCounter, 7 mSDsluCounter, 59 mSDsCounter, 0 mSdLazyCounter, 112 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 144 SdHoareTripleChecker+Invalid, 112 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 112 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-09 07:06:39,309 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 144 Invalid, 112 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 112 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-09 07:06:39,312 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1129 states. [2024-11-09 07:06:39,347 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1129 to 1129. [2024-11-09 07:06:39,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1129 states, 981 states have (on average 2.376146788990826) internal successors, (2331), 1128 states have internal predecessors, (2331), 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) [2024-11-09 07:06:39,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1129 states to 1129 states and 2331 transitions. [2024-11-09 07:06:39,363 INFO L78 Accepts]: Start accepts. Automaton has 1129 states and 2331 transitions. Word has length 8 [2024-11-09 07:06:39,363 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 07:06:39,364 INFO L471 AbstractCegarLoop]: Abstraction has 1129 states and 2331 transitions. [2024-11-09 07:06:39,364 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 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) [2024-11-09 07:06:39,364 INFO L276 IsEmpty]: Start isEmpty. Operand 1129 states and 2331 transitions. [2024-11-09 07:06:39,365 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2024-11-09 07:06:39,365 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 07:06:39,365 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 07:06:39,373 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef4b90d9-1fed-47f1-a962-68ab56c7533f/bin/utaipan-verify-YMUCfTKeje/mathsat -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)] Ended with exit code 0 [2024-11-09 07:06:39,570 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef4b90d9-1fed-47f1-a962-68ab56c7533f/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-09 07:06:39,570 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr20REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr21REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 61 more)] === [2024-11-09 07:06:39,571 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 07:06:39,571 INFO L85 PathProgramCache]: Analyzing trace with hash -583831906, now seen corresponding path program 1 times [2024-11-09 07:06:39,572 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-09 07:06:39,573 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1179135764] [2024-11-09 07:06:39,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:06:39,573 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 [2024-11-09 07:06:39,574 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef4b90d9-1fed-47f1-a962-68ab56c7533f/bin/utaipan-verify-YMUCfTKeje/mathsat [2024-11-09 07:06:39,578 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef4b90d9-1fed-47f1-a962-68ab56c7533f/bin/utaipan-verify-YMUCfTKeje/mathsat -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) [2024-11-09 07:06:39,580 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef4b90d9-1fed-47f1-a962-68ab56c7533f/bin/utaipan-verify-YMUCfTKeje/mathsat -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 [2024-11-09 07:06:39,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:06:39,847 INFO L255 TraceCheckSpWp]: Trace formula consists of 330 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-09 07:06:39,849 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 07:06:39,861 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 [2024-11-09 07:06:39,880 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 07:06:39,881 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 07:06:39,881 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-09 07:06:39,882 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1179135764] [2024-11-09 07:06:39,882 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1179135764] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 07:06:39,882 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 07:06:39,882 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 07:06:39,883 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1704197720] [2024-11-09 07:06:39,883 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 07:06:39,883 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 07:06:39,884 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-09 07:06:39,884 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 07:06:39,885 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 07:06:39,885 INFO L87 Difference]: Start difference. First operand 1129 states and 2331 transitions. Second operand has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 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) [2024-11-09 07:06:40,434 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 07:06:40,434 INFO L93 Difference]: Finished difference Result 1129 states and 2331 transitions. [2024-11-09 07:06:40,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 07:06:40,435 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 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 8 [2024-11-09 07:06:40,436 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 07:06:40,448 INFO L225 Difference]: With dead ends: 1129 [2024-11-09 07:06:40,448 INFO L226 Difference]: Without dead ends: 1128 [2024-11-09 07:06:40,449 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 07:06:40,452 INFO L432 NwaCegarLoop]: 85 mSDtfsCounter, 6 mSDsluCounter, 56 mSDsCounter, 0 mSdLazyCounter, 114 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 141 SdHoareTripleChecker+Invalid, 114 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 114 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-09 07:06:40,453 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 141 Invalid, 114 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 114 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-09 07:06:40,457 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1128 states. [2024-11-09 07:06:40,522 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1128 to 1128. [2024-11-09 07:06:40,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1128 states, 981 states have (on average 2.3751274209989806) internal successors, (2330), 1127 states have internal predecessors, (2330), 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) [2024-11-09 07:06:40,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1128 states to 1128 states and 2330 transitions. [2024-11-09 07:06:40,538 INFO L78 Accepts]: Start accepts. Automaton has 1128 states and 2330 transitions. Word has length 8 [2024-11-09 07:06:40,538 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 07:06:40,538 INFO L471 AbstractCegarLoop]: Abstraction has 1128 states and 2330 transitions. [2024-11-09 07:06:40,539 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 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) [2024-11-09 07:06:40,539 INFO L276 IsEmpty]: Start isEmpty. Operand 1128 states and 2330 transitions. [2024-11-09 07:06:40,539 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2024-11-09 07:06:40,540 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 07:06:40,540 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 07:06:40,546 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef4b90d9-1fed-47f1-a962-68ab56c7533f/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Ended with exit code 0 [2024-11-09 07:06:40,740 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef4b90d9-1fed-47f1-a962-68ab56c7533f/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-09 07:06:40,741 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr20REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr21REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 61 more)] === [2024-11-09 07:06:40,742 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 07:06:40,742 INFO L85 PathProgramCache]: Analyzing trace with hash -918919079, now seen corresponding path program 1 times [2024-11-09 07:06:40,743 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-09 07:06:40,743 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [838457681] [2024-11-09 07:06:40,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:06:40,743 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 [2024-11-09 07:06:40,743 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef4b90d9-1fed-47f1-a962-68ab56c7533f/bin/utaipan-verify-YMUCfTKeje/mathsat [2024-11-09 07:06:40,744 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef4b90d9-1fed-47f1-a962-68ab56c7533f/bin/utaipan-verify-YMUCfTKeje/mathsat -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) [2024-11-09 07:06:40,746 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef4b90d9-1fed-47f1-a962-68ab56c7533f/bin/utaipan-verify-YMUCfTKeje/mathsat -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 [2024-11-09 07:06:41,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:06:41,051 INFO L255 TraceCheckSpWp]: Trace formula consists of 356 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-09 07:06:41,053 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 07:06:41,060 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 [2024-11-09 07:06:41,086 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 07:06:41,086 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 07:06:41,086 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-09 07:06:41,086 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [838457681] [2024-11-09 07:06:41,087 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [838457681] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 07:06:41,087 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 07:06:41,087 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 07:06:41,087 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1976760366] [2024-11-09 07:06:41,087 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 07:06:41,088 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 07:06:41,088 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-09 07:06:41,088 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 07:06:41,089 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-09 07:06:41,089 INFO L87 Difference]: Start difference. First operand 1128 states and 2330 transitions. Second operand has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 07:06:41,660 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 07:06:41,661 INFO L93 Difference]: Finished difference Result 1128 states and 2330 transitions. [2024-11-09 07:06:41,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-09 07:06:41,662 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2024-11-09 07:06:41,662 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 07:06:41,671 INFO L225 Difference]: With dead ends: 1128 [2024-11-09 07:06:41,671 INFO L226 Difference]: Without dead ends: 1126 [2024-11-09 07:06:41,673 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-09 07:06:41,674 INFO L432 NwaCegarLoop]: 82 mSDtfsCounter, 8 mSDsluCounter, 115 mSDsCounter, 0 mSdLazyCounter, 179 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 197 SdHoareTripleChecker+Invalid, 181 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 179 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-09 07:06:41,674 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 197 Invalid, 181 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 179 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-09 07:06:41,677 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1126 states. [2024-11-09 07:06:41,705 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1126 to 1126. [2024-11-09 07:06:41,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1126 states, 981 states have (on average 2.3730886850152904) internal successors, (2328), 1125 states have internal predecessors, (2328), 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) [2024-11-09 07:06:41,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1126 states to 1126 states and 2328 transitions. [2024-11-09 07:06:41,716 INFO L78 Accepts]: Start accepts. Automaton has 1126 states and 2328 transitions. Word has length 9 [2024-11-09 07:06:41,717 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 07:06:41,717 INFO L471 AbstractCegarLoop]: Abstraction has 1126 states and 2328 transitions. [2024-11-09 07:06:41,717 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 07:06:41,717 INFO L276 IsEmpty]: Start isEmpty. Operand 1126 states and 2328 transitions. [2024-11-09 07:06:41,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2024-11-09 07:06:41,718 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 07:06:41,718 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 07:06:41,725 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef4b90d9-1fed-47f1-a962-68ab56c7533f/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2024-11-09 07:06:41,918 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef4b90d9-1fed-47f1-a962-68ab56c7533f/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-09 07:06:41,919 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr20REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr21REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 61 more)] === [2024-11-09 07:06:41,919 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 07:06:41,919 INFO L85 PathProgramCache]: Analyzing trace with hash -918919078, now seen corresponding path program 1 times [2024-11-09 07:06:41,919 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-09 07:06:41,919 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1993761578] [2024-11-09 07:06:41,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:06:41,920 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 [2024-11-09 07:06:41,920 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef4b90d9-1fed-47f1-a962-68ab56c7533f/bin/utaipan-verify-YMUCfTKeje/mathsat [2024-11-09 07:06:41,921 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef4b90d9-1fed-47f1-a962-68ab56c7533f/bin/utaipan-verify-YMUCfTKeje/mathsat -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) [2024-11-09 07:06:41,922 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef4b90d9-1fed-47f1-a962-68ab56c7533f/bin/utaipan-verify-YMUCfTKeje/mathsat -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 [2024-11-09 07:06:42,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:06:42,140 INFO L255 TraceCheckSpWp]: Trace formula consists of 356 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-09 07:06:42,142 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 07:06:42,154 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 [2024-11-09 07:06:42,195 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 07:06:42,195 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 07:06:42,196 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-09 07:06:42,196 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1993761578] [2024-11-09 07:06:42,196 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1993761578] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 07:06:42,196 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 07:06:42,196 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 07:06:42,196 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1723290697] [2024-11-09 07:06:42,196 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 07:06:42,197 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 07:06:42,197 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-09 07:06:42,197 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 07:06:42,197 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-09 07:06:42,198 INFO L87 Difference]: Start difference. First operand 1126 states and 2328 transitions. Second operand has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 07:06:42,931 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 07:06:42,932 INFO L93 Difference]: Finished difference Result 1126 states and 2328 transitions. [2024-11-09 07:06:42,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 07:06:42,933 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2024-11-09 07:06:42,933 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 07:06:42,942 INFO L225 Difference]: With dead ends: 1126 [2024-11-09 07:06:42,942 INFO L226 Difference]: Without dead ends: 1124 [2024-11-09 07:06:42,943 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-09 07:06:42,944 INFO L432 NwaCegarLoop]: 83 mSDtfsCounter, 3 mSDsluCounter, 112 mSDsCounter, 0 mSdLazyCounter, 181 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 195 SdHoareTripleChecker+Invalid, 182 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 181 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-09 07:06:42,945 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 195 Invalid, 182 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 181 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-09 07:06:42,948 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1124 states. [2024-11-09 07:06:42,979 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1124 to 1124. [2024-11-09 07:06:42,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1124 states, 981 states have (on average 2.3710499490316006) internal successors, (2326), 1123 states have internal predecessors, (2326), 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) [2024-11-09 07:06:42,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1124 states to 1124 states and 2326 transitions. [2024-11-09 07:06:42,991 INFO L78 Accepts]: Start accepts. Automaton has 1124 states and 2326 transitions. Word has length 9 [2024-11-09 