./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test1-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version a0165632 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_a605240a-8277-4c40-807c-aac12981d3d0/bin/utaipan-verify-YMUCfTKeje/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a605240a-8277-4c40-807c-aac12981d3d0/bin/utaipan-verify-YMUCfTKeje/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a605240a-8277-4c40-807c-aac12981d3d0/bin/utaipan-verify-YMUCfTKeje/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a605240a-8277-4c40-807c-aac12981d3d0/bin/utaipan-verify-YMUCfTKeje/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test1-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a605240a-8277-4c40-807c-aac12981d3d0/bin/utaipan-verify-YMUCfTKeje/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a605240a-8277-4c40-807c-aac12981d3d0/bin/utaipan-verify-YMUCfTKeje --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 7f552e336cb6eb3ea16ba25a84411e1d0c8dcfaa2b088c21df87ffefed1a84a7 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-a016563 [2024-11-09 06:08:03,985 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-09 06:08:04,078 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a605240a-8277-4c40-807c-aac12981d3d0/bin/utaipan-verify-YMUCfTKeje/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2024-11-09 06:08:04,083 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-09 06:08:04,084 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-09 06:08:04,129 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-09 06:08:04,131 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-09 06:08:04,132 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-09 06:08:04,133 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-09 06:08:04,134 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-09 06:08:04,134 INFO L153 SettingsManager]: * User list type=DISABLED [2024-11-09 06:08:04,135 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2024-11-09 06:08:04,135 INFO L153 SettingsManager]: * Explicit value domain=true [2024-11-09 06:08:04,135 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2024-11-09 06:08:04,136 INFO L153 SettingsManager]: * Octagon Domain=false [2024-11-09 06:08:04,136 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2024-11-09 06:08:04,136 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2024-11-09 06:08:04,140 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2024-11-09 06:08:04,141 INFO L153 SettingsManager]: * Interval Domain=false [2024-11-09 06:08:04,141 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2024-11-09 06:08:04,142 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2024-11-09 06:08:04,142 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2024-11-09 06:08:04,143 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-09 06:08:04,143 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-09 06:08:04,143 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-09 06:08:04,144 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-09 06:08:04,144 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-09 06:08:04,144 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-09 06:08:04,145 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-09 06:08:04,145 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-09 06:08:04,146 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-09 06:08:04,146 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-09 06:08:04,146 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-09 06:08:04,147 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-09 06:08:04,147 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-09 06:08:04,147 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-09 06:08:04,148 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-09 06:08:04,148 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-09 06:08:04,149 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-09 06:08:04,149 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-09 06:08:04,149 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-09 06:08:04,150 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-09 06:08:04,150 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-09 06:08:04,150 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-09 06:08:04,151 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2024-11-09 06:08:04,151 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-09 06:08:04,151 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-09 06:08:04,151 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2024-11-09 06:08:04,152 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-09 06:08:04,152 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_a605240a-8277-4c40-807c-aac12981d3d0/bin/utaipan-verify-YMUCfTKeje/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a605240a-8277-4c40-807c-aac12981d3d0/bin/utaipan-verify-YMUCfTKeje Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7f552e336cb6eb3ea16ba25a84411e1d0c8dcfaa2b088c21df87ffefed1a84a7 [2024-11-09 06:08:04,551 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-09 06:08:04,583 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-09 06:08:04,588 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-09 06:08:04,590 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-09 06:08:04,591 INFO L274 PluginConnector]: CDTParser initialized [2024-11-09 06:08:04,592 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a605240a-8277-4c40-807c-aac12981d3d0/bin/utaipan-verify-YMUCfTKeje/../../sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test1-2.i Unable to find full path for "g++" [2024-11-09 06:08:06,637 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-09 06:08:06,984 INFO L384 CDTParser]: Found 1 translation units. [2024-11-09 06:08:06,985 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a605240a-8277-4c40-807c-aac12981d3d0/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test1-2.i [2024-11-09 06:08:07,003 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a605240a-8277-4c40-807c-aac12981d3d0/bin/utaipan-verify-YMUCfTKeje/data/8902d5753/7de222e4b59846cca66b4404de319f3c/FLAG6930d4827 [2024-11-09 06:08:07,023 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a605240a-8277-4c40-807c-aac12981d3d0/bin/utaipan-verify-YMUCfTKeje/data/8902d5753/7de222e4b59846cca66b4404de319f3c [2024-11-09 06:08:07,026 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-09 06:08:07,028 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-09 06:08:07,029 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-09 06:08:07,030 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-09 06:08:07,037 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-09 06:08:07,040 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 06:08:07" (1/1) ... [2024-11-09 06:08:07,041 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@62367315 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:08:07, skipping insertion in model container [2024-11-09 06:08:07,042 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 06:08:07" (1/1) ... [2024-11-09 06:08:07,114 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-09 06:08:07,742 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-09 06:08:07,797 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-09 06:08:07,802 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-09 06:08:07,807 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-09 06:08:07,814 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-09 06:08:07,830 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-09 06:08:07,832 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-09 06:08:07,835 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-09 06:08:07,837 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-09 06:08:07,839 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-09 06:08:07,840 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-09 06:08:07,846 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-09 06:08:07,853 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 06:08:07,881 ERROR L321 MainTranslator]: Unsupported Syntax: Found a cast between two array/pointer types of different sizes while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) [2024-11-09 06:08:07,882 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@ba9386e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:08:07, skipping insertion in model container [2024-11-09 06:08:07,882 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-09 06:08:07,882 INFO L186 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2024-11-09 06:08:07,884 INFO L158 Benchmark]: Toolchain (without parser) took 855.35ms. Allocated memory is still 155.2MB. Free memory was 115.8MB in the beginning and 113.3MB in the end (delta: 2.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-09 06:08:07,887 INFO L158 Benchmark]: CDTParser took 0.52ms. Allocated memory is still 104.9MB. Free memory is still 73.8MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-09 06:08:07,890 INFO L158 Benchmark]: CACSL2BoogieTranslator took 852.74ms. Allocated memory is still 155.2MB. Free memory was 115.8MB in the beginning and 113.3MB in the end (delta: 2.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-09 06:08:07,892 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.52ms. Allocated memory is still 104.9MB. Free memory is still 73.8MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 852.74ms. Allocated memory is still 155.2MB. Free memory was 115.8MB in the beginning and 113.3MB in the end (delta: 2.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 764]: 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_a605240a-8277-4c40-807c-aac12981d3d0/bin/utaipan-verify-YMUCfTKeje/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a605240a-8277-4c40-807c-aac12981d3d0/bin/utaipan-verify-YMUCfTKeje/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a605240a-8277-4c40-807c-aac12981d3d0/bin/utaipan-verify-YMUCfTKeje/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a605240a-8277-4c40-807c-aac12981d3d0/bin/utaipan-verify-YMUCfTKeje/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test1-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a605240a-8277-4c40-807c-aac12981d3d0/bin/utaipan-verify-YMUCfTKeje/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a605240a-8277-4c40-807c-aac12981d3d0/bin/utaipan-verify-YMUCfTKeje --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 7f552e336cb6eb3ea16ba25a84411e1d0c8dcfaa2b088c21df87ffefed1a84a7 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-a016563 [2024-11-09 06:08:10,332 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-09 06:08:10,433 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a605240a-8277-4c40-807c-aac12981d3d0/bin/utaipan-verify-YMUCfTKeje/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf [2024-11-09 06:08:10,440 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-09 06:08:10,441 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-09 06:08:10,483 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-09 06:08:10,483 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-09 06:08:10,484 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-09 06:08:10,485 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-09 06:08:10,486 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-09 06:08:10,486 INFO L153 SettingsManager]: * User list type=DISABLED [2024-11-09 06:08:10,487 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2024-11-09 06:08:10,487 INFO L153 SettingsManager]: * Explicit value domain=true [2024-11-09 06:08:10,487 INFO L153 SettingsManager]: * Octagon Domain=false [2024-11-09 06:08:10,488 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2024-11-09 06:08:10,488 INFO L153 SettingsManager]: * Interval Domain=false [2024-11-09 06:08:10,489 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-09 06:08:10,489 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-09 06:08:10,489 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-09 06:08:10,493 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-09 06:08:10,496 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-09 06:08:10,496 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-09 06:08:10,497 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-09 06:08:10,497 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-09 06:08:10,497 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-09 06:08:10,497 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-09 06:08:10,498 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-09 06:08:10,498 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-09 06:08:10,498 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2024-11-09 06:08:10,498 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-09 06:08:10,499 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2024-11-09 06:08:10,499 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-09 06:08:10,499 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-09 06:08:10,499 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-09 06:08:10,501 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-09 06:08:10,502 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-09 06:08:10,502 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-09 06:08:10,502 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-09 06:08:10,503 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-09 06:08:10,504 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-09 06:08:10,504 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-09 06:08:10,518 INFO L153 SettingsManager]: * Trace refinement strategy=WALRUS [2024-11-09 06:08:10,518 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2024-11-09 06:08:10,518 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-09 06:08:10,519 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2024-11-09 06:08:10,519 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a605240a-8277-4c40-807c-aac12981d3d0/bin/utaipan-verify-YMUCfTKeje/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a605240a-8277-4c40-807c-aac12981d3d0/bin/utaipan-verify-YMUCfTKeje Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7f552e336cb6eb3ea16ba25a84411e1d0c8dcfaa2b088c21df87ffefed1a84a7 [2024-11-09 06:08:10,885 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-09 06:08:10,909 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-09 06:08:10,914 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-09 06:08:10,916 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-09 06:08:10,917 INFO L274 PluginConnector]: CDTParser initialized [2024-11-09 06:08:10,918 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a605240a-8277-4c40-807c-aac12981d3d0/bin/utaipan-verify-YMUCfTKeje/../../sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test1-2.i Unable to find full path for "g++" [2024-11-09 06:08:13,212 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-09 06:08:13,540 INFO L384 CDTParser]: Found 1 translation units. [2024-11-09 06:08:13,541 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a605240a-8277-4c40-807c-aac12981d3d0/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test1-2.i [2024-11-09 06:08:13,558 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a605240a-8277-4c40-807c-aac12981d3d0/bin/utaipan-verify-YMUCfTKeje/data/b4039d674/648b35ee0ae34eef90cbbe52c405d60b/FLAG6caf06f1f [2024-11-09 06:08:13,792 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a605240a-8277-4c40-807c-aac12981d3d0/bin/utaipan-verify-YMUCfTKeje/data/b4039d674/648b35ee0ae34eef90cbbe52c405d60b [2024-11-09 06:08:13,795 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-09 06:08:13,796 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-09 06:08:13,798 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-09 06:08:13,798 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-09 06:08:13,807 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-09 06:08:13,808 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 06:08:13" (1/1) ... [2024-11-09 06:08:13,809 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@40677239 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:08:13, skipping insertion in model container [2024-11-09 06:08:13,809 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 06:08:13" (1/1) ... [2024-11-09 06:08:13,870 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-09 06:08:14,459 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-09 06:08:14,522 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-09 06:08:14,528 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-09 06:08:14,534 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-09 06:08:14,567 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-09 06:08:14,606 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-09 06:08:14,607 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-09 06:08:14,616 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-09 06:08:14,623 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-09 06:08:14,629 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-09 06:08:14,633 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-09 06:08:14,649 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-09 06:08:14,666 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 06:08:14,694 INFO L197 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2024-11-09 06:08:14,713 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-09 06:08:14,761 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-09 06:08:14,802 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-09 06:08:14,804 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-09 06:08:14,809 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-09 06:08:14,820 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-09 06:08:14,836 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-09 06:08:14,845 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-09 