./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test1-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version cf1a7837 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d78ed5a-302d-4314-99aa-1f1643b70a9c/bin/utaipan-verify-NcY6lQBIFX/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d78ed5a-302d-4314-99aa-1f1643b70a9c/bin/utaipan-verify-NcY6lQBIFX/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d78ed5a-302d-4314-99aa-1f1643b70a9c/bin/utaipan-verify-NcY6lQBIFX/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d78ed5a-302d-4314-99aa-1f1643b70a9c/bin/utaipan-verify-NcY6lQBIFX/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test1-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d78ed5a-302d-4314-99aa-1f1643b70a9c/bin/utaipan-verify-NcY6lQBIFX/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d78ed5a-302d-4314-99aa-1f1643b70a9c/bin/utaipan-verify-NcY6lQBIFX --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 8a34048511216dfe9a14f70dd929fd2de5a6eaf4560cb9e9e466dd0467a1d6d7 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-cf1a783 [2023-11-12 00:12:46,467 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-12 00:12:46,586 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d78ed5a-302d-4314-99aa-1f1643b70a9c/bin/utaipan-verify-NcY6lQBIFX/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2023-11-12 00:12:46,598 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-12 00:12:46,599 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-12 00:12:46,639 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-12 00:12:46,640 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-12 00:12:46,640 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-12 00:12:46,641 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-12 00:12:46,646 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-12 00:12:46,647 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-12 00:12:46,648 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-12 00:12:46,648 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-12 00:12:46,650 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-12 00:12:46,650 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-12 00:12:46,651 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-12 00:12:46,653 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-12 00:12:46,654 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-12 00:12:46,654 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-12 00:12:46,655 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-12 00:12:46,655 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-12 00:12:46,656 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-12 00:12:46,657 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-12 00:12:46,657 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-12 00:12:46,658 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-12 00:12:46,659 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-12 00:12:46,659 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-12 00:12:46,660 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-12 00:12:46,660 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-12 00:12:46,661 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-12 00:12:46,662 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-12 00:12:46,663 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-12 00:12:46,663 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-12 00:12:46,663 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-12 00:12:46,663 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-12 00:12:46,664 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-12 00:12:46,664 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-12 00:12:46,664 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-12 00:12:46,665 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-12 00:12:46,665 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 00:12:46,665 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-12 00:12:46,666 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-12 00:12:46,666 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-12 00:12:46,666 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-12 00:12:46,667 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-12 00:12:46,667 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-12 00:12:46,667 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_7d78ed5a-302d-4314-99aa-1f1643b70a9c/bin/utaipan-verify-NcY6lQBIFX/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d78ed5a-302d-4314-99aa-1f1643b70a9c/bin/utaipan-verify-NcY6lQBIFX Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8a34048511216dfe9a14f70dd929fd2de5a6eaf4560cb9e9e466dd0467a1d6d7 [2023-11-12 00:12:46,946 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-12 00:12:46,967 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-12 00:12:46,970 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-12 00:12:46,971 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-12 00:12:46,972 INFO L274 PluginConnector]: CDTParser initialized [2023-11-12 00:12:46,973 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d78ed5a-302d-4314-99aa-1f1643b70a9c/bin/utaipan-verify-NcY6lQBIFX/../../sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test1-1.i [2023-11-12 00:12:50,094 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-12 00:12:50,539 INFO L384 CDTParser]: Found 1 translation units. [2023-11-12 00:12:50,544 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d78ed5a-302d-4314-99aa-1f1643b70a9c/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test1-1.i [2023-11-12 00:12:50,574 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d78ed5a-302d-4314-99aa-1f1643b70a9c/bin/utaipan-verify-NcY6lQBIFX/data/1bddd25d6/985e3d691e4649c6bbc12a1943822323/FLAGb7b5d3302 [2023-11-12 00:12:50,594 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d78ed5a-302d-4314-99aa-1f1643b70a9c/bin/utaipan-verify-NcY6lQBIFX/data/1bddd25d6/985e3d691e4649c6bbc12a1943822323 [2023-11-12 00:12:50,599 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-12 00:12:50,601 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-12 00:12:50,606 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-12 00:12:50,606 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-12 00:12:50,612 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-12 00:12:50,613 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 12:12:50" (1/1) ... [2023-11-12 00:12:50,614 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@43c06b10 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:12:50, skipping insertion in model container [2023-11-12 00:12:50,614 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 12:12:50" (1/1) ... [2023-11-12 00:12:50,701 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-12 00:12:51,274 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 00:12:51,286 ERROR L324 MainTranslator]: Unsupported Syntax: Found a cast between two array/pointer types of different sizes while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) [2023-11-12 00:12:51,286 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@146aae2a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:12:51, skipping insertion in model container [2023-11-12 00:12:51,287 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-12 00:12:51,287 INFO L186 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2023-11-12 00:12:51,289 INFO L158 Benchmark]: Toolchain (without parser) took 686.97ms. Allocated memory is still 155.2MB. Free memory was 123.3MB in the beginning and 106.5MB in the end (delta: 16.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2023-11-12 00:12:51,289 INFO L158 Benchmark]: CDTParser took 0.34ms. Allocated memory is still 117.4MB. Free memory is still 76.2MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-12 00:12:51,290 INFO L158 Benchmark]: CACSL2BoogieTranslator took 681.40ms. Allocated memory is still 155.2MB. Free memory was 123.3MB in the beginning and 106.5MB in the end (delta: 16.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2023-11-12 00:12:51,292 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.34ms. Allocated memory is still 117.4MB. Free memory is still 76.2MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 681.40ms. Allocated memory is still 155.2MB. Free memory was 123.3MB in the beginning and 106.5MB in the end (delta: 16.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 751]: Unsupported Syntax Found a cast between two array/pointer types of different sizes while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d78ed5a-302d-4314-99aa-1f1643b70a9c/bin/utaipan-verify-NcY6lQBIFX/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d78ed5a-302d-4314-99aa-1f1643b70a9c/bin/utaipan-verify-NcY6lQBIFX/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d78ed5a-302d-4314-99aa-1f1643b70a9c/bin/utaipan-verify-NcY6lQBIFX/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d78ed5a-302d-4314-99aa-1f1643b70a9c/bin/utaipan-verify-NcY6lQBIFX/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test1-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d78ed5a-302d-4314-99aa-1f1643b70a9c/bin/utaipan-verify-NcY6lQBIFX/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d78ed5a-302d-4314-99aa-1f1643b70a9c/bin/utaipan-verify-NcY6lQBIFX --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 8a34048511216dfe9a14f70dd929fd2de5a6eaf4560cb9e9e466dd0467a1d6d7 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-cf1a783 [2023-11-12 00:12:53,691 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-12 00:12:53,797 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d78ed5a-302d-4314-99aa-1f1643b70a9c/bin/utaipan-verify-NcY6lQBIFX/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf [2023-11-12 00:12:53,804 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-12 00:12:53,804 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-12 00:12:53,858 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-12 00:12:53,859 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-12 00:12:53,860 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-12 00:12:53,861 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-12 00:12:53,866 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-12 00:12:53,867 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-12 00:12:53,868 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-12 00:12:53,868 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-12 00:12:53,870 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-12 00:12:53,871 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-12 00:12:53,871 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-12 00:12:53,872 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-12 00:12:53,872 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-12 00:12:53,873 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-12 00:12:53,874 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-12 00:12:53,874 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-12 00:12:53,875 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-12 00:12:53,875 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-12 00:12:53,876 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-12 00:12:53,876 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-12 00:12:53,877 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-12 00:12:53,877 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-12 00:12:53,877 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-12 00:12:53,878 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-11-12 00:12:53,878 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-11-12 00:12:53,880 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-12 00:12:53,880 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-12 00:12:53,881 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-12 00:12:53,881 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-12 00:12:53,881 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-12 00:12:53,881 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-12 00:12:53,883 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 00:12:53,883 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-12 00:12:53,884 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-12 00:12:53,884 INFO L153 SettingsManager]: * Trace refinement strategy=WALRUS [2023-11-12 00:12:53,885 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-11-12 00:12:53,885 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-12 00:12:53,885 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-12 00:12:53,885 INFO L153 SettingsManager]: * Logic for external solver=AUFBV WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d78ed5a-302d-4314-99aa-1f1643b70a9c/bin/utaipan-verify-NcY6lQBIFX/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d78ed5a-302d-4314-99aa-1f1643b70a9c/bin/utaipan-verify-NcY6lQBIFX Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8a34048511216dfe9a14f70dd929fd2de5a6eaf4560cb9e9e466dd0467a1d6d7 [2023-11-12 00:12:54,250 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-12 00:12:54,294 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-12 00:12:54,297 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-12 00:12:54,298 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-12 00:12:54,300 INFO L274 PluginConnector]: CDTParser initialized [2023-11-12 00:12:54,302 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d78ed5a-302d-4314-99aa-1f1643b70a9c/bin/utaipan-verify-NcY6lQBIFX/../../sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test1-1.i [2023-11-12 00:12:57,470 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-12 00:12:57,822 INFO L384 CDTParser]: Found 1 translation units. [2023-11-12 00:12:57,823 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d78ed5a-302d-4314-99aa-1f1643b70a9c/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test1-1.i [2023-11-12 00:12:57,851 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d78ed5a-302d-4314-99aa-1f1643b70a9c/bin/utaipan-verify-NcY6lQBIFX/data/571889d76/a7ee4b71d8c34eb597b444f7b40c30ad/FLAG8acacaeb0 [2023-11-12 00:12:57,865 