07:06:42,991 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 07:06:42,992 INFO L471 AbstractCegarLoop]: Abstraction has 1124 states and 2326 transitions. [2024-11-09 07:06:42,992 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 07:06:42,992 INFO L276 IsEmpty]: Start isEmpty. Operand 1124 states and 2326 transitions. [2024-11-09 07:06:42,993 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2024-11-09 07:06:42,993 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 07:06:42,993 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 07:06:43,001 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef4b90d9-1fed-47f1-a962-68ab56c7533f/bin/utaipan-verify-YMUCfTKeje/mathsat -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 [2024-11-09 07:06:43,193 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef4b90d9-1fed-47f1-a962-68ab56c7533f/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-09 07:06:43,195 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr21REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr20REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr21REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 61 more)] === [2024-11-09 07:06:43,195 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 07:06:43,195 INFO L85 PathProgramCache]: Analyzing trace with hash 1579136733, now seen corresponding path program 1 times [2024-11-09 07:06:43,196 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-09 07:06:43,196 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [126610065] [2024-11-09 07:06:43,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:06:43,197 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 [2024-11-09 07:06:43,197 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef4b90d9-1fed-47f1-a962-68ab56c7533f/bin/utaipan-verify-YMUCfTKeje/mathsat [2024-11-09 07:06:43,201 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef4b90d9-1fed-47f1-a962-68ab56c7533f/bin/utaipan-verify-YMUCfTKeje/mathsat -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) [2024-11-09 07:06:43,202 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef4b90d9-1fed-47f1-a962-68ab56c7533f/bin/utaipan-verify-YMUCfTKeje/mathsat -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 [2024-11-09 07:06:43,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:06:43,435 INFO L255 TraceCheckSpWp]: Trace formula consists of 324 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-09 07:06:43,435 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 07:06:43,443 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 07:06:43,444 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 07:06:43,444 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-09 07:06:43,444 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [126610065] [2024-11-09 07:06:43,444 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [126610065] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 07:06:43,444 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 07:06:43,445 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 07:06:43,445 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1666753331] [2024-11-09 07:06:43,445 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 07:06:43,445 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 07:06:43,445 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-09 07:06:43,446 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 07:06:43,446 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 07:06:43,447 INFO L87 Difference]: Start difference. First operand 1124 states and 2326 transitions. Second operand has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 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) [2024-11-09 07:06:43,769 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 07:06:43,769 INFO L93 Difference]: Finished difference Result 2263 states and 4669 transitions. [2024-11-09 07:06:43,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 07:06:43,770 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 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 10 [2024-11-09 07:06:43,770 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 07:06:43,779 INFO L225 Difference]: With dead ends: 2263 [2024-11-09 07:06:43,779 INFO L226 Difference]: Without dead ends: 1144 [2024-11-09 07:06:43,782 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 07:06:43,783 INFO L432 NwaCegarLoop]: 83 mSDtfsCounter, 19 mSDsluCounter, 81 mSDsCounter, 0 mSdLazyCounter, 89 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 164 SdHoareTripleChecker+Invalid, 90 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 89 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-09 07:06:43,783 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 164 Invalid, 90 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 89 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-09 07:06:43,787 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1144 states. [2024-11-09 07:06:43,819 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1144 to 1126. [2024-11-09 07:06:43,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1126 states, 983 states have (on average 2.368260427263479) internal successors, (2328), 1125 states have internal predecessors, (2328), 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) [2024-11-09 07:06:43,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1126 states to 1126 states and 2328 transitions. [2024-11-09 07:06:43,832 INFO L78 Accepts]: Start accepts. Automaton has 1126 states and 2328 transitions. Word has length 10 [2024-11-09 07:06:43,833 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 07:06:43,833 INFO L471 AbstractCegarLoop]: Abstraction has 1126 states and 2328 transitions. [2024-11-09 07:06:43,833 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 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) [2024-11-09 07:06:43,833 INFO L276 IsEmpty]: Start isEmpty. Operand 1126 states and 2328 transitions. [2024-11-09 07:06:43,834 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2024-11-09 07:06:43,834 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 07:06:43,834 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 07:06:43,843 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef4b90d9-1fed-47f1-a962-68ab56c7533f/bin/utaipan-verify-YMUCfTKeje/mathsat -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 [2024-11-09 07:06:44,035 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef4b90d9-1fed-47f1-a962-68ab56c7533f/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-09 07:06:44,035 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr20REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr21REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 61 more)] === [2024-11-09 07:06:44,035 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 07:06:44,035 INFO L85 PathProgramCache]: Analyzing trace with hash 1682055495, now seen corresponding path program 1 times [2024-11-09 07:06:44,036 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-09 07:06:44,036 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1778161717] [2024-11-09 07:06:44,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:06:44,037 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 [2024-11-09 07:06:44,037 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef4b90d9-1fed-47f1-a962-68ab56c7533f/bin/utaipan-verify-YMUCfTKeje/mathsat [2024-11-09 07:06:44,042 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef4b90d9-1fed-47f1-a962-68ab56c7533f/bin/utaipan-verify-YMUCfTKeje/mathsat -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) [2024-11-09 07:06:44,043 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef4b90d9-1fed-47f1-a962-68ab56c7533f/bin/utaipan-verify-YMUCfTKeje/mathsat -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 [2024-11-09 07:06:44,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:06:44,933 INFO L255 TraceCheckSpWp]: Trace formula consists of 394 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-09 07:06:44,935 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 07:06:45,043 INFO L349 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2024-11-09 07:06:45,044 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 [2024-11-09 07:06:45,115 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 07:06:45,115 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 07:06:45,115 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-09 07:06:45,115 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1778161717] [2024-11-09 07:06:45,115 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1778161717] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 07:06:45,116 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 07:06:45,116 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 07:06:45,116 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1070578677] [2024-11-09 07:06:45,116 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 07:06:45,116 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 07:06:45,116 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-09 07:06:45,117 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 07:06:45,117 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-09 07:06:45,117 INFO L87 Difference]: Start difference. First operand 1126 states and 2328 transitions. Second operand has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 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) [2024-11-09 07:06:45,861 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 07:06:45,861 INFO L93 Difference]: Finished difference Result 1126 states and 2328 transitions. [2024-11-09 07:06:45,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 07:06:45,862 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 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 [2024-11-09 07:06:45,863 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 07:06:45,873 INFO L225 Difference]: With dead ends: 1126 [2024-11-09 07:06:45,873 INFO L226 Difference]: Without dead ends: 1124 [2024-11-09 07:06:45,875 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-09 07:06:45,875 INFO L432 NwaCegarLoop]: 52 mSDtfsCounter, 123 mSDsluCounter, 74 mSDsCounter, 0 mSdLazyCounter, 175 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 123 SdHoareTripleChecker+Valid, 126 SdHoareTripleChecker+Invalid, 177 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 175 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-09 07:06:45,876 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [123 Valid, 126 Invalid, 177 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 175 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-09 07:06:45,879 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1124 states. [2024-11-09 07:06:45,939 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1124 to 1124. [2024-11-09 07:06:45,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1124 states, 983 states have (on average 2.3662258392675484) internal successors, (2326), 1123 states have internal predecessors, (2326), 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) [2024-11-09 07:06:45,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1124 states to 1124 states and 2326 transitions. [2024-11-09 07:06:45,951 INFO L78 Accepts]: Start accepts. Automaton has 1124 states and 2326 transitions. Word has length 11 [2024-11-09 07:06:45,951 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 07:06:45,951 INFO L471 AbstractCegarLoop]: Abstraction has 1124 states and 2326 transitions. [2024-11-09 07:06:45,952 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 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) [2024-11-09 07:06:45,952 INFO L276 IsEmpty]: Start isEmpty. Operand 1124 states and 2326 transitions. [2024-11-09 07:06:45,952 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2024-11-09 07:06:45,953 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 07:06:45,953 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 07:06:45,960 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef4b90d9-1fed-47f1-a962-68ab56c7533f/bin/utaipan-verify-YMUCfTKeje/mathsat -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)] Ended with exit code 0 [2024-11-09 07:06:46,153 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef4b90d9-1fed-47f1-a962-68ab56c7533f/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-09 07:06:46,154 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr20REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr21REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 61 more)] === [2024-11-09 07:06:46,154 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 07:06:46,154 INFO L85 PathProgramCache]: Analyzing trace with hash 1682055496, now seen corresponding path program 1 times [2024-11-09 07:06:46,155 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-09 07:06:46,155 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [928421393] [2024-11-09 07:06:46,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:06:46,155 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 [2024-11-09 07:06:46,155 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef4b90d9-1fed-47f1-a962-68ab56c7533f/bin/utaipan-verify-YMUCfTKeje/mathsat [2024-11-09 07:06:46,157 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef4b90d9-1fed-47f1-a962-68ab56c7533f/bin/utaipan-verify-YMUCfTKeje/mathsat -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) [2024-11-09 07:06:46,159 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef4b90d9-1fed-47f1-a962-68ab56c7533f/bin/utaipan-verify-YMUCfTKeje/mathsat -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 [2024-11-09 07:06:47,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:06:47,089 INFO L255 TraceCheckSpWp]: Trace formula consists of 394 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-09 07:06:47,090 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 07:06:47,345 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 07:06:47,346 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 [2024-11-09 07:06:47,470 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 07:06:47,470 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 07:06:47,470 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-09 07:06:47,471 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [928421393] [2024-11-09 07:06:47,471 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [928421393] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 07:06:47,471 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 07:06:47,471 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 07:06:47,471 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [154179325] [2024-11-09 07:06:47,471 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 07:06:47,472 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-09 07:06:47,472 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-09 07:06:47,472 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-09 07:06:47,472 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-09 07:06:47,473 INFO L87 Difference]: Start difference. First operand 1124 states and 2326 transitions. Second operand has 5 states, 4 states have (on average 2.75) internal successors, (11), 4 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) [2024-11-09 07:06:48,469 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 07:06:48,469 INFO L93 Difference]: Finished difference Result 1145 states and 2349 transitions. [2024-11-09 07:06:48,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 07:06:48,470 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.75) internal successors, (11), 4 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 [2024-11-09 07:06:48,470 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 07:06:48,480 INFO L225 Difference]: With dead ends: 1145 [2024-11-09 07:06:48,480 INFO L226 Difference]: Without dead ends: 1143 [2024-11-09 07:06:48,481 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-11-09 07:06:48,482 INFO L432 NwaCegarLoop]: 70 mSDtfsCounter, 26 mSDsluCounter, 131 mSDsCounter, 0 mSdLazyCounter, 297 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 201 SdHoareTripleChecker+Invalid, 299 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 297 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-09 07:06:48,483 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 201 Invalid, 299 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 297 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-09 07:06:48,486 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1143 states. [2024-11-09 07:06:48,515 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1143 to 1136. [2024-11-09 07:06:48,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1136 states, 995 states have (on average 2.357788944723618) internal successors, (2346), 1135 states have internal predecessors, (2346), 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) [2024-11-09 07:06:48,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1136 states to 1136 states and 2346 transitions. [2024-11-09 07:06:48,526 INFO L78 Accepts]: Start accepts. Automaton has 1136 states and 2346 transitions. Word has length 11 [2024-11-09 07:06:48,527 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 07:06:48,527 INFO L471 AbstractCegarLoop]: Abstraction has 1136 states and 2346 transitions. [2024-11-09 07:06:48,527 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.75) internal successors, (11), 4 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) [2024-11-09 07:06:48,528 INFO L276 IsEmpty]: Start isEmpty. Operand 1136 states and 2346 transitions. [2024-11-09 07:06:48,528 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2024-11-09 07:06:48,528 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 07:06:48,528 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 