06:08:14,847 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-09 06:08:14,852 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-09 06:08:14,853 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-09 06:08:14,854 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-09 06:08:14,857 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-09 06:08:14,863 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 06:08:14,871 INFO L200 MainTranslator]: Completed pre-run [2024-11-09 06:08:14,985 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 06:08:15,052 INFO L204 MainTranslator]: Completed translation [2024-11-09 06:08:15,053 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:08:15 WrapperNode [2024-11-09 06:08:15,053 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-09 06:08:15,054 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-09 06:08:15,055 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-09 06:08:15,055 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-09 06:08:15,063 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:08:15" (1/1) ... [2024-11-09 06:08:15,093 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:08:15" (1/1) ... [2024-11-09 06:08:15,163 INFO L138 Inliner]: procedures = 179, calls = 231, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 784 [2024-11-09 06:08:15,164 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-09 06:08:15,164 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-09 06:08:15,165 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-09 06:08:15,165 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-09 06:08:15,182 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:08:15" (1/1) ... [2024-11-09 06:08:15,182 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:08:15" (1/1) ... [2024-11-09 06:08:15,198 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:08:15" (1/1) ... [2024-11-09 06:08:15,202 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:08:15" (1/1) ... [2024-11-09 06:08:15,268 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:08:15" (1/1) ... [2024-11-09 06:08:15,276 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:08:15" (1/1) ... [2024-11-09 06:08:15,280 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:08:15" (1/1) ... [2024-11-09 06:08:15,291 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:08:15" (1/1) ... [2024-11-09 06:08:15,304 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-09 06:08:15,305 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-09 06:08:15,305 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-09 06:08:15,306 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-09 06:08:15,306 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:08:15" (1/1) ... [2024-11-09 06:08:15,313 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-09 06:08:15,325 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a605240a-8277-4c40-807c-aac12981d3d0/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 06:08:15,349 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a605240a-8277-4c40-807c-aac12981d3d0/bin/utaipan-verify-YMUCfTKeje/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2024-11-09 06:08:15,357 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a605240a-8277-4c40-807c-aac12981d3d0/bin/utaipan-verify-YMUCfTKeje/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2024-11-09 06:08:15,389 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2024-11-09 06:08:15,390 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2024-11-09 06:08:15,390 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-11-09 06:08:15,391 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-11-09 06:08:15,391 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2024-11-09 06:08:15,391 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2024-11-09 06:08:15,391 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-09 06:08:15,392 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-09 06:08:15,392 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2024-11-09 06:08:15,392 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2024-11-09 06:08:15,392 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-09 06:08:15,392 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2024-11-09 06:08:15,392 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2024-11-09 06:08:15,392 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-09 06:08:15,393 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-09 06:08:15,638 INFO L238 CfgBuilder]: Building ICFG [2024-11-09 06:08:15,640 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-09 06:08:15,644 WARN L781 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2024-11-09 06:08:19,490 INFO L? ?]: Removed 910 outVars from TransFormulas that were not future-live. [2024-11-09 06:08:19,490 INFO L287 CfgBuilder]: Performing block encoding [2024-11-09 06:08:19,534 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-09 06:08:19,534 INFO L316 CfgBuilder]: Removed 35 assume(true) statements. [2024-11-09 06:08:19,534 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 06:08:19 BoogieIcfgContainer [2024-11-09 06:08:19,534 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-09 06:08:19,536 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-09 06:08:19,536 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-09 06:08:19,544 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-09 06:08:19,544 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.11 06:08:13" (1/3) ... [2024-11-09 06:08:19,545 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@252e63e7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 06:08:19, skipping insertion in model container [2024-11-09 06:08:19,546 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:08:15" (2/3) ... [2024-11-09 06:08:19,547 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@252e63e7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 06:08:19, skipping insertion in model container [2024-11-09 06:08:19,547 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 06:08:19" (3/3) ... [2024-11-09 06:08:19,548 INFO L112 eAbstractionObserver]: Analyzing ICFG uthash_SAX_test1-2.i [2024-11-09 06:08:19,568 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-09 06:08:19,568 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 425 error locations. [2024-11-09 06:08:19,650 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-09 06:08:19,656 INFO L333 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=None, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@3ebb2217, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-09 06:08:19,656 INFO L334 AbstractCegarLoop]: Starting to check reachability of 425 error locations. [2024-11-09 06:08:19,665 INFO L276 IsEmpty]: Start isEmpty. Operand has 862 states, 424 states have (on average 2.214622641509434) internal successors, (939), 856 states have internal predecessors, (939), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 4 states have call predecessors, (13), 13 states have call successors, (13) [2024-11-09 06:08:19,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2024-11-09 06:08:19,675 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 06:08:19,676 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2024-11-09 06:08:19,676 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 422 more)] === [2024-11-09 06:08:19,684 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:08:19,684 INFO L85 PathProgramCache]: Analyzing trace with hash 1155791597, now seen corresponding path program 1 times [2024-11-09 06:08:19,693 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-09 06:08:19,693 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [490792799] [2024-11-09 06:08:19,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:08:19,694 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-09 06:08:19,694 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a605240a-8277-4c40-807c-aac12981d3d0/bin/utaipan-verify-YMUCfTKeje/mathsat [2024-11-09 06:08:19,697 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a605240a-8277-4c40-807c-aac12981d3d0/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-09 06:08:19,703 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a605240a-8277-4c40-807c-aac12981d3d0/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2024-11-09 06:08:19,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:08:19,863 INFO L255 TraceCheckSpWp]: Trace formula consists of 28 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-11-09 06:08:19,868 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 06:08:19,878 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 06:08:19,878 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 06:08:19,879 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-09 06:08:19,879 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [490792799] [2024-11-09 06:08:19,880 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [490792799] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 06:08:19,880 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 06:08:19,880 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 06:08:19,882 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [854450602] [2024-11-09 06:08:19,884 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 06:08:19,889 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-09 06:08:19,889 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-09 06:08:19,925 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-09 06:08:19,926 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-09 06:08:19,932 INFO L87 Difference]: Start difference. First operand has 862 states, 424 states have (on average 2.214622641509434) internal successors, (939), 856 states have internal predecessors, (939), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 4 states have call predecessors, (13), 13 states have call successors, (13) Second operand has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 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) [2024-11-09 06:08:20,025 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 06:08:20,029 INFO L93 Difference]: Finished difference Result 852 states and 914 transitions. [2024-11-09 06:08:20,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-09 06:08:20,033 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 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 [2024-11-09 06:08:20,034 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 06:08:20,052 INFO L225 Difference]: With dead ends: 852 [2024-11-09 06:08:20,052 INFO L226 Difference]: Without dead ends: 850 [2024-11-09 06:08:20,054 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-09 06:08:20,058 INFO L432 NwaCegarLoop]: 914 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 914 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-09 06:08:20,059 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 914 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-09 06:08:20,096 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 850 states. [2024-11-09 06:08:20,147 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 850 to 850. [2024-11-09 06:08:20,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 850 states, 418 states have (on average 2.1196172248803826) internal successors, (886), 844 states have internal predecessors, (886), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 4 states have call predecessors, (13), 13 states have call successors, (13) [2024-11-09 06:08:20,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 850 states to 850 states and 912 transitions. [2024-11-09 06:08:20,156 INFO L78 Accepts]: Start accepts. Automaton has 850 states and 912 transitions. Word has length 6 [2024-11-09 06:08:20,156 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 06:08:20,156 INFO L471 AbstractCegarLoop]: Abstraction has 850 states and 912 transitions. [2024-11-09 06:08:20,157 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 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) [2024-11-09 06:08:20,157 INFO L276 IsEmpty]: Start isEmpty. Operand 850 states and 912 transitions. [2024-11-09 06:08:20,157 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2024-11-09 06:08:20,158 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 06:08:20,158 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2024-11-09 06:08:20,165 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a605240a-8277-4c40-807c-aac12981d3d0/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Ended with exit code 0 [2024-11-09 06:08:20,358 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a605240a-8277-4c40-807c-aac12981d3d0/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-09 06:08:20,359 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 422 more)] === [2024-11-09 06:08:20,360 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:08:20,360 INFO L85 PathProgramCache]: Analyzing trace with hash 1155791659, now seen corresponding path program 1 times [2024-11-09 06:08:20,361 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-09 06:08:20,361 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [28067835] [2024-11-09 06:08:20,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:08:20,361 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-09 06:08:20,362 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a605240a-8277-4c40-807c-aac12981d3d0/bin/utaipan-verify-YMUCfTKeje/mathsat [2024-11-09 06:08:20,363 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a605240a-8277-4c40-807c-aac12981d3d0/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-09 06:08:20,365 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a605240a-8277-4c40-807c-aac12981d3d0/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2024-11-09 06:08:20,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:08:20,489 INFO L255 TraceCheckSpWp]: Trace formula consists of 28 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-09 06:08:20,491 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 06:08:20,536 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2024-11-09 06:08:20,558 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 06:08:20,558 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 06:08:20,559 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-09 06:08:20,559 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [28067835] [2024-11-09 06:08:20,559 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [28067835] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 06:08:20,559 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 06:08:20,559 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 06:08:20,560 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1973399099] [2024-11-09 06:08:20,560 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 06:08:20,562 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 06:08:20,563 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-09 06:08:20,564 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 06:08:20,565 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 06:08:20,565 INFO L87 Difference]: Start difference. First operand 850 states and 912 transitions. Second operand has 3 states, 2 states have (on average 3.0) 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) [2024-11-09 06:08:22,642 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 06:08:22,643 INFO L93 Difference]: Finished difference Result 804 states and 868 transitions. [2024-11-09 06:08:22,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 06:08:22,645 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.0) 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 [2024-11-09 06:08:22,645 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 06:08:22,649 INFO L225 Difference]: With dead ends: 804 [2024-11-09 06:08:22,649 INFO L226 Difference]: Without dead ends: 804 [2024-11-09 06:08:22,650 INFO L431 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 [2024-11-09 06:08:22,651 INFO L432 NwaCegarLoop]: 556 mSDtfsCounter, 541 mSDsluCounter, 117 mSDsCounter, 0 mSdLazyCounter, 501 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 554 SdHoareTripleChecker+Valid, 673 SdHoareTripleChecker+Invalid, 554 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 501 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2024-11-09 06:08:22,651 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [554 Valid, 673 Invalid, 554 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 501 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2024-11-09 06:08:22,654 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 804 states. [2024-11-09 06:08:22,675 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 804 to 801. [2024-11-09 06:08:22,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 801 states, 418 states have (on average 2.0023923444976077) internal successors, (837), 795 states have internal predecessors, (837), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 4 states have call predecessors, (13), 13 states have call successors, (13) [2024-11-09 06:08:22,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 801 states to 801 states and 863 transitions. [2024-11-09 06:08:22,680 INFO L78 Accepts]: Start accepts. Automaton has 801 states and 863 transitions. Word has length 6 [2024-11-09 06:08:22,681 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 06:08:22,681 INFO L471 AbstractCegarLoop]: Abstraction has 801 states and 863 transitions. [2024-11-09 06:08:22,681 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.0) 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) [2024-11-09 06:08:22,681 INFO L276 IsEmpty]: Start isEmpty. Operand 801 states and 863 transitions. [2024-11-09 06:08:22,682 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2024-11-09 06:08:22,682 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 06:08:22,682 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2024-11-09 