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d78ed5a-302d-4314-99aa-1f1643b70a9c/bin/utaipan-verify-NcY6lQBIFX/data/571889d76/a7ee4b71d8c34eb597b444f7b40c30ad [2023-11-12 00:12:57,867 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-12 00:12:57,869 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-12 00:12:57,870 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-12 00:12:57,871 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-12 00:12:57,876 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-12 00:12:57,877 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 12:12:57" (1/1) ... [2023-11-12 00:12:57,878 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@547abbb4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:12:57, skipping insertion in model container [2023-11-12 00:12:57,878 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 12:12:57" (1/1) ... [2023-11-12 00:12:57,980 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-12 00:12:58,745 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 00:12:58,782 INFO L199 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2023-11-12 00:12:58,809 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-12 00:12:58,921 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 00:12:58,936 INFO L202 MainTranslator]: Completed pre-run [2023-11-12 00:12:59,032 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 00:12:59,091 INFO L206 MainTranslator]: Completed translation [2023-11-12 00:12:59,093 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:12:59 WrapperNode [2023-11-12 00:12:59,093 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-12 00:12:59,094 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-12 00:12:59,095 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-12 00:12:59,095 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-12 00:12:59,104 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:12:59" (1/1) ... [2023-11-12 00:12:59,150 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:12:59" (1/1) ... [2023-11-12 00:12:59,202 INFO L138 Inliner]: procedures = 180, calls = 187, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 634 [2023-11-12 00:12:59,212 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-12 00:12:59,213 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-12 00:12:59,214 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-12 00:12:59,215 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-12 00:12:59,224 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:12:59" (1/1) ... [2023-11-12 00:12:59,225 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:12:59" (1/1) ... [2023-11-12 00:12:59,235 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:12:59" (1/1) ... [2023-11-12 00:12:59,235 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:12:59" (1/1) ... [2023-11-12 00:12:59,272 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:12:59" (1/1) ... [2023-11-12 00:12:59,280 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:12:59" (1/1) ... [2023-11-12 00:12:59,285 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:12:59" (1/1) ... [2023-11-12 00:12:59,289 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:12:59" (1/1) ... [2023-11-12 00:12:59,297 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-12 00:12:59,313 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-12 00:12:59,313 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-12 00:12:59,313 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-12 00:12:59,314 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:12:59" (1/1) ... [2023-11-12 00:12:59,321 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 00:12:59,338 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d78ed5a-302d-4314-99aa-1f1643b70a9c/bin/utaipan-verify-NcY6lQBIFX/z3 [2023-11-12 00:12:59,350 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d78ed5a-302d-4314-99aa-1f1643b70a9c/bin/utaipan-verify-NcY6lQBIFX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-12 00:12:59,400 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d78ed5a-302d-4314-99aa-1f1643b70a9c/bin/utaipan-verify-NcY6lQBIFX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-12 00:12:59,422 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2023-11-12 00:12:59,422 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2023-11-12 00:12:59,422 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-11-12 00:12:59,423 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-11-12 00:12:59,423 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2023-11-12 00:12:59,423 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2023-11-12 00:12:59,423 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-12 00:12:59,423 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-12 00:12:59,424 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-12 00:12:59,425 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-12 00:12:59,426 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-12 00:12:59,426 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-12 00:12:59,426 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2023-11-12 00:12:59,426 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2023-11-12 00:12:59,427 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-12 00:12:59,427 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-12 00:12:59,671 INFO L236 CfgBuilder]: Building ICFG [2023-11-12 00:12:59,673 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-12 00:12:59,678 WARN L817 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2023-11-12 00:13:03,406 INFO L277 CfgBuilder]: Performing block encoding [2023-11-12 00:13:03,426 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-12 00:13:03,427 INFO L302 CfgBuilder]: Removed 31 assume(true) statements. [2023-11-12 00:13:03,431 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 12:13:03 BoogieIcfgContainer [2023-11-12 00:13:03,431 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-12 00:13:03,453 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-12 00:13:03,454 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-12 00:13:03,458 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-12 00:13:03,458 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 12:12:57" (1/3) ... [2023-11-12 00:13:03,459 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@377af1f2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 12:13:03, skipping insertion in model container [2023-11-12 00:13:03,460 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:12:59" (2/3) ... [2023-11-12 00:13:03,462 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@377af1f2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 12:13:03, skipping insertion in model container [2023-11-12 00:13:03,462 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 12:13:03" (3/3) ... [2023-11-12 00:13:03,464 INFO L112 eAbstractionObserver]: Analyzing ICFG uthash_JEN_test1-1.i [2023-11-12 00:13:03,484 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-12 00:13:03,485 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 330 error locations. [2023-11-12 00:13:03,566 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-12 00:13:03,573 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@6ad910ed, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-12 00:13:03,574 INFO L358 AbstractCegarLoop]: Starting to check reachability of 330 error locations. [2023-11-12 00:13:03,583 INFO L276 IsEmpty]: Start isEmpty. Operand has 673 states, 330 states have (on average 2.212121212121212) internal successors, (730), 667 states have internal predecessors, (730), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 4 states have call predecessors, (13), 13 states have call successors, (13) [2023-11-12 00:13:03,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2023-11-12 00:13:03,590 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:13:03,591 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2023-11-12 00:13:03,591 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 327 more)] === [2023-11-12 00:13:03,603 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:13:03,603 INFO L85 PathProgramCache]: Analyzing trace with hash 37287509, now seen corresponding path program 1 times [2023-11-12 00:13:03,617 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-12 00:13:03,618 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1050404800] [2023-11-12 00:13:03,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:13:03,619 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-12 00:13:03,619 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d78ed5a-302d-4314-99aa-1f1643b70a9c/bin/utaipan-verify-NcY6lQBIFX/mathsat [2023-11-12 00:13:03,628 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d78ed5a-302d-4314-99aa-1f1643b70a9c/bin/utaipan-verify-NcY6lQBIFX/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-12 00:13:03,651 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d78ed5a-302d-4314-99aa-1f1643b70a9c/bin/utaipan-verify-NcY6lQBIFX/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2023-11-12 00:13:03,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:13:03,772 INFO L262 TraceCheckSpWp]: Trace formula consists of 27 conjuncts, 1 conjunts are in the unsatisfiable core [2023-11-12 00:13:03,777 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 00:13:03,798 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 00:13:03,799 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-12 00:13:03,800 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-12 00:13:03,800 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1050404800] [2023-11-12 00:13:03,801 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1050404800] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:13:03,801 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 00:13:03,802 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-12 00:13:03,804 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1582947754] [2023-11-12 00:13:03,805 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:13:03,809 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-12 00:13:03,810 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-12 00:13:03,855 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-12 00:13:03,856 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-12 00:13:03,860 INFO L87 Difference]: Start difference. First operand has 673 states, 330 states have (on average 2.212121212121212) internal successors, (730), 667 states have internal predecessors, (730), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 4 states have call predecessors, (13), 13 states have call successors, (13) Second operand has 2 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:13:03,918 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:13:03,919 INFO L93 Difference]: Finished difference Result 663 states and 709 transitions. [2023-11-12 00:13:03,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-12 00:13:03,921 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 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 5 [2023-11-12 00:13:03,922 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:13:03,942 INFO L225 Difference]: With dead ends: 663 [2023-11-12 00:13:03,942 INFO L226 Difference]: Without dead ends: 661 [2023-11-12 00:13:03,944 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-12 00:13:03,948 INFO L413 NwaCegarLoop]: 709 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 709 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-12 00:13:03,950 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 709 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-12 00:13:03,971 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 661 states. [2023-11-12 00:13:04,023 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 661 to 661. [2023-11-12 00:13:04,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 661 states, 324 states have (on average 2.1018518518518516) internal successors, (681), 655 states have internal predecessors, (681), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 4 states have call predecessors, (13), 13 states have call successors, (13) [2023-11-12 00:13:04,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 661 states to 661 states and 707 transitions. [2023-11-12 00:13:04,035 INFO L78 Accepts]: Start accepts. Automaton has 661 states and 707 transitions. Word has length 5 [2023-11-12 00:13:04,035 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:13:04,035 INFO L495 AbstractCegarLoop]: Abstraction has 661 states and 707 transitions. [2023-11-12 00:13:04,036 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:13:04,036 INFO L276 IsEmpty]: Start isEmpty. Operand 661 states and 707 transitions. [2023-11-12 00:13:04,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2023-11-12 00:13:04,037 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:13:04,037 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2023-11-12 00:13:04,055 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d78ed5a-302d-4314-99aa-1f1643b70a9c/bin/utaipan-verify-NcY6lQBIFX/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2023-11-12 00:13:04,249 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d78ed5a-302d-4314-99aa-1f1643b70a9c/bin/utaipan-verify-NcY6lQBIFX/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-12 00:13:04,250 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 327 more)] === [2023-11-12 00:13:04,250 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:13:04,251 INFO L85 PathProgramCache]: Analyzing trace with hash 37287571, now seen corresponding path program 1 times [2023-11-12 00:13:04,251 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-12 00:13:04,251 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [230028108] [2023-11-12 00:13:04,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:13:04,252 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-12 00:13:04,252 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d78ed5a-302d-4314-99aa-1f1643b70a9c/bin/utaipan-verify-NcY6lQBIFX/mathsat [2023-11-12 00:13:04,253 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d78ed5a-302d-4314-99aa-1f1643b70a9c/bin/utaipan-verify-NcY6lQBIFX/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-12 