./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/uthash-2.0.2/uthash_BER_test3-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 30e01a73 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2158525a-1afe-4598-87e5-25fcb9ee0aa3/bin/utaipan-verify-mE87zJ7Ire/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2158525a-1afe-4598-87e5-25fcb9ee0aa3/bin/utaipan-verify-mE87zJ7Ire/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2158525a-1afe-4598-87e5-25fcb9ee0aa3/bin/utaipan-verify-mE87zJ7Ire/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2158525a-1afe-4598-87e5-25fcb9ee0aa3/bin/utaipan-verify-mE87zJ7Ire/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_BER_test3-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2158525a-1afe-4598-87e5-25fcb9ee0aa3/bin/utaipan-verify-mE87zJ7Ire/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2158525a-1afe-4598-87e5-25fcb9ee0aa3/bin/utaipan-verify-mE87zJ7Ire --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash eb2eb63835edf753d5a467feb7a4cdd6d105155177d7d0cab8bf29c1b74dbaf6 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-30e01a7 [2023-11-23 20:39:35,437 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-23 20:39:35,565 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2158525a-1afe-4598-87e5-25fcb9ee0aa3/bin/utaipan-verify-mE87zJ7Ire/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2023-11-23 20:39:35,573 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-23 20:39:35,574 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-23 20:39:35,616 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-23 20:39:35,617 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-23 20:39:35,617 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-23 20:39:35,618 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-23 20:39:35,624 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-23 20:39:35,625 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-23 20:39:35,625 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-23 20:39:35,626 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-23 20:39:35,628 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-23 20:39:35,628 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-23 20:39:35,629 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-23 20:39:35,629 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-23 20:39:35,631 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-23 20:39:35,632 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-23 20:39:35,632 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-23 20:39:35,633 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-23 20:39:35,633 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-23 20:39:35,634 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-23 20:39:35,635 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-23 20:39:35,636 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-23 20:39:35,636 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-23 20:39:35,637 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-23 20:39:35,637 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-23 20:39:35,637 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-23 20:39:35,653 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-23 20:39:35,653 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-23 20:39:35,653 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-23 20:39:35,654 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-23 20:39:35,654 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-23 20:39:35,655 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-23 20:39:35,656 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-23 20:39:35,656 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-23 20:39:35,657 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-23 20:39:35,657 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-23 20:39:35,657 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-23 20:39:35,657 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 20:39:35,658 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-23 20:39:35,658 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-23 20:39:35,658 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-23 20:39:35,659 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-23 20:39:35,659 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-23 20:39:35,660 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-23 20:39:35,660 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-23 20:39:35,660 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_2158525a-1afe-4598-87e5-25fcb9ee0aa3/bin/utaipan-verify-mE87zJ7Ire/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2158525a-1afe-4598-87e5-25fcb9ee0aa3/bin/utaipan-verify-mE87zJ7Ire Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> eb2eb63835edf753d5a467feb7a4cdd6d105155177d7d0cab8bf29c1b74dbaf6 [2023-11-23 20:39:36,021 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-23 20:39:36,058 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-23 20:39:36,061 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-23 20:39:36,062 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-23 20:39:36,065 INFO L274 PluginConnector]: CDTParser initialized [2023-11-23 20:39:36,067 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2158525a-1afe-4598-87e5-25fcb9ee0aa3/bin/utaipan-verify-mE87zJ7Ire/../../sv-benchmarks/c/uthash-2.0.2/uthash_BER_test3-1.i [2023-11-23 20:39:39,307 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-23 20:39:39,702 INFO L384 CDTParser]: Found 1 translation units. [2023-11-23 20:39:39,703 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2158525a-1afe-4598-87e5-25fcb9ee0aa3/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test3-1.i [2023-11-23 20:39:39,737 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2158525a-1afe-4598-87e5-25fcb9ee0aa3/bin/utaipan-verify-mE87zJ7Ire/data/da3d5291c/ec6a46d50f984f7d9b34aee9e0197bb3/FLAG1217c3cbc [2023-11-23 20:39:39,756 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2158525a-1afe-4598-87e5-25fcb9ee0aa3/bin/utaipan-verify-mE87zJ7Ire/data/da3d5291c/ec6a46d50f984f7d9b34aee9e0197bb3 [2023-11-23 20:39:39,762 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-23 20:39:39,764 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-23 20:39:39,768 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-23 20:39:39,768 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-23 20:39:39,774 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-23 20:39:39,775 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 08:39:39" (1/1) ... [2023-11-23 20:39:39,777 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@f99613e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:39:39, skipping insertion in model container [2023-11-23 20:39:39,778 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 08:39:39" (1/1) ... [2023-11-23 20:39:39,876 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-23 20:39:40,456 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 20:39:40,471 ERROR L324 MainTranslator]: Unsupported Syntax: Found a cast between two array/pointer types of different sizes while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) [2023-11-23 20:39:40,472 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@7509df42 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:39:40, skipping insertion in model container [2023-11-23 20:39:40,472 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-23 20:39:40,472 INFO L186 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2023-11-23 20:39:40,475 INFO L158 Benchmark]: Toolchain (without parser) took 709.45ms. Allocated memory is still 121.6MB. Free memory was 82.6MB in the beginning and 62.9MB in the end (delta: 19.7MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2023-11-23 20:39:40,476 INFO L158 Benchmark]: CDTParser took 0.38ms. Allocated memory is still 121.6MB. Free memory is still 90.6MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-23 20:39:40,477 INFO L158 Benchmark]: CACSL2BoogieTranslator took 704.34ms. Allocated memory is still 121.6MB. Free memory was 82.4MB in the beginning and 62.9MB in the end (delta: 19.5MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2023-11-23 20:39:40,478 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.38ms. Allocated memory is still 121.6MB. Free memory is still 90.6MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 704.34ms. Allocated memory is still 121.6MB. Free memory was 82.4MB in the beginning and 62.9MB in the end (delta: 19.5MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 736]: Unsupported Syntax Found a cast between two array/pointer types of different sizes while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2158525a-1afe-4598-87e5-25fcb9ee0aa3/bin/utaipan-verify-mE87zJ7Ire/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2158525a-1afe-4598-87e5-25fcb9ee0aa3/bin/utaipan-verify-mE87zJ7Ire/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2158525a-1afe-4598-87e5-25fcb9ee0aa3/bin/utaipan-verify-mE87zJ7Ire/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2158525a-1afe-4598-87e5-25fcb9ee0aa3/bin/utaipan-verify-mE87zJ7Ire/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_BER_test3-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2158525a-1afe-4598-87e5-25fcb9ee0aa3/bin/utaipan-verify-mE87zJ7Ire/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2158525a-1afe-4598-87e5-25fcb9ee0aa3/bin/utaipan-verify-mE87zJ7Ire --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash eb2eb63835edf753d5a467feb7a4cdd6d105155177d7d0cab8bf29c1b74dbaf6 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-30e01a7 [2023-11-23 20:39:42,925 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-23 20:39:43,056 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2158525a-1afe-4598-87e5-25fcb9ee0aa3/bin/utaipan-verify-mE87zJ7Ire/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf [2023-11-23 20:39:43,067 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-23 20:39:43,068 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-23 20:39:43,119 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-23 20:39:43,119 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-23 20:39:43,120 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-23 20:39:43,121 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-23 20:39:43,126 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-23 20:39:43,127 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-23 20:39:43,127 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-23 20:39:43,127 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-23 20:39:43,129 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-23 20:39:43,129 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-23 20:39:43,130 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-23 20:39:43,131 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-23 20:39:43,131 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-23 20:39:43,132 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-23 20:39:43,133 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-23 20:39:43,133 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-23 20:39:43,134 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-23 