06:08:22,691 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a605240a-8277-4c40-807c-aac12981d3d0/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Ended with exit code 0 [2024-11-09 06:08:22,883 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a605240a-8277-4c40-807c-aac12981d3d0/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-09 06:08:22,883 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 422 more)] === [2024-11-09 06:08:22,884 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:08:22,884 INFO L85 PathProgramCache]: Analyzing trace with hash 1155791660, now seen corresponding path program 1 times [2024-11-09 06:08:22,884 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-09 06:08:22,885 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [832842820] [2024-11-09 06:08:22,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:08:22,885 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-09 06:08:22,885 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a605240a-8277-4c40-807c-aac12981d3d0/bin/utaipan-verify-YMUCfTKeje/mathsat [2024-11-09 06:08:22,888 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a605240a-8277-4c40-807c-aac12981d3d0/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-09 06:08:22,890 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a605240a-8277-4c40-807c-aac12981d3d0/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2024-11-09 06:08:22,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:08:22,985 INFO L255 TraceCheckSpWp]: Trace formula consists of 28 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-09 06:08:22,987 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 06:08:23,001 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-11-09 06:08:23,026 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 06:08:23,027 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 06:08:23,027 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-09 06:08:23,027 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [832842820] [2024-11-09 06:08:23,027 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [832842820] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 06:08:23,028 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 06:08:23,028 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 06:08:23,028 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1943338116] [2024-11-09 06:08:23,028 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 06:08:23,028 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 06:08:23,029 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-09 06:08:23,029 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 06:08:23,029 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 06:08:23,030 INFO L87 Difference]: Start difference. First operand 801 states and 863 transitions. Second operand has 3 states, 2 states have (on average 3.0) 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) [2024-11-09 06:08:25,438 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 06:08:25,438 INFO L93 Difference]: Finished difference Result 877 states and 944 transitions. [2024-11-09 06:08:25,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 06:08:25,440 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.0) 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 [2024-11-09 06:08:25,440 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 06:08:25,444 INFO L225 Difference]: With dead ends: 877 [2024-11-09 06:08:25,444 INFO L226 Difference]: Without dead ends: 877 [2024-11-09 06:08:25,444 INFO L431 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 [2024-11-09 06:08:25,445 INFO L432 NwaCegarLoop]: 737 mSDtfsCounter, 267 mSDsluCounter, 328 mSDsCounter, 0 mSdLazyCounter, 466 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 267 SdHoareTripleChecker+Valid, 1065 SdHoareTripleChecker+Invalid, 479 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 466 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2024-11-09 06:08:25,446 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [267 Valid, 1065 Invalid, 479 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 466 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2024-11-09 06:08:25,449 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 877 states. [2024-11-09 06:08:25,467 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 877 to 828. [2024-11-09 06:08:25,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 828 states, 455 states have (on average 1.9802197802197803) internal successors, (901), 822 states have internal predecessors, (901), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 4 states have call predecessors, (13), 13 states have call successors, (13) [2024-11-09 06:08:25,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 828 states to 828 states and 927 transitions. [2024-11-09 06:08:25,473 INFO L78 Accepts]: Start accepts. Automaton has 828 states and 927 transitions. Word has length 6 [2024-11-09 06:08:25,473 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 06:08:25,473 INFO L471 AbstractCegarLoop]: Abstraction has 828 states and 927 transitions. [2024-11-09 06:08:25,474 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.0) 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) [2024-11-09 06:08:25,474 INFO L276 IsEmpty]: Start isEmpty. Operand 828 states and 927 transitions. [2024-11-09 06:08:25,474 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2024-11-09 06:08:25,474 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 06:08:25,475 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-11-09 06:08:25,479 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a605240a-8277-4c40-807c-aac12981d3d0/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Ended with exit code 0 [2024-11-09 06:08:25,675 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a605240a-8277-4c40-807c-aac12981d3d0/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-09 06:08:25,675 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr312REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 422 more)] === [2024-11-09 06:08:25,676 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:08:25,676 INFO L85 PathProgramCache]: Analyzing trace with hash -1995012136, now seen corresponding path program 1 times [2024-11-09 06:08:25,677 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-09 06:08:25,677 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1966037468] [2024-11-09 06:08:25,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:08:25,677 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-09 06:08:25,677 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a605240a-8277-4c40-807c-aac12981d3d0/bin/utaipan-verify-YMUCfTKeje/mathsat [2024-11-09 06:08:25,681 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a605240a-8277-4c40-807c-aac12981d3d0/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-09 06:08:25,682 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a605240a-8277-4c40-807c-aac12981d3d0/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2024-11-09 06:08:25,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:08:25,775 INFO L255 TraceCheckSpWp]: Trace formula consists of 22 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-09 06:08:25,776 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 06:08:25,791 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 06:08:25,791 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 06:08:25,791 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-09 06:08:25,795 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1966037468] [2024-11-09 06:08:25,797 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1966037468] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 06:08:25,798 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 06:08:25,798 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 06:08:25,798 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1493613102] [2024-11-09 06:08:25,798 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 06:08:25,799 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 06:08:25,799 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-09 06:08:25,799 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 06:08:25,799 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 06:08:25,800 INFO L87 Difference]: Start difference. First operand 828 states and 927 transitions. Second operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 06:08:25,938 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 06:08:25,939 INFO L93 Difference]: Finished difference Result 1404 states and 1568 transitions. [2024-11-09 06:08:25,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 06:08:25,943 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2024-11-09 06:08:25,943 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 06:08:25,948 INFO L225 Difference]: With dead ends: 1404 [2024-11-09 06:08:25,949 INFO L226 Difference]: Without dead ends: 1404 [2024-11-09 06:08:25,949 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 06:08:25,950 INFO L432 NwaCegarLoop]: 848 mSDtfsCounter, 560 mSDsluCounter, 845 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 563 SdHoareTripleChecker+Valid, 1693 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 06:08:25,951 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [563 Valid, 1693 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 06:08:25,954 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1404 states. [2024-11-09 06:08:25,973 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1404 to 830. [2024-11-09 06:08:25,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 830 states, 457 states have (on average 1.9759299781181618) internal successors, (903), 824 states have internal predecessors, (903), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 4 states have call predecessors, (13), 13 states have call successors, (13) [2024-11-09 06:08:25,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 830 states to 830 states and 929 transitions. [2024-11-09 06:08:25,978 INFO L78 Accepts]: Start accepts. Automaton has 830 states and 929 transitions. Word has length 7 [2024-11-09 06:08:25,979 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 06:08:25,979 INFO L471 AbstractCegarLoop]: Abstraction has 830 states and 929 transitions. [2024-11-09 06:08:25,979 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 06:08:25,980 INFO L276 IsEmpty]: Start isEmpty. Operand 830 states and 929 transitions. [2024-11-09 06:08:25,980 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2024-11-09 06:08:25,980 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 06:08:25,980 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 06:08:25,985 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a605240a-8277-4c40-807c-aac12981d3d0/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2024-11-09 06:08:26,182 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a605240a-8277-4c40-807c-aac12981d3d0/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-09 06:08:26,183 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 422 more)] === [2024-11-09 06:08:26,183 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:08:26,184 INFO L85 PathProgramCache]: Analyzing trace with hash 1247697054, now seen corresponding path program 1 times [2024-11-09 06:08:26,184 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-09 06:08:26,185 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [394753461] [2024-11-09 06:08:26,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:08:26,185 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-09 06:08:26,185 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a605240a-8277-4c40-807c-aac12981d3d0/bin/utaipan-verify-YMUCfTKeje/mathsat [2024-11-09 06:08:26,188 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a605240a-8277-4c40-807c-aac12981d3d0/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-09 06:08:26,190 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a605240a-8277-4c40-807c-aac12981d3d0/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2024-11-09 06:08:26,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:08:26,329 INFO L255 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-09 06:08:26,331 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 06:08:26,346 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 06:08:26,346 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 06:08:26,346 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-09 06:08:26,347 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [394753461] [2024-11-09 06:08:26,347 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [394753461] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 06:08:26,347 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 06:08:26,347 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 06:08:26,347 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2064826483] [2024-11-09 06:08:26,348 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 06:08:26,348 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 06:08:26,348 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-09 06:08:26,348 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 06:08:26,349 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 06:08:26,349 INFO L87 Difference]: Start difference. First operand 830 states and 929 transitions. Second operand has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 06:08:26,394 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 06:08:26,394 INFO L93 Difference]: Finished difference Result 787 states and 884 transitions. [2024-11-09 06:08:26,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 06:08:26,395 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2024-11-09 06:08:26,395 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 06:08:26,398 INFO L225 Difference]: With dead ends: 787 [2024-11-09 06:08:26,398 INFO L226 Difference]: Without dead ends: 787 [2024-11-09 06:08:26,399 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 06:08:26,399 INFO L432 NwaCegarLoop]: 796 mSDtfsCounter, 71 mSDsluCounter, 733 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 71 SdHoareTripleChecker+Valid, 1529 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-09 06:08:26,400 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [71 Valid, 1529 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-09 06:08:26,401 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 787 states. [2024-11-09 06:08:26,413 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 787 to 787. [2024-11-09 06:08:26,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 787 states, 438 states have (on average 1.9589041095890412) internal successors, (858), 781 states have internal predecessors, (858), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 4 states have call predecessors, (13), 13 states have call successors, (13) [2024-11-09 06:08:26,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 787 states to 787 states and 884 transitions. [2024-11-09 06:08:26,418 INFO L78 Accepts]: Start accepts. Automaton has 787 states and 884 transitions. Word has length 13 [2024-11-09 06:08:26,418 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 06:08:26,418 INFO L471 AbstractCegarLoop]: Abstraction has 787 states and 884 transitions. [2024-11-09 06:08:26,419 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 06:08:26,419 INFO L276 IsEmpty]: Start isEmpty. Operand 787 states and 884 transitions. [2024-11-09 06:08:26,419 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2024-11-09 06:08:26,419 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 06:08:26,419 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 06:08:26,424 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a605240a-8277-4c40-807c-aac12981d3d0/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2024-11-09 06:08:26,620 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a605240a-8277-4c40-807c-aac12981d3d0/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-09 06:08:26,620 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr28REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 422 more)] === [2024-11-09 06:08:26,621 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:08:26,621 INFO L85 PathProgramCache]: Analyzing trace with hash 25685591, now seen corresponding path program 1 times [2024-11-09 06:08:26,621 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-09 06:08:26,621 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1147845075] [2024-11-09 06:08:26,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:08:26,622 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-09 06:08:26,622 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a605240a-8277-4c40-807c-aac12981d3d0/bin/utaipan-verify-YMUCfTKeje/mathsat [2024-11-09 06:08:26,628 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a605240a-8277-4c40-807c-aac12981d3d0/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-09 06:08:26,629 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a605240a-8277-4c40-807c-aac12981d3d0/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2024-11-09 06:08:26,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:08:26,824 INFO L255 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-09 06:08:26,826 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 06:08:26,863 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 06:08:26,863 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 06:08:26,863 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-09 06:08:26,864 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1147845075] [2024-11-09 06:08:26,864 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1147845075] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 06:08:26,864 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 06:08:26,864 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-09 06:08:26,864 