07:06:48,537 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef4b90d9-1fed-47f1-a962-68ab56c7533f/bin/utaipan-verify-YMUCfTKeje/mathsat -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 [2024-11-09 07:06:48,729 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef4b90d9-1fed-47f1-a962-68ab56c7533f/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-09 07:06:48,729 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr12REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr20REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr21REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 61 more)] === [2024-11-09 07:06:48,730 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 07:06:48,730 INFO L85 PathProgramCache]: Analyzing trace with hash 604113709, now seen corresponding path program 1 times [2024-11-09 07:06:48,731 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-09 07:06:48,731 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1161137758] [2024-11-09 07:06:48,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:06:48,731 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 [2024-11-09 07:06:48,732 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef4b90d9-1fed-47f1-a962-68ab56c7533f/bin/utaipan-verify-YMUCfTKeje/mathsat [2024-11-09 07:06:48,736 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef4b90d9-1fed-47f1-a962-68ab56c7533f/bin/utaipan-verify-YMUCfTKeje/mathsat -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) [2024-11-09 07:06:48,737 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef4b90d9-1fed-47f1-a962-68ab56c7533f/bin/utaipan-verify-YMUCfTKeje/mathsat -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 [2024-11-09 07:06:49,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:06:49,886 INFO L255 TraceCheckSpWp]: Trace formula consists of 400 conjuncts, 25 conjuncts are in the unsatisfiable core [2024-11-09 07:06:49,889 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 07:06:50,059 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 [2024-11-09 07:06:50,138 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 0 case distinctions, treesize of input 37 treesize of output 15 [2024-11-09 07:06:50,299 INFO L349 Elim1Store]: treesize reduction 17, result has 19.0 percent of original size [2024-11-09 07:06:50,300 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 18 treesize of output 16 [2024-11-09 07:06:50,366 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 15 [2024-11-09 07:06:50,439 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 15 [2024-11-09 07:06:50,475 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2024-11-09 07:06:50,591 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 07:06:50,591 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 07:06:50,592 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-09 07:06:50,592 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1161137758] [2024-11-09 07:06:50,592 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1161137758] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 07:06:50,592 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 07:06:50,592 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-09 07:06:50,592 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1710565979] [2024-11-09 07:06:50,592 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 07:06:50,593 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-09 07:06:50,593 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-09 07:06:50,593 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-09 07:06:50,593 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-11-09 07:06:50,593 INFO L87 Difference]: Start difference. First operand 1136 states and 2346 transitions. Second operand has 10 states, 9 states have (on average 1.3333333333333333) internal successors, (12), 9 states have internal predecessors, (12), 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) [2024-11-09 07:06:52,611 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 07:06:52,611 INFO L93 Difference]: Finished difference Result 1160 states and 2376 transitions. [2024-11-09 07:06:52,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-09 07:06:52,612 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 1.3333333333333333) internal successors, (12), 9 states have internal predecessors, (12), 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 12 [2024-11-09 07:06:52,612 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 07:06:52,618 INFO L225 Difference]: With dead ends: 1160 [2024-11-09 07:06:52,618 INFO L226 Difference]: Without dead ends: 1159 [2024-11-09 07:06:52,619 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=51, Invalid=159, Unknown=0, NotChecked=0, Total=210 [2024-11-09 07:06:52,620 INFO L432 NwaCegarLoop]: 50 mSDtfsCounter, 139 mSDsluCounter, 354 mSDsCounter, 0 mSdLazyCounter, 647 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 139 SdHoareTripleChecker+Valid, 404 SdHoareTripleChecker+Invalid, 655 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 647 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2024-11-09 07:06:52,620 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [139 Valid, 404 Invalid, 655 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 647 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2024-11-09 07:06:52,623 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1159 states. [2024-11-09 07:06:52,649 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1159 to 1146. [2024-11-09 07:06:52,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1146 states, 1005 states have (on average 2.34726368159204) internal successors, (2359), 1145 states have internal predecessors, (2359), 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) [2024-11-09 07:06:52,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1146 states to 1146 states and 2359 transitions. [2024-11-09 07:06:52,659 INFO L78 Accepts]: Start accepts. Automaton has 1146 states and 2359 transitions. Word has length 12 [2024-11-09 07:06:52,659 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 07:06:52,659 INFO L471 AbstractCegarLoop]: Abstraction has 1146 states and 2359 transitions. [2024-11-09 07:06:52,660 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 1.3333333333333333) internal successors, (12), 9 states have internal predecessors, (12), 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) [2024-11-09 07:06:52,660 INFO L276 IsEmpty]: Start isEmpty. Operand 1146 states and 2359 transitions. [2024-11-09 07:06:52,660 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2024-11-09 07:06:52,660 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 07:06:52,661 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 07:06:52,671 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef4b90d9-1fed-47f1-a962-68ab56c7533f/bin/utaipan-verify-YMUCfTKeje/mathsat -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)] Ended with exit code 0 [2024-11-09 07:06:52,861 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef4b90d9-1fed-47f1-a962-68ab56c7533f/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-09 07:06:52,863 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr20REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr21REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 61 more)] === [2024-11-09 07:06:52,863 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 07:06:52,864 INFO L85 PathProgramCache]: Analyzing trace with hash 604113710, now seen corresponding path program 1 times [2024-11-09 07:06:52,864 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-09 07:06:52,865 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1907808211] [2024-11-09 07:06:52,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:06:52,865 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 [2024-11-09 07:06:52,865 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef4b90d9-1fed-47f1-a962-68ab56c7533f/bin/utaipan-verify-YMUCfTKeje/mathsat [2024-11-09 07:06:52,869 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef4b90d9-1fed-47f1-a962-68ab56c7533f/bin/utaipan-verify-YMUCfTKeje/mathsat -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) [2024-11-09 07:06:52,870 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef4b90d9-1fed-47f1-a962-68ab56c7533f/bin/utaipan-verify-YMUCfTKeje/mathsat -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 [2024-11-09 07:06:54,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:06:54,025 INFO L255 TraceCheckSpWp]: Trace formula consists of 400 conjuncts, 36 conjuncts are in the unsatisfiable core [2024-11-09 07:06:54,033 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 07:06:54,209 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 [2024-11-09 07:06:54,229 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 [2024-11-09 07:06:54,374 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2024-11-09 07:06:54,397 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2024-11-09 07:06:54,549 INFO L349 Elim1Store]: treesize reduction 13, result has 40.9 percent of original size [2024-11-09 07:06:54,549 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 [2024-11-09 07:06:54,606 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-11-09 07:06:54,606 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 [2024-11-09 07:06:54,696 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2024-11-09 07:06:54,710 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2024-11-09 07:06:54,858 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2024-11-09 07:06:54,884 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2024-11-09 07:06:54,961 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2024-11-09 07:06:54,971 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2024-11-09 07:06:55,107 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 07:06:55,108 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 07:06:55,108 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-09 07:06:55,108 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1907808211] [2024-11-09 07:06:55,109 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1907808211] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 07:06:55,109 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 07:06:55,109 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-09 07:06:55,109 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1692376094] [2024-11-09 07:06:55,110 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 07:06:55,110 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-09 07:06:55,110 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-09 07:06:55,111 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-09 07:06:55,111 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-11-09 07:06:55,111 INFO L87 Difference]: Start difference. First operand 1146 states and 2359 transitions. Second operand has 10 states, 9 states have (on average 1.3333333333333333) internal successors, (12), 9 states have internal predecessors, (12), 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) [2024-11-09 07:06:57,491 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 07:06:57,492 INFO L93 Difference]: Finished difference Result 1161 states and 2367 transitions. [2024-11-09 07:06:57,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-09 07:06:57,493 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 1.3333333333333333) internal successors, (12), 9 states have internal predecessors, (12), 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 12 [2024-11-09 07:06:57,493 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 07:06:57,500 INFO L225 Difference]: With dead ends: 1161 [2024-11-09 07:06:57,500 INFO L226 Difference]: Without dead ends: 1160 [2024-11-09 07:06:57,501 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=46, Invalid=136, Unknown=0, NotChecked=0, Total=182 [2024-11-09 07:06:57,502 INFO L432 NwaCegarLoop]: 70 mSDtfsCounter, 35 mSDsluCounter, 314 mSDsCounter, 0 mSdLazyCounter, 740 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 384 SdHoareTripleChecker+Invalid, 753 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 740 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2024-11-09 07:06:57,502 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 384 Invalid, 753 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 740 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2024-11-09 07:06:57,506 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1160 states. [2024-11-09 07:06:57,540 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1160 to 1146. [2024-11-09 07:06:57,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1146 states, 1005 states have (on average 2.346268656716418) internal successors, (2358), 1145 states have internal predecessors, (2358), 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) [2024-11-09 07:06:57,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1146 states to 1146 states and 2358 transitions. [2024-11-09 07:06:57,554 INFO L78 Accepts]: Start accepts. Automaton has 1146 states and 2358 transitions. Word has length 12 [2024-11-09 07:06:57,554 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 07:06:57,554 INFO L471 AbstractCegarLoop]: Abstraction has 1146 states and 2358 transitions. [2024-11-09 07:06:57,555 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 1.3333333333333333) internal successors, (12), 9 states have internal predecessors, (12), 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) [2024-11-09 07:06:57,555 INFO L276 IsEmpty]: Start isEmpty. Operand 1146 states and 2358 transitions. [2024-11-09 07:06:57,555 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2024-11-09 07:06:57,556 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 07:06:57,556 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 07:06:57,564 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef4b90d9-1fed-47f1-a962-68ab56c7533f/bin/utaipan-verify-YMUCfTKeje/mathsat -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 [2024-11-09 07:06:57,760 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef4b90d9-1fed-47f1-a962-68ab56c7533f/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-09 07:06:57,760 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr14REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr20REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr21REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 61 more)] === [2024-11-09 07:06:57,761 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 07:06:57,761 INFO L85 PathProgramCache]: Analyzing trace with hash 1547656601, now seen corresponding path program 1 times [2024-11-09 07:06:57,761 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-09 07:06:57,762 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2115785812] [2024-11-09 07:06:57,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:06:57,762 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 [2024-11-09 07:06:57,762 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef4b90d9-1fed-47f1-a962-68ab56c7533f/bin/utaipan-verify-YMUCfTKeje/mathsat [2024-11-09 07:06:57,763 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef4b90d9-1fed-47f1-a962-68ab56c7533f/bin/utaipan-verify-YMUCfTKeje/mathsat -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) [2024-11-09 07:06:57,766 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef4b90d9-1fed-47f1-a962-68ab56c7533f/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2024-11-09 07:06:58,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:06:58,080 INFO L255 TraceCheckSpWp]: Trace formula consists of 413 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-09 07:06:58,082 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 07:06:58,091 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 [2024-11-09 07:06:58,126 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 07:06:58,126 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 07:06:58,127 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-09 07:06:58,127 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2115785812] [2024-11-09 07:06:58,127 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2115785812] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 07:06:58,127 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 07:06:58,127 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 07:06:58,127 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [538788247] [2024-11-09 07:06:58,127 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 07:06:58,128 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 07:06:58,128 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-09 07:06:58,128 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 07:06:58,128 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-09 07:06:58,129 INFO L87 Difference]: Start difference. First operand 1146 states and 2358 transitions. Second operand has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 4 states have internal predecessors, (13), 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) [2024-11-09 07:06:58,670 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 07:06:58,670 INFO L93 Difference]: Finished difference Result 1146 states and 2358 transitions. [2024-11-09 07:06:58,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 07:06:58,671 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 4 states have internal predecessors, (13), 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 13 [2024-11-09 07:06:58,671 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 07:06:58,680 INFO L225 Difference]: With dead ends: 1146 [2024-11-09 07:06:58,680 INFO L226 Difference]: Without dead ends: 1144 [2024-11-09 07:06:58,682 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-09 07:06:58,682 INFO L432 NwaCegarLoop]: 73 mSDtfsCounter, 