00:13:04,272 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d78ed5a-302d-4314-99aa-1f1643b70a9c/bin/utaipan-verify-NcY6lQBIFX/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2023-11-12 00:13:04,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:13:04,384 INFO L262 TraceCheckSpWp]: Trace formula consists of 27 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-12 00:13:04,386 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 00:13:04,450 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2023-11-12 00:13:04,470 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 00:13:04,470 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-12 00:13:04,470 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-12 00:13:04,471 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [230028108] [2023-11-12 00:13:04,472 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [230028108] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:13:04,476 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 00:13:04,476 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-12 00:13:04,477 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [387373110] [2023-11-12 00:13:04,477 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:13:04,479 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 00:13:04,479 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-12 00:13:04,480 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 00:13:04,480 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 00:13:04,481 INFO L87 Difference]: Start difference. First operand 661 states and 707 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:13:06,227 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:13:06,227 INFO L93 Difference]: Finished difference Result 622 states and 669 transitions. [2023-11-12 00:13:06,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 00:13:06,228 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 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 5 [2023-11-12 00:13:06,228 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:13:06,241 INFO L225 Difference]: With dead ends: 622 [2023-11-12 00:13:06,241 INFO L226 Difference]: Without dead ends: 622 [2023-11-12 00:13:06,242 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 00:13:06,243 INFO L413 NwaCegarLoop]: 337 mSDtfsCounter, 598 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 352 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 611 SdHoareTripleChecker+Valid, 358 SdHoareTripleChecker+Invalid, 406 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 352 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2023-11-12 00:13:06,244 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [611 Valid, 358 Invalid, 406 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 352 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2023-11-12 00:13:06,246 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 622 states. [2023-11-12 00:13:06,279 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 622 to 612. [2023-11-12 00:13:06,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 612 states, 324 states have (on average 1.9506172839506173) internal successors, (632), 606 states have internal predecessors, (632), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 4 states have call predecessors, (13), 13 states have call successors, (13) [2023-11-12 00:13:06,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 612 states to 612 states and 658 transitions. [2023-11-12 00:13:06,293 INFO L78 Accepts]: Start accepts. Automaton has 612 states and 658 transitions. Word has length 5 [2023-11-12 00:13:06,293 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:13:06,296 INFO L495 AbstractCegarLoop]: Abstraction has 612 states and 658 transitions. [2023-11-12 00:13:06,297 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:13:06,297 INFO L276 IsEmpty]: Start isEmpty. Operand 612 states and 658 transitions. [2023-11-12 00:13:06,297 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2023-11-12 00:13:06,297 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:13:06,298 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2023-11-12 00:13:06,309 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d78ed5a-302d-4314-99aa-1f1643b70a9c/bin/utaipan-verify-NcY6lQBIFX/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2023-11-12 00:13:06,498 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d78ed5a-302d-4314-99aa-1f1643b70a9c/bin/utaipan-verify-NcY6lQBIFX/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-12 00:13:06,499 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 327 more)] === [2023-11-12 00:13:06,500 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:13:06,500 INFO L85 PathProgramCache]: Analyzing trace with hash 37287572, now seen corresponding path program 1 times [2023-11-12 00:13:06,500 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-12 00:13:06,501 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1731205441] [2023-11-12 00:13:06,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:13:06,506 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-12 00:13:06,506 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d78ed5a-302d-4314-99aa-1f1643b70a9c/bin/utaipan-verify-NcY6lQBIFX/mathsat [2023-11-12 00:13:06,510 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d78ed5a-302d-4314-99aa-1f1643b70a9c/bin/utaipan-verify-NcY6lQBIFX/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-12 00:13:06,511 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d78ed5a-302d-4314-99aa-1f1643b70a9c/bin/utaipan-verify-NcY6lQBIFX/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2023-11-12 00:13:06,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:13:06,636 INFO L262 TraceCheckSpWp]: Trace formula consists of 27 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-12 00:13:06,649 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 00:13:06,663 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-11-12 00:13:06,691 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 00:13:06,691 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-12 00:13:06,692 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-12 00:13:06,694 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1731205441] [2023-11-12 00:13:06,695 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1731205441] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:13:06,695 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 00:13:06,695 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-12 00:13:06,698 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [977680959] [2023-11-12 00:13:06,698 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:13:06,699 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 00:13:06,699 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-12 00:13:06,700 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 00:13:06,700 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 00:13:06,701 INFO L87 Difference]: Start difference. First operand 612 states and 658 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:13:08,518 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:13:08,518 INFO L93 Difference]: Finished difference Result 682 states and 732 transitions. [2023-11-12 00:13:08,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 00:13:08,519 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 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 5 [2023-11-12 00:13:08,520 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:13:08,523 INFO L225 Difference]: With dead ends: 682 [2023-11-12 00:13:08,524 INFO L226 Difference]: Without dead ends: 682 [2023-11-12 00:13:08,524 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 00:13:08,525 INFO L413 NwaCegarLoop]: 533 mSDtfsCounter, 258 mSDsluCounter, 224 mSDsCounter, 0 mSdLazyCounter, 364 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 258 SdHoareTripleChecker+Valid, 757 SdHoareTripleChecker+Invalid, 376 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 364 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2023-11-12 00:13:08,526 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [258 Valid, 757 Invalid, 376 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 364 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2023-11-12 00:13:08,528 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 682 states. [2023-11-12 00:13:08,542 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 682 to 634. [2023-11-12 00:13:08,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 634 states, 356 states have (on average 1.9325842696629214) internal successors, (688), 628 states have internal predecessors, (688), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 4 states have call predecessors, (13), 13 states have call successors, (13) [2023-11-12 00:13:08,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 634 states to 634 states and 714 transitions. [2023-11-12 00:13:08,548 INFO L78 Accepts]: Start accepts. Automaton has 634 states and 714 transitions. Word has length 5 [2023-11-12 00:13:08,548 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:13:08,548 INFO L495 AbstractCegarLoop]: Abstraction has 634 states and 714 transitions. [2023-11-12 00:13:08,548 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:13:08,549 INFO L276 IsEmpty]: Start isEmpty. Operand 634 states and 714 transitions. [2023-11-12 00:13:08,549 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2023-11-12 00:13:08,549 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:13:08,549 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2023-11-12 00:13:08,559 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d78ed5a-302d-4314-99aa-1f1643b70a9c/bin/utaipan-verify-NcY6lQBIFX/mathsat -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 [2023-11-12 00:13:08,752 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d78ed5a-302d-4314-99aa-1f1643b70a9c/bin/utaipan-verify-NcY6lQBIFX/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-12 00:13:08,753 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr322REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 327 more)] === [2023-11-12 00:13:08,753 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:13:08,753 INFO L85 PathProgramCache]: Analyzing trace with hash 1156737092, now seen corresponding path program 1 times [2023-11-12 00:13:08,754 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-12 00:13:08,754 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1754629157] [2023-11-12 00:13:08,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:13:08,754 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-12 00:13:08,755 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d78ed5a-302d-4314-99aa-1f1643b70a9c/bin/utaipan-verify-NcY6lQBIFX/mathsat [2023-11-12 00:13:08,756 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d78ed5a-302d-4314-99aa-1f1643b70a9c/bin/utaipan-verify-NcY6lQBIFX/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-12 00:13:08,762 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d78ed5a-302d-4314-99aa-1f1643b70a9c/bin/utaipan-verify-NcY6lQBIFX/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2023-11-12 00:13:08,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:13:08,849 INFO L262 TraceCheckSpWp]: Trace formula consists of 21 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-12 00:13:08,851 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 00:13:08,864 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 00:13:08,865 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-12 00:13:08,865 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-12 00:13:08,865 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1754629157] [2023-11-12 00:13:08,868 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1754629157] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:13:08,868 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 00:13:08,868 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-12 00:13:08,869 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [803201765] [2023-11-12 00:13:08,873 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:13:08,873 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 00:13:08,874 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-12 00:13:08,874 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 00:13:08,874 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 00:13:08,875 INFO L87 Difference]: Start difference. First operand 634 states and 714 transitions. Second operand has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:13:08,977 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:13:08,977 INFO L93 Difference]: Finished difference Result 1218 states and 1358 transitions. [2023-11-12 00:13:08,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 00:13:08,981 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2023-11-12 00:13:08,981 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:13:08,989 INFO L225 Difference]: With dead ends: 1218 [2023-11-12 00:13:08,989 INFO L226 Difference]: Without dead ends: 1218 [2023-11-12 00:13:08,989 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 00:13:08,990 INFO L413 NwaCegarLoop]: 865 mSDtfsCounter, 571 mSDsluCounter, 642 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 574 SdHoareTripleChecker+Valid, 1507 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-12 00:13:08,991 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [574 Valid, 1507 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-12 00:13:08,994 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1218 states. [2023-11-12 00:13:09,013 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1218 to 635. [2023-11-12 00:13:09,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 635 states, 357 states have (on average 1.9299719887955182) internal successors, (689), 629 states have internal predecessors, (689), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 4 states have call predecessors, (13), 13 states have call successors, (13) [2023-11-12 00:13:09,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 