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1527397669] [2024-11-09 06:08:26,865 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 06:08:26,865 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 06:08:26,865 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-09 06:08:26,866 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 06:08:26,866 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-09 06:08:26,866 INFO L87 Difference]: Start difference. First operand 787 states and 884 transitions. Second operand has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 06:08:27,006 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 06:08:27,006 INFO L93 Difference]: Finished difference Result 765 states and 855 transitions. [2024-11-09 06:08:27,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-09 06:08:27,007 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 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 14 [2024-11-09 06:08:27,008 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 06:08:27,012 INFO L225 Difference]: With dead ends: 765 [2024-11-09 06:08:27,012 INFO L226 Difference]: Without dead ends: 765 [2024-11-09 06:08:27,013 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-09 06:08:27,014 INFO L432 NwaCegarLoop]: 751 mSDtfsCounter, 48 mSDsluCounter, 1476 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 2227 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 06:08:27,015 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [48 Valid, 2227 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 06:08:27,017 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 765 states. [2024-11-09 06:08:27,035 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 765 to 765. [2024-11-09 06:08:27,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 765 states, 430 states have (on average 1.927906976744186) internal successors, (829), 759 states have internal predecessors, (829), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 4 states have call predecessors, (13), 13 states have call successors, (13) [2024-11-09 06:08:27,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 765 states to 765 states and 855 transitions. [2024-11-09 06:08:27,043 INFO L78 Accepts]: Start accepts. Automaton has 765 states and 855 transitions. Word has length 14 [2024-11-09 06:08:27,043 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 06:08:27,043 INFO L471 AbstractCegarLoop]: Abstraction has 765 states and 855 transitions. [2024-11-09 06:08:27,043 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 06:08:27,044 INFO L276 IsEmpty]: Start isEmpty. Operand 765 states and 855 transitions. [2024-11-09 06:08:27,044 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2024-11-09 06:08:27,045 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 06:08:27,046 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 06:08:27,050 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a605240a-8277-4c40-807c-aac12981d3d0/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Ended with exit code 0 [2024-11-09 06:08:27,246 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a605240a-8277-4c40-807c-aac12981d3d0/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-09 06:08:27,250 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr42REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 422 more)] === [2024-11-09 06:08:27,250 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:08:27,251 INFO L85 PathProgramCache]: Analyzing trace with hash 994337701, now seen corresponding path program 1 times [2024-11-09 06:08:27,251 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-09 06:08:27,251 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1699340576] [2024-11-09 06:08:27,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:08:27,251 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-09 06:08:27,252 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a605240a-8277-4c40-807c-aac12981d3d0/bin/utaipan-verify-YMUCfTKeje/mathsat [2024-11-09 06:08:27,253 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a605240a-8277-4c40-807c-aac12981d3d0/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-09 06:08:27,254 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a605240a-8277-4c40-807c-aac12981d3d0/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2024-11-09 06:08:27,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:08:27,457 INFO L255 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-09 06:08:27,460 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 06:08:27,468 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2024-11-09 06:08:27,595 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 06:08:27,595 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 06:08:27,596 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-09 06:08:27,596 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1699340576] [2024-11-09 06:08:27,596 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1699340576] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 06:08:27,596 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 06:08:27,597 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 06:08:27,597 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [298701289] [2024-11-09 06:08:27,597 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 06:08:27,597 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 06:08:27,598 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-09 06:08:27,598 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 06:08:27,598 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-09 06:08:27,599 INFO L87 Difference]: Start difference. First operand 765 states and 855 transitions. Second operand has 4 states, 3 states have (on average 9.333333333333334) internal successors, (28), 4 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 06:08:30,112 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 06:08:30,112 INFO L93 Difference]: Finished difference Result 765 states and 855 transitions. [2024-11-09 06:08:30,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 06:08:30,115 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 9.333333333333334) internal successors, (28), 4 states have internal predecessors, (28), 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 28 [2024-11-09 06:08:30,115 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 06:08:30,118 INFO L225 Difference]: With dead ends: 765 [2024-11-09 06:08:30,118 INFO L226 Difference]: Without dead ends: 765 [2024-11-09 06:08:30,119 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-09 06:08:30,120 INFO L432 NwaCegarLoop]: 507 mSDtfsCounter, 476 mSDsluCounter, 454 mSDsCounter, 0 mSdLazyCounter, 840 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 489 SdHoareTripleChecker+Valid, 961 SdHoareTripleChecker+Invalid, 848 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 840 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2024-11-09 06:08:30,121 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [489 Valid, 961 Invalid, 848 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 840 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2024-11-09 06:08:30,123 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 765 states. [2024-11-09 06:08:30,137 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 765 to 761. [2024-11-09 06:08:30,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 761 states, 430 states have (on average 1.9186046511627908) internal successors, (825), 755 states have internal predecessors, (825), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 4 states have call predecessors, (13), 13 states have call successors, (13) [2024-11-09 06:08:30,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 761 states to 761 states and 851 transitions. [2024-11-09 06:08:30,143 INFO L78 Accepts]: Start accepts. Automaton has 761 states and 851 transitions. Word has length 28 [2024-11-09 06:08:30,143 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 06:08:30,143 INFO L471 AbstractCegarLoop]: Abstraction has 761 states and 851 transitions. [2024-11-09 06:08:30,144 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 9.333333333333334) internal successors, (28), 4 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 06:08:30,144 INFO L276 IsEmpty]: Start isEmpty. Operand 761 states and 851 transitions. [2024-11-09 06:08:30,144 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2024-11-09 06:08:30,145 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 06:08:30,145 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 06:08:30,150 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a605240a-8277-4c40-807c-aac12981d3d0/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2024-11-09 06:08:30,348 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a605240a-8277-4c40-807c-aac12981d3d0/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-09 06:08:30,349 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr43REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 422 more)] === [2024-11-09 06:08:30,350 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:08:30,350 INFO L85 PathProgramCache]: Analyzing trace with hash 994337702, now seen corresponding path program 1 times [2024-11-09 06:08:30,351 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-09 06:08:30,351 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [640773705] [2024-11-09 06:08:30,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:08:30,351 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-09 06:08:30,352 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a605240a-8277-4c40-807c-aac12981d3d0/bin/utaipan-verify-YMUCfTKeje/mathsat [2024-11-09 06:08:30,355 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a605240a-8277-4c40-807c-aac12981d3d0/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-09 06:08:30,359 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a605240a-8277-4c40-807c-aac12981d3d0/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2024-11-09 06:08:30,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:08:30,568 INFO L255 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-09 06:08:30,571 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 06:08:30,591 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-11-09 06:08:30,933 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 06:08:30,934 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 06:08:30,934 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-09 06:08:30,934 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [640773705] [2024-11-09 06:08:30,935 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [640773705] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 06:08:30,935 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 06:08:30,935 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 06:08:30,935 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1178363411] [2024-11-09 06:08:30,935 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 06:08:30,936 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 06:08:30,936 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-09 06:08:30,937 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 06:08:30,937 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-09 06:08:30,937 INFO L87 Difference]: Start difference. First operand 761 states and 851 transitions. Second operand has 4 states, 3 states have (on average 9.333333333333334) internal successors, (28), 4 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 06:08:34,237 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 06:08:34,238 INFO L93 Difference]: Finished difference Result 810 states and 868 transitions. [2024-11-09 06:08:34,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 06:08:34,239 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 9.333333333333334) internal successors, (28), 4 states have internal predecessors, (28), 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 28 [2024-11-09 06:08:34,240 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 06:08:34,242 INFO L225 Difference]: With dead ends: 810 [2024-11-09 06:08:34,243 INFO L226 Difference]: Without dead ends: 810 [2024-11-09 06:08:34,243 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-09 06:08:34,244 INFO L432 NwaCegarLoop]: 688 mSDtfsCounter, 198 mSDsluCounter, 703 mSDsCounter, 0 mSdLazyCounter, 781 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 198 SdHoareTripleChecker+Valid, 1391 SdHoareTripleChecker+Invalid, 784 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 781 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2024-11-09 06:08:34,244 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [198 Valid, 1391 Invalid, 784 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 781 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2024-11-09 06:08:34,247 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 810 states. [2024-11-09 06:08:34,260 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 810 to 757. [2024-11-09 06:08:34,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 757 states, 430 states have (on average 1.9093023255813955) internal successors, (821), 751 states have internal predecessors, (821), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 4 states have call predecessors, (13), 13 states have call successors, (13) [2024-11-09 06:08:34,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 757 states to 757 states and 847 transitions. [2024-11-09 06:08:34,266 INFO L78 Accepts]: Start accepts. Automaton has 757 states and 847 transitions. Word has length 28 [2024-11-09 06:08:34,266 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 06:08:34,266 INFO L471 AbstractCegarLoop]: Abstraction has 757 states and 847 transitions. [2024-11-09 06:08:34,267 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 9.333333333333334) internal successors, (28), 4 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 06:08:34,267 INFO L276 IsEmpty]: Start isEmpty. Operand 757 states and 847 transitions. [2024-11-09 06:08:34,268 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2024-11-09 06:08:34,268 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 06:08:34,269 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 06:08:34,274 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a605240a-8277-4c40-807c-aac12981d3d0/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2024-11-09 06:08:34,469 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a605240a-8277-4c40-807c-aac12981d3d0/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-09 06:08:34,470 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr108REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 422 more)] === [2024-11-09 06:08:34,470 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:08:34,471 INFO L85 PathProgramCache]: Analyzing trace with hash -2065339650, now seen corresponding path program 1 times [2024-11-09 06:08:34,471 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-09 06:08:34,472 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1204435378] [2024-11-09 06:08:34,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:08:34,472 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-09 06:08:34,472 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a605240a-8277-4c40-807c-aac12981d3d0/bin/utaipan-verify-YMUCfTKeje/mathsat [2024-11-09 06:08:34,476 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a605240a-8277-4c40-807c-aac12981d3d0/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-09 06:08:34,478 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a605240a-8277-4c40-807c-aac12981d3d0/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2024-11-09 06:08:34,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:08:34,741 INFO L255 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-09 06:08:34,743 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 06:08:34,834 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 06:08:34,835 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 06:08:34,835 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-09 06:08:34,835 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1204435378] [2024-11-09 06:08:34,835 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1204435378] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 06:08:34,835 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 06:08:34,836 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-09 06:08:34,836 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2130871267] [2024-11-09 06:08:34,836 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 06:08:34,836 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 06:08:34,836 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-09 06:08:34,841 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 06:08:34,841 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-09 06:08:34,841 INFO L87 Difference]: Start difference. First operand 757 states and 847 transitions. Second operand has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 06:08:34,939 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 06:08:34,940 INFO L93 Difference]: Finished difference Result 751 states and 837 transitions. [2024-11-09 06:08:34,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-09 06:08:34,940 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 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 44 [2024-11-09 06:08:34,941 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 06:08:34,943 INFO L225 Difference]: With dead ends: 751 [2024-11-09 06:08:34,944 INFO L226 Difference]: Without dead ends: 751 [2024-11-09 06:08:34,944 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-09 06:08:34,945 INFO L432 NwaCegarLoop]: 745 mSDtfsCounter, 21 mSDsluCounter, 1459 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 2204 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 06:08:34,946 