20:39:43,134 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-23 20:39:43,135 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-23 20:39:43,135 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-23 20:39:43,136 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-23 20:39:43,136 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-23 20:39:43,137 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-23 20:39:43,137 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-11-23 20:39:43,137 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-11-23 20:39:43,139 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-23 20:39:43,139 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-23 20:39:43,140 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-23 20:39:43,140 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-23 20:39:43,140 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-23 20:39:43,140 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-23 20:39:43,141 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-23 20:39:43,142 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 20:39:43,142 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-23 20:39:43,142 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-23 20:39:43,142 INFO L153 SettingsManager]: * Trace refinement strategy=WALRUS [2023-11-23 20:39:43,143 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-11-23 20:39:43,143 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-23 20:39:43,143 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-23 20:39:43,144 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-23 20:39:43,144 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_2158525a-1afe-4598-87e5-25fcb9ee0aa3/bin/utaipan-verify-mE87zJ7Ire/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2158525a-1afe-4598-87e5-25fcb9ee0aa3/bin/utaipan-verify-mE87zJ7Ire Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> eb2eb63835edf753d5a467feb7a4cdd6d105155177d7d0cab8bf29c1b74dbaf6 [2023-11-23 20:39:43,503 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-23 20:39:43,525 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-23 20:39:43,528 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-23 20:39:43,529 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-23 20:39:43,530 INFO L274 PluginConnector]: CDTParser initialized [2023-11-23 20:39:43,531 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2158525a-1afe-4598-87e5-25fcb9ee0aa3/bin/utaipan-verify-mE87zJ7Ire/../../sv-benchmarks/c/uthash-2.0.2/uthash_BER_test3-1.i [2023-11-23 20:39:46,721 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-23 20:39:47,153 INFO L384 CDTParser]: Found 1 translation units. [2023-11-23 20:39:47,154 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2158525a-1afe-4598-87e5-25fcb9ee0aa3/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test3-1.i [2023-11-23 20:39:47,183 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2158525a-1afe-4598-87e5-25fcb9ee0aa3/bin/utaipan-verify-mE87zJ7Ire/data/e11d059da/2b4fc328a734433f9339739794fa43bc/FLAG70e03ce0e [2023-11-23 20:39:47,201 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2158525a-1afe-4598-87e5-25fcb9ee0aa3/bin/utaipan-verify-mE87zJ7Ire/data/e11d059da/2b4fc328a734433f9339739794fa43bc [2023-11-23 20:39:47,206 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-23 20:39:47,208 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-23 20:39:47,211 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-23 20:39:47,212 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-23 20:39:47,217 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-23 20:39:47,217 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 08:39:47" (1/1) ... [2023-11-23 20:39:47,219 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@432144a6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:39:47, skipping insertion in model container [2023-11-23 20:39:47,219 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 08:39:47" (1/1) ... [2023-11-23 20:39:47,303 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-23 20:39:47,995 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 20:39:48,017 INFO L199 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2023-11-23 20:39:48,043 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-23 20:39:48,225 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 20:39:48,231 INFO L202 MainTranslator]: Completed pre-run [2023-11-23 20:39:48,360 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 20:39:48,409 WARN L675 CHandler]: The function memcmp is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 20:39:48,417 INFO L206 MainTranslator]: Completed translation [2023-11-23 20:39:48,417 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:39:48 WrapperNode [2023-11-23 20:39:48,418 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-23 20:39:48,419 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-23 20:39:48,419 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-23 20:39:48,419 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-23 20:39:48,427 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:39:48" (1/1) ... [2023-11-23 20:39:48,474 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:39:48" (1/1) ... [2023-11-23 20:39:48,588 INFO L138 Inliner]: procedures = 180, calls = 287, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 1047 [2023-11-23 20:39:48,594 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-23 20:39:48,595 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-23 20:39:48,596 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-23 20:39:48,596 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-23 20:39:48,605 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:39:48" (1/1) ... [2023-11-23 20:39:48,606 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:39:48" (1/1) ... [2023-11-23 20:39:48,621 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:39:48" (1/1) ... [2023-11-23 20:39:48,630 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:39:48" (1/1) ... [2023-11-23 20:39:48,704 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:39:48" (1/1) ... [2023-11-23 20:39:48,715 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:39:48" (1/1) ... [2023-11-23 20:39:48,720 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:39:48" (1/1) ... [2023-11-23 20:39:48,727 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:39:48" (1/1) ... [2023-11-23 20:39:48,740 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-23 20:39:48,741 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-23 20:39:48,741 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-23 20:39:48,741 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-23 20:39:48,742 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:39:48" (1/1) ... [2023-11-23 20:39:48,755 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 20:39:48,771 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2158525a-1afe-4598-87e5-25fcb9ee0aa3/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 20:39:48,788 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2158525a-1afe-4598-87e5-25fcb9ee0aa3/bin/utaipan-verify-mE87zJ7Ire/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-23 20:39:48,804 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2158525a-1afe-4598-87e5-25fcb9ee0aa3/bin/utaipan-verify-mE87zJ7Ire/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-23 20:39:48,858 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-11-23 20:39:48,858 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-11-23 20:39:48,858 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2023-11-23 20:39:48,858 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2023-11-23 20:39:48,859 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-11-23 20:39:48,859 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-11-23 20:39:48,861 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2023-11-23 20:39:48,861 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2023-11-23 20:39:48,862 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-23 20:39:48,862 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-23 20:39:48,862 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-23 20:39:48,862 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-23 20:39:48,862 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2023-11-23 20:39:48,863 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-23 20:39:48,863 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-23 20:39:48,863 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2023-11-23 20:39:48,864 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2023-11-23 20:39:48,864 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-23 20:39:48,865 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-23 20:39:49,131 INFO L241 CfgBuilder]: Building ICFG [2023-11-23 20:39:49,134 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-23 20:39:49,173 WARN L821 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2023-11-23 20:39:54,037 INFO L282 CfgBuilder]: Performing block encoding [2023-11-23 20:39:54,244 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-23 20:39:54,244 INFO L309 CfgBuilder]: Removed 63 assume(true) statements. [2023-11-23 20:39:54,245 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 08:39:54 BoogieIcfgContainer [2023-11-23 20:39:54,246 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-23 20:39:54,248 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-23 20:39:54,249 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-23 20:39:54,252 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-23 20:39:54,252 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 08:39:47" (1/3) ... [2023-11-23 20:39:54,253 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@14aab8bb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 08:39:54, skipping insertion in model container [2023-11-23 20:39:54,253 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:39:48" (2/3) ... [2023-11-23 20:39:54,253 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@14aab8bb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 08:39:54, skipping insertion in model container [2023-11-23 20:39:54,254 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 08:39:54" (3/3) ... [2023-11-23 20:39:54,256 INFO L112 eAbstractionObserver]: Analyzing ICFG uthash_BER_test3-1.i [2023-11-23 20:39:54,275 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-23 20:39:54,276 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 533 error locations. [2023-11-23 20:39:54,357 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-23 20:39:54,365 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;@108c2b45, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-23 20:39:54,365 INFO L358 AbstractCegarLoop]: Starting to check reachability of 533 error locations. [2023-11-23 20:39:54,376 INFO L276 IsEmpty]: Start isEmpty. Operand has 977 states, 433 states have (on average 2.5219399538106235) internal successors, (1092), 970 states have internal predecessors, (1092), 10 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (10), 6 states have call predecessors, (10), 10 states have call successors, (10) [2023-11-23 20:39:54,381 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2023-11-23 