635 states to 635 states and 715 transitions. [2023-11-12 00:13:09,019 INFO L78 Accepts]: Start accepts. Automaton has 635 states and 715 transitions. Word has length 6 [2023-11-12 00:13:09,019 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:13:09,019 INFO L495 AbstractCegarLoop]: Abstraction has 635 states and 715 transitions. [2023-11-12 00:13:09,019 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:13:09,019 INFO L276 IsEmpty]: Start isEmpty. Operand 635 states and 715 transitions. [2023-11-12 00:13:09,020 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2023-11-12 00:13:09,020 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:13:09,020 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 00:13:09,033 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d78ed5a-302d-4314-99aa-1f1643b70a9c/bin/utaipan-verify-NcY6lQBIFX/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2023-11-12 00:13:09,228 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d78ed5a-302d-4314-99aa-1f1643b70a9c/bin/utaipan-verify-NcY6lQBIFX/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-12 00:13:09,228 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 327 more)] === [2023-11-12 00:13:09,228 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:13:09,228 INFO L85 PathProgramCache]: Analyzing trace with hash 334651453, now seen corresponding path program 1 times [2023-11-12 00:13:09,229 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-12 00:13:09,229 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [784593895] [2023-11-12 00:13:09,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:13:09,229 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-12 00:13:09,229 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d78ed5a-302d-4314-99aa-1f1643b70a9c/bin/utaipan-verify-NcY6lQBIFX/mathsat [2023-11-12 00:13:09,230 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d78ed5a-302d-4314-99aa-1f1643b70a9c/bin/utaipan-verify-NcY6lQBIFX/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-12 00:13:09,232 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d78ed5a-302d-4314-99aa-1f1643b70a9c/bin/utaipan-verify-NcY6lQBIFX/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2023-11-12 00:13:09,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:13:09,355 INFO L262 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-12 00:13:09,357 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 00:13:09,369 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 00:13:09,369 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-12 00:13:09,369 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-12 00:13:09,369 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [784593895] [2023-11-12 00:13:09,370 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [784593895] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:13:09,370 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 00:13:09,370 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-12 00:13:09,370 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1124465593] [2023-11-12 00:13:09,370 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:13:09,371 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 00:13:09,371 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-12 00:13:09,371 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 00:13:09,372 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 00:13:09,372 INFO L87 Difference]: Start difference. First operand 635 states and 715 transitions. Second operand has 3 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) [2023-11-12 00:13:09,409 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:13:09,410 INFO L93 Difference]: Finished difference Result 593 states and 672 transitions. [2023-11-12 00:13:09,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 00:13:09,411 INFO L78 Accepts]: Start accepts. Automaton has has 3 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 [2023-11-12 00:13:09,411 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:13:09,415 INFO L225 Difference]: With dead ends: 593 [2023-11-12 00:13:09,415 INFO L226 Difference]: Without dead ends: 593 [2023-11-12 00:13:09,415 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 00:13:09,416 INFO L413 NwaCegarLoop]: 593 mSDtfsCounter, 81 mSDsluCounter, 521 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 81 SdHoareTripleChecker+Valid, 1114 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-12 00:13:09,417 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [81 Valid, 1114 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-12 00:13:09,419 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 593 states. [2023-11-12 00:13:09,431 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 593 to 593. [2023-11-12 00:13:09,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 593 states, 339 states have (on average 1.9056047197640118) internal successors, (646), 587 states have internal predecessors, (646), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 4 states have call predecessors, (13), 13 states have call successors, (13) [2023-11-12 00:13:09,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 593 states to 593 states and 672 transitions. [2023-11-12 00:13:09,436 INFO L78 Accepts]: Start accepts. Automaton has 593 states and 672 transitions. Word has length 11 [2023-11-12 00:13:09,437 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:13:09,437 INFO L495 AbstractCegarLoop]: Abstraction has 593 states and 672 transitions. [2023-11-12 00:13:09,437 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 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) [2023-11-12 00:13:09,437 INFO L276 IsEmpty]: Start isEmpty. Operand 593 states and 672 transitions. [2023-11-12 00:13:09,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2023-11-12 00:13:09,438 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:13:09,438 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 00:13:09,455 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d78ed5a-302d-4314-99aa-1f1643b70a9c/bin/utaipan-verify-NcY6lQBIFX/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2023-11-12 00:13:09,650 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d78ed5a-302d-4314-99aa-1f1643b70a9c/bin/utaipan-verify-NcY6lQBIFX/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-12 00:13:09,650 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr28REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 327 more)] === [2023-11-12 00:13:09,650 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:13:09,650 INFO L85 PathProgramCache]: Analyzing trace with hash -522505033, now seen corresponding path program 1 times [2023-11-12 00:13:09,651 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-12 00:13:09,651 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [986277908] [2023-11-12 00:13:09,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:13:09,651 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-12 00:13:09,651 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d78ed5a-302d-4314-99aa-1f1643b70a9c/bin/utaipan-verify-NcY6lQBIFX/mathsat [2023-11-12 00:13:09,652 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d78ed5a-302d-4314-99aa-1f1643b70a9c/bin/utaipan-verify-NcY6lQBIFX/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-12 00:13:09,654 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d78ed5a-302d-4314-99aa-1f1643b70a9c/bin/utaipan-verify-NcY6lQBIFX/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2023-11-12 00:13:09,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:13:09,790 INFO L262 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-12 00:13:09,791 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 00:13:09,813 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 00:13:09,813 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-12 00:13:09,813 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-12 00:13:09,813 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [986277908] [2023-11-12 00:13:09,813 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [986277908] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:13:09,813 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 00:13:09,813 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-12 00:13:09,813 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [587864932] [2023-11-12 00:13:09,814 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:13:09,814 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-12 00:13:09,814 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-12 00:13:09,814 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-12 00:13:09,814 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-12 00:13:09,815 INFO L87 Difference]: Start difference. First operand 593 states and 672 transitions. Second operand has 4 states, 4 states have (on average 3.25) 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) [2023-11-12 00:13:09,917 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:13:09,918 INFO L93 Difference]: Finished difference Result 572 states and 644 transitions. [2023-11-12 00:13:09,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-12 00:13:09,919 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.25) 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 [2023-11-12 00:13:09,919 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:13:09,923 INFO L225 Difference]: With dead ends: 572 [2023-11-12 00:13:09,923 INFO L226 Difference]: Without dead ends: 572 [2023-11-12 00:13:09,924 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-12 00:13:09,925 INFO L413 NwaCegarLoop]: 548 mSDtfsCounter, 62 mSDsluCounter, 1062 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 1610 SdHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-12 00:13:09,925 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [62 Valid, 1610 Invalid, 57 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-12 00:13:09,927 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 572 states. [2023-11-12 00:13:09,949 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 572 to 571. [2023-11-12 00:13:09,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 571 states, 331 states have (on average 1.86404833836858) internal successors, (617), 565 states have internal predecessors, (617), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 4 states have call predecessors, (13), 13 states have call successors, (13) [2023-11-12 00:13:09,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 571 states to 571 states and 643 transitions. [2023-11-12 00:13:09,956 INFO L78 Accepts]: Start accepts. Automaton has 571 states and 643 transitions. Word has length 13 [2023-11-12 00:13:09,958 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:13:09,958 INFO L495 AbstractCegarLoop]: Abstraction has 571 states and 643 transitions. [2023-11-12 00:13:09,958 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.25) 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) [2023-11-12 00:13:09,959 INFO L276 IsEmpty]: Start isEmpty. Operand 571 states and 643 transitions. [2023-11-12 00:13:09,960 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2023-11-12 00:13:09,960 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:13:09,960 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 00:13:09,977 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d78ed5a-302d-4314-99aa-1f1643b70a9c/bin/utaipan-verify-NcY6lQBIFX/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2023-11-12 00:13:10,172 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d78ed5a-302d-4314-99aa-1f1643b70a9c/bin/utaipan-verify-NcY6lQBIFX/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-12 00:13:10,173 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr42REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 327 more)] === [2023-11-12 00:13:10,175 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:13:10,175 INFO L85 PathProgramCache]: Analyzing trace with hash -22216187, now seen corresponding path program 1 times [2023-11-12 00:13:10,176 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-12 00:13:10,176 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [176165905] [2023-11-12 00:13:10,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:13:10,177 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-12 00:13:10,177 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d78ed5a-302d-4314-99aa-1f1643b70a9c/bin/utaipan-verify-NcY6lQBIFX/mathsat [2023-11-12 00:13:10,178 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d78ed5a-302d-4314-99aa-1f1643b70a9c/bin/utaipan-verify-NcY6lQBIFX/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-12 00:13:10,216 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d78ed5a-302d-4314-99aa-1f1643b70a9c/bin/utaipan-verify-NcY6lQBIFX/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2023-11-12 00:13:10,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:13:10,329 INFO L262 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-12 00:13:10,332 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 00:13:10,338 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2023-11-12 00:13:10,443 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 00:13:10,443 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-12 00:13:10,443 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-12 00:13:10,444 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [176165905] [2023-11-12 00:13:10,444 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [176165905] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:13:10,444 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 00:13:10,444 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-12 00:13:10,444 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [622011622] [2023-11-12 00:13:10,444 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:13:10,445 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-12 00:13:10,445 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-12 00:13:10,445 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-12 00:13:10,445 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-12 00:13:10,445 