./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test5-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version cf1a7837 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c608ec5-24c4-4bd6-93e7-4018f22dc20d/bin/utaipan-verify-NcY6lQBIFX/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c608ec5-24c4-4bd6-93e7-4018f22dc20d/bin/utaipan-verify-NcY6lQBIFX/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c608ec5-24c4-4bd6-93e7-4018f22dc20d/bin/utaipan-verify-NcY6lQBIFX/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c608ec5-24c4-4bd6-93e7-4018f22dc20d/bin/utaipan-verify-NcY6lQBIFX/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test5-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c608ec5-24c4-4bd6-93e7-4018f22dc20d/bin/utaipan-verify-NcY6lQBIFX/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c608ec5-24c4-4bd6-93e7-4018f22dc20d/bin/utaipan-verify-NcY6lQBIFX --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash adfc1710e761824cc0d761ee45a1724b8fd34135f47dcc82b27f8b64b97ca013 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-cf1a783 [2023-11-12 00:11:03,456 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-12 00:11:03,588 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c608ec5-24c4-4bd6-93e7-4018f22dc20d/bin/utaipan-verify-NcY6lQBIFX/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2023-11-12 00:11:03,600 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-12 00:11:03,601 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-12 00:11:03,643 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-12 00:11:03,644 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-12 00:11:03,645 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-12 00:11:03,646 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-12 00:11:03,652 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-12 00:11:03,652 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-12 00:11:03,653 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-12 00:11:03,653 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-12 00:11:03,655 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-12 00:11:03,656 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-12 00:11:03,656 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-12 00:11:03,657 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-12 00:11:03,657 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-12 00:11:03,657 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-12 00:11:03,658 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-12 00:11:03,658 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-12 00:11:03,659 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-12 00:11:03,660 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-12 00:11:03,660 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-12 00:11:03,661 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-12 00:11:03,662 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-12 00:11:03,662 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-12 00:11:03,663 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-12 00:11:03,663 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-12 00:11:03,663 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-12 00:11:03,665 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-12 00:11:03,665 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-12 00:11:03,665 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-12 00:11:03,666 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-12 00:11:03,666 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-12 00:11:03,666 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-12 00:11:03,666 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-12 00:11:03,667 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-12 00:11:03,667 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-12 00:11:03,667 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 00:11:03,667 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-12 00:11:03,668 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-12 00:11:03,668 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-12 00:11:03,668 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-12 00:11:03,669 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-12 00:11:03,669 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-12 00:11:03,669 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_1c608ec5-24c4-4bd6-93e7-4018f22dc20d/bin/utaipan-verify-NcY6lQBIFX/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c608ec5-24c4-4bd6-93e7-4018f22dc20d/bin/utaipan-verify-NcY6lQBIFX Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> adfc1710e761824cc0d761ee45a1724b8fd34135f47dcc82b27f8b64b97ca013 [2023-11-12 00:11:04,002 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-12 00:11:04,036 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-12 00:11:04,039 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-12 00:11:04,041 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-12 00:11:04,043 INFO L274 PluginConnector]: CDTParser initialized [2023-11-12 00:11:04,046 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c608ec5-24c4-4bd6-93e7-4018f22dc20d/bin/utaipan-verify-NcY6lQBIFX/../../sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test5-1.i [2023-11-12 00:11:07,282 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-12 00:11:07,709 INFO L384 CDTParser]: Found 1 translation units. [2023-11-12 00:11:07,710 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c608ec5-24c4-4bd6-93e7-4018f22dc20d/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test5-1.i [2023-11-12 00:11:07,741 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c608ec5-24c4-4bd6-93e7-4018f22dc20d/bin/utaipan-verify-NcY6lQBIFX/data/cd76516cb/2486b9fff7e04974b4e10ec62e32ef52/FLAG864bdb0f9 [2023-11-12 00:11:07,755 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c608ec5-24c4-4bd6-93e7-4018f22dc20d/bin/utaipan-verify-NcY6lQBIFX/data/cd76516cb/2486b9fff7e04974b4e10ec62e32ef52 [2023-11-12 00:11:07,758 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-12 00:11:07,760 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-12 00:11:07,761 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-12 00:11:07,762 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-12 00:11:07,768 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-12 00:11:07,769 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 12:11:07" (1/1) ... [2023-11-12 00:11:07,770 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@43759705 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:11:07, skipping insertion in model container [2023-11-12 00:11:07,771 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 12:11:07" (1/1) ... [2023-11-12 00:11:07,863 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-12 00:11:08,674 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 00:11:08,687 ERROR L324 MainTranslator]: Unsupported Syntax: Found a cast between two array/pointer types of different sizes while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) [2023-11-12 00:11:08,688 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@6d36ad2b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:11:08, skipping insertion in model container [2023-11-12 00:11:08,694 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-12 00:11:08,694 INFO L186 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2023-11-12 00:11:08,697 INFO L158 Benchmark]: Toolchain (without parser) took 936.91ms. Allocated memory is still 163.6MB. Free memory was 117.4MB in the beginning and 95.1MB in the end (delta: 22.3MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. [2023-11-12 00:11:08,698 INFO L158 Benchmark]: CDTParser took 2.14ms. Allocated memory is still 113.2MB. Free memory is still 62.1MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-12 00:11:08,699 INFO L158 Benchmark]: CACSL2BoogieTranslator took 932.90ms. Allocated memory is still 163.6MB. Free memory was 117.0MB in the beginning and 95.1MB in the end (delta: 22.0MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2023-11-12 00:11:08,703 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 2.14ms. Allocated memory is still 113.2MB. Free memory is still 62.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 932.90ms. Allocated memory is still 163.6MB. Free memory was 117.0MB in the beginning and 95.1MB in the end (delta: 22.0MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 737]: Unsupported Syntax Found a cast between two array/pointer types of different sizes while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c608ec5-24c4-4bd6-93e7-4018f22dc20d/bin/utaipan-verify-NcY6lQBIFX/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c608ec5-24c4-4bd6-93e7-4018f22dc20d/bin/utaipan-verify-NcY6lQBIFX/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c608ec5-24c4-4bd6-93e7-4018f22dc20d/bin/utaipan-verify-NcY6lQBIFX/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c608ec5-24c4-4bd6-93e7-4018f22dc20d/bin/utaipan-verify-NcY6lQBIFX/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test5-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c608ec5-24c4-4bd6-93e7-4018f22dc20d/bin/utaipan-verify-NcY6lQBIFX/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c608ec5-24c4-4bd6-93e7-4018f22dc20d/bin/utaipan-verify-NcY6lQBIFX --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash adfc1710e761824cc0d761ee45a1724b8fd34135f47dcc82b27f8b64b97ca013 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-cf1a783 [2023-11-12 00:11:11,245 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-12 00:11:11,363 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c608ec5-24c4-4bd6-93e7-4018f22dc20d/bin/utaipan-verify-NcY6lQBIFX/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf [2023-11-12 00:11:11,372 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-12 00:11:11,373 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-12 00:11:11,418 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-12 00:11:11,419 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-12 00:11:11,420 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-12 00:11:11,421 