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 2204 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 06:08:34,948 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 751 states. [2024-11-09 06:08:34,960 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 751 to 751. [2024-11-09 06:08:34,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 751 states, 424 states have (on average 1.9127358490566038) internal successors, (811), 745 states have internal predecessors, (811), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 4 states have call predecessors, (13), 13 states have call successors, (13) [2024-11-09 06:08:34,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 751 states to 751 states and 837 transitions. [2024-11-09 06:08:34,966 INFO L78 Accepts]: Start accepts. Automaton has 751 states and 837 transitions. Word has length 44 [2024-11-09 06:08:34,966 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 06:08:34,966 INFO L471 AbstractCegarLoop]: Abstraction has 751 states and 837 transitions. [2024-11-09 06:08:34,966 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 06:08:34,967 INFO L276 IsEmpty]: Start isEmpty. Operand 751 states and 837 transitions. [2024-11-09 06:08:34,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2024-11-09 06:08:34,968 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 06:08:34,968 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 06:08:34,977 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a605240a-8277-4c40-807c-aac12981d3d0/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Ended with exit code 0 [2024-11-09 06:08:35,169 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a605240a-8277-4c40-807c-aac12981d3d0/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-09 06:08:35,169 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr108REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 422 more)] === [2024-11-09 06:08:35,169 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:08:35,170 INFO L85 PathProgramCache]: Analyzing trace with hash 1492340938, now seen corresponding path program 1 times [2024-11-09 06:08:35,170 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-09 06:08:35,170 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1839351477] [2024-11-09 06:08:35,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:08:35,171 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-09 06:08:35,171 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a605240a-8277-4c40-807c-aac12981d3d0/bin/utaipan-verify-YMUCfTKeje/mathsat [2024-11-09 06:08:35,172 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a605240a-8277-4c40-807c-aac12981d3d0/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-09 06:08:35,174 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a605240a-8277-4c40-807c-aac12981d3d0/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2024-11-09 06:08:35,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:08:35,476 INFO L255 TraceCheckSpWp]: Trace formula consists of 194 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-09 06:08:35,479 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 06:08:35,914 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 06:08:35,914 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 06:08:35,915 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-09 06:08:35,915 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1839351477] [2024-11-09 06:08:35,915 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1839351477] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 06:08:35,915 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 06:08:35,915 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 06:08:35,915 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1029057629] [2024-11-09 06:08:35,915 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 06:08:35,916 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 06:08:35,916 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-09 06:08:35,916 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 06:08:35,916 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 06:08:35,917 INFO L87 Difference]: Start difference. First operand 751 states and 837 transitions. Second operand has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 06:08:36,266 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 06:08:36,267 INFO L93 Difference]: Finished difference Result 969 states and 1085 transitions. [2024-11-09 06:08:36,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 06:08:36,268 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 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 52 [2024-11-09 06:08:36,269 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 06:08:36,273 INFO L225 Difference]: With dead ends: 969 [2024-11-09 06:08:36,273 INFO L226 Difference]: Without dead ends: 969 [2024-11-09 06:08:36,273 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 06:08:36,274 INFO L432 NwaCegarLoop]: 832 mSDtfsCounter, 179 mSDsluCounter, 694 mSDsCounter, 0 mSdLazyCounter, 103 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 179 SdHoareTripleChecker+Valid, 1526 SdHoareTripleChecker+Invalid, 105 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 103 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-09 06:08:36,275 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [179 Valid, 1526 Invalid, 105 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 103 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-09 06:08:36,277 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 969 states. [2024-11-09 06:08:36,291 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 969 to 798. [2024-11-09 06:08:36,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 798 states, 471 states have (on average 1.821656050955414) internal successors, (858), 792 states have internal predecessors, (858), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 4 states have call predecessors, (13), 13 states have call successors, (13) [2024-11-09 06:08:36,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 798 states to 798 states and 884 transitions. [2024-11-09 06:08:36,297 INFO L78 Accepts]: Start accepts. Automaton has 798 states and 884 transitions. Word has length 52 [2024-11-09 06:08:36,297 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 06:08:36,298 INFO L471 AbstractCegarLoop]: Abstraction has 798 states and 884 transitions. [2024-11-09 06:08:36,298 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 06:08:36,298 INFO L276 IsEmpty]: Start isEmpty. Operand 798 states and 884 transitions. [2024-11-09 06:08:36,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2024-11-09 06:08:36,299 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 06:08:36,299 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 06:08:36,306 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a605240a-8277-4c40-807c-aac12981d3d0/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2024-11-09 06:08:36,500 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a605240a-8277-4c40-807c-aac12981d3d0/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-09 06:08:36,500 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr61REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 422 more)] === [2024-11-09 06:08:36,501 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:08:36,501 INFO L85 PathProgramCache]: Analyzing trace with hash 1014889515, now seen corresponding path program 1 times [2024-11-09 06:08:36,503 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-09 06:08:36,503 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1313099351] [2024-11-09 06:08:36,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:08:36,504 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-09 06:08:36,504 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a605240a-8277-4c40-807c-aac12981d3d0/bin/utaipan-verify-YMUCfTKeje/mathsat [2024-11-09 06:08:36,508 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a605240a-8277-4c40-807c-aac12981d3d0/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-09 06:08:36,509 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a605240a-8277-4c40-807c-aac12981d3d0/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2024-11-09 06:08:36,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:08:36,907 INFO L255 TraceCheckSpWp]: Trace formula consists of 229 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-09 06:08:36,910 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 06:08:36,925 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-11-09 06:08:36,953 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2024-11-09 06:08:37,982 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 06:08:37,984 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 9 [2024-11-09 06:08:38,016 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-11-09 06:08:38,016 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2024-11-09 06:08:38,037 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 06:08:38,038 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 06:08:38,038 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-09 06:08:38,038 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1313099351] [2024-11-09 06:08:38,038 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1313099351] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 06:08:38,039 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 06:08:38,039 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 06:08:38,039 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [505457156] [2024-11-09 06:08:38,039 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 06:08:38,040 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 06:08:38,040 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-09 06:08:38,040 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 06:08:38,041 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-09 06:08:38,041 INFO L87 Difference]: Start difference. First operand 798 states and 884 transitions. Second operand has 4 states, 3 states have (on average 18.333333333333332) internal successors, (55), 4 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 06:08:40,664 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 06:08:40,664 INFO L93 Difference]: Finished difference Result 760 states and 846 transitions. [2024-11-09 06:08:40,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 06:08:40,667 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 18.333333333333332) internal successors, (55), 4 states have internal predecessors, (55), 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 55 [2024-11-09 06:08:40,667 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 06:08:40,670 INFO L225 Difference]: With dead ends: 760 [2024-11-09 06:08:40,671 INFO L226 Difference]: Without dead ends: 760 [2024-11-09 06:08:40,671 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-09 06:08:40,672 INFO L432 NwaCegarLoop]: 423 mSDtfsCounter, 756 mSDsluCounter, 161 mSDsCounter, 0 mSdLazyCounter, 431 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 759 SdHoareTripleChecker+Valid, 584 SdHoareTripleChecker+Invalid, 477 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 431 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2024-11-09 06:08:40,673 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [759 Valid, 584 Invalid, 477 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 431 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2024-11-09 06:08:40,675 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 760 states. [2024-11-09 06:08:40,688 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 760 to 723. [2024-11-09 06:08:40,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 723 states, 434 states have (on average 1.7188940092165899) internal successors, (746), 717 states have internal predecessors, (746), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 4 states have call predecessors, (13), 13 states have call successors, (13) [2024-11-09 06:08:40,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 723 states to 723 states and 772 transitions. [2024-11-09 06:08:40,694 INFO L78 Accepts]: Start accepts. Automaton has 723 states and 772 transitions. Word has length 55 [2024-11-09 06:08:40,695 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 06:08:40,695 INFO L471 AbstractCegarLoop]: Abstraction has 723 states and 772 transitions. [2024-11-09 06:08:40,695 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 18.333333333333332) internal successors, (55), 4 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 06:08:40,696 INFO L276 IsEmpty]: Start isEmpty. Operand 723 states and 772 transitions. [2024-11-09 06:08:40,698 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2024-11-09 06:08:40,698 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 06:08:40,699 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 06:08:40,708 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a605240a-8277-4c40-807c-aac12981d3d0/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Ended with exit code 0 [2024-11-09 06:08:40,900 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a605240a-8277-4c40-807c-aac12981d3d0/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-09 06:08:40,900 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr66REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 422 more)] === [2024-11-09 06:08:40,901 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:08:40,901 INFO L85 PathProgramCache]: Analyzing trace with hash 1692476316, now seen corresponding path program 1 times [2024-11-09 06:08:40,902 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-09 06:08:40,902 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [224059677] [2024-11-09 06:08:40,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:08:40,902 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-09 06:08:40,902 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a605240a-8277-4c40-807c-aac12981d3d0/bin/utaipan-verify-YMUCfTKeje/mathsat [2024-11-09 06:08:40,906 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a605240a-8277-4c40-807c-aac12981d3d0/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-09 06:08:40,908 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a605240a-8277-4c40-807c-aac12981d3d0/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2024-11-09 06:08:41,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:08:41,229 INFO L255 TraceCheckSpWp]: Trace formula consists of 256 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-09 06:08:41,233 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 06:08:41,249 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2024-11-09 06:08:41,272 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2024-11-09 06:08:41,318 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2024-11-09 06:08:41,342 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 06:08:41,343 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 06:08:41,343 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-09 06:08:41,343 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [224059677] [2024-11-09 06:08:41,344 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [224059677] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 06:08:41,344 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 06:08:41,344 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-09 06:08:41,344 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [547977704] [2024-11-09 06:08:41,345 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 06:08:41,345 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-09 06:08:41,345 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-09 06:08:41,346 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-09 06:08:41,346 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-09 06:08:41,347 INFO L87 Difference]: Start difference. First operand 723 states and 772 transitions. Second operand has 5 states, 4 states have (on average 15.0) internal successors, (60), 5 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 06:08:44,482 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 06:08:44,483 INFO L93 Difference]: Finished difference Result 722 states and 771 transitions. [2024-11-09 06:08:44,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-09 06:08:44,485 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 15.0) internal successors, (60), 5 states have internal predecessors, (60), 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 60 [2024-11-09 06:08:44,486 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 06:08:44,489 INFO L225 Difference]: With dead ends: 722 [2024-11-09 06:08:44,490 INFO L226 Difference]: Without dead ends: 722 [2024-11-09 06:08:44,490 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-09 06:08:44,491 INFO L432 NwaCegarLoop]: 718 mSDtfsCounter, 2 mSDsluCounter, 1149 mSDsCounter, 0 mSdLazyCounter, 1012 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 1867 SdHoareTripleChecker+Invalid, 1013 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1012 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2024-11-09 06:08:44,492 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 1867 Invalid, 1013 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1012 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2024-11-09 06:08:44,494 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 722 states. [2024-11-09 06:08:44,510 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 722 to 722. [2024-11-09 06:08:44,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 722 states, 434 states have (on average 1.7165898617511521) internal successors, (745), 716 states have internal predecessors, (745), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 4 states have call predecessors, (13), 13 states have call successors, (13) [2024-11-09 06:08:44,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 722 states to 722 states