20:39:54,382 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 20:39:54,382 INFO L195 NwaCegarLoop]: trace histogram [1, 1] [2023-11-23 20:39:54,383 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 530 more)] === [2023-11-23 20:39:54,387 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 20:39:54,388 INFO L85 PathProgramCache]: Analyzing trace with hash 54582, now seen corresponding path program 1 times [2023-11-23 20:39:54,396 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-23 20:39:54,397 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2048235628] [2023-11-23 20:39:54,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 20:39:54,398 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-23 20:39:54,398 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2158525a-1afe-4598-87e5-25fcb9ee0aa3/bin/utaipan-verify-mE87zJ7Ire/mathsat [2023-11-23 20:39:54,399 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2158525a-1afe-4598-87e5-25fcb9ee0aa3/bin/utaipan-verify-mE87zJ7Ire/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-23 20:39:54,404 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2158525a-1afe-4598-87e5-25fcb9ee0aa3/bin/utaipan-verify-mE87zJ7Ire/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2023-11-23 20:39:54,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 20:39:54,549 INFO L262 TraceCheckSpWp]: Trace formula consists of 24 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-23 20:39:54,555 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 20:39:54,626 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2023-11-23 20:39:54,640 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 20:39:54,640 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 20:39:54,641 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-23 20:39:54,641 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2048235628] [2023-11-23 20:39:54,642 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2048235628] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 20:39:54,642 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 20:39:54,642 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-23 20:39:54,644 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [479294719] [2023-11-23 20:39:54,645 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 20:39:54,649 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 20:39:54,650 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-23 20:39:54,677 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 20:39:54,678 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 20:39:54,682 INFO L87 Difference]: Start difference. First operand has 977 states, 433 states have (on average 2.5219399538106235) internal successors, (1092), 970 states have internal predecessors, (1092), 10 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (10), 6 states have call predecessors, (10), 10 states have call successors, (10) Second operand has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 20:39:56,919 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 20:39:56,920 INFO L93 Difference]: Finished difference Result 974 states and 1039 transitions. [2023-11-23 20:39:56,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 20:39:56,925 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 2 [2023-11-23 20:39:56,926 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 20:39:56,953 INFO L225 Difference]: With dead ends: 974 [2023-11-23 20:39:56,953 INFO L226 Difference]: Without dead ends: 973 [2023-11-23 20:39:56,955 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 20:39:56,960 INFO L413 NwaCegarLoop]: 542 mSDtfsCounter, 901 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 558 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 909 SdHoareTripleChecker+Valid, 594 SdHoareTripleChecker+Invalid, 574 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 558 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2023-11-23 20:39:56,961 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [909 Valid, 594 Invalid, 574 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 558 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2023-11-23 20:39:56,979 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 973 states. [2023-11-23 20:39:57,040 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 973 to 964. [2023-11-23 20:39:57,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 964 states, 436 states have (on average 2.3211009174311927) internal successors, (1012), 957 states have internal predecessors, (1012), 10 states have call successors, (10), 3 states have call predecessors, (10), 2 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) [2023-11-23 20:39:57,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 964 states to 964 states and 1030 transitions. [2023-11-23 20:39:57,052 INFO L78 Accepts]: Start accepts. Automaton has 964 states and 1030 transitions. Word has length 2 [2023-11-23 20:39:57,052 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 20:39:57,052 INFO L495 AbstractCegarLoop]: Abstraction has 964 states and 1030 transitions. [2023-11-23 20:39:57,052 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 20:39:57,052 INFO L276 IsEmpty]: Start isEmpty. Operand 964 states and 1030 transitions. [2023-11-23 20:39:57,053 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2023-11-23 20:39:57,053 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 20:39:57,053 INFO L195 NwaCegarLoop]: trace histogram [1, 1] [2023-11-23 20:39:57,056 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2158525a-1afe-4598-87e5-25fcb9ee0aa3/bin/utaipan-verify-mE87zJ7Ire/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Ended with exit code 0 [2023-11-23 20:39:57,253 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2158525a-1afe-4598-87e5-25fcb9ee0aa3/bin/utaipan-verify-mE87zJ7Ire/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-23 20:39:57,254 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 530 more)] === [2023-11-23 20:39:57,254 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 20:39:57,255 INFO L85 PathProgramCache]: Analyzing trace with hash 54583, now seen corresponding path program 1 times [2023-11-23 20:39:57,255 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-23 20:39:57,256 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [817683137] [2023-11-23 20:39:57,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 20:39:57,256 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-23 20:39:57,256 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2158525a-1afe-4598-87e5-25fcb9ee0aa3/bin/utaipan-verify-mE87zJ7Ire/mathsat [2023-11-23 20:39:57,258 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2158525a-1afe-4598-87e5-25fcb9ee0aa3/bin/utaipan-verify-mE87zJ7Ire/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-23 20:39:57,272 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2158525a-1afe-4598-87e5-25fcb9ee0aa3/bin/utaipan-verify-mE87zJ7Ire/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2023-11-23 20:39:57,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 20:39:57,397 INFO L262 TraceCheckSpWp]: Trace formula consists of 24 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-23 20:39:57,399 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 20:39:57,411 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-11-23 20:39:57,424 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 20:39:57,425 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 20:39:57,425 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-23 20:39:57,429 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [817683137] [2023-11-23 20:39:57,429 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [817683137] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 20:39:57,431 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 20:39:57,431 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-23 20:39:57,431 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1963039981] [2023-11-23 20:39:57,431 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 20:39:57,432 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 20:39:57,433 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-23 20:39:57,433 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 20:39:57,434 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 20:39:57,434 INFO L87 Difference]: Start difference. First operand 964 states and 1030 transitions. Second operand has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 20:40:01,130 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 20:40:01,130 INFO L93 Difference]: Finished difference Result 1339 states and 1446 transitions. [2023-11-23 20:40:01,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 20:40:01,131 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 2 [2023-11-23 20:40:01,131 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 20:40:01,139 INFO L225 Difference]: With dead ends: 1339 [2023-11-23 20:40:01,140 INFO L226 Difference]: Without dead ends: 1339 [2023-11-23 20:40:01,140 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 20:40:01,142 INFO L413 NwaCegarLoop]: 767 mSDtfsCounter, 405 mSDsluCounter, 493 mSDsCounter, 0 mSdLazyCounter, 780 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 410 SdHoareTripleChecker+Valid, 1260 SdHoareTripleChecker+Invalid, 785 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 780 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2023-11-23 20:40:01,144 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [410 Valid, 1260 Invalid, 785 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 780 Invalid, 0 Unknown, 0 Unchecked, 3.6s Time] [2023-11-23 20:40:01,149 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1339 states. [2023-11-23 20:40:01,187 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1339 to 1133. [2023-11-23 20:40:01,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1133 states, 606 states have (on average 2.298679867986799) internal successors, (1393), 1126 states have internal predecessors, (1393), 10 states have call successors, (10), 3 states have call predecessors, (10), 2 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) [2023-11-23 20:40:01,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1133 states to 1133 states and 1411 transitions. [2023-11-23 20:40:01,200 INFO L78 Accepts]: Start accepts. Automaton has 1133 states and 1411 transitions. Word has length 2 [2023-11-23 20:40:01,201 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 20:40:01,201 INFO L495 AbstractCegarLoop]: Abstraction has 1133 states and 1411 transitions. [2023-11-23 20:40:01,201 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 20:40:01,202 INFO L276 IsEmpty]: Start isEmpty. Operand 1133 states and 1411 transitions. [2023-11-23 20:40:01,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2023-11-23 20:40:01,204 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 20:40:01,204 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2023-11-23 20:40:01,208 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2158525a-1afe-4598-87e5-25fcb9ee0aa3/bin/utaipan-verify-mE87zJ7Ire/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2023-11-23 20:40:01,408 