INFO L87 Difference]: Start difference. First operand 571 states and 643 transitions. Second operand has 4 states, 3 states have (on average 9.0) internal successors, (27), 4 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:13:12,309 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:13:12,310 INFO L93 Difference]: Finished difference Result 577 states and 650 transitions. [2023-11-12 00:13:12,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-12 00:13:12,310 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 9.0) internal successors, (27), 4 states have internal predecessors, (27), 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 27 [2023-11-12 00:13:12,311 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:13:12,314 INFO L225 Difference]: With dead ends: 577 [2023-11-12 00:13:12,314 INFO L226 Difference]: Without dead ends: 577 [2023-11-12 00:13:12,315 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-12 00:13:12,316 INFO L413 NwaCegarLoop]: 291 mSDtfsCounter, 527 mSDsluCounter, 242 mSDsCounter, 0 mSdLazyCounter, 606 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 540 SdHoareTripleChecker+Valid, 533 SdHoareTripleChecker+Invalid, 615 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 606 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2023-11-12 00:13:12,316 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [540 Valid, 533 Invalid, 615 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 606 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2023-11-12 00:13:12,319 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 577 states. [2023-11-12 00:13:12,350 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 577 to 567. [2023-11-12 00:13:12,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 567 states, 331 states have (on average 1.851963746223565) internal successors, (613), 561 states have internal predecessors, (613), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 4 states have call predecessors, (13), 13 states have call successors, (13) [2023-11-12 00:13:12,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 567 states to 567 states and 639 transitions. [2023-11-12 00:13:12,356 INFO L78 Accepts]: Start accepts. Automaton has 567 states and 639 transitions. Word has length 27 [2023-11-12 00:13:12,356 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:13:12,357 INFO L495 AbstractCegarLoop]: Abstraction has 567 states and 639 transitions. [2023-11-12 00:13:12,357 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 9.0) internal successors, (27), 4 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:13:12,357 INFO L276 IsEmpty]: Start isEmpty. Operand 567 states and 639 transitions. [2023-11-12 00:13:12,358 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2023-11-12 00:13:12,359 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:13:12,359 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 00:13:12,380 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d78ed5a-302d-4314-99aa-1f1643b70a9c/bin/utaipan-verify-NcY6lQBIFX/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2023-11-12 00:13:12,571 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d78ed5a-302d-4314-99aa-1f1643b70a9c/bin/utaipan-verify-NcY6lQBIFX/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-12 00:13:12,571 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr43REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 327 more)] === [2023-11-12 00:13:12,572 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:13:12,572 INFO L85 PathProgramCache]: Analyzing trace with hash -22216186, now seen corresponding path program 1 times [2023-11-12 00:13:12,572 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-12 00:13:12,572 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2102026592] [2023-11-12 00:13:12,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:13:12,573 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 [2023-11-12 00:13:12,573 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d78ed5a-302d-4314-99aa-1f1643b70a9c/bin/utaipan-verify-NcY6lQBIFX/mathsat [2023-11-12 00:13:12,574 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d78ed5a-302d-4314-99aa-1f1643b70a9c/bin/utaipan-verify-NcY6lQBIFX/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-12 00:13:12,577 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d78ed5a-302d-4314-99aa-1f1643b70a9c/bin/utaipan-verify-NcY6lQBIFX/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2023-11-12 00:13:12,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:13:12,726 INFO L262 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-12 00:13:12,728 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 00:13:12,736 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-11-12 00:13:12,971 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 00:13:12,972 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-12 00:13:12,972 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-12 00:13:12,972 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2102026592] [2023-11-12 00:13:12,972 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2102026592] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:13:12,972 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 00:13:12,972 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-12 00:13:12,973 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1850884612] [2023-11-12 00:13:12,973 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:13:12,973 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-12 00:13:12,973 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-12 00:13:12,974 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-12 00:13:12,974 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-12 00:13:12,974 INFO L87 Difference]: Start difference. First operand 567 states and 639 transitions. Second operand has 4 states, 3 states have (on average 9.0) internal successors, (27), 4 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:13:15,282 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:13:15,283 INFO L93 Difference]: Finished difference Result 611 states and 653 transitions. [2023-11-12 00:13:15,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-12 00:13:15,284 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 9.0) internal successors, (27), 4 states have internal predecessors, (27), 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 27 [2023-11-12 00:13:15,284 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:13:15,288 INFO L225 Difference]: With dead ends: 611 [2023-11-12 00:13:15,288 INFO L226 Difference]: Without dead ends: 611 [2023-11-12 00:13:15,288 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-12 00:13:15,289 INFO L413 NwaCegarLoop]: 487 mSDtfsCounter, 189 mSDsluCounter, 476 mSDsCounter, 0 mSdLazyCounter, 593 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 189 SdHoareTripleChecker+Valid, 963 SdHoareTripleChecker+Invalid, 596 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 593 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2023-11-12 00:13:15,289 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [189 Valid, 963 Invalid, 596 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 593 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2023-11-12 00:13:15,291 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 611 states. [2023-11-12 00:13:15,302 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 611 to 563. [2023-11-12 00:13:15,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 563 states, 331 states have (on average 1.8398791540785497) internal successors, (609), 557 states have internal predecessors, (609), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 4 states have call predecessors, (13), 13 states have call successors, (13) [2023-11-12 00:13:15,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 563 states to 563 states and 635 transitions. [2023-11-12 00:13:15,306 INFO L78 Accepts]: Start accepts. Automaton has 563 states and 635 transitions. Word has length 27 [2023-11-12 00:13:15,307 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:13:15,307 INFO L495 AbstractCegarLoop]: Abstraction has 563 states and 635 transitions. [2023-11-12 00:13:15,307 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 9.0) internal successors, (27), 4 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:13:15,307 INFO L276 IsEmpty]: Start isEmpty. Operand 563 states and 635 transitions. [2023-11-12 00:13:15,308 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2023-11-12 00:13:15,309 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:13:15,309 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 00:13:15,332 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d78ed5a-302d-4314-99aa-1f1643b70a9c/bin/utaipan-verify-NcY6lQBIFX/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2023-11-12 00:13:15,532 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d78ed5a-302d-4314-99aa-1f1643b70a9c/bin/utaipan-verify-NcY6lQBIFX/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-12 00:13:15,533 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr107REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 327 more)] === [2023-11-12 00:13:15,533 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:13:15,533 INFO L85 PathProgramCache]: Analyzing trace with hash -125948801, now seen corresponding path program 1 times [2023-11-12 00:13:15,534 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-12 00:13:15,534 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [597525946] [2023-11-12 00:13:15,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:13:15,534 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-12 00:13:15,534 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d78ed5a-302d-4314-99aa-1f1643b70a9c/bin/utaipan-verify-NcY6lQBIFX/mathsat [2023-11-12 00:13:15,535 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d78ed5a-302d-4314-99aa-1f1643b70a9c/bin/utaipan-verify-NcY6lQBIFX/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-12 00:13:15,536 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d78ed5a-302d-4314-99aa-1f1643b70a9c/bin/utaipan-verify-NcY6lQBIFX/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2023-11-12 00:13:15,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:13:15,743 INFO L262 TraceCheckSpWp]: Trace formula consists of 169 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-12 00:13:15,750 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 00:13:15,814 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 00:13:15,814 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-12 00:13:15,814 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-12 00:13:15,814 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [597525946] [2023-11-12 00:13:15,815 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [597525946] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:13:15,815 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 00:13:15,815 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-12 00:13:15,815 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1968297659] [2023-11-12 00:13:15,815 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:13:15,816 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-12 00:13:15,816 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-12 00:13:15,816 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-12 00:13:15,817 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-12 00:13:15,817 INFO L87 Difference]: Start difference. First operand 563 states and 635 transitions. Second operand has 4 states, 4 states have (on average 10.75) internal successors, (43), 4 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:13:15,890 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:13:15,890 INFO L93 Difference]: Finished difference Result 557 states and 625 transitions. [2023-11-12 00:13:15,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-12 00:13:15,891 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.75) internal successors, (43), 4 states have internal predecessors, (43), 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 43 [2023-11-12 00:13:15,891 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:13:15,894 INFO L225 Difference]: With dead ends: 557 [2023-11-12 00:13:15,895 INFO L226 Difference]: Without dead ends: 557 [2023-11-12 00:13:15,895 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-12 00:13:15,896 INFO L413 NwaCegarLoop]: 542 mSDtfsCounter, 31 mSDsluCounter, 1046 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 1588 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-12 00:13:15,896 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 1588 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-12 00:13:15,898 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 557 states. [2023-11-12 00:13:15,908 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 557 to 557. [2023-11-12 00:13:15,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 557 states, 325 states have (on average 1.843076923076923) internal successors, (599), 551 states have internal predecessors, (599), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 4 states have call predecessors, (13), 13 states have call successors, (13) [2023-11-12 00:13:15,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 557 states to 557 states and 625 transitions. [2023-11-12 00:13:15,912 INFO L78 Accepts]: Start accepts. Automaton has 557 states and 625 transitions. Word has length 43 [2023-11-12 00:13:15,913 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:13:15,913 INFO L495 AbstractCegarLoop]: Abstraction has 557 states and 625 transitions. [2023-11-12 00:13:15,913 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.75) internal successors, (43), 4 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:13:15,913 INFO L276 IsEmpty]: Start isEmpty. Operand 557 states and 625 transitions. [2023-11-12 00:13:15,915 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2023-11-12 00:13:15,915 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:13:15,915 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 00:13:15,934 