and 771 transitions. [2024-11-09 06:08:44,515 INFO L78 Accepts]: Start accepts. Automaton has 722 states and 771 transitions. Word has length 60 [2024-11-09 06:08:44,515 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 06:08:44,516 INFO L471 AbstractCegarLoop]: Abstraction has 722 states and 771 transitions. [2024-11-09 06:08:44,516 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 15.0) internal successors, (60), 5 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 06:08:44,516 INFO L276 IsEmpty]: Start isEmpty. Operand 722 states and 771 transitions. [2024-11-09 06:08:44,517 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2024-11-09 06:08:44,517 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 06:08:44,517 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 06:08:44,527 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a605240a-8277-4c40-807c-aac12981d3d0/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Ended with exit code 0 [2024-11-09 06:08:44,718 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a605240a-8277-4c40-807c-aac12981d3d0/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-09 06:08:44,718 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr67REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 422 more)] === [2024-11-09 06:08:44,719 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:08:44,719 INFO L85 PathProgramCache]: Analyzing trace with hash 1692476317, now seen corresponding path program 1 times [2024-11-09 06:08:44,719 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-09 06:08:44,720 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1342077075] [2024-11-09 06:08:44,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:08:44,720 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-09 06:08:44,720 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a605240a-8277-4c40-807c-aac12981d3d0/bin/utaipan-verify-YMUCfTKeje/mathsat [2024-11-09 06:08:44,721 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a605240a-8277-4c40-807c-aac12981d3d0/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-09 06:08:44,724 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a605240a-8277-4c40-807c-aac12981d3d0/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2024-11-09 06:08:45,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:08:45,021 INFO L255 TraceCheckSpWp]: Trace formula consists of 256 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-11-09 06:08:45,025 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 06:08:45,037 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-11-09 06:08:45,073 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2024-11-09 06:08:45,082 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2024-11-09 06:08:45,171 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 9 [2024-11-09 06:08:45,202 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 06:08:45,202 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 06:08:45,202 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-09 06:08:45,202 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1342077075] [2024-11-09 06:08:45,202 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1342077075] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 06:08:45,202 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 06:08:45,203 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-09 06:08:45,203 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [73076630] [2024-11-09 06:08:45,203 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 06:08:45,203 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-09 06:08:45,204 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-09 06:08:45,204 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-09 06:08:45,204 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-09 06:08:45,205 INFO L87 Difference]: Start difference. First operand 722 states and 771 transitions. Second operand has 5 states, 4 states have (on average 15.0) internal successors, (60), 5 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 06:08:48,641 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 06:08:48,642 INFO L93 Difference]: Finished difference Result 721 states and 770 transitions. [2024-11-09 06:08:48,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-09 06:08:48,644 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 15.0) internal successors, (60), 5 states have internal predecessors, (60), 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 60 [2024-11-09 06:08:48,645 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 06:08:48,647 INFO L225 Difference]: With dead ends: 721 [2024-11-09 06:08:48,648 INFO L226 Difference]: Without dead ends: 721 [2024-11-09 06:08:48,648 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-09 06:08:48,649 INFO L432 NwaCegarLoop]: 718 mSDtfsCounter, 1 mSDsluCounter, 1172 mSDsCounter, 0 mSdLazyCounter, 986 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 1890 SdHoareTripleChecker+Invalid, 987 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 986 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2024-11-09 06:08:48,650 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 1890 Invalid, 987 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 986 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time] [2024-11-09 06:08:48,652 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 721 states. [2024-11-09 06:08:48,664 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 721 to 721. [2024-11-09 06:08:48,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 721 states, 433 states have (on average 1.71824480369515) internal successors, (744), 715 states have internal predecessors, (744), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 4 states have call predecessors, (13), 13 states have call successors, (13) [2024-11-09 06:08:48,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 721 states to 721 states and 770 transitions. [2024-11-09 06:08:48,669 INFO L78 Accepts]: Start accepts. Automaton has 721 states and 770 transitions. Word has length 60 [2024-11-09 06:08:48,669 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 06:08:48,669 INFO L471 AbstractCegarLoop]: Abstraction has 721 states and 770 transitions. [2024-11-09 06:08:48,670 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 15.0) internal successors, (60), 5 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 06:08:48,670 INFO L276 IsEmpty]: Start isEmpty. Operand 721 states and 770 transitions. [2024-11-09 06:08:48,671 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2024-11-09 06:08:48,671 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 06:08:48,671 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 06:08:48,679 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a605240a-8277-4c40-807c-aac12981d3d0/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Ended with exit code 0 [2024-11-09 06:08:48,872 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a605240a-8277-4c40-807c-aac12981d3d0/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-09 06:08:48,872 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr70REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 422 more)] === [2024-11-09 06:08:48,873 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:08:48,873 INFO L85 PathProgramCache]: Analyzing trace with hash -962962749, now seen corresponding path program 1 times [2024-11-09 06:08:48,874 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-09 06:08:48,874 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1209601615] [2024-11-09 06:08:48,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:08:48,875 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-09 06:08:48,875 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a605240a-8277-4c40-807c-aac12981d3d0/bin/utaipan-verify-YMUCfTKeje/mathsat [2024-11-09 06:08:48,878 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a605240a-8277-4c40-807c-aac12981d3d0/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-09 06:08:48,882 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a605240a-8277-4c40-807c-aac12981d3d0/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2024-11-09 06:08:49,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:08:49,208 INFO L255 TraceCheckSpWp]: Trace formula consists of 282 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-09 06:08:49,211 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 06:08:49,241 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 06:08:49,241 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 06:08:49,241 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-09 06:08:49,242 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1209601615] [2024-11-09 06:08:49,242 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1209601615] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 06:08:49,242 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 06:08:49,242 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-09 06:08:49,243 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1885551459] [2024-11-09 06:08:49,243 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 06:08:49,243 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 06:08:49,244 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-09 06:08:49,245 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 06:08:49,245 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-09 06:08:49,246 INFO L87 Difference]: Start difference. First operand 721 states and 770 transitions. Second operand has 4 states, 4 states have (on average 16.5) internal successors, (66), 4 states have internal predecessors, (66), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-09 06:08:49,302 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 06:08:49,302 INFO L93 Difference]: Finished difference Result 724 states and 774 transitions. [2024-11-09 06:08:49,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 06:08:49,303 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.5) internal successors, (66), 4 states have internal predecessors, (66), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 68 [2024-11-09 06:08:49,303 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 06:08:49,306 INFO L225 Difference]: With dead ends: 724 [2024-11-09 06:08:49,307 INFO L226 Difference]: Without dead ends: 724 [2024-11-09 06:08:49,307 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 65 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-09 06:08:49,308 INFO L432 NwaCegarLoop]: 718 mSDtfsCounter, 0 mSDsluCounter, 1431 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 2149 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-09 06:08:49,308 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 2149 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-09 06:08:49,310 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 724 states. [2024-11-09 06:08:49,329 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 724 to 724. [2024-11-09 06:08:49,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 724 states, 435 states have (on average 1.717241379310345) internal successors, (747), 718 states have internal predecessors, (747), 13 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (14), 4 states have call predecessors, (14), 13 states have call successors, (14) [2024-11-09 06:08:49,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 724 states to 724 states and 774 transitions. [2024-11-09 06:08:49,334 INFO L78 Accepts]: Start accepts. Automaton has 724 states and 774 transitions. Word has length 68 [2024-11-09 06:08:49,334 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 06:08:49,335 INFO L471 AbstractCegarLoop]: Abstraction has 724 states and 774 transitions. [2024-11-09 06:08:49,335 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.5) internal successors, (66), 4 states have internal predecessors, (66), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-09 06:08:49,335 INFO L276 IsEmpty]: Start isEmpty. Operand 724 states and 774 transitions. [2024-11-09 06:08:49,337 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2024-11-09 06:08:49,337 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 06:08:49,337 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 06:08:49,346 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a605240a-8277-4c40-807c-aac12981d3d0/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2024-11-09 06:08:49,538 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a605240a-8277-4c40-807c-aac12981d3d0/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-09 06:08:49,538 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr70REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 422 more)] === [2024-11-09 06:08:49,539 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:08:49,539 INFO L85 PathProgramCache]: Analyzing trace with hash 1548096934, now seen corresponding path program 1 times [2024-11-09 06:08:49,539 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-09 06:08:49,540 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1073769430] [2024-11-09 06:08:49,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:08:49,540 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-09 06:08:49,541 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a605240a-8277-4c40-807c-aac12981d3d0/bin/utaipan-verify-YMUCfTKeje/mathsat [2024-11-09 06:08:49,542 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a605240a-8277-4c40-807c-aac12981d3d0/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-09 06:08:49,544 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a605240a-8277-4c40-807c-aac12981d3d0/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2024-11-09 06:08:49,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:08:49,913 INFO L255 TraceCheckSpWp]: Trace formula consists of 293 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-09 06:08:49,916 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 06:08:49,967 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 06:08:49,968 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 06:08:50,074 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 06:08:50,078 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-09 06:08:50,078 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1073769430] [2024-11-09 06:08:50,078 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1073769430] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 06:08:50,078 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1689010747] [2024-11-09 06:08:50,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:08:50,082 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-09 06:08:50,082 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a605240a-8277-4c40-807c-aac12981d3d0/bin/utaipan-verify-YMUCfTKeje/cvc4 [2024-11-09 06:08:50,088 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a605240a-8277-4c40-807c-aac12981d3d0/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-09 06:08:50,091 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a605240a-8277-4c40-807c-aac12981d3d0/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt (17)] Waiting until timeout for monitored process [2024-11-09 06:08:50,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:08:50,590 INFO L255 TraceCheckSpWp]: Trace formula consists of 293 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-09 06:08:50,592 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 06:08:50,609 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 06:08:50,609 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 06:08:50,642 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 06:08:50,642 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1689010747] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 06:08:50,642 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2012791898] [2024-11-09 06:08:50,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:08:50,643 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 06:08:50,643 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a605240a-8277-4c40-807c-aac12981d3d0/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 06:08:50,644 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a605240a-8277-4c40-807c-aac12981d3d0/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 06:08:50,646 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a605240a-8277-4c40-807c-aac12981d3d0/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-11-09 06:08:50,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:08:50,904 INFO L255 TraceCheckSpWp]: Trace formula consists of 293 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-09 06:08:50,906 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 06:08:50,923 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 06:08:50,923 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 06:08:50,967 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 06:08:50,967 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2012791898] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 06:08:50,967 INFO L185 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2024-11-09 06:08:50,968 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5, 5, 5, 5] total 8 [2024-11-09 06:08:50,968 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [812608345] [2024-11-09 06:08:50,968 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2024-11-09 06:08:50,969 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-09 06:08:50,969 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-09 06:08:50,970 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-09 06:08:50,970 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2024-11-09 06:08:50,971 INFO L87 Difference]: Start difference. First operand 724 states and 774 transitions. Second operand has 8 states, 8 states have (on average 8.875) internal successors, (71), 8 states have internal predecessors, (71), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-09 