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-12 00:11:11,426 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-12 00:11:11,426 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-12 00:11:11,427 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-12 00:11:11,427 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-12 00:11:11,429 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-12 00:11:11,429 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-12 00:11:11,430 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-12 00:11:11,431 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-12 00:11:11,431 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-12 00:11:11,432 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-12 00:11:11,433 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-12 00:11:11,434 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-12 00:11:11,434 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-12 00:11:11,435 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-12 00:11:11,435 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-12 00:11:11,436 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-12 00:11:11,436 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-12 00:11:11,436 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-12 00:11:11,437 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-12 00:11:11,437 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-11-12 00:11:11,438 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-11-12 00:11:11,439 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-12 00:11:11,440 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-12 00:11:11,440 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-12 00:11:11,440 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-12 00:11:11,441 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-12 00:11:11,441 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-12 00:11:11,442 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 00:11:11,442 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-12 00:11:11,443 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-12 00:11:11,443 INFO L153 SettingsManager]: * Trace refinement strategy=WALRUS [2023-11-12 00:11:11,443 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-11-12 00:11:11,444 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-12 00:11:11,444 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-12 00:11:11,444 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_1c608ec5-24c4-4bd6-93e7-4018f22dc20d/bin/utaipan-verify-NcY6lQBIFX/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c608ec5-24c4-4bd6-93e7-4018f22dc20d/bin/utaipan-verify-NcY6lQBIFX Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> adfc1710e761824cc0d761ee45a1724b8fd34135f47dcc82b27f8b64b97ca013 [2023-11-12 00:11:11,877 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-12 00:11:11,898 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-12 00:11:11,901 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-12 00:11:11,903 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-12 00:11:11,903 INFO L274 PluginConnector]: CDTParser initialized [2023-11-12 00:11:11,905 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c608ec5-24c4-4bd6-93e7-4018f22dc20d/bin/utaipan-verify-NcY6lQBIFX/../../sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test5-1.i [2023-11-12 00:11:15,090 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-12 00:11:15,538 INFO L384 CDTParser]: Found 1 translation units. [2023-11-12 00:11:15,539 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c608ec5-24c4-4bd6-93e7-4018f22dc20d/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test5-1.i [2023-11-12 00:11:15,561 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c608ec5-24c4-4bd6-93e7-4018f22dc20d/bin/utaipan-verify-NcY6lQBIFX/data/f96e8f793/593c04df4bc2401090cba4d15e431d1e/FLAG27f95954f [2023-11-12 00:11:15,579 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c608ec5-24c4-4bd6-93e7-4018f22dc20d/bin/utaipan-verify-NcY6lQBIFX/data/f96e8f793/593c04df4bc2401090cba4d15e431d1e [2023-11-12 00:11:15,584 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-12 00:11:15,586 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-12 00:11:15,592 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-12 00:11:15,592 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-12 00:11:15,597 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-12 00:11:15,598 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 12:11:15" (1/1) ... [2023-11-12 00:11:15,600 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4dc4c7b4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:11:15, skipping insertion in model container [2023-11-12 00:11:15,600 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 12:11:15" (1/1) ... [2023-11-12 00:11:15,695 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-12 00:11:16,426 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 00:11:16,456 INFO L199 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2023-11-12 00:11:16,477 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-12 00:11:16,625 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 00:11:16,643 INFO L202 MainTranslator]: Completed pre-run [2023-11-12 00:11:16,781 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 00:11:16,839 WARN L672 CHandler]: The function memcmp is called, but not defined or handled by StandardFunctionHandler. [2023-11-12 00:11:16,845 INFO L206 MainTranslator]: Completed translation [2023-11-12 00:11:16,845 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:11:16 WrapperNode [2023-11-12 00:11:16,846 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-12 00:11:16,847 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-12 00:11:16,847 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-12 00:11:16,847 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-12 00:11:16,855 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:11:16" (1/1) ... [2023-11-12 00:11:16,904 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:11:16" (1/1) ... [2023-11-12 00:11:17,002 INFO L138 Inliner]: procedures = 180, calls = 390, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 1418 [2023-11-12 00:11:17,002 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-12 00:11:17,004 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-12 00:11:17,004 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-12 00:11:17,005 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-12 00:11:17,015 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:11:16" (1/1) ... [2023-11-12 00:11:17,015 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:11:16" (1/1) ... [2023-11-12 00:11:17,043 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:11:16" (1/1) ... [2023-11-12 00:11:17,055 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:11:16" (1/1) ... [2023-11-12 00:11:17,169 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:11:16" (1/1) ... [2023-11-12 00:11:17,182 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:11:16" (1/1) ... [2023-11-12 00:11:17,188 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:11:16" (1/1) ... [2023-11-12 00:11:17,212 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:11:16" (1/1) ... [2023-11-12 00:11:17,242 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-12 00:11:17,243 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-12 00:11:17,243 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-12 00:11:17,243 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-12 00:11:17,244 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:11:16" (1/1) ... [2023-11-12 00:11:17,260 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 00:11:17,275 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c608ec5-24c4-4bd6-93e7-4018f22dc20d/bin/utaipan-verify-NcY6lQBIFX/z3 [2023-11-12 00:11:17,289 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c608ec5-24c4-4bd6-93e7-4018f22dc20d/bin/utaipan-verify-NcY6lQBIFX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-12 00:11:17,335 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c608ec5-24c4-4bd6-93e7-4018f22dc20d/bin/utaipan-verify-NcY6lQBIFX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-12 00:11:17,345 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-11-12 00:11:17,346 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-11-12 00:11:17,346 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2023-11-12 00:11:17,346 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2023-11-12 00:11:17,346 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-11-12 00:11:17,346 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-11-12 00:11:17,346 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2023-11-12 00:11:17,347 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2023-11-12 00:11:17,348 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-12 00:11:17,349 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-12 00:11:17,349 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-12 00:11:17,349 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-12 00:11:17,349 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2023-11-12 00:11:17,349 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-12 00:11:17,349 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-12 00:11:17,349 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2023-11-12 00:11:17,349 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2023-11-12 00:11:17,350 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-12 00:11:17,350 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-12 00:11:17,619 INFO L236 CfgBuilder]: Building ICFG [2023-11-12 00:11:17,623 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-12 00:11:17,663 WARN L817 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2023-11-12 00:11:25,386 INFO L277 CfgBuilder]: Performing block encoding [2023-11-12 00:11:25,411 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-12 00:11:25,412 INFO L302 CfgBuilder]: Removed 83 assume(true) statements. [2023-11-12 00:11:25,417 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 12:11:25 