8 mSDsluCounter, 111 mSDsCounter, 0 mSdLazyCounter, 171 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 184 SdHoareTripleChecker+Invalid, 172 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 171 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-09 07:06:58,683 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 184 Invalid, 172 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 171 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-09 07:06:58,686 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1144 states. [2024-11-09 07:06:58,710 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1144 to 1144. [2024-11-09 07:06:58,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1144 states, 1005 states have (on average 2.3422885572139305) internal successors, (2354), 1143 states have internal predecessors, (2354), 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) [2024-11-09 07:06:58,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1144 states to 1144 states and 2354 transitions. [2024-11-09 07:06:58,721 INFO L78 Accepts]: Start accepts. Automaton has 1144 states and 2354 transitions. Word has length 13 [2024-11-09 07:06:58,722 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 07:06:58,722 INFO L471 AbstractCegarLoop]: Abstraction has 1144 states and 2354 transitions. [2024-11-09 07:06:58,722 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 4 states have internal predecessors, (13), 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) [2024-11-09 07:06:58,722 INFO L276 IsEmpty]: Start isEmpty. Operand 1144 states and 2354 transitions. [2024-11-09 07:06:58,723 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2024-11-09 07:06:58,723 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 07:06:58,723 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 07:06:58,731 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef4b90d9-1fed-47f1-a962-68ab56c7533f/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Ended with exit code 0 [2024-11-09 07:06:58,923 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef4b90d9-1fed-47f1-a962-68ab56c7533f/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-09 07:06:58,924 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr15REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr20REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr21REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 61 more)] === [2024-11-09 07:06:58,925 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 07:06:58,925 INFO L85 PathProgramCache]: Analyzing trace with hash 1547656602, now seen corresponding path program 1 times [2024-11-09 07:06:58,926 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-09 07:06:58,926 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1342507000] [2024-11-09 07:06:58,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:06:58,926 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 [2024-11-09 07:06:58,927 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef4b90d9-1fed-47f1-a962-68ab56c7533f/bin/utaipan-verify-YMUCfTKeje/mathsat [2024-11-09 07:06:58,930 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef4b90d9-1fed-47f1-a962-68ab56c7533f/bin/utaipan-verify-YMUCfTKeje/mathsat -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) [2024-11-09 07:06:58,932 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef4b90d9-1fed-47f1-a962-68ab56c7533f/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2024-11-09 07:06:59,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:06:59,250 INFO L255 TraceCheckSpWp]: Trace formula consists of 413 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-09 07:06:59,253 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 07:06:59,261 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 [2024-11-09 07:06:59,331 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 07:06:59,331 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 07:06:59,332 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-09 07:06:59,332 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1342507000] [2024-11-09 07:06:59,332 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1342507000] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 07:06:59,332 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 07:06:59,333 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 07:06:59,333 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [9555161] [2024-11-09 07:06:59,334 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 07:06:59,334 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 07:06:59,334 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-09 07:06:59,335 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 07:06:59,335 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-09 07:06:59,335 INFO L87 Difference]: Start difference. First operand 1144 states and 2354 transitions. Second operand has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 4 states have internal predecessors, (13), 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) [2024-11-09 07:06:59,951 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 07:06:59,951 INFO L93 Difference]: Finished difference Result 1144 states and 2354 transitions. [2024-11-09 07:06:59,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 07:06:59,952 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 4 states have internal predecessors, (13), 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 13 [2024-11-09 07:06:59,952 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 07:06:59,959 INFO L225 Difference]: With dead ends: 1144 [2024-11-09 07:06:59,959 INFO L226 Difference]: Without dead ends: 1142 [2024-11-09 07:06:59,960 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-09 07:06:59,961 INFO L432 NwaCegarLoop]: 71 mSDtfsCounter, 6 mSDsluCounter, 103 mSDsCounter, 0 mSdLazyCounter, 177 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 174 SdHoareTripleChecker+Invalid, 178 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 177 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-09 07:06:59,961 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 174 Invalid, 178 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 177 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-09 07:06:59,964 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1142 states. [2024-11-09 07:06:59,988 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1142 to 1142. [2024-11-09 07:06:59,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1142 states, 1005 states have (on average 2.3383084577114426) internal successors, (2350), 1141 states have internal predecessors, (2350), 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) [2024-11-09 07:06:59,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1142 states to 1142 states and 2350 transitions. [2024-11-09 07:06:59,999 INFO L78 Accepts]: Start accepts. Automaton has 1142 states and 2350 transitions. Word has length 13 [2024-11-09 07:07:00,000 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 07:07:00,000 INFO L471 AbstractCegarLoop]: Abstraction has 1142 states and 2350 transitions. [2024-11-09 07:07:00,000 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 4 states have internal predecessors, (13), 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) [2024-11-09 07:07:00,001 INFO L276 IsEmpty]: Start isEmpty. Operand 1142 states and 2350 transitions. [2024-11-09 07:07:00,001 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2024-11-09 07:07:00,001 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 07:07:00,001 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 07:07:00,012 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef4b90d9-1fed-47f1-a962-68ab56c7533f/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Ended with exit code 0 [2024-11-09 07:07:00,206 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef4b90d9-1fed-47f1-a962-68ab56c7533f/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-09 07:07:00,206 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr21REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr20REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr21REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 61 more)] === [2024-11-09 07:07:00,206 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 07:07:00,207 INFO L85 PathProgramCache]: Analyzing trace with hash -1358855365, now seen corresponding path program 1 times [2024-11-09 07:07:00,207 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-09 07:07:00,207 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [542249748] [2024-11-09 07:07:00,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:07:00,208 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 [2024-11-09 07:07:00,208 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef4b90d9-1fed-47f1-a962-68ab56c7533f/bin/utaipan-verify-YMUCfTKeje/mathsat [2024-11-09 07:07:00,209 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef4b90d9-1fed-47f1-a962-68ab56c7533f/bin/utaipan-verify-YMUCfTKeje/mathsat -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) [2024-11-09 07:07:00,214 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef4b90d9-1fed-47f1-a962-68ab56c7533f/bin/utaipan-verify-YMUCfTKeje/mathsat -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 [2024-11-09 07:07:00,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:07:00,590 INFO L255 TraceCheckSpWp]: Trace formula consists of 459 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-09 07:07:00,592 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 07:07:00,638 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 07:07:00,639 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 07:07:00,708 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 07:07:00,710 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-09 07:07:00,710 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [542249748] [2024-11-09 07:07:00,710 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [542249748] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 07:07:00,710 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [109772009] [2024-11-09 07:07:00,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:07:00,711 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-09 07:07:00,711 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef4b90d9-1fed-47f1-a962-68ab56c7533f/bin/utaipan-verify-YMUCfTKeje/cvc4 [2024-11-09 07:07:00,714 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef4b90d9-1fed-47f1-a962-68ab56c7533f/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-09 07:07:00,716 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef4b90d9-1fed-47f1-a962-68ab56c7533f/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt (17)] Waiting until timeout for monitored process [2024-11-09 07:07:01,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:07:01,541 INFO L255 TraceCheckSpWp]: Trace formula consists of 459 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-09 07:07:01,543 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 07:07:01,583 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 07:07:01,583 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 07:07:01,622 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 07:07:01,625 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [109772009] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 07:07:01,625 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1863199314] [2024-11-09 07:07:01,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:07:01,626 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 07:07:01,626 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef4b90d9-1fed-47f1-a962-68ab56c7533f/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 07:07:01,630 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef4b90d9-1fed-47f1-a962-68ab56c7533f/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 07:07:01,632 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef4b90d9-1fed-47f1-a962-68ab56c7533f/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-11-09 07:07:02,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:07:02,055 INFO L255 TraceCheckSpWp]: Trace formula consists of 459 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-09 07:07:02,056 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 07:07:02,088 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 07:07:02,088 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 07:07:02,124 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 07:07:02,124 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1863199314] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 07:07:02,125 INFO L185 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2024-11-09 07:07:02,125 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4, 4, 4, 4] total 6 [2024-11-09 07:07:02,125 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1085041795] [2024-11-09 07:07:02,125 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2024-11-09 07:07:02,126 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-09 07:07:02,126 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-09 07:07:02,126 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-09 07:07:02,126 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-11-09 07:07:02,127 INFO L87 Difference]: Start difference. First operand 1142 states and 2350 transitions. Second operand has 6 states, 6 states have (on average 5.333333333333333) internal successors, (32), 6 states have internal predecessors, (32), 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) [2024-11-09 07:07:02,684 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 07:07:02,685 INFO L93 Difference]: Finished difference Result 2321 states and 4745 transitions. [2024-11-09 07:07:02,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-09 07:07:02,685 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 5.333333333333333) internal successors, (32), 6 states have internal predecessors, (32), 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 20 [2024-11-09 07:07:02,686 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 07:07:02,696 INFO L225 Difference]: With dead ends: 2321 [2024-11-09 07:07:02,696 INFO L226 Difference]: Without dead ends: 1201 [2024-11-09 07:07:02,699 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 110 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2024-11-09 07:07:02,700 INFO L432 NwaCegarLoop]: 83 mSDtfsCounter, 48 mSDsluCounter, 226 mSDsCounter, 0 mSdLazyCounter, 185 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 309 SdHoareTripleChecker+Invalid, 190 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 185 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-09 07:07:02,700 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [48 Valid, 309 Invalid, 190 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 185 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-09 07:07:02,703 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1201 states. [2024-11-09 07:07:02,728 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1201 to 1190. [2024-11-09 07:07:02,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1190 states, 1053 states have (on average 2.2877492877492878) internal successors, (2409), 1189 states have internal predecessors, (2409), 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) [2024-11-09 07:07:02,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1190 states to 1190 states and 2409 transitions. [2024-11-09 07:07:02,740 INFO L78 Accepts]: Start accepts. Automaton has 1190 states and 2409 transitions. Word has length 20 [2024-11-09 07:07:02,741 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 07:07:02,741 INFO L471 AbstractCegarLoop]: Abstraction has 1190 states and 2409 transitions. [2024-11-09 07:07:02,742 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.333333333333333) internal successors, (32), 6 states have internal predecessors, (32), 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) [2024-11-09 07:07:02,742 INFO L276 IsEmpty]: Start isEmpty. Operand 1190 states and 2409 transitions. [2024-11-09 07:07:02,742 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2024-11-09 07:07:02,743 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 07:07:02,743 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 07:07:02,750 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef4b90d9-1fed-47f1-a962-68ab56c7533f/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt (17)] Ended with exit code 0 [2024-11-09 07:07:02,970 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef4b90d9-1fed-47f1-a962-68ab56c7533f/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2024-11-09 07:07:03,153 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef4b90d9-1fed-47f1-a962-68ab56c7533f/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2024-11-09 07:07:03,347 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef4b90d9-1fed-47f1-a962-68ab56c7533f/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt,18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef4b90d9-1fed-47f1-a962-68ab56c7533f/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true,16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef4b90d9-1fed-47f1-a962-68ab56c7533f/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-09 07:07:03,348 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr12REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr20REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr21REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 61 more)] === [2024-11-09 07:07:03,348 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 07:07:03,348 INFO L85 PathProgramCache]: Analyzing trace with hash -1012778997, now seen corresponding path program 1 times [2024-11-09 07:07:03,349 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-09 