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2158525a-1afe-4598-87e5-25fcb9ee0aa3/bin/utaipan-verify-mE87zJ7Ire/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-23 20:40:01,408 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 530 more)] === [2023-11-23 20:40:01,409 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 20:40:01,409 INFO L85 PathProgramCache]: Analyzing trace with hash -1132069568, now seen corresponding path program 1 times [2023-11-23 20:40:01,410 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-23 20:40:01,410 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [531364758] [2023-11-23 20:40:01,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 20:40:01,410 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-23 20:40:01,410 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2158525a-1afe-4598-87e5-25fcb9ee0aa3/bin/utaipan-verify-mE87zJ7Ire/mathsat [2023-11-23 20:40:01,412 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2158525a-1afe-4598-87e5-25fcb9ee0aa3/bin/utaipan-verify-mE87zJ7Ire/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-23 20:40:01,436 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2158525a-1afe-4598-87e5-25fcb9ee0aa3/bin/utaipan-verify-mE87zJ7Ire/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2023-11-23 20:40:01,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 20:40:01,640 INFO L262 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-23 20:40:01,643 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 20:40:01,696 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-11-23 20:40:01,706 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2023-11-23 20:40:01,818 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-23 20:40:01,821 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 9 [2023-11-23 20:40:01,849 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2023-11-23 20:40:01,849 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2023-11-23 20:40:01,873 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 20:40:01,873 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 20:40:01,874 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-23 20:40:01,874 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [531364758] [2023-11-23 20:40:01,877 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [531364758] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 20:40:01,877 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 20:40:01,877 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-23 20:40:01,877 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [447101078] [2023-11-23 20:40:01,877 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 20:40:01,878 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-23 20:40:01,878 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-23 20:40:01,879 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-23 20:40:01,879 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-23 20:40:01,879 INFO L87 Difference]: Start difference. First operand 1133 states and 1411 transitions. Second operand has 4 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) [2023-11-23 20:40:05,091 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 20:40:05,091 INFO L93 Difference]: Finished difference Result 1136 states and 1416 transitions. [2023-11-23 20:40:05,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-23 20:40:05,092 INFO L78 Accepts]: Start accepts. Automaton has has 4 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 [2023-11-23 20:40:05,092 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 20:40:05,099 INFO L225 Difference]: With dead ends: 1136 [2023-11-23 20:40:05,099 INFO L226 Difference]: Without dead ends: 1136 [2023-11-23 20:40:05,100 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-23 20:40:05,101 INFO L413 NwaCegarLoop]: 277 mSDtfsCounter, 986 mSDsluCounter, 39 mSDsCounter, 0 mSdLazyCounter, 842 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 994 SdHoareTripleChecker+Valid, 316 SdHoareTripleChecker+Invalid, 859 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 842 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2023-11-23 20:40:05,101 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [994 Valid, 316 Invalid, 859 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 842 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2023-11-23 20:40:05,105 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1136 states. [2023-11-23 20:40:05,121 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1136 to 953. [2023-11-23 20:40:05,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 953 states, 436 states have (on average 2.293577981651376) internal successors, (1000), 946 states have internal predecessors, (1000), 10 states have call successors, (10), 3 states have call predecessors, (10), 2 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) [2023-11-23 20:40:05,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 953 states to 953 states and 1018 transitions. [2023-11-23 20:40:05,128 INFO L78 Accepts]: Start accepts. Automaton has 953 states and 1018 transitions. Word has length 6 [2023-11-23 20:40:05,129 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 20:40:05,129 INFO L495 AbstractCegarLoop]: Abstraction has 953 states and 1018 transitions. [2023-11-23 20:40:05,129 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 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) [2023-11-23 20:40:05,129 INFO L276 IsEmpty]: Start isEmpty. Operand 953 states and 1018 transitions. [2023-11-23 20:40:05,130 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2023-11-23 20:40:05,130 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 20:40:05,130 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-23 20:40:05,137 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2158525a-1afe-4598-87e5-25fcb9ee0aa3/bin/utaipan-verify-mE87zJ7Ire/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Ended with exit code 0 [2023-11-23 20:40:05,333 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2158525a-1afe-4598-87e5-25fcb9ee0aa3/bin/utaipan-verify-mE87zJ7Ire/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-23 20:40:05,333 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 530 more)] === [2023-11-23 20:40:05,334 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 20:40:05,334 INFO L85 PathProgramCache]: Analyzing trace with hash -734418257, now seen corresponding path program 1 times [2023-11-23 20:40:05,335 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-23 20:40:05,335 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1163497589] [2023-11-23 20:40:05,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 20:40:05,335 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-23 20:40:05,336 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2158525a-1afe-4598-87e5-25fcb9ee0aa3/bin/utaipan-verify-mE87zJ7Ire/mathsat [2023-11-23 20:40:05,338 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2158525a-1afe-4598-87e5-25fcb9ee0aa3/bin/utaipan-verify-mE87zJ7Ire/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-23 20:40:05,340 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2158525a-1afe-4598-87e5-25fcb9ee0aa3/bin/utaipan-verify-mE87zJ7Ire/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2023-11-23 20:40:05,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 20:40:05,471 INFO L262 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-23 20:40:05,473 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 20:40:05,479 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2023-11-23 20:40:05,495 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 20:40:05,495 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 20:40:05,495 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-23 20:40:05,495 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1163497589] [2023-11-23 20:40:05,496 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1163497589] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 20:40:05,496 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 20:40:05,496 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-23 20:40:05,496 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1148468943] [2023-11-23 20:40:05,496 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 20:40:05,497 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 20:40:05,497 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-23 20:40:05,497 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 20:40:05,497 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 20:40:05,498 INFO L87 Difference]: Start difference. First operand 953 states and 1018 transitions. Second operand has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 20:40:08,051 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 20:40:08,052 INFO L93 Difference]: Finished difference Result 1247 states and 1342 transitions. [2023-11-23 20:40:08,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 20:40:08,054 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2023-11-23 20:40:08,054 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 20:40:08,061 INFO L225 Difference]: With dead ends: 1247 [2023-11-23 20:40:08,061 INFO L226 Difference]: Without dead ends: 1247 [2023-11-23 20:40:08,061 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 20:40:08,062 INFO L413 NwaCegarLoop]: 789 mSDtfsCounter, 895 mSDsluCounter, 214 mSDsCounter, 0 mSdLazyCounter, 759 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 903 SdHoareTripleChecker+Valid, 1003 SdHoareTripleChecker+Invalid, 813 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 759 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2023-11-23 20:40:08,063 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [903 Valid, 1003 Invalid, 813 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 759 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2023-11-23 20:40:08,066 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1247 states. [2023-11-23 20:40:08,083 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1247 to 904. [2023-11-23 20:40:08,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 904 states, 436 states have (on average 2.1811926605504586) internal successors, (951), 897 states have internal predecessors, (951), 10 states have call successors, (10), 3 states have call predecessors, (10), 2 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) [2023-11-23 20:40:08,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 904 states to 904 states and 969 transitions. [2023-11-23 20:40:08,090 INFO L78 Accepts]: Start accepts. Automaton has 904 states and 969 transitions. Word has length 7 [2023-11-23 20:40:08,090 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 20:40:08,091 INFO L495 AbstractCegarLoop]: Abstraction has 904 states and 969 transitions. [2023-11-23 20:40:08,091 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 20:40:08,091 INFO L276 IsEmpty]: Start isEmpty. Operand 904 states and 969 transitions. [2023-11-23 20:40:08,091 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2023-11-23 20:40:08,092 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 20:40:08,092 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-23 20:40:08,096 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2158525a-1afe-4598-87e5-25fcb9ee0aa3/bin/utaipan-verify-mE87zJ7Ire/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2023-11-23 