BoogieIcfgContainer [2023-11-12 00:11:25,417 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-12 00:11:25,420 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-12 00:11:25,421 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-12 00:11:25,424 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-12 00:11:25,424 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 12:11:15" (1/3) ... [2023-11-12 00:11:25,425 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@53d3dfa9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 12:11:25, skipping insertion in model container [2023-11-12 00:11:25,425 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:11:16" (2/3) ... [2023-11-12 00:11:25,427 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@53d3dfa9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 12:11:25, skipping insertion in model container [2023-11-12 00:11:25,428 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 12:11:25" (3/3) ... [2023-11-12 00:11:25,429 INFO L112 eAbstractionObserver]: Analyzing ICFG uthash_SFH_test5-1.i [2023-11-12 00:11:25,450 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-12 00:11:25,451 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 728 error locations. [2023-11-12 00:11:25,536 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-12 00:11:25,542 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;@1d3d8ee1, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-12 00:11:25,542 INFO L358 AbstractCegarLoop]: Starting to check reachability of 728 error locations. [2023-11-12 00:11:25,551 INFO L276 IsEmpty]: Start isEmpty. Operand has 1468 states, 729 states have (on average 2.2181069958847734) internal successors, (1617), 1458 states have internal predecessors, (1617), 13 states have call successors, (13), 3 states have call predecessors, (13), 3 states have return successors, (13), 9 states have call predecessors, (13), 13 states have call successors, (13) [2023-11-12 00:11:25,557 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2023-11-12 00:11:25,557 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:11:25,558 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2023-11-12 00:11:25,558 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 725 more)] === [2023-11-12 00:11:25,564 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:11:25,564 INFO L85 PathProgramCache]: Analyzing trace with hash 45876316, now seen corresponding path program 1 times [2023-11-12 00:11:25,576 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-12 00:11:25,576 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1135617567] [2023-11-12 00:11:25,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:11:25,577 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-12 00:11:25,577 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c608ec5-24c4-4bd6-93e7-4018f22dc20d/bin/utaipan-verify-NcY6lQBIFX/mathsat [2023-11-12 00:11:25,578 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c608ec5-24c4-4bd6-93e7-4018f22dc20d/bin/utaipan-verify-NcY6lQBIFX/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-12 00:11:25,589 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c608ec5-24c4-4bd6-93e7-4018f22dc20d/bin/utaipan-verify-NcY6lQBIFX/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2023-11-12 00:11:25,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:11:25,784 INFO L262 TraceCheckSpWp]: Trace formula consists of 37 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-12 00:11:25,791 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 00:11:25,862 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2023-11-12 00:11:25,878 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 00:11:25,879 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-12 00:11:25,880 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-12 00:11:25,880 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1135617567] [2023-11-12 00:11:25,881 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1135617567] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:11:25,881 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 00:11:25,881 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-12 00:11:25,883 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1068309025] [2023-11-12 00:11:25,884 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:11:25,889 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 00:11:25,889 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-12 00:11:25,919 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 00:11:25,920 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 00:11:25,925 INFO L87 Difference]: Start difference. First operand has 1468 states, 729 states have (on average 2.2181069958847734) internal successors, (1617), 1458 states have internal predecessors, (1617), 13 states have call successors, (13), 3 states have call predecessors, (13), 3 states have return successors, (13), 9 states have call predecessors, (13), 13 states have call successors, (13) Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:11:29,518 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:11:29,519 INFO L93 Difference]: Finished difference Result 1713 states and 1839 transitions. [2023-11-12 00:11:29,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 00:11:29,521 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2023-11-12 00:11:29,521 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:11:29,546 INFO L225 Difference]: With dead ends: 1713 [2023-11-12 00:11:29,547 INFO L226 Difference]: Without dead ends: 1711 [2023-11-12 00:11:29,548 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 00:11:29,552 INFO L413 NwaCegarLoop]: 970 mSDtfsCounter, 1375 mSDsluCounter, 277 mSDsCounter, 0 mSdLazyCounter, 883 mSolverCounterSat, 102 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1386 SdHoareTripleChecker+Valid, 1247 SdHoareTripleChecker+Invalid, 985 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 102 IncrementalHoareTripleChecker+Valid, 883 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2023-11-12 00:11:29,553 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1386 Valid, 1247 Invalid, 985 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [102 Valid, 883 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time] [2023-11-12 00:11:29,597 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1711 states. [2023-11-12 00:11:29,690 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1711 to 1435. [2023-11-12 00:11:29,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1435 states, 799 states have (on average 1.9424280350438048) internal successors, (1552), 1425 states have internal predecessors, (1552), 13 states have call successors, (13), 3 states have call predecessors, (13), 2 states have return successors, (11), 7 states have call predecessors, (11), 11 states have call successors, (11) [2023-11-12 00:11:29,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1435 states to 1435 states and 1576 transitions. [2023-11-12 00:11:29,705 INFO L78 Accepts]: Start accepts. Automaton has 1435 states and 1576 transitions. Word has length 5 [2023-11-12 00:11:29,705 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:11:29,705 INFO L495 AbstractCegarLoop]: Abstraction has 1435 states and 1576 transitions. [2023-11-12 00:11:29,705 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:11:29,705 INFO L276 IsEmpty]: Start isEmpty. Operand 1435 states and 1576 transitions. [2023-11-12 00:11:29,706 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2023-11-12 00:11:29,706 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:11:29,706 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2023-11-12 00:11:29,725 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c608ec5-24c4-4bd6-93e7-4018f22dc20d/bin/utaipan-verify-NcY6lQBIFX/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2023-11-12 00:11:29,923 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c608ec5-24c4-4bd6-93e7-4018f22dc20d/bin/utaipan-verify-NcY6lQBIFX/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-12 00:11:29,924 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 725 more)] === [2023-11-12 00:11:29,925 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:11:29,925 INFO L85 PathProgramCache]: Analyzing trace with hash 45876317, now seen corresponding path program 1 times [2023-11-12 00:11:29,926 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-12 00:11:29,926 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1641144265] [2023-11-12 00:11:29,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:11:29,927 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-12 00:11:29,927 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c608ec5-24c4-4bd6-93e7-4018f22dc20d/bin/utaipan-verify-NcY6lQBIFX/mathsat [2023-11-12 00:11:29,928 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c608ec5-24c4-4bd6-93e7-4018f22dc20d/bin/utaipan-verify-NcY6lQBIFX/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-12 00:11:29,936 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c608ec5-24c4-4bd6-93e7-4018f22dc20d/bin/utaipan-verify-NcY6lQBIFX/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2023-11-12 00:11:30,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:11:30,077 INFO L262 TraceCheckSpWp]: Trace formula consists of 37 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-12 00:11:30,080 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 00:11:30,094 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-11-12 00:11:30,126 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 00:11:30,127 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-12 00:11:30,127 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-12 00:11:30,132 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1641144265] [2023-11-12 00:11:30,133 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1641144265] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:11:30,134 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 00:11:30,135 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-12 00:11:30,135 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2141625227] [2023-11-12 00:11:30,135 