07:07:03,349 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1322210570] [2024-11-09 07:07:03,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:07:03,350 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 [2024-11-09 07:07:03,350 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef4b90d9-1fed-47f1-a962-68ab56c7533f/bin/utaipan-verify-YMUCfTKeje/mathsat [2024-11-09 07:07:03,351 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef4b90d9-1fed-47f1-a962-68ab56c7533f/bin/utaipan-verify-YMUCfTKeje/mathsat -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) [2024-11-09 07:07:03,353 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef4b90d9-1fed-47f1-a962-68ab56c7533f/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2024-11-09 07:07:04,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:07:04,871 INFO L255 TraceCheckSpWp]: Trace formula consists of 535 conjuncts, 27 conjuncts are in the unsatisfiable core [2024-11-09 07:07:04,874 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 07:07:04,880 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 [2024-11-09 07:07:05,066 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 23 treesize of output 1 [2024-11-09 07:07:05,195 INFO L349 Elim1Store]: treesize reduction 90, result has 30.2 percent of original size [2024-11-09 07:07:05,195 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 36 treesize of output 52 [2024-11-09 07:07:05,302 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 29 [2024-11-09 07:07:05,376 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 29 [2024-11-09 07:07:05,411 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 21 [2024-11-09 07:07:05,474 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 19 treesize of output 11 [2024-11-09 07:07:05,528 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 2 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 07:07:05,528 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 07:07:05,605 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_712 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (_ bv1 1) (select |c_#valid| (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_INIT_LIST_HEAD_~list#1.base| v_ArrVal_712) |c_~#c~0.base|) (bvadd |c_~#c~0.offset| (bvmul (_ bv8 32) |c_ULTIMATE.start_main_~i~0#1|))))))) is different from false [2024-11-09 07:07:05,743 WARN L851 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_new_~p~0#1.base_47| (_ BitVec 32)) (v_ArrVal_709 (_ BitVec 1)) (v_ArrVal_712 (Array (_ BitVec 32) (_ BitVec 32)))) (or (not (= (_ bv0 1) (select |c_#valid| |v_ULTIMATE.start_new_~p~0#1.base_47|))) (= (_ bv0 1) (bvadd (_ bv1 1) (select (store |c_#valid| |v_ULTIMATE.start_new_~p~0#1.base_47| v_ArrVal_709) (select (select (store |c_#memory_$Pointer$.base| |v_ULTIMATE.start_new_~p~0#1.base_47| v_ArrVal_712) |c_~#c~0.base|) (bvadd |c_~#c~0.offset| (bvmul (_ bv8 32) |c_ULTIMATE.start_main_~i~0#1|)))))))) is different from false [2024-11-09 07:07:05,793 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 07:07:05,794 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 30 [2024-11-09 07:07:05,818 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 07:07:05,818 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 52 treesize of output 55 [2024-11-09 07:07:05,829 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 20 treesize of output 14 [2024-11-09 07:07:08,394 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 2 not checked. [2024-11-09 07:07:08,394 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-09 07:07:08,394 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1322210570] [2024-11-09 07:07:08,395 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1322210570] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 07:07:08,395 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [2114639457] [2024-11-09 07:07:08,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:07:08,395 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-09 07:07:08,395 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef4b90d9-1fed-47f1-a962-68ab56c7533f/bin/utaipan-verify-YMUCfTKeje/cvc4 [2024-11-09 07:07:08,399 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef4b90d9-1fed-47f1-a962-68ab56c7533f/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-09 07:07:08,401 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef4b90d9-1fed-47f1-a962-68ab56c7533f/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt (20)] Waiting until timeout for monitored process [2024-11-09 07:07:21,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:07:21,484 INFO L255 TraceCheckSpWp]: Trace formula consists of 535 conjuncts, 34 conjuncts are in the unsatisfiable core [2024-11-09 07:07:21,488 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 07:07:21,604 INFO L349 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2024-11-09 07:07:21,605 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 [2024-11-09 07:07:22,025 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 23 treesize of output 1 [2024-11-09 07:07:22,283 INFO L349 Elim1Store]: treesize reduction 132, result has 27.5 percent of original size [2024-11-09 07:07:22,283 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 8 case distinctions, treesize of input 43 treesize of output 68 [2024-11-09 07:07:22,450 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 29 [2024-11-09 07:07:22,629 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 29 [2024-11-09 07:07:22,712 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 21 [2024-11-09 07:07:22,835 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 19 treesize of output 11 [2024-11-09 07:07:22,927 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 2 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 07:07:22,927 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 07:07:22,951 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_815 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (_ bv1 1) (select |c_#valid| (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_INIT_LIST_HEAD_~list#1.base| v_ArrVal_815) |c_~#c~0.base|) (bvadd |c_~#c~0.offset| (bvmul (_ bv8 32) |c_ULTIMATE.start_main_~i~0#1|))))))) is different from false [2024-11-09 07:07:22,978 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_815 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (_ bv1 1) (select |c_#valid| (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_new_~p~0#1.base| v_ArrVal_815) |c_~#c~0.base|) (bvadd |c_~#c~0.offset| (bvmul (_ bv8 32) |c_ULTIMATE.start_main_~i~0#1|))))))) is different from false [2024-11-09 07:07:24,832 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 07:07:24,833 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 30 [2024-11-09 07:07:24,862 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 07:07:24,862 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 52 treesize of output 55 [2024-11-09 07:07:24,879 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 20 treesize of output 14 [2024-11-09 07:07:26,540 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 2 not checked. [2024-11-09 07:07:26,540 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [2114639457] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 07:07:26,540 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2143002506] [2024-11-09 07:07:26,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:07:26,540 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 07:07:26,541 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef4b90d9-1fed-47f1-a962-68ab56c7533f/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 07:07:26,542 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef4b90d9-1fed-47f1-a962-68ab56c7533f/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 07:07:26,543 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef4b90d9-1fed-47f1-a962-68ab56c7533f/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2024-11-09 07:07:27,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:07:27,041 INFO L255 TraceCheckSpWp]: Trace formula consists of 535 conjuncts, 28 conjuncts are in the unsatisfiable core [2024-11-09 07:07:27,044 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 07:07:27,346 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 23 treesize of output 1 [2024-11-09 07:07:27,457 INFO L349 Elim1Store]: treesize reduction 90, result has 30.2 percent of original size [2024-11-09 07:07:27,458 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 36 treesize of output 52 [2024-11-09 07:07:27,495 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 29 [2024-11-09 07:07:27,524 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 29 [2024-11-09 07:07:27,569 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 21 [2024-11-09 07:07:27,587 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 19 treesize of output 11 [2024-11-09 07:07:27,595 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 07:07:27,595 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 07:07:27,618 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_917 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (_ bv1 1) (select |c_#valid| (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_INIT_LIST_HEAD_~list#1.base| v_ArrVal_917) |c_~#c~0.base|) (bvadd |c_~#c~0.offset| (bvmul (_ bv8 32) |c_ULTIMATE.start_main_~i~0#1|))))))) is different from false [2024-11-09 07:07:27,647 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_917 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (_ bv1 1) (select |c_#valid| (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_new_~p~0#1.base| v_ArrVal_917) |c_~#c~0.base|) (bvadd |c_~#c~0.offset| (bvmul (_ bv8 32) |c_ULTIMATE.start_main_~i~0#1|))))))) is different from false [2024-11-09 07:07:27,848 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 07:07:27,848 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 30 [2024-11-09 07:07:27,876 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 07:07:27,876 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 52 treesize of output 55 [2024-11-09 07:07:27,888 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 20 treesize of output 14 [2024-11-09 07:07:32,840 INFO L349 Elim1Store]: treesize reduction 7, result has 96.7 percent of original size [2024-11-09 07:07:32,841 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 103 treesize of output 290 [2024-11-09 07:07:33,570 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 2 not checked. [2024-11-09 07:07:33,570 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2143002506] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 07:07:33,570 INFO L185 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2024-11-09 07:07:33,571 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8, 8, 10, 10] total 32 [2024-11-09 07:07:33,571 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [243281213] [2024-11-09 07:07:33,571 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2024-11-09 07:07:33,572 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2024-11-09 07:07:33,572 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-09 07:07:33,573 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2024-11-09 07:07:33,573 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=604, Unknown=17, NotChecked=330, Total=1056 [2024-11-09 07:07:33,574 INFO L87 Difference]: Start difference. First operand 1190 states and 2409 transitions. Second operand has 33 states, 32 states have (on average 2.75) internal successors, (88), 33 states have internal predecessors, (88), 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) [2024-11-09 07:07:39,498 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 07:07:39,498 INFO L93 Difference]: Finished difference Result 1193 states and 2409 transitions. [2024-11-09 07:07:39,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-09 07:07:39,499 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 32 states have (on average 2.75) internal successors, (88), 33 states have internal predecessors, (88), 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 22 [2024-11-09 07:07:39,499 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 07:07:39,507 INFO L225 Difference]: With dead ends: 1193 [2024-11-09 07:07:39,507 INFO L226 Difference]: Without dead ends: 1192 [2024-11-09 07:07:39,509 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 90 SyntacticMatches, 7 SemanticMatches, 38 ConstructedPredicates, 6 IntricatePredicates, 1 DeprecatedPredicates, 352 ImplicationChecksByTransitivity, 7.5s TimeCoverageRelationStatistics Valid=199, Invalid=930, Unknown=17, NotChecked=414, Total=1560 [2024-11-09 07:07:39,509 INFO L432 NwaCegarLoop]: 49 mSDtfsCounter, 136 mSDsluCounter, 819 mSDsCounter, 0 mSdLazyCounter, 1223 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 136 SdHoareTripleChecker+Valid, 868 SdHoareTripleChecker+Invalid, 2231 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 1223 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 991 IncrementalHoareTripleChecker+Unchecked, 5.0s IncrementalHoareTripleChecker+Time [2024-11-09 07:07:39,510 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [136 Valid, 868 Invalid, 2231 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 1223 Invalid, 0 Unknown, 991 Unchecked, 5.0s Time] [2024-11-09 07:07:39,512 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1192 states. [2024-11-09 07:07:39,530 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1192 to 1189. [2024-11-09 07:07:39,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1189 states, 1053 states have (on average 2.282051282051282) internal successors, (2403), 1188 states have internal predecessors, (2403), 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) [2024-11-09 07:07:39,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1189 states to 1189 states and 2403 transitions. [2024-11-09 07:07:39,539 INFO L78 Accepts]: Start accepts. Automaton has 1189 states and 2403 transitions. Word has length 22 [2024-11-09 07:07:39,540 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 07:07:39,540 INFO L471 AbstractCegarLoop]: Abstraction has 1189 states and 2403 transitions. [2024-11-09 07:07:39,540 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 32 states have (on average 2.75) internal successors, (88), 33 states have internal predecessors, (88), 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) [2024-11-09 07:07:39,540 INFO L276 IsEmpty]: Start isEmpty. Operand 1189 states and 2403 transitions. [2024-11-09 07:07:39,541 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2024-11-09 07:07:39,541 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 07:07:39,541 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 07:07:39,552 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef4b90d9-1fed-47f1-a962-68ab56c7533f/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2024-11-09 07:07:39,754 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef4b90d9-1fed-47f1-a962-68ab56c7533f/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt (20)] Forceful destruction successful, exit code 0 [2024-11-09 07:07:39,962 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef4b90d9-1fed-47f1-a962-68ab56c7533f/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2024-11-09 07:07:40,142 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef4b90d9-1fed-47f1-a962-68ab56c7533f/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef4b90d9-1fed-47f1-a962-68ab56c7533f/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt,21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef4b90d9-1fed-47f1-a962-68ab56c7533f/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 07:07:40,142 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr20REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr21REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 61 more)] === [2024-11-09 07:07:40,142 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 07:07:40,142 INFO L85 PathProgramCache]: Analyzing trace with hash -1012778996, now seen corresponding path program 1 times [2024-11-09 07:07:40,143 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-09 07:07:40,143 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1546976701] [2024-11-09 07:07:40,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:07:40,143 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 [2024-11-09 07:07:40,143 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef4b90d9-1fed-47f1-a962-68ab56c7533f/bin/utaipan-verify-YMUCfTKeje/mathsat [2024-11-09 07:07:40,144 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef4b90d9-1fed-47f1-a962-68ab56c7533f/bin/utaipan-verify-YMUCfTKeje/mathsat -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) [2024-11-09 07:07:40,146 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef4b90d9-1fed-47f1-a962-68ab56c7533f/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2024-11-09 07:07:41,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:07:41,415 INFO L255 TraceCheckSpWp]: Trace formula consists of 535 conjuncts, 43 conjuncts are in the unsatisfiable core [2024-11-09 07:07:41,419 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 07:07:41,456 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 [2024-11-09 07:07:41,470 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-11-09 07:07:41,912 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 13 treesize of output 9 [2024-11-09 07:07:41,927 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 19 treesize of output 1 [2024-11-09 07:07:42,098 INFO L349 Elim1Store]: treesize reduction 25, result has 45.7 percent of original size [2024-11-09 07:07:42,099 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 25 [2024-11-09 07:07:42,169 INFO L349 Elim1Store]: treesize reduction 28, result has 34.9 percent of original size [2024-11-09 07:07:42,169 