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d78ed5a-302d-4314-99aa-1f1643b70a9c/bin/utaipan-verify-NcY6lQBIFX/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2023-11-12 00:13:16,128 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d78ed5a-302d-4314-99aa-1f1643b70a9c/bin/utaipan-verify-NcY6lQBIFX/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-12 00:13:16,129 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr107REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 327 more)] === [2023-11-12 00:13:16,129 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:13:16,129 INFO L85 PathProgramCache]: Analyzing trace with hash 796373579, now seen corresponding path program 1 times [2023-11-12 00:13:16,130 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-12 00:13:16,130 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [539962179] [2023-11-12 00:13:16,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:13:16,130 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-12 00:13:16,130 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d78ed5a-302d-4314-99aa-1f1643b70a9c/bin/utaipan-verify-NcY6lQBIFX/mathsat [2023-11-12 00:13:16,136 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d78ed5a-302d-4314-99aa-1f1643b70a9c/bin/utaipan-verify-NcY6lQBIFX/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-12 00:13:16,180 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d78ed5a-302d-4314-99aa-1f1643b70a9c/bin/utaipan-verify-NcY6lQBIFX/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2023-11-12 00:13:16,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:13:16,380 INFO L262 TraceCheckSpWp]: Trace formula consists of 193 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-12 00:13:16,383 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 00:13:16,730 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 00:13:16,730 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-12 00:13:16,730 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-12 00:13:16,730 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [539962179] [2023-11-12 00:13:16,730 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [539962179] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:13:16,731 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 00:13:16,731 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-12 00:13:16,731 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2027559110] [2023-11-12 00:13:16,731 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:13:16,732 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 00:13:16,732 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-12 00:13:16,732 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 00:13:16,733 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 00:13:16,733 INFO L87 Difference]: Start difference. First operand 557 states and 625 transitions. Second operand has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:13:16,835 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:13:16,835 INFO L93 Difference]: Finished difference Result 604 states and 672 transitions. [2023-11-12 00:13:16,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 00:13:16,836 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 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 51 [2023-11-12 00:13:16,837 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:13:16,840 INFO L225 Difference]: With dead ends: 604 [2023-11-12 00:13:16,840 INFO L226 Difference]: Without dead ends: 604 [2023-11-12 00:13:16,841 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 00:13:16,842 INFO L413 NwaCegarLoop]: 557 mSDtfsCounter, 67 mSDsluCounter, 461 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 1018 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-12 00:13:16,842 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [69 Valid, 1018 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-12 00:13:16,844 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 604 states. [2023-11-12 00:13:16,855 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 604 to 604. [2023-11-12 00:13:16,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 604 states, 372 states have (on average 1.7365591397849462) internal successors, (646), 598 states have internal predecessors, (646), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 4 states have call predecessors, (13), 13 states have call successors, (13) [2023-11-12 00:13:16,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 604 states to 604 states and 672 transitions. [2023-11-12 00:13:16,860 INFO L78 Accepts]: Start accepts. Automaton has 604 states and 672 transitions. Word has length 51 [2023-11-12 00:13:16,860 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:13:16,860 INFO L495 AbstractCegarLoop]: Abstraction has 604 states and 672 transitions. [2023-11-12 00:13:16,861 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:13:16,861 INFO L276 IsEmpty]: Start isEmpty. Operand 604 states and 672 transitions. [2023-11-12 00:13:16,862 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2023-11-12 00:13:16,862 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:13:16,863 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 00:13:16,877 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d78ed5a-302d-4314-99aa-1f1643b70a9c/bin/utaipan-verify-NcY6lQBIFX/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2023-11-12 00:13:17,076 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d78ed5a-302d-4314-99aa-1f1643b70a9c/bin/utaipan-verify-NcY6lQBIFX/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-12 00:13:17,076 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr61REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 327 more)] === [2023-11-12 00:13:17,076 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:13:17,077 INFO L85 PathProgramCache]: Analyzing trace with hash -741532885, now seen corresponding path program 1 times [2023-11-12 00:13:17,077 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-12 00:13:17,077 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2100162349] [2023-11-12 00:13:17,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:13:17,078 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-12 00:13:17,078 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d78ed5a-302d-4314-99aa-1f1643b70a9c/bin/utaipan-verify-NcY6lQBIFX/mathsat [2023-11-12 00:13:17,079 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d78ed5a-302d-4314-99aa-1f1643b70a9c/bin/utaipan-verify-NcY6lQBIFX/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-12 00:13:17,080 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d78ed5a-302d-4314-99aa-1f1643b70a9c/bin/utaipan-verify-NcY6lQBIFX/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2023-11-12 00:13:17,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:13:17,496 INFO L262 TraceCheckSpWp]: Trace formula consists of 228 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-12 00:13:17,499 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 00:13:17,509 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2023-11-12 00:13:17,519 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-11-12 00:13:18,183 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-12 00:13:18,185 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 9 [2023-11-12 00:13:18,209 INFO L322 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2023-11-12 00:13:18,210 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2023-11-12 00:13:18,228 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 00:13:18,228 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-12 00:13:18,228 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-12 00:13:18,228 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2100162349] [2023-11-12 00:13:18,228 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2100162349] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:13:18,229 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 00:13:18,229 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-12 00:13:18,229 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [141793152] [2023-11-12 00:13:18,229 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:13:18,230 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-12 00:13:18,230 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-12 00:13:18,230 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-12 00:13:18,231 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-12 00:13:18,231 INFO L87 Difference]: Start difference. First operand 604 states and 672 transitions. Second operand has 4 states, 3 states have (on average 18.0) internal successors, (54), 4 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:13:19,872 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:13:19,872 INFO L93 Difference]: Finished difference Result 576 states and 645 transitions. [2023-11-12 00:13:19,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-12 00:13:19,873 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 18.0) internal successors, (54), 4 states have internal predecessors, (54), 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 54 [2023-11-12 00:13:19,873 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:13:19,876 INFO L225 Difference]: With dead ends: 576 [2023-11-12 00:13:19,877 INFO L226 Difference]: Without dead ends: 576 [2023-11-12 00:13:19,877 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-12 00:13:19,878 INFO L413 NwaCegarLoop]: 202 mSDtfsCounter, 399 mSDsluCounter, 119 mSDsCounter, 0 mSdLazyCounter, 357 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 402 SdHoareTripleChecker+Valid, 321 SdHoareTripleChecker+Invalid, 399 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 357 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2023-11-12 00:13:19,878 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [402 Valid, 321 Invalid, 399 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 357 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2023-11-12 00:13:19,880 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 576 states. [2023-11-12 00:13:19,889 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 576 to 534. [2023-11-12 00:13:19,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 534 states, 340 states have (on average 1.5941176470588236) internal successors, (542), 528 states have internal predecessors, (542), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 4 states have call predecessors, (13), 13 states have call successors, (13) [2023-11-12 00:13:19,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 534 states to 534 states and 568 transitions. [2023-11-12 00:13:19,893 INFO L78 Accepts]: Start accepts. Automaton has 534 states and 568 transitions. Word has length 54 [2023-11-12 00:13:19,893 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:13:19,893 INFO L495 AbstractCegarLoop]: Abstraction has 534 states and 568 transitions. [2023-11-12 00:13:19,894 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 18.0) internal successors, (54), 4 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:13:19,894 INFO L276 IsEmpty]: Start isEmpty. Operand 534 states and 568 transitions. [2023-11-12 00:13:19,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2023-11-12 00:13:19,895 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:13:19,895 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 00:13:19,915 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d78ed5a-302d-4314-99aa-1f1643b70a9c/bin/utaipan-verify-NcY6lQBIFX/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2023-11-12 00:13:20,110 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d78ed5a-302d-4314-99aa-1f1643b70a9c/bin/utaipan-verify-NcY6lQBIFX/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-12 00:13:20,110 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr66REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 327 more)] === [2023-11-12 00:13:20,111 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:13:20,111 INFO L85 PathProgramCache]: Analyzing trace with hash -313883618, now seen corresponding path program 1 times [2023-11-12 00:13:20,111 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-12 00:13:20,112 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1328683276] [2023-11-12 00:13:20,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:13:20,112 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-12 00:13:20,112 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d78ed5a-302d-4314-99aa-1f1643b70a9c/bin/utaipan-verify-NcY6lQBIFX/mathsat [2023-11-12 00:13:20,113 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d78ed5a-302d-4314-99aa-1f1643b70a9c/bin/utaipan-verify-NcY6lQBIFX/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-12 00:13:20,136 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d78ed5a-302d-4314-99aa-1f1643b70a9c/bin/utaipan-verify-NcY6lQBIFX/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2023-11-12 00:13:20,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:13:20,389 INFO L262 TraceCheckSpWp]: Trace formula consists of 255 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-12 00:13:20,392 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 00:13:20,399 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2023-11-12 00:13:20,416 INFO L351 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 [2023-11-12 00:13:20,452 INFO L351 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 23 treesize of output 11 [2023-11-12 00:13:20,465 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 00:13:20,465 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-12 00:13:20,465 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-12 00:13:20,465 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1328683276] [2023-11-12 00:13:20,466 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1328683276] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:13:20,466 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 00:13:20,466 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-12 00:13:20,466 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1820442015] [2023-11-12 00:13:20,466 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:13:20,467 