20:40:08,294 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2158525a-1afe-4598-87e5-25fcb9ee0aa3/bin/utaipan-verify-mE87zJ7Ire/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-23 20:40:08,295 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 530 more)] === [2023-11-23 20:40:08,295 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 20:40:08,295 INFO L85 PathProgramCache]: Analyzing trace with hash -734418256, now seen corresponding path program 1 times [2023-11-23 20:40:08,295 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-23 20:40:08,296 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1500351814] [2023-11-23 20:40:08,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 20:40:08,296 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-23 20:40:08,296 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2158525a-1afe-4598-87e5-25fcb9ee0aa3/bin/utaipan-verify-mE87zJ7Ire/mathsat [2023-11-23 20:40:08,298 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2158525a-1afe-4598-87e5-25fcb9ee0aa3/bin/utaipan-verify-mE87zJ7Ire/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-23 20:40:08,340 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2158525a-1afe-4598-87e5-25fcb9ee0aa3/bin/utaipan-verify-mE87zJ7Ire/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2023-11-23 20:40:08,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 20:40:08,449 INFO L262 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-23 20:40:08,452 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 20:40:08,468 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-11-23 20:40:08,504 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 20:40:08,506 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 20:40:08,506 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-23 20:40:08,509 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1500351814] [2023-11-23 20:40:08,509 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1500351814] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 20:40:08,509 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 20:40:08,509 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-23 20:40:08,510 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1386260430] [2023-11-23 20:40:08,510 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 20:40:08,510 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 20:40:08,515 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-23 20:40:08,516 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 20:40:08,516 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 20:40:08,516 INFO L87 Difference]: Start difference. First operand 904 states and 969 transitions. Second operand has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 20:40:12,343 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 20:40:12,343 INFO L93 Difference]: Finished difference Result 1317 states and 1415 transitions. [2023-11-23 20:40:12,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 20:40:12,345 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2023-11-23 20:40:12,345 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 20:40:12,352 INFO L225 Difference]: With dead ends: 1317 [2023-11-23 20:40:12,352 INFO L226 Difference]: Without dead ends: 1317 [2023-11-23 20:40:12,353 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 20:40:12,354 INFO L413 NwaCegarLoop]: 962 mSDtfsCounter, 613 mSDsluCounter, 364 mSDsCounter, 0 mSdLazyCounter, 798 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 613 SdHoareTripleChecker+Valid, 1326 SdHoareTripleChecker+Invalid, 810 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 798 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.8s IncrementalHoareTripleChecker+Time [2023-11-23 20:40:12,354 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [613 Valid, 1326 Invalid, 810 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 798 Invalid, 0 Unknown, 0 Unchecked, 3.8s Time] [2023-11-23 20:40:12,358 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1317 states. [2023-11-23 20:40:12,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1317 to 917. [2023-11-23 20:40:12,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 917 states, 459 states have (on average 2.1742919389978215) internal successors, (998), 910 states have internal predecessors, (998), 10 states have call successors, (10), 3 states have call predecessors, (10), 2 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) [2023-11-23 20:40:12,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 917 states to 917 states and 1016 transitions. [2023-11-23 20:40:12,383 INFO L78 Accepts]: Start accepts. Automaton has 917 states and 1016 transitions. Word has length 7 [2023-11-23 20:40:12,384 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 20:40:12,384 INFO L495 AbstractCegarLoop]: Abstraction has 917 states and 1016 transitions. [2023-11-23 20:40:12,384 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 20:40:12,384 INFO L276 IsEmpty]: Start isEmpty. Operand 917 states and 1016 transitions. [2023-11-23 20:40:12,385 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2023-11-23 20:40:12,385 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 20:40:12,385 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 20:40:12,393 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2158525a-1afe-4598-87e5-25fcb9ee0aa3/bin/utaipan-verify-mE87zJ7Ire/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2023-11-23 20:40:12,588 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2158525a-1afe-4598-87e5-25fcb9ee0aa3/bin/utaipan-verify-mE87zJ7Ire/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-23 20:40:12,588 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr525REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 530 more)] === [2023-11-23 20:40:12,588 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 20:40:12,588 INFO L85 PathProgramCache]: Analyzing trace with hash -1228521271, now seen corresponding path program 1 times [2023-11-23 20:40:12,589 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-23 20:40:12,589 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [241227779] [2023-11-23 20:40:12,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 20:40:12,589 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-23 20:40:12,589 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2158525a-1afe-4598-87e5-25fcb9ee0aa3/bin/utaipan-verify-mE87zJ7Ire/mathsat [2023-11-23 20:40:12,590 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2158525a-1afe-4598-87e5-25fcb9ee0aa3/bin/utaipan-verify-mE87zJ7Ire/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-23 20:40:12,591 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2158525a-1afe-4598-87e5-25fcb9ee0aa3/bin/utaipan-verify-mE87zJ7Ire/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2023-11-23 20:40:12,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 20:40:12,759 INFO L262 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-23 20:40:12,762 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 20:40:12,854 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 20:40:12,855 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 20:40:12,855 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-23 20:40:12,855 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [241227779] [2023-11-23 20:40:12,855 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [241227779] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 20:40:12,855 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 20:40:12,855 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-23 20:40:12,855 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [229754479] [2023-11-23 20:40:12,856 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 20:40:12,856 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-23 20:40:12,856 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-23 20:40:12,857 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-23 20:40:12,857 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-23 20:40:12,857 INFO L87 Difference]: Start difference. First operand 917 states and 1016 transitions. Second operand has 4 states, 4 states have (on average 2.5) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 20:40:14,971 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 20:40:14,971 INFO L93 Difference]: Finished difference Result 1325 states and 1458 transitions. [2023-11-23 20:40:14,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-23 20:40:14,974 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2023-11-23 20:40:14,974 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 20:40:14,982 INFO L225 Difference]: With dead ends: 1325 [2023-11-23 20:40:14,982 INFO L226 Difference]: Without dead ends: 1325 [2023-11-23 20:40:14,983 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-23 20:40:14,983 INFO L413 NwaCegarLoop]: 894 mSDtfsCounter, 497 mSDsluCounter, 1518 mSDsCounter, 0 mSdLazyCounter, 557 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 499 SdHoareTripleChecker+Valid, 2412 SdHoareTripleChecker+Invalid, 564 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 557 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2023-11-23 20:40:14,984 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [499 Valid, 2412 Invalid, 564 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 557 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2023-11-23 20:40:14,987 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1325 states. [2023-11-23 20:40:15,007 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1325 to 1117. [2023-11-23 20:40:15,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1117 states, 659 states have (on average 2.1441578148710168) internal successors, (1413), 1110 states have internal predecessors, (1413), 10 states have call successors, (10), 3 states have call predecessors, (10), 2 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) [2023-11-23 20:40:15,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1117 states to 1117 states and 1431 transitions. [2023-11-23 20:40:15,014 INFO L78 Accepts]: Start accepts. Automaton has 1117 states and 1431 transitions. Word has length 10 [2023-11-23 20:40:15,014 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 20:40:15,014 INFO L495 AbstractCegarLoop]: Abstraction has 1117 states and 1431 transitions. [2023-11-23 20:40:15,014 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 20:40:15,015 INFO L276 IsEmpty]: Start isEmpty. Operand 1117 states and 1431 transitions. [2023-11-23 20:40:15,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2023-11-23 20:40:15,015 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 20:40:15,015 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 20:40:15,020 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2158525a-1afe-4598-87e5-25fcb9ee0aa3/bin/utaipan-verify-mE87zJ7Ire/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Ended with exit code 0 [2023-11-23 20:40:15,220 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2158525a-1afe-4598-87e5-25fcb9ee0aa3/bin/utaipan-verify-mE87zJ7Ire/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-23 20:40:15,220 