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 26 treesize of output 28 [2024-11-09 07:07:42,256 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2024-11-09 07:07:42,275 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 23 [2024-11-09 07:07:42,385 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 23 [2024-11-09 07:07:42,411 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2024-11-09 07:07:42,454 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 23 [2024-11-09 07:07:42,463 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2024-11-09 07:07:42,548 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 21 treesize of output 9 [2024-11-09 07:07:42,588 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 2 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 07:07:42,588 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 07:07:43,040 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse0 (bvadd |c_~#c~0.offset| (bvmul (_ bv8 32) |c_ULTIMATE.start_main_~i~0#1|)))) (and (forall ((v_ArrVal_1024 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_1025 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (_ bv8 32) (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_new_~p~0#1.base| v_ArrVal_1024) |c_~#c~0.base|) .cse0)) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_new_~p~0#1.base| v_ArrVal_1025) |c_~#c~0.base|) .cse0)))) (forall ((v_ArrVal_1024 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse1 (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_new_~p~0#1.base| v_ArrVal_1024) |c_~#c~0.base|) .cse0))) (bvule (bvadd (_ bv4 32) .cse1) (bvadd (_ bv8 32) .cse1)))))) is different from false [2024-11-09 07:07:43,373 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 07:07:43,374 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 48 treesize of output 49 [2024-11-09 07:07:43,394 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 07:07:43,394 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 40 treesize of output 41 [2024-11-09 07:07:43,437 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 07:07:43,438 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 74 treesize of output 77 [2024-11-09 07:07:43,504 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 07:07:43,504 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 118 treesize of output 113 [2024-11-09 07:07:43,525 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 26 treesize of output 20 [2024-11-09 07:07:43,541 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 20 treesize of output 14 [2024-11-09 07:07:44,600 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 07:07:44,601 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 45 treesize of output 38 [2024-11-09 07:07:44,629 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 07:07:44,629 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 60 treesize of output 55 [2024-11-09 07:07:44,643 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 23 treesize of output 11 [2024-11-09 07:07:48,905 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 1 not checked. [2024-11-09 07:07:48,905 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-09 07:07:48,905 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1546976701] [2024-11-09 07:07:48,905 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1546976701] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 07:07:48,905 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1735954008] [2024-11-09 07:07:48,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:07:48,906 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-09 07:07:48,906 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef4b90d9-1fed-47f1-a962-68ab56c7533f/bin/utaipan-verify-YMUCfTKeje/cvc4 [2024-11-09 07:07:48,909 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef4b90d9-1fed-47f1-a962-68ab56c7533f/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-09 07:07:48,911 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef4b90d9-1fed-47f1-a962-68ab56c7533f/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt (23)] Waiting until timeout for monitored process [2024-11-09 07:08:05,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:08:06,074 INFO L255 TraceCheckSpWp]: Trace formula consists of 535 conjuncts, 46 conjuncts are in the unsatisfiable core [2024-11-09 07:08:06,079 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 07:08:06,173 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 [2024-11-09 07:08:06,180 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 [2024-11-09 07:08:06,587 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 19 treesize of output 1 [2024-11-09 07:08:06,593 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 13 treesize of output 9 [2024-11-09 07:08:06,769 INFO L349 Elim1Store]: treesize reduction 25, result has 45.7 percent of original size [2024-11-09 07:08:06,769 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 25 [2024-11-09 07:08:06,823 INFO L349 Elim1Store]: treesize reduction 28, result has 34.9 percent of original size [2024-11-09 07:08:06,823 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 26 treesize of output 28 [2024-11-09 07:08:06,958 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 23 [2024-11-09 07:08:06,972 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2024-11-09 07:08:07,090 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 23 [2024-11-09 07:08:07,107 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2024-11-09 07:08:07,146 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 23 [2024-11-09 07:08:07,156 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2024-11-09 07:08:07,276 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 21 treesize of output 9 [2024-11-09 07:08:07,281 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 2 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 07:08:07,281 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 07:08:07,331 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse1 (bvadd |c_~#c~0.offset| (bvmul (_ bv8 32) |c_ULTIMATE.start_main_~i~0#1|)))) (and (forall ((v_ArrVal_1132 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_INIT_LIST_HEAD_~list#1.base| v_ArrVal_1132) |c_~#c~0.base|) .cse1))) (bvule (bvadd (_ bv4 32) .cse0) (bvadd (_ bv8 32) .cse0)))) (forall ((v_ArrVal_1133 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_1132 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (_ bv8 32) (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_INIT_LIST_HEAD_~list#1.base| v_ArrVal_1132) |c_~#c~0.base|) .cse1)) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_INIT_LIST_HEAD_~list#1.base| v_ArrVal_1133) |c_~#c~0.base|) .cse1)))))) is different from false [2024-11-09 07:08:07,372 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse0 (bvadd |c_~#c~0.offset| (bvmul (_ bv8 32) |c_ULTIMATE.start_main_~i~0#1|)))) (and (forall ((v_ArrVal_1133 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_1132 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (_ bv8 32) (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_new_~p~0#1.base| v_ArrVal_1132) |c_~#c~0.base|) .cse0)) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_new_~p~0#1.base| v_ArrVal_1133) |c_~#c~0.base|) .cse0)))) (forall ((v_ArrVal_1132 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse1 (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_new_~p~0#1.base| v_ArrVal_1132) |c_~#c~0.base|) .cse0))) (bvule (bvadd (_ bv4 32) .cse1) (bvadd (_ bv8 32) .cse1)))))) is different from false [2024-11-09 07:08:07,805 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 07:08:07,805 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 48 treesize of output 49 [2024-11-09 07:08:07,822 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 07:08:07,822 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 40 treesize of output 41 [2024-11-09 07:08:07,857 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 07:08:07,858 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 74 treesize of output 77 [2024-11-09 07:08:07,906 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 07:08:07,906 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 118 treesize of output 113 [2024-11-09 07:08:07,919 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 26 treesize of output 20 [2024-11-09 07:08:07,934 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 20 treesize of output 14 [2024-11-09 07:08:08,775 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 07:08:08,775 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 45 treesize of output 38 [2024-11-09 07:08:08,809 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 07:08:08,809 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 60 treesize of output 55 [2024-11-09 07:08:08,824 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 23 treesize of output 11 [2024-11-09 07:08:12,088 INFO L349 Elim1Store]: treesize reduction 30, result has 3.2 percent of original size [2024-11-09 07:08:12,088 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 74 treesize of output 1 [2024-11-09 07:08:12,090 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 3 not checked. [2024-11-09 07:08:12,090 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1735954008] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 07:08:12,091 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1385533254] [2024-11-09 07:08:12,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:08:12,091 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 07:08:12,091 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef4b90d9-1fed-47f1-a962-68ab56c7533f/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 07:08:12,093 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef4b90d9-1fed-47f1-a962-68ab56c7533f/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 07:08:12,096 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef4b90d9-1fed-47f1-a962-68ab56c7533f/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2024-11-09 07:08:12,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:08:12,593 INFO L255 TraceCheckSpWp]: Trace formula consists of 535 conjuncts, 41 conjuncts are in the unsatisfiable core [2024-11-09 07:08:12,597 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 07:08:12,601 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 [2024-11-09 07:08:13,477 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 23 treesize of output 1 [2024-11-09 07:08:13,488 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 11 [2024-11-09 07:08:13,730 INFO L349 Elim1Store]: treesize reduction 30, result has 36.2 percent of original size [2024-11-09 07:08:13,730 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 28 treesize of output 30 [2024-11-09 07:08:13,746 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 17 [2024-11-09 07:08:13,870 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 15 [2024-11-09 07:08:13,884 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 27 [2024-11-09 07:08:14,029 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 15 [2024-11-09 07:08:14,046 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 27 [2024-11-09 07:08:14,079 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 19 [2024-11-09 07:08:14,091 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2024-11-09 07:08:14,240 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 17 treesize of output 9 [2024-11-09 07:08:14,247 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 2 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 07:08:14,248 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 07:08:14,298 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse1 (bvadd |c_~#c~0.offset| (bvmul (_ bv8 32) |c_ULTIMATE.start_main_~i~0#1|)))) (and (forall ((v_ArrVal_1240 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_INIT_LIST_HEAD_~list#1.base| v_ArrVal_1240) |c_~#c~0.base|) .cse1))) (bvule (bvadd (_ bv4 32) .cse0) (bvadd (_ bv8 32) .cse0)))) (forall ((v_ArrVal_1240 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_1239 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (_ bv8 32) (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_INIT_LIST_HEAD_~list#1.base| v_ArrVal_1240) |c_~#c~0.base|) .cse1)) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_INIT_LIST_HEAD_~list#1.base| v_ArrVal_1239) |c_~#c~0.base|) .cse1)))))) is different from false [2024-11-09 07:08:14,341 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse0 (bvadd |c_~#c~0.offset| (bvmul (_ bv8 32) |c_ULTIMATE.start_main_~i~0#1|)))) (and (forall ((v_ArrVal_1240 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_1239 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_new_~p~0#1.base| v_ArrVal_1240) |c_~#c~0.base|) .cse0) (_ bv8 32)) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_new_~p~0#1.base| v_ArrVal_1239) |c_~#c~0.base|) .cse0)))) (forall ((v_ArrVal_1240 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse1 (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_new_~p~0#1.base| v_ArrVal_1240) |c_~#c~0.base|) .cse0))) (bvule (bvadd .cse1 (_ bv4 32)) (bvadd .cse1 (_ bv8 32))))))) is different from false [2024-11-09 07:08:14,408 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse1 (bvadd |c_~#c~0.offset| (bvmul (_ bv8 32) |c_ULTIMATE.start_main_~i~0#1|)))) (and (forall ((|v_ULTIMATE.start_new_~p~0#1.base_60| (_ BitVec 32))) (or (not (= (_ bv0 1) (select |c_#valid| |v_ULTIMATE.start_new_~p~0#1.base_60|))) (forall ((v_ArrVal_1240 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (store |c_#memory_$Pointer$.offset| |v_ULTIMATE.start_new_~p~0#1.base_60| v_ArrVal_1240) |c_~#c~0.base|) .cse1))) (bvule (bvadd (_ bv4 32) .cse0) (bvadd (_ bv8 32) .cse0)))))) (forall ((|v_ULTIMATE.start_new_~p~0#1.base_60| (_ BitVec 32))) (or (not (= (_ bv0 1) (select |c_#valid| |v_ULTIMATE.start_new_~p~0#1.base_60|))) (forall ((v_ArrVal_1234 (_ BitVec 32)) (v_ArrVal_1240 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_1239 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (_ bv8 32) (select (select (store |c_#memory_$Pointer$.offset| |v_ULTIMATE.start_new_~p~0#1.base_60| v_ArrVal_1240) |c_~#c~0.base|) .cse1)) (select (store |c_#length| |v_ULTIMATE.start_new_~p~0#1.base_60| v_ArrVal_1234) (select (select (store |c_#memory_$Pointer$.base| |v_ULTIMATE.start_new_~p~0#1.base_60| v_ArrVal_1239) |c_~#c~0.base|) .cse1)))))))) is different from false [2024-11-09 07:08:14,452 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 07:08:14,452 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 45 treesize of output 38 [2024-11-09 07:08:14,476 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 07:08:14,476 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 60 treesize of output 55 [2024-11-09 07:08:14,487 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 23 treesize of output 11 [2024-11-09 07:08:14,567 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 07:08:14,568 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 48 treesize of output 49 [2024-11-09 07:08:14,581 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 07:08:14,581 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 40 treesize of output 41 [2024-11-09 07:08:14,584 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-09 07:08:14,608 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 07:08:14,608 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 41 [2024-11-09 07:08:14,613 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-09 07:08:14,639 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 07:08:14,640 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 27 treesize of output 30 [2024-11-09 07:08:17,025 INFO L349 Elim1Store]: treesize reduction 10, result has 90.1 percent of original size [2024-11-09 07:08:17,026 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 76 treesize of output 156 [2024-11-09 07:08:20,639 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 3 not checked. [2024-11-09 07:08:20,640 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1385533254] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 07:08:20,640 INFO L185 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2024-11-09 07:08:20,640 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8, 8, 11, 11] total 41 [2024-11-09 07:08:20,640 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1115863072] [2024-11-09 07:08:20,640 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2024-11-09 07:08:20,641 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2024-11-09 07:08:20,641 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-09 07:08:20,642 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2024-11-09 07:08:20,643 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=150, Invalid=1121, Unknown=13, NotChecked=438, Total=1722 [2024-11-09 07:08:20,643 INFO L87 Difference]: Start difference. First operand 1189 states and 2403 transitions. Second operand has 42 states, 41 states have (on average 2.4634146341463414) internal successors, (101), 42 states have internal predecessors, (101), 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) [2024-11-09 07:08:32,272 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 07:08:32,272 INFO L93 Difference]: Finished difference Result 1192 states and 2403 transitions. [2024-11-09 07:08:32,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-09 07:08:32,274 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 41 states have (on average 2.4634146341463414) internal successors, (101), 42 states have internal predecessors, (101), 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 22 [2024-11-09 07:08:32,274 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 07:08:32,281 INFO L225 Difference]: With dead ends: 1192 [2024-11-09 07:08:32,281 INFO L226 Difference]: Without dead ends: 1191 [2024-11-09 07:08:32,282 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 