06:08:51,208 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 06:08:51,208 INFO L93 Difference]: Finished difference Result 736 states and 791 transitions. [2024-11-09 06:08:51,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-09 06:08:51,210 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 8.875) internal successors, (71), 8 states have internal predecessors, (71), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 69 [2024-11-09 06:08:51,210 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 06:08:51,213 INFO L225 Difference]: With dead ends: 736 [2024-11-09 06:08:51,213 INFO L226 Difference]: Without dead ends: 736 [2024-11-09 06:08:51,214 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 411 GetRequests, 402 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=44, Invalid=66, Unknown=0, NotChecked=0, Total=110 [2024-11-09 06:08:51,214 INFO L432 NwaCegarLoop]: 718 mSDtfsCounter, 8 mSDsluCounter, 1434 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 2152 SdHoareTripleChecker+Invalid, 61 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-09 06:08:51,215 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 2152 Invalid, 61 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-09 06:08:51,216 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 736 states. [2024-11-09 06:08:51,228 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 736 to 734. [2024-11-09 06:08:51,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 734 states, 444 states have (on average 1.7162162162162162) internal successors, (762), 727 states have internal predecessors, (762), 13 states have call successors, (13), 3 states have call predecessors, (13), 4 states have return successors, (14), 4 states have call predecessors, (14), 13 states have call successors, (14) [2024-11-09 06:08:51,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 734 states to 734 states and 789 transitions. [2024-11-09 06:08:51,232 INFO L78 Accepts]: Start accepts. Automaton has 734 states and 789 transitions. Word has length 69 [2024-11-09 06:08:51,232 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 06:08:51,232 INFO L471 AbstractCegarLoop]: Abstraction has 734 states and 789 transitions. [2024-11-09 06:08:51,233 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.875) internal successors, (71), 8 states have internal predecessors, (71), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-09 06:08:51,233 INFO L276 IsEmpty]: Start isEmpty. Operand 734 states and 789 transitions. [2024-11-09 06:08:51,233 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2024-11-09 06:08:51,233 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 06:08:51,234 INFO L215 NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 06:08:51,240 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a605240a-8277-4c40-807c-aac12981d3d0/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt (17)] Forceful destruction successful, exit code 0 [2024-11-09 06:08:51,463 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a605240a-8277-4c40-807c-aac12981d3d0/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2024-11-09 06:08:51,640 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a605240a-8277-4c40-807c-aac12981d3d0/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2024-11-09 06:08:51,835 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a605240a-8277-4c40-807c-aac12981d3d0/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt,18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a605240a-8277-4c40-807c-aac12981d3d0/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true,16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a605240a-8277-4c40-807c-aac12981d3d0/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-09 06:08:51,835 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr70REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 422 more)] === [2024-11-09 06:08:51,836 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:08:51,836 INFO L85 PathProgramCache]: Analyzing trace with hash -1323074685, now seen corresponding path program 2 times [2024-11-09 06:08:51,836 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-09 06:08:51,837 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1188631917] [2024-11-09 06:08:51,837 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-09 06:08:51,837 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-09 06:08:51,837 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a605240a-8277-4c40-807c-aac12981d3d0/bin/utaipan-verify-YMUCfTKeje/mathsat [2024-11-09 06:08:51,838 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a605240a-8277-4c40-807c-aac12981d3d0/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-09 06:08:51,840 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a605240a-8277-4c40-807c-aac12981d3d0/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2024-11-09 06:08:52,463 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-09 06:08:52,463 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 06:08:52,478 INFO L255 TraceCheckSpWp]: Trace formula consists of 326 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-09 06:08:52,480 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 06:08:52,665 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 06:08:52,666 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 06:08:53,094 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 06:08:53,094 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-09 06:08:53,094 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1188631917] [2024-11-09 06:08:53,095 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1188631917] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 06:08:53,095 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1945747607] [2024-11-09 06:08:53,095 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-09 06:08:53,095 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-09 06:08:53,096 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a605240a-8277-4c40-807c-aac12981d3d0/bin/utaipan-verify-YMUCfTKeje/cvc4 [2024-11-09 06:08:53,099 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a605240a-8277-4c40-807c-aac12981d3d0/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-09 06:08:53,101 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a605240a-8277-4c40-807c-aac12981d3d0/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt (20)] Waiting until timeout for monitored process [2024-11-09 06:08:54,625 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-09 06:08:54,625 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 06:08:54,638 INFO L255 TraceCheckSpWp]: Trace formula consists of 326 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-09 06:08:54,640 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 06:08:54,697 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 06:08:54,697 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 06:08:54,842 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 06:08:54,843 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1945747607] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 06:08:54,843 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [410546717] [2024-11-09 06:08:54,844 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-09 06:08:54,846 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 06:08:54,846 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a605240a-8277-4c40-807c-aac12981d3d0/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 06:08:54,851 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a605240a-8277-4c40-807c-aac12981d3d0/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 06:08:54,853 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a605240a-8277-4c40-807c-aac12981d3d0/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2024-11-09 06:09:17,868 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-09 06:09:17,868 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 06:09:17,885 INFO L255 TraceCheckSpWp]: Trace formula consists of 326 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-09 06:09:17,889 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 06:09:17,897 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2024-11-09 06:09:18,099 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-11-09 06:09:18,100 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2024-11-09 06:09:18,156 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2024-11-09 06:09:18,561 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-09 06:09:18,562 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 44 treesize of output 43 [2024-11-09 06:09:18,656 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 15 [2024-11-09 06:09:18,719 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-09 06:09:18,720 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 06:09:18,889 INFO L349 Elim1Store]: treesize reduction 7, result has 63.2 percent of original size [2024-11-09 06:09:18,889 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 24 [2024-11-09 06:09:19,047 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [410546717] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 06:09:19,047 INFO L185 FreeRefinementEngine]: Found 0 perfect and 5 imperfect interpolant sequences. [2024-11-09 06:09:19,047 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8, 8, 10] total 23 [2024-11-09 06:09:19,048 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [668463563] [2024-11-09 06:09:19,048 INFO L85 oduleStraightlineAll]: Using 5 imperfect interpolants to construct interpolant automaton [2024-11-09 06:09:19,048 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-11-09 06:09:19,049 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-09 06:09:19,049 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-11-09 06:09:19,050 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=504, Unknown=7, NotChecked=0, Total=600 [2024-11-09 06:09:19,050 INFO L87 Difference]: Start difference. First operand 734 states and 789 transitions. Second operand has 23 states, 22 states have (on average 6.454545454545454) internal successors, (142), 22 states have internal predecessors, (142), 2 states have call successors, (2), 2 states have call predecessors, (2), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-09 06:09:30,114 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 06:09:30,114 INFO L93 Difference]: Finished difference Result 750 states and 811 transitions. [2024-11-09 06:09:30,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2024-11-09 06:09:30,115 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 22 states have (on average 6.454545454545454) internal successors, (142), 22 states have internal predecessors, (142), 2 states have call successors, (2), 2 states have call predecessors, (2), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 72 [2024-11-09 06:09:30,115 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 06:09:30,118 INFO L225 Difference]: With dead ends: 750 [2024-11-09 06:09:30,118 INFO L226 Difference]: Without dead ends: 744 [2024-11-09 06:09:30,119 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 385 GetRequests, 337 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 434 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=389, Invalid=2053, Unknown=8, NotChecked=0, Total=2450 [2024-11-09 06:09:30,120 INFO L432 NwaCegarLoop]: 489 mSDtfsCounter, 418 mSDsluCounter, 4811 mSDsCounter, 0 mSdLazyCounter, 3882 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 431 SdHoareTripleChecker+Valid, 5300 SdHoareTripleChecker+Invalid, 3910 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 3882 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.5s IncrementalHoareTripleChecker+Time [2024-11-09 06:09:30,120 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [431 Valid, 5300 Invalid, 3910 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [28 Valid, 3882 Invalid, 0 Unknown, 0 Unchecked, 9.5s Time] [2024-11-09 06:09:30,122 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 744 states. [2024-11-09 06:09:30,133 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 744 to 742. [2024-11-09 06:09:30,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 742 states, 453 states have (on average 1.7041942604856513) internal successors, (772), 735 states have internal predecessors, (772), 13 states have call successors, (13), 3 states have call predecessors, (13), 4 states have return successors, (14), 4 states have call predecessors, (14), 13 states have call successors, (14) [2024-11-09 06:09:30,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 742 states to 742 states and 799 transitions. [2024-11-09 06:09:30,138 INFO L78 Accepts]: Start accepts. Automaton has 742 states and 799 transitions. Word has length 72 [2024-11-09 06:09:30,138 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 06:09:30,138 INFO L471 AbstractCegarLoop]: Abstraction has 742 states and 799 transitions. [2024-11-09 06:09:30,138 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 22 states have (on average 6.454545454545454) internal successors, (142), 22 states have internal predecessors, (142), 2 states have call successors, (2), 2 states have call predecessors, (2), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-09 06:09:30,139 INFO L276 IsEmpty]: Start isEmpty. Operand 742 states and 799 transitions. [2024-11-09 06:09:30,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2024-11-09 06:09:30,140 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 06:09:30,140 INFO L215 NwaCegarLoop]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 06:09:30,150 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a605240a-8277-4c40-807c-aac12981d3d0/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (19)] Ended with exit code 0 [2024-11-09 06:09:30,346 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a605240a-8277-4c40-807c-aac12981d3d0/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt (20)] Forceful destruction successful, exit code 0 [2024-11-09 06:09:30,565 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a605240a-8277-4c40-807c-aac12981d3d0/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2024-11-09 06:09:30,740 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a605240a-8277-4c40-807c-aac12981d3d0/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a605240a-8277-4c40-807c-aac12981d3d0/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt,21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a605240a-8277-4c40-807c-aac12981d3d0/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 06:09:30,741 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr71REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 422 more)] === [2024-11-09 06:09:30,741 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:09:30,741 INFO L85 PathProgramCache]: Analyzing trace with hash 2092120228, now seen corresponding path program 1 times [2024-11-09 06:09:30,742 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-09 06:09:30,742 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1645216374] [2024-11-09 06:09:30,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:09:30,742 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-09 06:09:30,742 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a605240a-8277-4c40-807c-aac12981d3d0/bin/utaipan-verify-YMUCfTKeje/mathsat [2024-11-09 06:09:30,745 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a605240a-8277-4c40-807c-aac12981d3d0/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-09 06:09:30,747 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a605240a-8277-4c40-807c-aac12981d3d0/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2024-11-09 06:09:31,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:09:31,099 INFO L255 TraceCheckSpWp]: Trace formula consists of 392 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-11-09 06:09:31,101 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 06:09:31,272 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 06:09:31,272 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 06:09:32,006 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 06:09:32,006 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-09 06:09:32,007 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1645216374] [2024-11-09 06:09:32,007 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1645216374] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 06:09:32,007 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1236547990] [2024-11-09 06:09:32,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:09:32,007 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-09 06:09:32,007 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a605240a-8277-4c40-807c-aac12981d3d0/bin/utaipan-verify-YMUCfTKeje/cvc4 [2024-11-09 06:09:32,011 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a605240a-8277-4c40-807c-aac12981d3d0/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-09 06:09:32,012 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a605240a-8277-4c40-807c-aac12981d3d0/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt (23)] Waiting until timeout for monitored process [2024-11-09 06:09:32,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:09:32,845 INFO L255 TraceCheckSpWp]: Trace formula consists of 392 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-11-09 06:09:32,847 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 06:09:32,906 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 06:09:32,906 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 06:09:33,077 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 06:09:33,078 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1236547990] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 06:09:33,078 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1524356098] [2024-11-09 06:09:33,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:09:33,078 