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr531ASSERT_VIOLATIONMEMORY_LEAK === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 530 more)] === [2023-11-23 20:40:15,220 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 20:40:15,221 INFO L85 PathProgramCache]: Analyzing trace with hash 570547524, now seen corresponding path program 1 times [2023-11-23 20:40:15,221 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-23 20:40:15,221 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1053436440] [2023-11-23 20:40:15,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 20:40:15,221 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-23 20:40:15,221 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2158525a-1afe-4598-87e5-25fcb9ee0aa3/bin/utaipan-verify-mE87zJ7Ire/mathsat [2023-11-23 20:40:15,222 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2158525a-1afe-4598-87e5-25fcb9ee0aa3/bin/utaipan-verify-mE87zJ7Ire/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-23 20:40:15,225 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2158525a-1afe-4598-87e5-25fcb9ee0aa3/bin/utaipan-verify-mE87zJ7Ire/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2023-11-23 20:40:15,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 20:40:15,423 INFO L262 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-23 20:40:15,426 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 20:40:15,439 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-23 20:40:15,439 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-23 20:40:15,440 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-23 20:40:15,448 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 39 [2023-11-23 20:40:15,512 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-23 20:40:15,513 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 70 treesize of output 26 [2023-11-23 20:40:15,529 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 20:40:15,529 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 20:40:15,530 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-23 20:40:15,530 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1053436440] [2023-11-23 20:40:15,530 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1053436440] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 20:40:15,530 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 20:40:15,530 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-23 20:40:15,530 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [866571020] [2023-11-23 20:40:15,531 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 20:40:15,531 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-23 20:40:15,531 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-23 20:40:15,532 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-23 20:40:15,532 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-23 20:40:15,532 INFO L87 Difference]: Start difference. First operand 1117 states and 1431 transitions. Second operand has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 20:40:17,923 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 20:40:17,923 INFO L93 Difference]: Finished difference Result 1464 states and 1849 transitions. [2023-11-23 20:40:17,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-23 20:40:17,924 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2023-11-23 20:40:17,924 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 20:40:17,932 INFO L225 Difference]: With dead ends: 1464 [2023-11-23 20:40:17,932 INFO L226 Difference]: Without dead ends: 1464 [2023-11-23 20:40:17,932 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-23 20:40:17,933 INFO L413 NwaCegarLoop]: 825 mSDtfsCounter, 348 mSDsluCounter, 1601 mSDsCounter, 0 mSdLazyCounter, 427 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 353 SdHoareTripleChecker+Valid, 2426 SdHoareTripleChecker+Invalid, 428 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 427 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2023-11-23 20:40:17,934 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [353 Valid, 2426 Invalid, 428 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 427 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2023-11-23 20:40:17,937 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1464 states. [2023-11-23 20:40:17,960 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1464 to 1116. [2023-11-23 20:40:17,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1116 states, 658 states have (on average 2.1443768996960486) internal successors, (1411), 1109 states have internal predecessors, (1411), 10 states have call successors, (10), 3 states have call predecessors, (10), 2 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) [2023-11-23 20:40:17,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1116 states to 1116 states and 1429 transitions. [2023-11-23 20:40:17,967 INFO L78 Accepts]: Start accepts. Automaton has 1116 states and 1429 transitions. Word has length 11 [2023-11-23 20:40:17,967 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 20:40:17,967 INFO L495 AbstractCegarLoop]: Abstraction has 1116 states and 1429 transitions. [2023-11-23 20:40:17,968 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 20:40:17,968 INFO L276 IsEmpty]: Start isEmpty. Operand 1116 states and 1429 transitions. [2023-11-23 20:40:17,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2023-11-23 20:40:17,968 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 20:40:17,969 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 20:40:17,973 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2158525a-1afe-4598-87e5-25fcb9ee0aa3/bin/utaipan-verify-mE87zJ7Ire/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2023-11-23 20:40:18,173 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2158525a-1afe-4598-87e5-25fcb9ee0aa3/bin/utaipan-verify-mE87zJ7Ire/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-23 20:40:18,173 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr15REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 530 more)] === [2023-11-23 20:40:18,174 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 20:40:18,174 INFO L85 PathProgramCache]: Analyzing trace with hash 661679463, now seen corresponding path program 1 times [2023-11-23 20:40:18,174 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-23 20:40:18,174 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1961173788] [2023-11-23 20:40:18,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 20:40:18,175 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-23 20:40:18,175 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2158525a-1afe-4598-87e5-25fcb9ee0aa3/bin/utaipan-verify-mE87zJ7Ire/mathsat [2023-11-23 20:40:18,176 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2158525a-1afe-4598-87e5-25fcb9ee0aa3/bin/utaipan-verify-mE87zJ7Ire/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-23 20:40:18,178 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2158525a-1afe-4598-87e5-25fcb9ee0aa3/bin/utaipan-verify-mE87zJ7Ire/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2023-11-23 20:40:18,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 20:40:18,406 INFO L262 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-23 20:40:18,409 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 20:40:18,418 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 20:40:18,418 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 20:40:18,419 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-23 20:40:18,419 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1961173788] [2023-11-23 20:40:18,419 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1961173788] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 20:40:18,419 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 20:40:18,419 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-23 20:40:18,419 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [492109294] [2023-11-23 20:40:18,419 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 20:40:18,420 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 20:40:18,420 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-23 20:40:18,420 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 20:40:18,420 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 20:40:18,420 INFO L87 Difference]: Start difference. First operand 1116 states and 1429 transitions. Second operand has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 20:40:19,351 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 20:40:19,351 INFO L93 Difference]: Finished difference Result 1062 states and 1349 transitions. [2023-11-23 20:40:19,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 20:40:19,353 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 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 15 [2023-11-23 20:40:19,353 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 20:40:19,359 INFO L225 Difference]: With dead ends: 1062 [2023-11-23 20:40:19,359 INFO L226 Difference]: Without dead ends: 1062 [2023-11-23 20:40:19,360 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 20:40:19,361 INFO L413 NwaCegarLoop]: 797 mSDtfsCounter, 70 mSDsluCounter, 748 mSDsCounter, 0 mSdLazyCounter, 206 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 70 SdHoareTripleChecker+Valid, 1545 SdHoareTripleChecker+Invalid, 206 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 206 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-11-23 20:40:19,362 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [70 Valid, 1545 Invalid, 206 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 206 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-11-23 20:40:19,368 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1062 states. [2023-11-23 20:40:19,387 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1062 to 1062. [2023-11-23 20:40:19,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1062 states, 628 states have (on average 2.1194267515923566) internal successors, (1331), 1055 states have internal predecessors, (1331), 10 states have call successors, (10), 3 states have call predecessors, (10), 2 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) [2023-11-23 20:40:19,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1062 states to 1062 states and 1349 transitions. [2023-11-23 20:40:19,397 INFO L78 Accepts]: Start accepts. Automaton has 1062 states and 1349 transitions. Word has length 15 [2023-11-23 20:40:19,397 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 20:40:19,397 INFO L495 AbstractCegarLoop]: Abstraction has 1062 states and 1349 transitions. [2023-11-23 20:40:19,397 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 20:40:19,398 INFO L276 IsEmpty]: Start isEmpty. Operand 1062 states and 1349 transitions. [2023-11-23 20:40:19,398 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2023-11-23 20:40:19,399 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 20:40:19,399 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 20:40:19,410 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2158525a-1afe-4598-87e5-25fcb9ee0aa3/bin/utaipan-verify-mE87zJ7Ire/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2023-11-23 20:40:19,602 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2158525a-1afe-4598-87e5-25fcb9ee0aa3/bin/utaipan-verify-mE87zJ7Ire/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-23 