137 GetRequests, 83 SyntacticMatches, 5 SemanticMatches, 49 ConstructedPredicates, 6 IntricatePredicates, 0 DeprecatedPredicates, 661 ImplicationChecksByTransitivity, 9.5s TimeCoverageRelationStatistics Valid=295, Invalid=1696, Unknown=13, NotChecked=546, Total=2550 [2024-11-09 07:08:32,283 INFO L432 NwaCegarLoop]: 62 mSDtfsCounter, 231 mSDsluCounter, 702 mSDsCounter, 0 mSdLazyCounter, 1530 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 231 SdHoareTripleChecker+Valid, 764 SdHoareTripleChecker+Invalid, 2333 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 1530 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 788 IncrementalHoareTripleChecker+Unchecked, 9.2s IncrementalHoareTripleChecker+Time [2024-11-09 07:08:32,283 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [231 Valid, 764 Invalid, 2333 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 1530 Invalid, 0 Unknown, 788 Unchecked, 9.2s Time] [2024-11-09 07:08:32,285 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1191 states. [2024-11-09 07:08:32,305 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1191 to 1189. [2024-11-09 07:08:32,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1189 states, 1053 states have (on average 2.2763532763532766) internal successors, (2397), 1188 states have internal predecessors, (2397), 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) [2024-11-09 07:08:32,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1189 states to 1189 states and 2397 transitions. [2024-11-09 07:08:32,315 INFO L78 Accepts]: Start accepts. Automaton has 1189 states and 2397 transitions. Word has length 22 [2024-11-09 07:08:32,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 07:08:32,316 INFO L471 AbstractCegarLoop]: Abstraction has 1189 states and 2397 transitions. [2024-11-09 07:08:32,316 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 41 states have (on average 2.4634146341463414) internal successors, (101), 42 states have internal predecessors, (101), 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) [2024-11-09 07:08:32,316 INFO L276 IsEmpty]: Start isEmpty. Operand 1189 states and 2397 transitions. [2024-11-09 07:08:32,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2024-11-09 07:08:32,317 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 07:08:32,318 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 07:08:32,338 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef4b90d9-1fed-47f1-a962-68ab56c7533f/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt (23)] Ended with exit code 0 [2024-11-09 07:08:32,556 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef4b90d9-1fed-47f1-a962-68ab56c7533f/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2024-11-09 07:08:32,731 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef4b90d9-1fed-47f1-a962-68ab56c7533f/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (22)] Ended with exit code 0 [2024-11-09 07:08:32,920 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef4b90d9-1fed-47f1-a962-68ab56c7533f/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt,24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef4b90d9-1fed-47f1-a962-68ab56c7533f/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true,22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef4b90d9-1fed-47f1-a962-68ab56c7533f/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-09 07:08:32,921 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr21REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr20REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr21REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 61 more)] === [2024-11-09 07:08:32,921 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 07:08:32,921 INFO L85 PathProgramCache]: Analyzing trace with hash 493500245, now seen corresponding path program 2 times [2024-11-09 07:08:32,922 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-09 07:08:32,922 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [314567938] [2024-11-09 07:08:32,922 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-09 07:08:32,922 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 [2024-11-09 07:08:32,923 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef4b90d9-1fed-47f1-a962-68ab56c7533f/bin/utaipan-verify-YMUCfTKeje/mathsat [2024-11-09 07:08:32,924 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef4b90d9-1fed-47f1-a962-68ab56c7533f/bin/utaipan-verify-YMUCfTKeje/mathsat -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) [2024-11-09 07:08:32,926 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef4b90d9-1fed-47f1-a962-68ab56c7533f/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (25)] Waiting until timeout for monitored process [2024-11-09 07:08:34,169 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-09 07:08:34,169 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 07:08:34,197 INFO L255 TraceCheckSpWp]: Trace formula consists of 864 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-09 07:08:34,200 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 07:08:34,405 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 1 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 07:08:34,405 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 07:08:34,758 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 1 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 07:08:34,758 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-09 07:08:34,758 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [314567938] [2024-11-09 07:08:34,758 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [314567938] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 07:08:34,758 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [400940094] [2024-11-09 07:08:34,758 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-09 07:08:34,759 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-09 07:08:34,759 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef4b90d9-1fed-47f1-a962-68ab56c7533f/bin/utaipan-verify-YMUCfTKeje/cvc4 [2024-11-09 07:08:34,760 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef4b90d9-1fed-47f1-a962-68ab56c7533f/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-09 07:08:34,762 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef4b90d9-1fed-47f1-a962-68ab56c7533f/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt (26)] Waiting until timeout for monitored process [2024-11-09 07:08:36,393 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-09 07:08:36,393 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 07:08:36,431 INFO L255 TraceCheckSpWp]: Trace formula consists of 864 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-09 07:08:36,432 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 07:08:36,525 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 1 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 07:08:36,525 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 07:08:36,659 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 1 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 07:08:36,659 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [400940094] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 07:08:36,659 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1614305432] [2024-11-09 07:08:36,659 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-09 07:08:36,659 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 07:08:36,659 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef4b90d9-1fed-47f1-a962-68ab56c7533f/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 07:08:36,661 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef4b90d9-1fed-47f1-a962-68ab56c7533f/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 07:08:36,663 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef4b90d9-1fed-47f1-a962-68ab56c7533f/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2024-11-09 07:08:37,190 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-09 07:08:37,190 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 07:08:37,220 INFO L255 TraceCheckSpWp]: Trace formula consists of 864 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-09 07:08:37,222 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 07:08:37,431 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2024-11-09 07:08:37,432 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 07:08:37,657 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2024-11-09 07:08:37,658 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1614305432] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 07:08:37,658 INFO L185 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2024-11-09 07:08:37,658 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7, 7, 3, 3] total 16 [2024-11-09 07:08:37,658 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1173268487] [2024-11-09 07:08:37,658 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2024-11-09 07:08:37,659 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-09 07:08:37,659 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-09 07:08:37,659 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-09 07:08:37,660 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=182, Unknown=0, NotChecked=0, Total=240 [2024-11-09 07:08:37,660 INFO L87 Difference]: Start difference. First operand 1189 states and 2397 transitions. Second operand has 16 states, 16 states have (on average 8.0) internal successors, (128), 16 states have internal predecessors, (128), 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) [2024-11-09 07:08:42,974 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 07:08:42,974 INFO L93 Difference]: Finished difference Result 2730 states and 5170 transitions. [2024-11-09 07:08:42,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2024-11-09 07:08:42,975 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 8.0) internal successors, (128), 16 states have internal predecessors, (128), 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 50 [2024-11-09 07:08:42,976 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 07:08:42,987 INFO L225 Difference]: With dead ends: 2730 [2024-11-09 07:08:42,987 INFO L226 Difference]: Without dead ends: 1587 [2024-11-09 07:08:42,991 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 336 GetRequests, 281 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 850 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=809, Invalid=2383, Unknown=0, NotChecked=0, Total=3192 [2024-11-09 07:08:42,992 INFO L432 NwaCegarLoop]: 119 mSDtfsCounter, 976 mSDsluCounter, 801 mSDsCounter, 0 mSdLazyCounter, 793 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 976 SdHoareTripleChecker+Valid, 920 SdHoareTripleChecker+Invalid, 806 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 793 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2024-11-09 07:08:42,993 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [976 Valid, 920 Invalid, 806 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 793 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2024-11-09 07:08:42,996 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1587 states. [2024-11-09 07:08:43,023 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1587 to 1523. [2024-11-09 07:08:43,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1523 states, 1387 states have (on average 2.0115356885364095) internal successors, (2790), 1522 states have internal predecessors, (2790), 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) [2024-11-09 07:08:43,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1523 states to 1523 states and 2790 transitions. [2024-11-09 07:08:43,037 INFO L78 Accepts]: Start accepts. Automaton has 1523 states and 2790 transitions. Word has length 50 [2024-11-09 07:08:43,038 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 07:08:43,038 INFO L471 AbstractCegarLoop]: Abstraction has 1523 states and 2790 transitions. [2024-11-09 07:08:43,038 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 8.0) internal successors, (128), 16 states have internal predecessors, (128), 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) [2024-11-09 07:08:43,038 INFO L276 IsEmpty]: Start isEmpty. Operand 1523 states and 2790 transitions. [2024-11-09 07:08:43,041 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2024-11-09 07:08:43,041 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 07:08:43,042 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 2, 2, 1, 1, 1, 1, 1, 1] [2024-11-09 07:08:43,056 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef4b90d9-1fed-47f1-a962-68ab56c7533f/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt (26)] Ended with exit code 0 [2024-11-09 07:08:43,270 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef4b90d9-1fed-47f1-a962-68ab56c7533f/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Forceful destruction successful, exit code 0 [2024-11-09 07:08:43,454 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef4b90d9-1fed-47f1-a962-68ab56c7533f/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (25)] Ended with exit code 0 [2024-11-09 07:08:43,642 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef4b90d9-1fed-47f1-a962-68ab56c7533f/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt,27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef4b90d9-1fed-47f1-a962-68ab56c7533f/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true,25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef4b90d9-1fed-47f1-a962-68ab56c7533f/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-09 07:08:43,643 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr20REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr21REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 61 more)] === [2024-11-09 07:08:43,643 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 07:08:43,643 INFO L85 PathProgramCache]: Analyzing trace with hash 2037994889, now seen corresponding path program 1 times [2024-11-09 07:08:43,644 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-09 07:08:43,645 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [777069044] [2024-11-09 07:08:43,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:08:43,645 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 [2024-11-09 07:08:43,645 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef4b90d9-1fed-47f1-a962-68ab56c7533f/bin/utaipan-verify-YMUCfTKeje/mathsat [2024-11-09 07:08:43,646 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef4b90d9-1fed-47f1-a962-68ab56c7533f/bin/utaipan-verify-YMUCfTKeje/mathsat -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) [2024-11-09 07:08:43,647 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef4b90d9-1fed-47f1-a962-68ab56c7533f/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (28)] Waiting until timeout for monitored process [2024-11-09 07:08:46,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:08:46,253 INFO L255 TraceCheckSpWp]: Trace formula consists of 1676 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-09 07:08:46,257 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 07:08:46,861 INFO L134 CoverageAnalysis]: Checked inductivity of 463 backedges. 3 proven. 460 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 07:08:46,861 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 07:08:48,033 INFO L134 CoverageAnalysis]: Checked inductivity of 463 backedges. 3 proven. 460 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 07:08:48,033 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-09 07:08:48,034 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [777069044] [2024-11-09 07:08:48,034 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [777069044] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 07:08:48,034 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1374818229] [2024-11-09 07:08:48,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:08:48,034 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-09 07:08:48,034 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef4b90d9-1fed-47f1-a962-68ab56c7533f/bin/utaipan-verify-YMUCfTKeje/cvc4 [2024-11-09 07:08:48,037 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef4b90d9-1fed-47f1-a962-68ab56c7533f/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-09 07:08:48,039 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef4b90d9-1fed-47f1-a962-68ab56c7533f/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt (29)] Waiting until timeout for monitored process [2024-11-09 07:08:51,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:08:51,515 INFO L255 TraceCheckSpWp]: Trace formula consists of 1676 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-09 07:08:51,519 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 07:08:51,863 INFO L134 CoverageAnalysis]: Checked inductivity of 463 backedges. 3 proven. 460 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 07:08:51,864 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 07:08:52,334 INFO L134 CoverageAnalysis]: Checked inductivity of 463 backedges. 3 proven. 460 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 07:08:52,334 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1374818229] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 07:08:52,334 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1010420680] [2024-11-09 07:08:52,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:08:52,335 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 07:08:52,335 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef4b90d9-1fed-47f1-a962-68ab56c7533f/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 07:08:52,336 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef4b90d9-1fed-47f1-a962-68ab56c7533f/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 07:08:52,337 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef4b90d9-1fed-47f1-a962-68ab56c7533f/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2024-11-09 07:08:53,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:08:53,552 INFO L255 TraceCheckSpWp]: Trace formula consists of 1676 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-09 07:08:53,555 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 07:08:53,903 INFO L134 CoverageAnalysis]: Checked inductivity of 463 backedges. 