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:11:30,137 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 00:11:30,137 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-12 00:11:30,138 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 00:11:30,138 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 00:11:30,138 INFO L87 Difference]: Start difference. First operand 1435 states and 1576 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:11:35,104 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:11:35,105 INFO L93 Difference]: Finished difference Result 1966 states and 2157 transitions. [2023-11-12 00:11:35,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 00:11:35,105 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2023-11-12 00:11:35,106 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:11:35,117 INFO L225 Difference]: With dead ends: 1966 [2023-11-12 00:11:35,117 INFO L226 Difference]: Without dead ends: 1966 [2023-11-12 00:11:35,118 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 00:11:35,119 INFO L413 NwaCegarLoop]: 1362 mSDtfsCounter, 753 mSDsluCounter, 613 mSDsCounter, 0 mSdLazyCounter, 959 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 758 SdHoareTripleChecker+Valid, 1975 SdHoareTripleChecker+Invalid, 982 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 959 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.9s IncrementalHoareTripleChecker+Time [2023-11-12 00:11:35,119 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [758 Valid, 1975 Invalid, 982 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 959 Invalid, 0 Unknown, 0 Unchecked, 4.9s Time] [2023-11-12 00:11:35,125 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1966 states. [2023-11-12 00:11:35,159 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1966 to 1595. [2023-11-12 00:11:35,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1595 states, 969 states have (on average 1.9215686274509804) internal successors, (1862), 1585 states have internal predecessors, (1862), 13 states have call successors, (13), 3 states have call predecessors, (13), 2 states have return successors, (11), 7 states have call predecessors, (11), 11 states have call successors, (11) [2023-11-12 00:11:35,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1595 states to 1595 states and 1886 transitions. [2023-11-12 00:11:35,171 INFO L78 Accepts]: Start accepts. Automaton has 1595 states and 1886 transitions. Word has length 5 [2023-11-12 00:11:35,171 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:11:35,172 INFO L495 AbstractCegarLoop]: Abstraction has 1595 states and 1886 transitions. [2023-11-12 00:11:35,172 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:11:35,172 INFO L276 IsEmpty]: Start isEmpty. Operand 1595 states and 1886 transitions. [2023-11-12 00:11:35,172 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2023-11-12 00:11:35,173 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:11:35,173 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2023-11-12 00:11:35,189 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c608ec5-24c4-4bd6-93e7-4018f22dc20d/bin/utaipan-verify-NcY6lQBIFX/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Ended with exit code 0 [2023-11-12 00:11:35,384 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c608ec5-24c4-4bd6-93e7-4018f22dc20d/bin/utaipan-verify-NcY6lQBIFX/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-12 00:11:35,385 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr640REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 725 more)] === [2023-11-12 00:11:35,385 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:11:35,385 INFO L85 PathProgramCache]: Analyzing trace with hash 1423857071, now seen corresponding path program 1 times [2023-11-12 00:11:35,386 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-12 00:11:35,386 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [986796028] [2023-11-12 00:11:35,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:11:35,386 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-12 00:11:35,386 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c608ec5-24c4-4bd6-93e7-4018f22dc20d/bin/utaipan-verify-NcY6lQBIFX/mathsat [2023-11-12 00:11:35,387 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c608ec5-24c4-4bd6-93e7-4018f22dc20d/bin/utaipan-verify-NcY6lQBIFX/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-12 00:11:35,390 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c608ec5-24c4-4bd6-93e7-4018f22dc20d/bin/utaipan-verify-NcY6lQBIFX/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2023-11-12 00:11:35,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:11:35,551 INFO L262 TraceCheckSpWp]: Trace formula consists of 30 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-12 00:11:35,553 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 00:11:35,562 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 00:11:35,563 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-12 00:11:35,563 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-12 00:11:35,563 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [986796028] [2023-11-12 00:11:35,564 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [986796028] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:11:35,564 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 00:11:35,564 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-12 00:11:35,564 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1078613116] [2023-11-12 00:11:35,564 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:11:35,565 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 00:11:35,566 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-12 00:11:35,566 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 00:11:35,566 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 00:11:35,567 INFO L87 Difference]: Start difference. First operand 1595 states and 1886 transitions. Second operand has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:11:35,757 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:11:35,758 INFO L93 Difference]: Finished difference Result 3171 states and 3753 transitions. [2023-11-12 00:11:35,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 00:11:35,762 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2023-11-12 00:11:35,762 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:11:35,780 INFO L225 Difference]: With dead ends: 3171 [2023-11-12 00:11:35,780 INFO L226 Difference]: Without dead ends: 3171 [2023-11-12 00:11:35,781 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 00:11:35,784 INFO L413 NwaCegarLoop]: 1698 mSDtfsCounter, 1383 mSDsluCounter, 1417 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1394 SdHoareTripleChecker+Valid, 3115 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-12 00:11:35,786 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1394 Valid, 3115 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-12 00:11:35,793 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3171 states. [2023-11-12 00:11:35,870 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3171 to 1597. [2023-11-12 00:11:35,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1597 states, 971 states have (on average 1.9196704428424305) internal successors, (1864), 1587 states have internal predecessors, (1864), 13 states have call successors, (13), 3 states have call predecessors, (13), 2 states have return successors, (11), 7 states have call predecessors, (11), 11 states have call successors, (11) [2023-11-12 00:11:35,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1597 states to 1597 states and 1888 transitions. [2023-11-12 00:11:35,883 INFO L78 Accepts]: Start accepts. Automaton has 1597 states and 1888 transitions. Word has length 6 [2023-11-12 00:11:35,883 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:11:35,884 INFO L495 AbstractCegarLoop]: Abstraction has 1597 states and 1888 transitions. [2023-11-12 00:11:35,884 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:11:35,884 INFO L276 IsEmpty]: Start isEmpty. Operand 1597 states and 1888 transitions. [2023-11-12 00:11:35,885 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2023-11-12 00:11:35,885 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:11:35,885 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 00:11:35,898 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c608ec5-24c4-4bd6-93e7-4018f22dc20d/bin/utaipan-verify-NcY6lQBIFX/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Ended with exit code 0 [2023-11-12 00:11:36,098 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c608ec5-24c4-4bd6-93e7-4018f22dc20d/bin/utaipan-verify-NcY6lQBIFX/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-12 00:11:36,098 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 725 more)] === [2023-11-12 00:11:36,099 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:11:36,099 INFO L85 PathProgramCache]: Analyzing trace with hash -1344610650, now seen corresponding path program 1 times [2023-11-12 00:11:36,099 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-12 00:11:36,100 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [672350979] [2023-11-12 00:11:36,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:11:36,100 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-12 00:11:36,100 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c608ec5-24c4-4bd6-93e7-4018f22dc20d/bin/utaipan-verify-NcY6lQBIFX/mathsat [2023-11-12 00:11:36,101 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c608ec5-24c4-4bd6-93e7-4018f22dc20d/bin/utaipan-verify-NcY6lQBIFX/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-12 00:11:36,108 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c608ec5-24c4-4bd6-93e7-4018f22dc20d/bin/utaipan-verify-NcY6lQBIFX/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2023-11-12 00:11:36,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:11:36,300 INFO L262 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-12 00:11:36,302 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 00:11:36,313 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 00:11:36,313 