20:40:19,603 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr38REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 530 more)] === [2023-11-23 20:40:19,603 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 20:40:19,603 INFO L85 PathProgramCache]: Analyzing trace with hash 218799840, now seen corresponding path program 1 times [2023-11-23 20:40:19,604 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-23 20:40:19,604 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1075153104] [2023-11-23 20:40:19,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 20:40:19,604 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-23 20:40:19,604 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2158525a-1afe-4598-87e5-25fcb9ee0aa3/bin/utaipan-verify-mE87zJ7Ire/mathsat [2023-11-23 20:40:19,605 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2158525a-1afe-4598-87e5-25fcb9ee0aa3/bin/utaipan-verify-mE87zJ7Ire/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-23 20:40:19,606 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2158525a-1afe-4598-87e5-25fcb9ee0aa3/bin/utaipan-verify-mE87zJ7Ire/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2023-11-23 20:40:19,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 20:40:19,804 INFO L262 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-23 20:40:19,806 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 20:40:19,839 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 20:40:19,839 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 20:40:19,839 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-23 20:40:19,839 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1075153104] [2023-11-23 20:40:19,840 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1075153104] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 20:40:19,840 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 20:40:19,840 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-23 20:40:19,840 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [610259206] [2023-11-23 20:40:19,840 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 20:40:19,841 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-23 20:40:19,842 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-23 20:40:19,842 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-23 20:40:19,842 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-23 20:40:19,843 INFO L87 Difference]: Start difference. First operand 1062 states and 1349 transitions. Second operand has 4 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 20:40:21,140 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 20:40:21,140 INFO L93 Difference]: Finished difference Result 1048 states and 1307 transitions. [2023-11-23 20:40:21,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-23 20:40:21,142 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 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 17 [2023-11-23 20:40:21,142 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 20:40:21,147 INFO L225 Difference]: With dead ends: 1048 [2023-11-23 20:40:21,147 INFO L226 Difference]: Without dead ends: 1048 [2023-11-23 20:40:21,148 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-23 20:40:21,148 INFO L413 NwaCegarLoop]: 766 mSDtfsCounter, 58 mSDsluCounter, 1508 mSDsCounter, 0 mSdLazyCounter, 314 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 2274 SdHoareTripleChecker+Invalid, 336 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 314 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-11-23 20:40:21,149 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [58 Valid, 2274 Invalid, 336 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 314 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-11-23 20:40:21,151 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1048 states. [2023-11-23 20:40:21,169 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1048 to 1046. [2023-11-23 20:40:21,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1046 states, 626 states have (on average 2.0559105431309903) internal successors, (1287), 1039 states have internal predecessors, (1287), 10 states have call successors, (10), 3 states have call predecessors, (10), 2 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) [2023-11-23 20:40:21,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1046 states to 1046 states and 1305 transitions. [2023-11-23 20:40:21,175 INFO L78 Accepts]: Start accepts. Automaton has 1046 states and 1305 transitions. Word has length 17 [2023-11-23 20:40:21,175 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 20:40:21,176 INFO L495 AbstractCegarLoop]: Abstraction has 1046 states and 1305 transitions. [2023-11-23 20:40:21,176 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 20:40:21,176 INFO L276 IsEmpty]: Start isEmpty. Operand 1046 states and 1305 transitions. [2023-11-23 20:40:21,177 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2023-11-23 20:40:21,177 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 20:40:21,177 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] [2023-11-23 20:40:21,189 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2158525a-1afe-4598-87e5-25fcb9ee0aa3/bin/utaipan-verify-mE87zJ7Ire/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2023-11-23 20:40:21,381 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2158525a-1afe-4598-87e5-25fcb9ee0aa3/bin/utaipan-verify-mE87zJ7Ire/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-23 20:40:21,381 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr52REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 530 more)] === [2023-11-23 20:40:21,382 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 20:40:21,382 INFO L85 PathProgramCache]: Analyzing trace with hash -195365074, now seen corresponding path program 1 times [2023-11-23 20:40:21,382 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-23 20:40:21,382 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [595035055] [2023-11-23 20:40:21,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 20:40:21,383 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-23 20:40:21,383 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2158525a-1afe-4598-87e5-25fcb9ee0aa3/bin/utaipan-verify-mE87zJ7Ire/mathsat [2023-11-23 20:40:21,384 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2158525a-1afe-4598-87e5-25fcb9ee0aa3/bin/utaipan-verify-mE87zJ7Ire/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-23 20:40:21,394 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2158525a-1afe-4598-87e5-25fcb9ee0aa3/bin/utaipan-verify-mE87zJ7Ire/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2023-11-23 20:40:21,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 20:40:21,599 INFO L262 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-23 20:40:21,602 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 20:40:21,611 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2023-11-23 20:40:21,738 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 20:40:21,739 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 20:40:21,739 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-23 20:40:21,739 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [595035055] [2023-11-23 20:40:21,739 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [595035055] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 20:40:21,739 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 20:40:21,739 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-23 20:40:21,740 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [898332305] [2023-11-23 20:40:21,740 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 20:40:21,740 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-23 20:40:21,740 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-23 20:40:21,741 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-23 20:40:21,741 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-23 20:40:21,741 INFO L87 Difference]: Start difference. First operand 1046 states and 1305 transitions. Second operand has 4 states, 3 states have (on average 10.333333333333334) internal successors, (31), 4 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 20:40:24,852 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 20:40:24,852 INFO L93 Difference]: Finished difference Result 1448 states and 1829 transitions. [2023-11-23 20:40:24,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-23 20:40:24,853 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 10.333333333333334) internal successors, (31), 4 states have internal predecessors, (31), 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 31 [2023-11-23 20:40:24,853 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 20:40:24,859 INFO L225 Difference]: With dead ends: 1448 [2023-11-23 20:40:24,859 INFO L226 Difference]: Without dead ends: 1448 [2023-11-23 20:40:24,860 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-23 20:40:24,860 INFO L413 NwaCegarLoop]: 428 mSDtfsCounter, 828 mSDsluCounter, 575 mSDsCounter, 0 mSdLazyCounter, 1162 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 836 SdHoareTripleChecker+Valid, 1003 SdHoareTripleChecker+Invalid, 1171 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 1162 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2023-11-23 20:40:24,861 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [836 Valid, 1003 Invalid, 1171 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 1162 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2023-11-23 20:40:24,863 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1448 states. [2023-11-23 20:40:24,882 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1448 to 1042. [2023-11-23 20:40:24,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1042 states, 626 states have (on average 2.0431309904153356) internal successors, (1279), 1035 states have internal predecessors, (1279), 10 states have call successors, (10), 3 states have call predecessors, (10), 2 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) [2023-11-23 20:40:24,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1042 states to 1042 states and 1297 transitions. [2023-11-23 20:40:24,889 INFO L78 Accepts]: Start accepts. Automaton has 1042 states and 1297 transitions. Word has length 31 [2023-11-23 20:40:24,889 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 20:40:24,889 INFO L495 AbstractCegarLoop]: Abstraction has 1042 states and 1297 transitions. [2023-11-23 20:40:24,889 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 10.333333333333334) internal successors, (31), 4 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 20:40:24,889 INFO L276 IsEmpty]: Start isEmpty. Operand 1042 states and 1297 transitions. [2023-11-23 20:40:24,890 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2023-11-23 20:40:24,890 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 20:40:24,891 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] [2023-11-23 20:40:24,900 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2158525a-1afe-4598-87e5-25fcb9ee0aa3/bin/utaipan-verify-mE87zJ7Ire/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2023-11-23 20:40:25,094 