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-12 00:13:20,467 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-12 00:13:20,467 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-12 00:13:20,468 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-12 00:13:20,468 INFO L87 Difference]: Start difference. First operand 534 states and 568 transitions. Second operand has 5 states, 4 states have (on average 14.75) internal successors, (59), 5 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:13:22,386 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:13:22,386 INFO L93 Difference]: Finished difference Result 533 states and 567 transitions. [2023-11-12 00:13:22,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-12 00:13:22,387 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 14.75) internal successors, (59), 5 states have internal predecessors, (59), 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 59 [2023-11-12 00:13:22,387 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:13:22,390 INFO L225 Difference]: With dead ends: 533 [2023-11-12 00:13:22,391 INFO L226 Difference]: Without dead ends: 533 [2023-11-12 00:13:22,391 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-11-12 00:13:22,392 INFO L413 NwaCegarLoop]: 515 mSDtfsCounter, 4 mSDsluCounter, 822 mSDsCounter, 0 mSdLazyCounter, 728 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 1337 SdHoareTripleChecker+Invalid, 729 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 728 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2023-11-12 00:13:22,392 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 1337 Invalid, 729 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 728 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2023-11-12 00:13:22,394 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 533 states. [2023-11-12 00:13:22,403 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 533 to 533. [2023-11-12 00:13:22,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 533 states, 340 states have (on average 1.5911764705882352) internal successors, (541), 527 states have internal predecessors, (541), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 4 states have call predecessors, (13), 13 states have call successors, (13) [2023-11-12 00:13:22,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 533 states to 533 states and 567 transitions. [2023-11-12 00:13:22,406 INFO L78 Accepts]: Start accepts. Automaton has 533 states and 567 transitions. Word has length 59 [2023-11-12 00:13:22,407 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:13:22,407 INFO L495 AbstractCegarLoop]: Abstraction has 533 states and 567 transitions. [2023-11-12 00:13:22,407 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 14.75) internal successors, (59), 5 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:13:22,407 INFO L276 IsEmpty]: Start isEmpty. Operand 533 states and 567 transitions. [2023-11-12 00:13:22,408 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2023-11-12 00:13:22,408 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:13:22,408 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 00:13:22,425 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d78ed5a-302d-4314-99aa-1f1643b70a9c/bin/utaipan-verify-NcY6lQBIFX/mathsat -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)] Forceful destruction successful, exit code 0 [2023-11-12 00:13:22,624 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d78ed5a-302d-4314-99aa-1f1643b70a9c/bin/utaipan-verify-NcY6lQBIFX/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-12 00:13:22,625 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr67REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 327 more)] === [2023-11-12 00:13:22,625 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:13:22,625 INFO L85 PathProgramCache]: Analyzing trace with hash -313883617, now seen corresponding path program 1 times [2023-11-12 00:13:22,625 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-12 00:13:22,626 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1445835777] [2023-11-12 00:13:22,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:13:22,626 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-12 00:13:22,626 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d78ed5a-302d-4314-99aa-1f1643b70a9c/bin/utaipan-verify-NcY6lQBIFX/mathsat [2023-11-12 00:13:22,627 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d78ed5a-302d-4314-99aa-1f1643b70a9c/bin/utaipan-verify-NcY6lQBIFX/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-12 00:13:22,671 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d78ed5a-302d-4314-99aa-1f1643b70a9c/bin/utaipan-verify-NcY6lQBIFX/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2023-11-12 00:13:22,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:13:22,902 INFO L262 TraceCheckSpWp]: Trace formula consists of 255 conjuncts, 10 conjunts are in the unsatisfiable core [2023-11-12 00:13:22,904 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 00:13:22,917 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-11-12 00:13:22,946 INFO L351 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 [2023-11-12 00:13:22,953 INFO L351 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 [2023-11-12 00:13:23,022 INFO L351 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 [2023-11-12 00:13:23,046 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 00:13:23,046 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-12 00:13:23,046 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-12 00:13:23,046 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1445835777] [2023-11-12 00:13:23,046 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1445835777] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:13:23,047 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 00:13:23,047 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-12 00:13:23,047 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [925194143] [2023-11-12 00:13:23,047 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:13:23,048 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-12 00:13:23,048 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-12 00:13:23,048 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-12 00:13:23,048 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-12 00:13:23,049 INFO L87 Difference]: Start difference. First operand 533 states and 567 transitions. Second operand has 5 states, 4 states have (on average 14.75) internal successors, (59), 5 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:13:25,413 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:13:25,413 INFO L93 Difference]: Finished difference Result 532 states and 566 transitions. [2023-11-12 00:13:25,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-12 00:13:25,414 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 14.75) internal successors, (59), 5 states have internal predecessors, (59), 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 59 [2023-11-12 00:13:25,414 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:13:25,416 INFO L225 Difference]: With dead ends: 532 [2023-11-12 00:13:25,416 INFO L226 Difference]: Without dead ends: 532 [2023-11-12 00:13:25,417 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-11-12 00:13:25,417 INFO L413 NwaCegarLoop]: 515 mSDtfsCounter, 2 mSDsluCounter, 832 mSDsCounter, 0 mSdLazyCounter, 716 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 1347 SdHoareTripleChecker+Invalid, 717 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 716 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2023-11-12 00:13:25,418 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 1347 Invalid, 717 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 716 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2023-11-12 00:13:25,419 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 532 states. [2023-11-12 00:13:25,428 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 532 to 532. [2023-11-12 00:13:25,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 532 states, 339 states have (on average 1.592920353982301) internal successors, (540), 526 states have internal predecessors, (540), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 4 states have call predecessors, (13), 13 states have call successors, (13) [2023-11-12 00:13:25,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 532 states to 532 states and 566 transitions. [2023-11-12 00:13:25,431 INFO L78 Accepts]: Start accepts. Automaton has 532 states and 566 transitions. Word has length 59 [2023-11-12 00:13:25,432 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:13:25,432 INFO L495 AbstractCegarLoop]: Abstraction has 532 states and 566 transitions. [2023-11-12 00:13:25,432 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 14.75) internal successors, (59), 5 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:13:25,432 INFO L276 IsEmpty]: Start isEmpty. Operand 532 states and 566 transitions. [2023-11-12 00:13:25,433 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2023-11-12 00:13:25,433 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:13:25,433 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 00:13:25,448 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d78ed5a-302d-4314-99aa-1f1643b70a9c/bin/utaipan-verify-NcY6lQBIFX/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Ended with exit code 0 [2023-11-12 00:13:25,648 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d78ed5a-302d-4314-99aa-1f1643b70a9c/bin/utaipan-verify-NcY6lQBIFX/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-12 00:13:25,648 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr70REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 327 more)] === [2023-11-12 00:13:25,648 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:13:25,648 INFO L85 PathProgramCache]: Analyzing trace with hash -713533659, now seen corresponding path program 1 times [2023-11-12 00:13:25,649 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-12 00:13:25,649 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1615988262] [2023-11-12 00:13:25,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:13:25,649 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-12 00:13:25,650 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d78ed5a-302d-4314-99aa-1f1643b70a9c/bin/utaipan-verify-NcY6lQBIFX/mathsat [2023-11-12 00:13:25,650 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d78ed5a-302d-4314-99aa-1f1643b70a9c/bin/utaipan-verify-NcY6lQBIFX/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-12 00:13:25,653 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d78ed5a-302d-4314-99aa-1f1643b70a9c/bin/utaipan-verify-NcY6lQBIFX/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2023-11-12 00:13:25,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:13:25,936 INFO L262 TraceCheckSpWp]: Trace formula consists of 282 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-12 00:13:25,939 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 00:13:25,968 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 00:13:25,968 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-12 00:13:25,968 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-12 00:13:25,968 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1615988262] [2023-11-12 00:13:25,969 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1615988262] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:13:25,969 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 00:13:25,969 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-12 00:13:25,969 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [846269587] [2023-11-12 00:13:25,969 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:13:25,970 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-12 00:13:25,970 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-12 00:13:25,971 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-12 00:13:25,971 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-12 00:13:25,972 INFO L87 Difference]: Start difference. First operand 532 states and 566 transitions. Second operand has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-12 00:13:26,022 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:13:26,023 INFO L93 Difference]: Finished difference Result 535 states and 570 transitions. [2023-11-12 00:13:26,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-12 00:13:26,025 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 67 [2023-11-12 00:13:26,026 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:13:26,029 INFO L225 Difference]: With dead ends: 535 [2023-11-12 00:13:26,029 INFO L226 Difference]: Without dead ends: 535 [2023-11-12 00:13:26,030 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 64 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-12 00:13:26,031 INFO L413 NwaCegarLoop]: 515 mSDtfsCounter, 2 mSDsluCounter, 1025 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 1540 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-12 00:13:26,031 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 1540 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-12 00:13:26,033 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 535 states. [2023-11-12 00:13:26,042 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 535 to 535. [2023-11-12 00:13:26,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 535 states, 341 states have (on average 1.5923753665689149) internal successors, (543), 529 states have internal predecessors, (543), 13 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (14), 4 states have call predecessors, (14), 13 states have call successors, (14) [2023-11-12 00:13:26,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 535 states to 535 states and 570 transitions. [2023-11-12 00:13:26,046 INFO L78 Accepts]: Start accepts. Automaton has 535 states and 570 transitions. Word has length 67 [2023-11-12 00:13:26,046 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:13:26,047 INFO L495 AbstractCegarLoop]: Abstraction has 535 states and 570 transitions. [2023-11-12 00:13:26,047 