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-12 00:11:36,313 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-12 00:11:36,314 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [672350979] [2023-11-12 00:11:36,319 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [672350979] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:11:36,319 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 00:11:36,319 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-12 00:11:36,319 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [923652590] [2023-11-12 00:11:36,321 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:11:36,321 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 00:11:36,322 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-12 00:11:36,322 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 00:11:36,322 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 00:11:36,322 INFO L87 Difference]: Start difference. First operand 1597 states and 1888 transitions. Second operand has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:11:36,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:11:36,379 INFO L93 Difference]: Finished difference Result 1555 states and 1845 transitions. [2023-11-12 00:11:36,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 00:11:36,385 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2023-11-12 00:11:36,385 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:11:36,395 INFO L225 Difference]: With dead ends: 1555 [2023-11-12 00:11:36,395 INFO L226 Difference]: Without dead ends: 1555 [2023-11-12 00:11:36,396 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 00:11:36,398 INFO L413 NwaCegarLoop]: 1372 mSDtfsCounter, 81 mSDsluCounter, 1300 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 81 SdHoareTripleChecker+Valid, 2672 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-12 00:11:36,401 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [81 Valid, 2672 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-12 00:11:36,406 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1555 states. [2023-11-12 00:11:36,435 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1555 to 1555. [2023-11-12 00:11:36,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1555 states, 953 states have (on average 1.9108079748163693) internal successors, (1821), 1545 states have internal predecessors, (1821), 13 states have call successors, (13), 3 states have call predecessors, (13), 2 states have return successors, (11), 7 states have call predecessors, (11), 11 states have call successors, (11) [2023-11-12 00:11:36,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1555 states to 1555 states and 1845 transitions. [2023-11-12 00:11:36,446 INFO L78 Accepts]: Start accepts. Automaton has 1555 states and 1845 transitions. Word has length 11 [2023-11-12 00:11:36,446 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:11:36,447 INFO L495 AbstractCegarLoop]: Abstraction has 1555 states and 1845 transitions. [2023-11-12 00:11:36,447 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:11:36,447 INFO L276 IsEmpty]: Start isEmpty. Operand 1555 states and 1845 transitions. [2023-11-12 00:11:36,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2023-11-12 00:11:36,448 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:11:36,448 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 00:11:36,465 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c608ec5-24c4-4bd6-93e7-4018f22dc20d/bin/utaipan-verify-NcY6lQBIFX/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2023-11-12 00:11:36,660 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c608ec5-24c4-4bd6-93e7-4018f22dc20d/bin/utaipan-verify-NcY6lQBIFX/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-12 00:11:36,660 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr28REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 725 more)] === [2023-11-12 00:11:36,661 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:11:36,661 INFO L85 PathProgramCache]: Analyzing trace with hash 614317568, now seen corresponding path program 1 times [2023-11-12 00:11:36,661 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-12 00:11:36,661 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [751682578] [2023-11-12 00:11:36,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:11:36,662 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-12 00:11:36,662 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c608ec5-24c4-4bd6-93e7-4018f22dc20d/bin/utaipan-verify-NcY6lQBIFX/mathsat [2023-11-12 00:11:36,663 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c608ec5-24c4-4bd6-93e7-4018f22dc20d/bin/utaipan-verify-NcY6lQBIFX/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-12 00:11:36,664 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c608ec5-24c4-4bd6-93e7-4018f22dc20d/bin/utaipan-verify-NcY6lQBIFX/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2023-11-12 00:11:36,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:11:36,858 INFO L262 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-12 00:11:36,861 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 00:11:36,882 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 00:11:36,883 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-12 00:11:36,883 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-12 00:11:36,883 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [751682578] [2023-11-12 00:11:36,883 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [751682578] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:11:36,883 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 00:11:36,884 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-12 00:11:36,884 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [487379869] [2023-11-12 00:11:36,884 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:11:36,884 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-12 00:11:36,885 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-12 00:11:36,885 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-12 00:11:36,885 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-12 00:11:36,886 INFO L87 Difference]: Start difference. First operand 1555 states and 1845 transitions. Second operand has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:11:37,003 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:11:37,004 INFO L93 Difference]: Finished difference Result 1534 states and 1817 transitions. [2023-11-12 00:11:37,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-12 00:11:37,004 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2023-11-12 00:11:37,005 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:11:37,013 INFO L225 Difference]: With dead ends: 1534 [2023-11-12 00:11:37,013 INFO L226 Difference]: Without dead ends: 1534 [2023-11-12 00:11:37,014 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-12 00:11:37,014 INFO L413 NwaCegarLoop]: 1327 mSDtfsCounter, 62 mSDsluCounter, 2620 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 3947 SdHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-12 00:11:37,015 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [62 Valid, 3947 Invalid, 57 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-12 00:11:37,019 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1534 states. [2023-11-12 00:11:37,068 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1534 to 1533. [2023-11-12 00:11:37,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1533 states, 945 states have (on average 1.8962962962962964) internal successors, (1792), 1523 states have internal predecessors, (1792), 13 states have call successors, (13), 3 states have call predecessors, (13), 2 states have return successors, (11), 7 states have call predecessors, (11), 11 states have call successors, (11) [2023-11-12 00:11:37,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1533 states to 1533 states and 1816 transitions. [2023-11-12 00:11:37,080 INFO L78 Accepts]: Start accepts. Automaton has 1533 states and 1816 transitions. Word has length 13 [2023-11-12 00:11:37,081 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:11:37,081 INFO L495 AbstractCegarLoop]: Abstraction has 1533 states and 1816 transitions. [2023-11-12 00:11:37,081 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:11:37,082 INFO L276 IsEmpty]: Start isEmpty. Operand 1533 states and 1816 transitions. [2023-11-12 00:11:37,082 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2023-11-12 00:11:37,083 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:11:37,083 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 00:11:37,096 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c608ec5-24c4-4bd6-93e7-4018f22dc20d/bin/utaipan-verify-NcY6lQBIFX/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2023-11-12 00:11:37,295 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c608ec5-24c4-4bd6-93e7-4018f22dc20d/bin/utaipan-verify-NcY6lQBIFX/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-12 00:11:37,295 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr42REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 725 more)] === [2023-11-12 00:11:37,295 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:11:37,296 INFO L85 PathProgramCache]: Analyzing trace with hash -957630610, now seen corresponding path program 1 times [2023-11-12 00:11:37,296 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-12 00:11:37,296 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [524804207] [2023-11-12 00:11:37,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:11:37,296 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 [2023-11-12 00:11:37,297 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c608ec5-24c4-4bd6-93e7-4018f22dc20d/bin/utaipan-verify-NcY6lQBIFX/mathsat [2023-11-12 00:11:37,297 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c608ec5-24c4-4bd6-93e7-4018f22dc20d/bin/utaipan-verify-NcY6lQBIFX/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-12 00:11:37,299 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c608ec5-24c4-4bd6-93e7-4018f22dc20d/bin/utaipan-verify-NcY6lQBIFX/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2023-11-12 