3 proven. 460 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 07:08:53,903 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 07:08:54,310 INFO L134 CoverageAnalysis]: Checked inductivity of 463 backedges. 3 proven. 460 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 07:08:54,310 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1010420680] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 07:08:54,310 INFO L185 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2024-11-09 07:08:54,310 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13, 13, 13, 13] total 24 [2024-11-09 07:08:54,311 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1729941692] [2024-11-09 07:08:54,311 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2024-11-09 07:08:54,312 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-11-09 07:08:54,312 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-09 07:08:54,312 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-11-09 07:08:54,313 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=166, Invalid=386, Unknown=0, NotChecked=0, Total=552 [2024-11-09 07:08:54,313 INFO L87 Difference]: Start difference. First operand 1523 states and 2790 transitions. Second operand has 24 states, 24 states have (on average 8.833333333333334) internal successors, (212), 24 states have internal predecessors, (212), 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) [2024-11-09 07:08:59,646 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 07:08:59,646 INFO L93 Difference]: Finished difference Result 3462 states and 6073 transitions. [2024-11-09 07:08:59,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-11-09 07:08:59,647 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 8.833333333333334) internal successors, (212), 24 states have internal predecessors, (212), 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 110 [2024-11-09 07:08:59,648 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 07:08:59,660 INFO L225 Difference]: With dead ends: 3462 [2024-11-09 07:08:59,660 INFO L226 Difference]: Without dead ends: 2045 [2024-11-09 07:08:59,664 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 664 GetRequests, 632 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=406, Invalid=716, Unknown=0, NotChecked=0, Total=1122 [2024-11-09 07:08:59,665 INFO L432 NwaCegarLoop]: 134 mSDtfsCounter, 375 mSDsluCounter, 1456 mSDsCounter, 0 mSdLazyCounter, 1254 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 375 SdHoareTripleChecker+Valid, 1590 SdHoareTripleChecker+Invalid, 1256 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1254 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.1s IncrementalHoareTripleChecker+Time [2024-11-09 07:08:59,666 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [375 Valid, 1590 Invalid, 1256 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 1254 Invalid, 0 Unknown, 0 Unchecked, 4.1s Time] [2024-11-09 07:08:59,669 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2045 states. [2024-11-09 07:08:59,703 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2045 to 2003. [2024-11-09 07:08:59,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2003 states, 1867 states have (on average 1.790037493304767) internal successors, (3342), 2002 states have internal predecessors, (3342), 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) [2024-11-09 07:08:59,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2003 states to 2003 states and 3342 transitions. [2024-11-09 07:08:59,720 INFO L78 Accepts]: Start accepts. Automaton has 2003 states and 3342 transitions. Word has length 110 [2024-11-09 07:08:59,721 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 07:08:59,721 INFO L471 AbstractCegarLoop]: Abstraction has 2003 states and 3342 transitions. [2024-11-09 07:08:59,721 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 8.833333333333334) internal successors, (212), 24 states have internal predecessors, (212), 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) [2024-11-09 07:08:59,722 INFO L276 IsEmpty]: Start isEmpty. Operand 2003 states and 3342 transitions. [2024-11-09 07:08:59,724 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 231 [2024-11-09 07:08:59,725 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 07:08:59,725 INFO L215 NwaCegarLoop]: trace histogram [22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 2, 2, 1, 1, 1, 1, 1, 1] [2024-11-09 07:08:59,745 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef4b90d9-1fed-47f1-a962-68ab56c7533f/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt (29)] Forceful destruction successful, exit code 0 [2024-11-09 07:08:59,952 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef4b90d9-1fed-47f1-a962-68ab56c7533f/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (28)] Forceful destruction successful, exit code 0 [2024-11-09 07:09:00,193 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef4b90d9-1fed-47f1-a962-68ab56c7533f/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Forceful destruction successful, exit code 0 [2024-11-09 07:09:00,326 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef4b90d9-1fed-47f1-a962-68ab56c7533f/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt,28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef4b90d9-1fed-47f1-a962-68ab56c7533f/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef4b90d9-1fed-47f1-a962-68ab56c7533f/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 07:09:00,326 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr20REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr21REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 61 more)] === [2024-11-09 07:09:00,326 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 07:09:00,327 INFO L85 PathProgramCache]: Analyzing trace with hash -1991017743, now seen corresponding path program 2 times [2024-11-09 07:09:00,329 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-09 07:09:00,329 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [948895877] [2024-11-09 07:09:00,330 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-09 07:09:00,330 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 [2024-11-09 07:09:00,330 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef4b90d9-1fed-47f1-a962-68ab56c7533f/bin/utaipan-verify-YMUCfTKeje/mathsat [2024-11-09 07:09:00,331 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef4b90d9-1fed-47f1-a962-68ab56c7533f/bin/utaipan-verify-YMUCfTKeje/mathsat -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) [2024-11-09 07:09:00,333 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef4b90d9-1fed-47f1-a962-68ab56c7533f/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (31)] Waiting until timeout for monitored process [2024-11-09 07:09:11,553 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-09 07:09:11,553 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 07:09:11,724 INFO L255 TraceCheckSpWp]: Trace formula consists of 3296 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-11-09 07:09:11,734 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 07:09:13,661 INFO L134 CoverageAnalysis]: Checked inductivity of 2335 backedges. 3 proven. 2332 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 07:09:13,662 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 07:09:16,728 INFO L134 CoverageAnalysis]: Checked inductivity of 2335 backedges. 3 proven. 2332 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 07:09:16,728 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-09 07:09:16,729 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [948895877] [2024-11-09 07:09:16,729 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [948895877] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 07:09:16,729 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1598212673] [2024-11-09 07:09:16,729 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-09 07:09:16,729 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-09 07:09:16,729 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef4b90d9-1fed-47f1-a962-68ab56c7533f/bin/utaipan-verify-YMUCfTKeje/cvc4 [2024-11-09 07:09:16,730 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef4b90d9-1fed-47f1-a962-68ab56c7533f/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-09 07:09:16,732 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef4b90d9-1fed-47f1-a962-68ab56c7533f/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt (32)] Waiting until timeout for monitored process [2024-11-09 07:09:26,514 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-09 07:09:26,514 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 07:09:26,670 INFO L255 TraceCheckSpWp]: Trace formula consists of 3296 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-11-09 07:09:26,679 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 07:09:27,471 INFO L134 CoverageAnalysis]: Checked inductivity of 2335 backedges. 3 proven. 2332 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 07:09:27,471 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 07:09:28,363 INFO L134 CoverageAnalysis]: Checked inductivity of 2335 backedges. 3 proven. 2332 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 07:09:28,364 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1598212673] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 07:09:28,364 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1858122407] [2024-11-09 07:09:28,364 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-09 07:09:28,364 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 07:09:28,364 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef4b90d9-1fed-47f1-a962-68ab56c7533f/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 07:09:28,365 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef4b90d9-1fed-47f1-a962-68ab56c7533f/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 07:09:28,366 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef4b90d9-1fed-47f1-a962-68ab56c7533f/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2024-11-09 07:09:30,358 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-09 07:09:30,358 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 07:09:30,476 INFO L255 TraceCheckSpWp]: Trace formula consists of 3296 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-11-09 07:09:30,481 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 07:09:31,242 INFO L134 CoverageAnalysis]: Checked inductivity of 2335 backedges. 3 proven. 2332 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 07:09:31,242 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 07:09:32,204 INFO L134 CoverageAnalysis]: Checked inductivity of 2335 backedges. 3 proven. 2332 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 07:09:32,204 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1858122407] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 07:09:32,204 INFO L185 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2024-11-09 07:09:32,204 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25, 25, 25, 25, 25] total 48 [2024-11-09 07:09:32,204 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [675327938] [2024-11-09 07:09:32,204 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2024-11-09 07:09:32,205 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2024-11-09 07:09:32,205 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-09 07:09:32,206 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2024-11-09 07:09:32,207 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=502, Invalid=1754, Unknown=0, NotChecked=0, Total=2256 [2024-11-09 07:09:32,207 INFO L87 Difference]: Start difference. First operand 2003 states and 3342 transitions. Second operand has 48 states, 48 states have (on average 9.416666666666666) internal successors, (452), 48 states have internal predecessors, (452), 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) [2024-11-09 07:09:45,728 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 07:09:45,729 INFO L93 Difference]: Finished difference Result 4158 states and 6857 transitions. [2024-11-09 07:09:45,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2024-11-09 07:09:45,729 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 48 states have (on average 9.416666666666666) internal successors, (452), 48 states have internal predecessors, (452), 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 230 [2024-11-09 07:09:45,730 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 07:09:45,739 INFO L225 Difference]: With dead ends: 4158 [2024-11-09 07:09:45,739 INFO L226 Difference]: Without dead ends: 2381 [2024-11-09 07:09:45,744 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 1380 GetRequests, 1328 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 240 ImplicationChecksByTransitivity, 4.2s TimeCoverageRelationStatistics Valid=694, Invalid=2168, Unknown=0, NotChecked=0, Total=2862 [2024-11-09 07:09:45,744 INFO L432 NwaCegarLoop]: 206 mSDtfsCounter, 654 mSDsluCounter, 4168 mSDsCounter, 0 mSdLazyCounter, 3668 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 654 SdHoareTripleChecker+Valid, 4374 SdHoareTripleChecker+Invalid, 3669 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3668 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.3s IncrementalHoareTripleChecker+Time [2024-11-09 07:09:45,745 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [654 Valid, 4374 Invalid, 3669 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3668 Invalid, 0 Unknown, 0 Unchecked, 12.3s Time] [2024-11-09 07:09:45,749 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2381 states. [2024-11-09 07:09:45,784 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2381 to 2323. [2024-11-09 07:09:45,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2323 states, 2187 states have (on average 1.696387745770462) internal successors, (3710), 2322 states have internal predecessors, (3710), 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) [2024-11-09 07:09:45,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2323 states to 2323 states and 3710 transitions. [2024-11-09 07:09:45,803 INFO L78 Accepts]: Start accepts. Automaton has 2323 states and 3710 transitions. Word has length 230 [2024-11-09 07:09:45,804 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 07:09:45,805 INFO L471 AbstractCegarLoop]: Abstraction has 2323 states and 3710 transitions. [2024-11-09 07:09:45,805 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 48 states have (on average 9.416666666666666) internal successors, (452), 48 states have internal predecessors, (452), 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) [2024-11-09 07:09:45,805 INFO L276 IsEmpty]: Start isEmpty. Operand 2323 states and 3710 transitions. [2024-11-09 07:09:45,809 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 311 [2024-11-09 07:09:45,809 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 07:09:45,810 INFO L215 NwaCegarLoop]: trace histogram [30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 2, 2, 1, 1, 1, 1, 1, 1] [2024-11-09 07:09:45,893 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef4b90d9-1fed-47f1-a962-68ab56c7533f/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Forceful destruction successful, exit code 0 [2024-11-09 07:09:46,041 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef4b90d9-1fed-47f1-a962-68ab56c7533f/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt (32)] Ended with exit code 0 [2024-11-09 07:09:46,252 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef4b90d9-1fed-47f1-a962-68ab56c7533f/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (31)] Ended with exit code 0 [2024-11-09 07:09:46,410 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef4b90d9-1fed-47f1-a962-68ab56c7533f/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true,32 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef4b90d9-1fed-47f1-a962-68ab56c7533f/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt,31 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef4b90d9-1fed-47f1-a962-68ab56c7533f/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-09 07:09:46,411 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr20REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr21REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 61 more)] === [2024-11-09 07:09:46,411 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 07:09:46,411 INFO L85 PathProgramCache]: Analyzing trace with hash 1125669857, now seen corresponding path program 3 times [2024-11-09 07:09:46,413 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-09 07:09:46,414 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [189952722] [2024-11-09 07:09:46,414 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-09 07:09:46,414 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 [2024-11-09 07:09:46,414 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef4b90d9-1fed-47f1-a962-68ab56c7533f/bin/utaipan-verify-YMUCfTKeje/mathsat [2024-11-09 07:09:46,417 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef4b90d9-1fed-47f1-a962-68ab56c7533f/bin/utaipan-verify-YMUCfTKeje/mathsat -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) [2024-11-09 07:09:46,419 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef4b90d9-1fed-47f1-a962-68ab56c7533f/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (34)] Waiting until timeout for monitored process