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-12 00:13:26,047 INFO L276 IsEmpty]: Start isEmpty. Operand 535 states and 570 transitions. [2023-11-12 00:13:26,048 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2023-11-12 00:13:26,048 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:13:26,048 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 00:13:26,068 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d78ed5a-302d-4314-99aa-1f1643b70a9c/bin/utaipan-verify-NcY6lQBIFX/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2023-11-12 00:13:26,262 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d78ed5a-302d-4314-99aa-1f1643b70a9c/bin/utaipan-verify-NcY6lQBIFX/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-12 00:13:26,262 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr70REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 327 more)] === [2023-11-12 00:13:26,263 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:13:26,263 INFO L85 PathProgramCache]: Analyzing trace with hash 930817922, now seen corresponding path program 1 times [2023-11-12 00:13:26,263 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-12 00:13:26,263 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [593221878] [2023-11-12 00:13:26,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:13:26,264 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-12 00:13:26,264 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d78ed5a-302d-4314-99aa-1f1643b70a9c/bin/utaipan-verify-NcY6lQBIFX/mathsat [2023-11-12 00:13:26,265 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d78ed5a-302d-4314-99aa-1f1643b70a9c/bin/utaipan-verify-NcY6lQBIFX/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-12 00:13:26,266 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d78ed5a-302d-4314-99aa-1f1643b70a9c/bin/utaipan-verify-NcY6lQBIFX/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2023-11-12 00:13:26,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:13:26,573 INFO L262 TraceCheckSpWp]: Trace formula consists of 293 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-12 00:13:26,575 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 00:13:26,602 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 00:13:26,602 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-12 00:13:26,677 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 00:13:26,677 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-12 00:13:26,677 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [593221878] [2023-11-12 00:13:26,677 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [593221878] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-12 00:13:26,678 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1197593860] [2023-11-12 00:13:26,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:13:26,678 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-11-12 00:13:26,678 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d78ed5a-302d-4314-99aa-1f1643b70a9c/bin/utaipan-verify-NcY6lQBIFX/cvc4 [2023-11-12 00:13:26,684 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d78ed5a-302d-4314-99aa-1f1643b70a9c/bin/utaipan-verify-NcY6lQBIFX/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-11-12 00:13:26,707 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d78ed5a-302d-4314-99aa-1f1643b70a9c/bin/utaipan-verify-NcY6lQBIFX/cvc4 --incremental --print-success --lang smt (17)] Waiting until timeout for monitored process [2023-11-12 00:13:27,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:13:27,159 INFO L262 TraceCheckSpWp]: Trace formula consists of 293 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-12 00:13:27,160 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 00:13:27,175 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 00:13:27,175 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-12 00:13:27,214 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 00:13:27,214 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1197593860] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-12 00:13:27,215 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1586281675] [2023-11-12 00:13:27,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:13:27,215 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 00:13:27,215 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d78ed5a-302d-4314-99aa-1f1643b70a9c/bin/utaipan-verify-NcY6lQBIFX/z3 [2023-11-12 00:13:27,218 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d78ed5a-302d-4314-99aa-1f1643b70a9c/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 00:13:27,236 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d78ed5a-302d-4314-99aa-1f1643b70a9c/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2023-11-12 00:13:27,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:13:27,515 INFO L262 TraceCheckSpWp]: Trace formula consists of 293 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-12 00:13:27,518 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 00:13:27,533 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 00:13:27,534 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-12 00:13:27,567 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 00:13:27,567 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1586281675] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-12 00:13:27,567 INFO L185 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2023-11-12 00:13:27,568 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5, 5, 5, 5] total 8 [2023-11-12 00:13:27,568 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2101316975] [2023-11-12 00:13:27,568 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2023-11-12 00:13:27,569 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-12 00:13:27,569 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-12 00:13:27,570 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-12 00:13:27,570 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-11-12 00:13:27,570 INFO L87 Difference]: Start difference. First operand 535 states and 570 transitions. Second operand has 8 states, 8 states have (on average 8.75) internal successors, (70), 8 states have internal predecessors, (70), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-12 00:13:27,754 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:13:27,754 INFO L93 Difference]: Finished difference Result 547 states and 587 transitions. [2023-11-12 00:13:27,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-12 00:13:27,755 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 8.75) internal successors, (70), 8 states have internal predecessors, (70), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 68 [2023-11-12 00:13:27,755 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:13:27,758 INFO L225 Difference]: With dead ends: 547 [2023-11-12 00:13:27,758 INFO L226 Difference]: Without dead ends: 547 [2023-11-12 00:13:27,758 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 407 GetRequests, 396 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=62, Invalid=94, Unknown=0, NotChecked=0, Total=156 [2023-11-12 00:13:27,759 INFO L413 NwaCegarLoop]: 516 mSDtfsCounter, 10 mSDsluCounter, 1028 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 1544 SdHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-12 00:13:27,759 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 1544 Invalid, 58 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-12 00:13:27,761 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 547 states. [2023-11-12 00:13:27,770 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 547 to 545. [2023-11-12 00:13:27,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 545 states, 350 states have (on average 1.5942857142857143) internal successors, (558), 538 states have internal predecessors, (558), 13 states have call successors, (13), 3 states have call predecessors, (13), 4 states have return successors, (14), 4 states have call predecessors, (14), 13 states have call successors, (14) [2023-11-12 00:13:27,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 545 states to 545 states and 585 transitions. [2023-11-12 00:13:27,773 INFO L78 Accepts]: Start accepts. Automaton has 545 states and 585 transitions. Word has length 68 [2023-11-12 00:13:27,774 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:13:27,774 INFO L495 AbstractCegarLoop]: Abstraction has 545 states and 585 transitions. [2023-11-12 00:13:27,774 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.75) internal successors, (70), 8 states have internal predecessors, (70), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-12 00:13:27,774 INFO L276 IsEmpty]: Start isEmpty. Operand 545 states and 585 transitions. [2023-11-12 00:13:27,775 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2023-11-12 00:13:27,775 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:13:27,775 INFO L195 NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 00:13:27,784 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d78ed5a-302d-4314-99aa-1f1643b70a9c/bin/utaipan-verify-NcY6lQBIFX/cvc4 --incremental --print-success --lang smt (17)] Forceful destruction successful, exit code 0 [2023-11-12 00:13:27,989 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d78ed5a-302d-4314-99aa-1f1643b70a9c/bin/utaipan-verify-NcY6lQBIFX/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2023-11-12 00:13:28,188 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d78ed5a-302d-4314-99aa-1f1643b70a9c/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2023-11-12 00:13:28,380 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d78ed5a-302d-4314-99aa-1f1643b70a9c/bin/utaipan-verify-NcY6lQBIFX/cvc4 --incremental --print-success --lang smt,16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d78ed5a-302d-4314-99aa-1f1643b70a9c/bin/utaipan-verify-NcY6lQBIFX/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d78ed5a-302d-4314-99aa-1f1643b70a9c/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 00:13:28,380 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr70REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 327 more)] === [2023-11-12 00:13:28,381 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:13:28,381 INFO L85 PathProgramCache]: Analyzing trace with hash -1479014811, now seen corresponding path program 2 times [2023-11-12 00:13:28,381 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-12 00:13:28,382 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1925132113] [2023-11-12 00:13:28,382 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-12 00:13:28,382 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-12 00:13:28,382 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d78ed5a-302d-4314-99aa-1f1643b70a9c/bin/utaipan-verify-NcY6lQBIFX/mathsat [2023-11-12 00:13:28,383 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d78ed5a-302d-4314-99aa-1f1643b70a9c/bin/utaipan-verify-NcY6lQBIFX/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-12 00:13:28,384 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d78ed5a-302d-4314-99aa-1f1643b70a9c/bin/utaipan-verify-NcY6lQBIFX/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2023-11-12 00:13:28,860 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-12 00:13:28,860 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-12 00:13:28,875 INFO L262 TraceCheckSpWp]: Trace formula consists of 326 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-12 00:13:28,878 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 00:13:28,962 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 00:13:28,962 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-12 00:13:29,220 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 00:13:29,220 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-12 00:13:29,220 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1925132113] [2023-11-12 00:13:29,220 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1925132113] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-12 00:13:29,220 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1770940409] [2023-11-12 00:13:29,221 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-12 00:13:29,221 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-11-12 00:13:29,221 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d78ed5a-302d-4314-99aa-1f1643b70a9c/bin/utaipan-verify-NcY6lQBIFX/cvc4 [2023-11-12 00:13:29,225 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d78ed5a-302d-4314-99aa-1f1643b70a9c/bin/utaipan-verify-NcY6lQBIFX/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-11-12 00:13:29,255 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d78ed5a-302d-4314-99aa-1f1643b70a9c/bin/utaipan-verify-NcY6lQBIFX/cvc4 --incremental --print-success --lang smt (20)] Waiting until timeout for monitored process [2023-11-12 00:13:30,482 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-12 00:13:30,482 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-12 00:13:30,492 INFO L262 TraceCheckSpWp]: Trace formula consists of 326 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-12 00:13:30,495 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 00:13:30,531 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 00:13:30,532 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-12 00:13:30,632 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 00:13:30,632 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1770940409] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-12 00:13:30,633 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [742227735] [2023-11-12 00:13:30,633 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-12 00:13:30,633 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 00:13:30,633 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d78ed5a-302d-4314-99aa-1f1643b70a9c/bin/utaipan-verify-NcY6lQBIFX/z3 [2023-11-12 00:13:30,634 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d78ed5a-302d-4314-99aa-1f1643b70a9c/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 00:13:30,670 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d78ed5a-302d-4314-99aa-1f1643b70a9c/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process