00:11:37,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:11:37,499 INFO L262 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-12 00:11:37,504 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 00:11:37,512 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2023-11-12 00:11:37,613 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 00:11:37,613 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-12 00:11:37,614 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-12 00:11:37,614 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [524804207] [2023-11-12 00:11:37,614 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [524804207] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:11:37,614 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 00:11:37,615 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-12 00:11:37,615 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [121767961] [2023-11-12 00:11:37,615 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:11:37,615 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-12 00:11:37,616 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-12 00:11:37,616 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-12 00:11:37,616 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-12 00:11:37,617 INFO L87 Difference]: Start difference. First operand 1533 states and 1816 transitions. Second operand has 4 states, 3 states have (on average 9.0) internal successors, (27), 4 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:11:41,648 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:11:41,648 INFO L93 Difference]: Finished difference Result 1806 states and 2074 transitions. [2023-11-12 00:11:41,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-12 00:11:41,649 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 9.0) internal successors, (27), 4 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2023-11-12 00:11:41,649 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:11:41,659 INFO L225 Difference]: With dead ends: 1806 [2023-11-12 00:11:41,660 INFO L226 Difference]: Without dead ends: 1806 [2023-11-12 00:11:41,660 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-12 00:11:41,661 INFO L413 NwaCegarLoop]: 673 mSDtfsCounter, 1304 mSDsluCounter, 875 mSDsCounter, 0 mSdLazyCounter, 1531 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1315 SdHoareTripleChecker+Valid, 1548 SdHoareTripleChecker+Invalid, 1545 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 1531 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.0s IncrementalHoareTripleChecker+Time [2023-11-12 00:11:41,661 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1315 Valid, 1548 Invalid, 1545 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 1531 Invalid, 0 Unknown, 0 Unchecked, 4.0s Time] [2023-11-12 00:11:41,666 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1806 states. [2023-11-12 00:11:41,694 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1806 to 1529. [2023-11-12 00:11:41,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1529 states, 945 states have (on average 1.892063492063492) internal successors, (1788), 1519 states have internal predecessors, (1788), 13 states have call successors, (13), 3 states have call predecessors, (13), 2 states have return successors, (11), 7 states have call predecessors, (11), 11 states have call successors, (11) [2023-11-12 00:11:41,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1529 states to 1529 states and 1812 transitions. [2023-11-12 00:11:41,703 INFO L78 Accepts]: Start accepts. Automaton has 1529 states and 1812 transitions. Word has length 27 [2023-11-12 00:11:41,704 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:11:41,704 INFO L495 AbstractCegarLoop]: Abstraction has 1529 states and 1812 transitions. [2023-11-12 00:11:41,704 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 9.0) internal successors, (27), 4 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:11:41,704 INFO L276 IsEmpty]: Start isEmpty. Operand 1529 states and 1812 transitions. [2023-11-12 00:11:41,705 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2023-11-12 00:11:41,705 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:11:41,706 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 00:11:41,718 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c608ec5-24c4-4bd6-93e7-4018f22dc20d/bin/utaipan-verify-NcY6lQBIFX/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2023-11-12 00:11:41,918 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c608ec5-24c4-4bd6-93e7-4018f22dc20d/bin/utaipan-verify-NcY6lQBIFX/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-12 00:11:41,918 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr43REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 725 more)] === [2023-11-12 00:11:41,918 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:11:41,919 INFO L85 PathProgramCache]: Analyzing trace with hash -957630609, now seen corresponding path program 1 times [2023-11-12 00:11:41,919 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-12 00:11:41,919 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2091937688] [2023-11-12 00:11:41,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:11:41,920 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-12 00:11:41,920 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c608ec5-24c4-4bd6-93e7-4018f22dc20d/bin/utaipan-verify-NcY6lQBIFX/mathsat [2023-11-12 00:11:41,921 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c608ec5-24c4-4bd6-93e7-4018f22dc20d/bin/utaipan-verify-NcY6lQBIFX/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-12 00:11:41,944 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c608ec5-24c4-4bd6-93e7-4018f22dc20d/bin/utaipan-verify-NcY6lQBIFX/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2023-11-12 00:11:42,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:11:42,124 INFO L262 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-12 00:11:42,128 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 00:11:42,136 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-11-12 00:11:42,347 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 00:11:42,347 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-12 00:11:42,348 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-12 00:11:42,348 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2091937688] [2023-11-12 00:11:42,348 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2091937688] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:11:42,348 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 00:11:42,348 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-12 00:11:42,349 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2042919906] [2023-11-12 00:11:42,349 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:11:42,349 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-12 00:11:42,349 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-12 00:11:42,350 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-12 00:11:42,350 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-12 00:11:42,350 INFO L87 Difference]: Start difference. First operand 1529 states and 1812 transitions. Second operand has 4 states, 3 states have (on average 9.0) internal successors, (27), 4 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:11:48,175 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:11:48,175 INFO L93 Difference]: Finished difference Result 1897 states and 2080 transitions. [2023-11-12 00:11:48,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-12 00:11:48,176 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 9.0) internal successors, (27), 4 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2023-11-12 00:11:48,176 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:11:48,185 INFO L225 Difference]: With dead ends: 1897 [2023-11-12 00:11:48,185 INFO L226 Difference]: Without dead ends: 1897 [2023-11-12 00:11:48,186 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-12 00:11:48,186 INFO L413 NwaCegarLoop]: 1066 mSDtfsCounter, 684 mSDsluCounter, 1235 mSDsCounter, 0 mSdLazyCounter, 1592 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 689 SdHoareTripleChecker+Valid, 2301 SdHoareTripleChecker+Invalid, 1595 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 1592 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.7s IncrementalHoareTripleChecker+Time [2023-11-12 00:11:48,187 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [689 Valid, 2301 Invalid, 1595 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 1592 Invalid, 0 Unknown, 0 Unchecked, 5.7s Time] [2023-11-12 00:11:48,191 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1897 states. [2023-11-12 00:11:48,219 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1897 to 1525. [2023-11-12 00:11:48,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1525 states, 945 states have (on average 1.8878306878306879) internal successors, (1784), 1515 states have internal predecessors, (1784), 13 states have call successors, (13), 3 states have call predecessors, (13), 2 states have return successors, (11), 7 states have call predecessors, (11), 11 states have call successors, (11) [2023-11-12 00:11:48,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1525 states to 1525 states and 1808 transitions. [2023-11-12 00:11:48,251 INFO L78 Accepts]: Start accepts. Automaton has 1525 states and 1808 transitions. Word has length 27 [2023-11-12 00:11:48,251 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:11:48,251 INFO L495 AbstractCegarLoop]: Abstraction has 1525 states and 1808 transitions. [2023-11-12 00:11:48,251 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 9.0) internal successors, (27), 4 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:11:48,251 INFO L276 IsEmpty]: Start isEmpty. Operand 1525 states and 1808 transitions. [2023-11-12 00:11:48,252 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2023-11-12 00:11:48,253 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:11:48,253 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 00:11:48,271 