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2158525a-1afe-4598-87e5-25fcb9ee0aa3/bin/utaipan-verify-mE87zJ7Ire/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-23 20:40:25,095 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr53REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 530 more)] === [2023-11-23 20:40:25,095 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 20:40:25,095 INFO L85 PathProgramCache]: Analyzing trace with hash -195365073, now seen corresponding path program 1 times [2023-11-23 20:40:25,096 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-23 20:40:25,096 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [795786246] [2023-11-23 20:40:25,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 20:40:25,096 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-23 20:40:25,096 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2158525a-1afe-4598-87e5-25fcb9ee0aa3/bin/utaipan-verify-mE87zJ7Ire/mathsat [2023-11-23 20:40:25,097 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2158525a-1afe-4598-87e5-25fcb9ee0aa3/bin/utaipan-verify-mE87zJ7Ire/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-23 20:40:25,098 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2158525a-1afe-4598-87e5-25fcb9ee0aa3/bin/utaipan-verify-mE87zJ7Ire/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2023-11-23 20:40:25,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 20:40:25,285 INFO L262 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-23 20:40:25,289 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 20:40:25,297 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-11-23 20:40:25,532 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 20:40:25,532 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 20:40:25,532 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-23 20:40:25,532 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [795786246] [2023-11-23 20:40:25,532 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [795786246] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 20:40:25,533 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 20:40:25,533 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-23 20:40:25,533 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1046579299] [2023-11-23 20:40:25,533 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 20:40:25,533 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-23 20:40:25,534 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-23 20:40:25,534 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-23 20:40:25,534 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-23 20:40:25,534 INFO L87 Difference]: Start difference. First operand 1042 states and 1297 transitions. Second operand has 4 states, 3 states have (on average 10.333333333333334) internal successors, (31), 4 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 20:40:30,232 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 20:40:30,232 INFO L93 Difference]: Finished difference Result 1566 states and 1972 transitions. [2023-11-23 20:40:30,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-23 20:40:30,234 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 10.333333333333334) internal successors, (31), 4 states have internal predecessors, (31), 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 31 [2023-11-23 20:40:30,234 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 20:40:30,241 INFO L225 Difference]: With dead ends: 1566 [2023-11-23 20:40:30,241 INFO L226 Difference]: Without dead ends: 1566 [2023-11-23 20:40:30,241 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-23 20:40:30,242 INFO L413 NwaCegarLoop]: 988 mSDtfsCounter, 548 mSDsluCounter, 988 mSDsCounter, 0 mSdLazyCounter, 1441 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 548 SdHoareTripleChecker+Valid, 1976 SdHoareTripleChecker+Invalid, 1444 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 1441 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.6s IncrementalHoareTripleChecker+Time [2023-11-23 20:40:30,242 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [548 Valid, 1976 Invalid, 1444 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 1441 Invalid, 0 Unknown, 0 Unchecked, 4.6s Time] [2023-11-23 20:40:30,246 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1566 states. [2023-11-23 20:40:30,265 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1566 to 1038. [2023-11-23 20:40:30,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1038 states, 626 states have (on average 2.0303514376996805) internal successors, (1271), 1031 states have internal predecessors, (1271), 10 states have call successors, (10), 3 states have call predecessors, (10), 2 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) [2023-11-23 20:40:30,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1038 states to 1038 states and 1289 transitions. [2023-11-23 20:40:30,284 INFO L78 Accepts]: Start accepts. Automaton has 1038 states and 1289 transitions. Word has length 31 [2023-11-23 20:40:30,286 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 20:40:30,287 INFO L495 AbstractCegarLoop]: Abstraction has 1038 states and 1289 transitions. [2023-11-23 20:40:30,287 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 10.333333333333334) internal successors, (31), 4 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 20:40:30,287 INFO L276 IsEmpty]: Start isEmpty. Operand 1038 states and 1289 transitions. [2023-11-23 20:40:30,293 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2023-11-23 20:40:30,293 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 20:40:30,294 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 20:40:30,298 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2158525a-1afe-4598-87e5-25fcb9ee0aa3/bin/utaipan-verify-mE87zJ7Ire/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2023-11-23 20:40:30,498 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2158525a-1afe-4598-87e5-25fcb9ee0aa3/bin/utaipan-verify-mE87zJ7Ire/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-23 20:40:30,498 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr71REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 530 more)] === [2023-11-23 20:40:30,498 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 20:40:30,499 INFO L85 PathProgramCache]: Analyzing trace with hash 1055920008, now seen corresponding path program 1 times [2023-11-23 20:40:30,499 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-23 20:40:30,500 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [502865501] [2023-11-23 20:40:30,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 20:40:30,500 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-23 20:40:30,500 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2158525a-1afe-4598-87e5-25fcb9ee0aa3/bin/utaipan-verify-mE87zJ7Ire/mathsat [2023-11-23 20:40:30,501 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2158525a-1afe-4598-87e5-25fcb9ee0aa3/bin/utaipan-verify-mE87zJ7Ire/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-23 20:40:30,542 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2158525a-1afe-4598-87e5-25fcb9ee0aa3/bin/utaipan-verify-mE87zJ7Ire/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2023-11-23 20:40:30,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 20:40:30,760 INFO L262 TraceCheckSpWp]: Trace formula consists of 253 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-23 20:40:30,765 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 20:40:30,819 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 20:40:30,819 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 20:40:30,820 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-23 20:40:30,820 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [502865501] [2023-11-23 20:40:30,820 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [502865501] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 20:40:30,820 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 20:40:30,820 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-23 20:40:30,820 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [98805398] [2023-11-23 20:40:30,820 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 20:40:30,821 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-23 20:40:30,821 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-23 20:40:30,821 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-23 20:40:30,821 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-23 20:40:30,822 INFO L87 Difference]: Start difference. First operand 1038 states and 1289 transitions. Second operand has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 20:40:31,974 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 20:40:31,975 INFO L93 Difference]: Finished difference Result 1026 states and 1269 transitions. [2023-11-23 20:40:31,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-23 20:40:31,976 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 50 [2023-11-23 20:40:31,977 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 20:40:31,982 INFO L225 Difference]: With dead ends: 1026 [2023-11-23 20:40:31,982 INFO L226 Difference]: Without dead ends: 1026 [2023-11-23 20:40:31,982 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-23 20:40:31,983 INFO L413 NwaCegarLoop]: 760 mSDtfsCounter, 23 mSDsluCounter, 1500 mSDsCounter, 0 mSdLazyCounter, 310 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 2260 SdHoareTripleChecker+Invalid, 316 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 310 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-11-23 20:40:31,983 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 2260 Invalid, 316 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 310 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-11-23 20:40:31,985 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1026 states. [2023-11-23 20:40:31,999 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1026 to 1026. [2023-11-23 20:40:32,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1026 states, 614 states have (on average 2.037459283387622) internal successors, (1251), 1019 states have internal predecessors, (1251), 10 states have call successors, (10), 3 states have call predecessors, (10), 2 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) [2023-11-23 20:40:32,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1026 states to 1026 states and 1269 transitions. [2023-11-23 20:40:32,004 INFO L78 Accepts]: Start accepts. Automaton has 1026 states and 1269 transitions. Word has length 50 [2023-11-23 20:40:32,005 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 20:40:32,005 INFO L495 AbstractCegarLoop]: Abstraction has 1026 states and 1269 transitions. [2023-11-23 20:40:32,005 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 20:40:32,005 INFO L276 IsEmpty]: Start isEmpty. Operand 1026 states and 1269 transitions. [2023-11-23 20:40:32,006 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2023-11-23 20:40:32,006 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 20:40:32,006 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] [2023-11-23 20:40:32,016 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2158525a-1afe-4598-87e5-25fcb9ee0aa3/bin/utaipan-verify-mE87zJ7Ire/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0