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c608ec5-24c4-4bd6-93e7-4018f22dc20d/bin/utaipan-verify-NcY6lQBIFX/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2023-11-12 00:11:48,453 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c608ec5-24c4-4bd6-93e7-4018f22dc20d/bin/utaipan-verify-NcY6lQBIFX/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-12 00:11:48,453 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr107REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 725 more)] === [2023-11-12 00:11:48,454 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:11:48,454 INFO L85 PathProgramCache]: Analyzing trace with hash -3860248, now seen corresponding path program 1 times [2023-11-12 00:11:48,455 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-12 00:11:48,455 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1675406648] [2023-11-12 00:11:48,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:11:48,455 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-12 00:11:48,455 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c608ec5-24c4-4bd6-93e7-4018f22dc20d/bin/utaipan-verify-NcY6lQBIFX/mathsat [2023-11-12 00:11:48,460 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c608ec5-24c4-4bd6-93e7-4018f22dc20d/bin/utaipan-verify-NcY6lQBIFX/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-12 00:11:48,497 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c608ec5-24c4-4bd6-93e7-4018f22dc20d/bin/utaipan-verify-NcY6lQBIFX/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2023-11-12 00:11:48,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:11:48,719 INFO L262 TraceCheckSpWp]: Trace formula consists of 179 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-12 00:11:48,722 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 00:11:48,776 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 00:11:48,776 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-12 00:11:48,776 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-12 00:11:48,777 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1675406648] [2023-11-12 00:11:48,777 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1675406648] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:11:48,777 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 00:11:48,777 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-12 00:11:48,777 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [273636589] [2023-11-12 00:11:48,777 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:11:48,778 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-12 00:11:48,778 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-12 00:11:48,778 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-12 00:11:48,779 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-12 00:11:48,779 INFO L87 Difference]: Start difference. First operand 1525 states and 1808 transitions. Second operand has 4 states, 4 states have (on average 10.75) internal successors, (43), 4 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:11:48,857 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:11:48,857 INFO L93 Difference]: Finished difference Result 1519 states and 1798 transitions. [2023-11-12 00:11:48,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-12 00:11:48,858 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.75) internal successors, (43), 4 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 43 [2023-11-12 00:11:48,858 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:11:48,866 INFO L225 Difference]: With dead ends: 1519 [2023-11-12 00:11:48,866 INFO L226 Difference]: Without dead ends: 1519 [2023-11-12 00:11:48,867 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-12 00:11:48,867 INFO L413 NwaCegarLoop]: 1321 mSDtfsCounter, 31 mSDsluCounter, 2604 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 3925 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-12 00:11:48,868 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 3925 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-12 00:11:48,872 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1519 states. [2023-11-12 00:11:48,893 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1519 to 1519. [2023-11-12 00:11:48,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1519 states, 939 states have (on average 1.8892438764643238) internal successors, (1774), 1509 states have internal predecessors, (1774), 13 states have call successors, (13), 3 states have call predecessors, (13), 2 states have return successors, (11), 7 states have call predecessors, (11), 11 states have call successors, (11) [2023-11-12 00:11:48,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1519 states to 1519 states and 1798 transitions. [2023-11-12 00:11:48,902 INFO L78 Accepts]: Start accepts. Automaton has 1519 states and 1798 transitions. Word has length 43 [2023-11-12 00:11:48,902 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:11:48,902 INFO L495 AbstractCegarLoop]: Abstraction has 1519 states and 1798 transitions. [2023-11-12 00:11:48,902 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.75) internal successors, (43), 4 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:11:48,903 INFO L276 IsEmpty]: Start isEmpty. Operand 1519 states and 1798 transitions. [2023-11-12 00:11:48,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2023-11-12 00:11:48,904 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:11:48,904 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 00:11:48,933 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c608ec5-24c4-4bd6-93e7-4018f22dc20d/bin/utaipan-verify-NcY6lQBIFX/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2023-11-12 00:11:49,118 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c608ec5-24c4-4bd6-93e7-4018f22dc20d/bin/utaipan-verify-NcY6lQBIFX/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-12 00:11:49,118 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr107REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 725 more)] === [2023-11-12 00:11:49,119 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:11:49,119 INFO L85 PathProgramCache]: Analyzing trace with hash 168131124, now seen corresponding path program 1 times [2023-11-12 00:11:49,120 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-12 00:11:49,120 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1929040878] [2023-11-12 00:11:49,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:11:49,120 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-12 00:11:49,121 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c608ec5-24c4-4bd6-93e7-4018f22dc20d/bin/utaipan-verify-NcY6lQBIFX/mathsat [2023-11-12 00:11:49,122 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c608ec5-24c4-4bd6-93e7-4018f22dc20d/bin/utaipan-verify-NcY6lQBIFX/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-12 00:11:49,126 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c608ec5-24c4-4bd6-93e7-4018f22dc20d/bin/utaipan-verify-NcY6lQBIFX/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2023-11-12 00:11:49,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:11:49,375 INFO L262 TraceCheckSpWp]: Trace formula consists of 203 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-12 00:11:49,381 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 00:11:49,728 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 00:11:49,728 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-12 00:11:49,728 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-12 00:11:49,728 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1929040878] [2023-11-12 00:11:49,728 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1929040878] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:11:49,728 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 00:11:49,728 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-12 00:11:49,729 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1709068909] [2023-11-12 00:11:49,729 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:11:49,729 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 00:11:49,729 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-12 00:11:49,730 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 00:11:49,730 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 00:11:49,730 INFO L87 Difference]: Start difference. First operand 1519 states and 1798 transitions. Second operand has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:11:49,830 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:11:49,830 INFO L93 Difference]: Finished difference Result 1566 states and 1845 transitions. [2023-11-12 00:11:49,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 00:11:49,831 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 51 [2023-11-12 00:11:49,832 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:11:49,840 INFO L225 Difference]: With dead ends: 1566 [2023-11-12 00:11:49,840 INFO L226 Difference]: Without dead ends: 1566 [2023-11-12 00:11:49,840 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 00:11:49,841 INFO L413 NwaCegarLoop]: 1336 mSDtfsCounter, 67 mSDsluCounter, 1241 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 2577 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-12 00:11:49,841 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [69 Valid, 2577 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-12 00:11:49,845 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1566 states. [2023-11-12 00:11:49,868 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1566 to 1566. [2023-11-12 00:11:49,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1566 states, 986 states have (on average 1.8468559837728196) internal successors, (1821), 1556 states have internal predecessors, (1821), 13 states have call successors, (13), 3 states have call predecessors, (13), 2 states have return successors, (11), 7 states have call predecessors, (11), 11 states have call successors, (11) [2023-11-12 00:11:49,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1566 states to 1566 states and 1845 transitions. [2023-11-12 00:11:49,876 INFO L78 Accepts]: Start accepts. Automaton has 1566 states and 1845 transitions. Word has length 51 [2023-11-12 00:11:49,877 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:11:49,877 INFO L495 AbstractCegarLoop]: Abstraction has 1566 states and 1845 transitions. [2023-11-12 00:11:49,877 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:11:49,877 INFO L276 IsEmpty]: Start isEmpty. Operand 1566 states and 1845 transitions. [2023-11-12 00:11:49,879 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2023-11-12 00:11:49,879 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:11:49,879 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 00:11:49,902 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c608ec5-24c4-4bd6-93e7-4018f22dc20d/bin/utaipan-verify-NcY6lQBIFX/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2023-11-12 00:11:50,098 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c608ec5-24c4-4bd6-93e7-4018f22dc20d/bin/utaipan-verify-NcY6lQBIFX/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-12 00:11:50,098 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr61REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 725 more)] === [2023-11-12 00:11:50,098 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:11:50,098 INFO L85 PathProgramCache]: Analyzing trace with hash 754975115, now seen corresponding path program 1 times [2023-11-12 00:11:50,099 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-12 00:11:50,099 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1196248497] [2023-11-12 00:11:50,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:11:50,099 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-12 00:11:50,100 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c608ec5-24c4-4bd6-93e7-4018f22dc20d/bin/utaipan-verify-NcY6lQBIFX/mathsat [2023-11-12 00:11:50,101 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c608ec5-24c4-4bd6-93e7-4018f22dc20d/bin/utaipan-verify-NcY6lQBIFX/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-12 00:11:50,110 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c608ec5-24c4-4bd6-93e7-4018f22dc20d/bin/utaipan-verify-NcY6lQBIFX/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2023-11-12 00:11:50,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:11:50,555 INFO L262 TraceCheckSpWp]: Trace formula consists of 238 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-12 00:11:50,562 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 00:11:50,573 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2023-11-12 00:11:50,583 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-11-12 00:11:51,193 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-12 00:11:51,195 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 9 [2023-11-12 00:11:51,214 INFO L322 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2023-11-12 00:11:51,215 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2023-11-12 00:11:51,244 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 00:11:51,244 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-12 00:11:51,244 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-12 00:11:51,244 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1196248497] [2023-11-12 00:11:51,245 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1196248497] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:11:51,245 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 00:11:51,245 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-12 00:11:51,245 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2067284532] [2023-11-12 00:11:51,245 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:11:51,246 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-12 00:11:51,246 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-12 00:11:51,246 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-12 00:11:51,246 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-12 00:11:51,247 INFO L87 Difference]: Start difference. First operand 1566 states and 1845 transitions. Second operand has 4 states, 3 states have (on average 18.0) internal successors, (54), 4 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:11:55,616 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:11:55,616 INFO L93 Difference]: Finished difference Result 1758 states and 2022 transitions. [2023-11-12 00:11:55,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-12 00:11:55,617 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 18.0) internal successors, (54), 4 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 54 [2023-11-12 00:11:55,617 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:11:55,626 INFO L225 Difference]: With dead ends: 1758 [2023-11-12 00:11:55,626 INFO L226 Difference]: Without dead ends: 1758 [2023-11-12 00:11:55,626 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-12 00:11:55,627 INFO L413 NwaCegarLoop]: 424 mSDtfsCounter, 1542 mSDsluCounter, 210 mSDsCounter, 0 mSdLazyCounter, 1073 mSolverCounterSat, 95 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1558 SdHoareTripleChecker+Valid, 634 SdHoareTripleChecker+Invalid, 1168 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 95 IncrementalHoareTripleChecker+Valid, 1073 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.3s IncrementalHoareTripleChecker+Time [2023-11-12 00:11:55,627 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1558 Valid, 634 Invalid, 1168 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [95 Valid, 1073 Invalid, 0 Unknown, 0 Unchecked, 4.3s Time] [2023-11-12 00:11:55,630 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1758 states. [2023-11-12 00:11:55,651 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1758 to 1312. [2023-11-12 00:11:55,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1312 states, 816 states have (on average 1.7352941176470589) internal successors, (1416), 1302 states have internal predecessors, (1416), 13 states have call successors, (13), 3 states have call predecessors, (13), 2 states have return successors, (11), 7 states have call predecessors, (11), 11 states have call successors, (11) [2023-11-12 00:11:55,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1312 states to 1312 states and 1440 transitions. [2023-11-12 00:11:55,657 INFO L78 Accepts]: Start accepts. Automaton has 1312 states and 1440 transitions. Word has length 54 [2023-11-12 00:11:55,657 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:11:55,657 INFO L495 AbstractCegarLoop]: Abstraction has 1312 states and 1440 transitions. [2023-11-12 00:11:55,657 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 18.0) internal successors, (54), 4 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:11:55,657 INFO L276 IsEmpty]: Start isEmpty. Operand 1312 states and 1440 transitions. [2023-11-12 00:11:55,658 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2023-11-12 00:11:55,658 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:11:55,659 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 00:11:55,679 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c608ec5-24c4-4bd6-93e7-4018f22dc20d/bin/utaipan-verify-NcY6lQBIFX/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2023-11-12 00:11:55,873 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c608ec5-24c4-4bd6-93e7-4018f22dc20d/bin/utaipan-verify-NcY6lQBIFX/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-12 00:11:55,873 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr66REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 725 more)] === [2023-11-12 00:11:55,873 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:11:55,873 INFO L85 PathProgramCache]: Analyzing trace with hash -1572100217, now seen corresponding path program 1 times [2023-11-12 00:11:55,874 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-12 00:11:55,874 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [937867882] [2023-11-12 00:11:55,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:11:55,874 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-12 00:11:55,874 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c608ec5-24c4-4bd6-93e7-4018f22dc20d/bin/utaipan-verify-NcY6lQBIFX/mathsat [2023-11-12 00:11:55,875 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c608ec5-24c4-4bd6-93e7-4018f22dc20d/bin/utaipan-verify-NcY6lQBIFX/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-12 00:11:55,876 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c608ec5-24c4-4bd6-93e7-4018f22dc20d/bin/utaipan-verify-NcY6lQBIFX/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2023-11-12 00:11:56,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:11:56,220 INFO L262 TraceCheckSpWp]: Trace formula consists of 265 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-12 00:11:56,223 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 00:11:56,235 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2023-11-12 00:11:56,256 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2023-11-12 00:11:56,290 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2023-11-12 00:11:56,305 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 00:11:56,306 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-12 00:11:56,306 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-12 00:11:56,306 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [937867882] [2023-11-12 00:11:56,306 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [937867882] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:11:56,306 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 00:11:56,307 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-12 00:11:56,307 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1174602186] [2023-11-12 00:11:56,307 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:11:56,308 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-12 00:11:56,309 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-12 00:11:56,309 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-12 00:11:56,309 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-12 00:11:56,310 INFO L87 Difference]: Start difference. First operand 1312 states and 1440 transitions. Second operand has 5 states, 4 states have (on average 14.75) internal successors, (59), 5 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)