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 06:09:33,079 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a605240a-8277-4c40-807c-aac12981d3d0/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 06:09:33,080 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a605240a-8277-4c40-807c-aac12981d3d0/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 06:09:33,082 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a605240a-8277-4c40-807c-aac12981d3d0/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2024-11-09 06:09:33,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:09:33,539 INFO L255 TraceCheckSpWp]: Trace formula consists of 392 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-09 06:09:33,543 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 06:09:33,668 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 06:09:33,669 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 06:09:34,439 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 06:09:34,439 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1524356098] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 06:09:34,440 INFO L185 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2024-11-09 06:09:34,440 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 14, 14, 14, 14] total 38 [2024-11-09 06:09:34,440 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1077010643] [2024-11-09 06:09:34,440 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2024-11-09 06:09:34,441 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2024-11-09 06:09:34,441 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-09 06:09:34,442 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2024-11-09 06:09:34,442 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=447, Invalid=959, Unknown=0, NotChecked=0, Total=1406 [2024-11-09 06:09:34,443 INFO L87 Difference]: Start difference. First operand 742 states and 799 transitions. Second operand has 38 states, 38 states have (on average 2.710526315789474) internal successors, (103), 38 states have internal predecessors, (103), 1 states have call successors, (1), 1 states have call predecessors, (1), 3 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2024-11-09 06:09:37,050 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 06:09:37,050 INFO L93 Difference]: Finished difference Result 768 states and 840 transitions. [2024-11-09 06:09:37,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2024-11-09 06:09:37,051 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 2.710526315789474) internal successors, (103), 38 states have internal predecessors, (103), 1 states have call successors, (1), 1 states have call predecessors, (1), 3 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 78 [2024-11-09 06:09:37,051 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 06:09:37,054 INFO L225 Difference]: With dead ends: 768 [2024-11-09 06:09:37,054 INFO L226 Difference]: Without dead ends: 762 [2024-11-09 06:09:37,055 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 483 GetRequests, 426 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 294 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=1168, Invalid=2254, Unknown=0, NotChecked=0, Total=3422 [2024-11-09 06:09:37,056 INFO L432 NwaCegarLoop]: 718 mSDtfsCounter, 24 mSDsluCounter, 9293 mSDsCounter, 0 mSdLazyCounter, 602 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 10011 SdHoareTripleChecker+Invalid, 636 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 602 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2024-11-09 06:09:37,057 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 10011 Invalid, 636 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 602 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2024-11-09 06:09:37,059 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 762 states. [2024-11-09 06:09:37,071 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 762 to 760. [2024-11-09 06:09:37,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 760 states, 471 states have (on average 1.6878980891719746) internal successors, (795), 753 states have internal predecessors, (795), 13 states have call successors, (13), 3 states have call predecessors, (13), 4 states have return successors, (14), 4 states have call predecessors, (14), 13 states have call successors, (14) [2024-11-09 06:09:37,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 760 states to 760 states and 822 transitions. [2024-11-09 06:09:37,076 INFO L78 Accepts]: Start accepts. Automaton has 760 states and 822 transitions. Word has length 78 [2024-11-09 06:09:37,076 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 06:09:37,077 INFO L471 AbstractCegarLoop]: Abstraction has 760 states and 822 transitions. [2024-11-09 06:09:37,077 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 2.710526315789474) internal successors, (103), 38 states have internal predecessors, (103), 1 states have call successors, (1), 1 states have call predecessors, (1), 3 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2024-11-09 06:09:37,077 INFO L276 IsEmpty]: Start isEmpty. Operand 760 states and 822 transitions. [2024-11-09 06:09:37,078 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2024-11-09 06:09:37,078 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 06:09:37,079 INFO L215 NwaCegarLoop]: trace histogram [22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 06:09:37,087 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a605240a-8277-4c40-807c-aac12981d3d0/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (22)] Ended with exit code 0 [2024-11-09 06:09:37,284 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a605240a-8277-4c40-807c-aac12981d3d0/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt (23)] Forceful destruction successful, exit code 0 [2024-11-09 06:09:37,500 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a605240a-8277-4c40-807c-aac12981d3d0/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2024-11-09 06:09:37,679 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a605240a-8277-4c40-807c-aac12981d3d0/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a605240a-8277-4c40-807c-aac12981d3d0/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt,24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a605240a-8277-4c40-807c-aac12981d3d0/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 06:09:37,680 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr71REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 422 more)] === [2024-11-09 06:09:37,680 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:09:37,680 INFO L85 PathProgramCache]: Analyzing trace with hash 818260708, now seen corresponding path program 2 times [2024-11-09 06:09:37,681 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-09 06:09:37,681 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2008919003] [2024-11-09 06:09:37,681 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-09 06:09:37,682 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-09 06:09:37,682 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a605240a-8277-4c40-807c-aac12981d3d0/bin/utaipan-verify-YMUCfTKeje/mathsat [2024-11-09 06:09:37,686 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a605240a-8277-4c40-807c-aac12981d3d0/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-09 06:09:37,688 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a605240a-8277-4c40-807c-aac12981d3d0/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (25)] Waiting until timeout for monitored process [2024-11-09 06:09:38,334 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-09 06:09:38,334 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 06:09:38,352 INFO L255 TraceCheckSpWp]: Trace formula consists of 524 conjuncts, 45 conjuncts are in the unsatisfiable core [2024-11-09 06:09:38,356 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 06:09:39,324 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 06:09:39,325 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 06:09:42,614 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 06:09:42,619 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-09 06:09:42,619 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2008919003] [2024-11-09 06:09:42,619 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2008919003] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 06:09:42,619 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1295022483] [2024-11-09 06:09:42,620 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-09 06:09:42,620 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-09 06:09:42,620 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a605240a-8277-4c40-807c-aac12981d3d0/bin/utaipan-verify-YMUCfTKeje/cvc4 [2024-11-09 06:09:42,622 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a605240a-8277-4c40-807c-aac12981d3d0/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-09 06:09:42,624 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a605240a-8277-4c40-807c-aac12981d3d0/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt (26)] Waiting until timeout for monitored process [2024-11-09 06:09:44,362 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-09 06:09:44,362 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 06:09:44,405 INFO L255 TraceCheckSpWp]: Trace formula consists of 524 conjuncts, 45 conjuncts are in the unsatisfiable core [2024-11-09 06:09:44,409 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 06:09:44,624 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 06:09:44,624 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 06:09:45,480 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 06:09:45,481 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1295022483] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 06:09:45,481 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [764333333] [2024-11-09 06:09:45,481 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-09 06:09:45,481 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 06:09:45,481 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a605240a-8277-4c40-807c-aac12981d3d0/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 06:09:45,483 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a605240a-8277-4c40-807c-aac12981d3d0/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 06:09:45,487 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a605240a-8277-4c40-807c-aac12981d3d0/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2024-11-09 06:10:08,184 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-09 06:10:08,184 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 06:10:08,206 INFO L255 TraceCheckSpWp]: Trace formula consists of 524 conjuncts, 26 conjuncts are in the unsatisfiable core [2024-11-09 06:10:08,209 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 06:10:09,438 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 06:10:09,438 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 06:10:09,918 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 06:10:09,918 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [764333333] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 06:10:09,918 INFO L185 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2024-11-09 06:10:09,919 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26, 26, 26, 26, 26] total 69 [2024-11-09 06:10:09,919 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1659820744] [2024-11-09 06:10:09,919 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2024-11-09 06:10:09,920 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 69 states [2024-11-09 06:10:09,920 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-09 06:10:09,923 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 69 interpolants. [2024-11-09 06:10:09,924 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1166, Invalid=3526, Unknown=0, NotChecked=0, Total=4692 [2024-11-09 06:10:09,925 INFO L87 Difference]: Start difference. First operand 760 states and 822 transitions. Second operand has 69 states, 69 states have (on average 1.9275362318840579) internal successors, (133), 69 states have internal predecessors, (133), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-09 06:10:22,784 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 06:10:22,785 INFO L93 Difference]: Finished difference Result 802 states and 897 transitions. [2024-11-09 06:10:22,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 73 states. [2024-11-09 06:10:22,786 INFO L78 Accepts]: Start accepts. Automaton has has 69 states, 69 states have (on average 1.9275362318840579) internal successors, (133), 69 states have internal predecessors, (133), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 90 [2024-11-09 06:10:22,786 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 06:10:22,789 INFO L225 Difference]: With dead ends: 802 [2024-11-09 06:10:22,790 INFO L226 Difference]: Without dead ends: 796 [2024-11-09 06:10:22,793 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 578 GetRequests, 467 SyntacticMatches, 0 SemanticMatches, 111 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1511 ImplicationChecksByTransitivity, 12.3s TimeCoverageRelationStatistics Valid=3696, Invalid=8960, Unknown=0, NotChecked=0, Total=12656 [2024-11-09 06:10:22,794 INFO L432 NwaCegarLoop]: 718 mSDtfsCounter, 38 mSDsluCounter, 17883 mSDsCounter, 0 mSdLazyCounter, 2485 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 18601 SdHoareTripleChecker+Invalid, 2514 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 2485 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.6s IncrementalHoareTripleChecker+Time [2024-11-09 06:10:22,795 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 18601 Invalid, 2514 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [29 Valid, 2485 Invalid, 0 Unknown, 0 Unchecked, 4.6s Time] [2024-11-09 06:10:22,796 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 796 states. [2024-11-09 06:10:22,808 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 796 to 796. [2024-11-09 06:10:22,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 796 states, 507 states have (on average 1.6627218934911243) internal successors, (843), 789 states have internal predecessors, (843), 13 states have call successors, (13), 3 states have call predecessors, (13), 4 states have return successors, (14), 4 states have call predecessors, (14), 13 states have call successors, (14) [2024-11-09 06:10:22,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 796 states to 796 states and 870 transitions. [2024-11-09 06:10:22,813 INFO L78 Accepts]: Start accepts. Automaton has 796 states and 870 transitions. Word has length 90 [2024-11-09 06:10:22,813 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 06:10:22,813 INFO L471 AbstractCegarLoop]: Abstraction has 796 states and 870 transitions. [2024-11-09 06:10:22,814 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 69 states, 69 states have (on average 1.9275362318840579) internal successors, (133), 69 states have internal predecessors, (133), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-09 06:10:22,814 INFO L276 IsEmpty]: Start isEmpty. Operand 796 states and 870 transitions. [2024-11-09 06:10:22,815 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2024-11-09 06:10:22,815 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 06:10:22,815 INFO L215 NwaCegarLoop]: trace histogram [44, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 06:10:22,862 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a605240a-8277-4c40-807c-aac12981d3d0/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Forceful destruction successful, exit code 0 [2024-11-09 06:10:23,026 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a605240a-8277-4c40-807c-aac12981d3d0/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (25)] Forceful destruction successful, exit code 0 [2024-11-09 06:10:23,226 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a605240a-8277-4c40-807c-aac12981d3d0/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt (26)] Ended with exit code 0 [2024-11-09 06:10:23,416 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a605240a-8277-4c40-807c-aac12981d3d0/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true,25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a605240a-8277-4c40-807c-aac12981d3d0/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a605240a-8277-4c40-807c-aac12981d3d0/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt [2024-11-09 06:10:23,416 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr71REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 422 more)] === [2024-11-09 06:10:23,417 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:10:23,417 INFO L85 PathProgramCache]: Analyzing trace with hash -1631051004, now seen corresponding path program 3 times [2024-11-09 06:10:23,417 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-09 06:10:23,417 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1864160302] [2024-11-09 06:10:23,418 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-09 06:10:23,418 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-09 06:10:23,418 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a605240a-8277-4c40-807c-aac12981d3d0/bin/utaipan-verify-YMUCfTKeje/mathsat [2024-11-09 06:10:23,419 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a605240a-8277-4c40-807c-aac12981d3d0/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-09 06:10:23,420 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a605240a-8277-4c40-807c-aac12981d3d0/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (28)] Waiting until timeout for monitored process [2024-11-09 06:10:25,860 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 23 check-sat command(s) [2024-11-09 06:10:25,860 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 06:10:25,884 INFO L255 TraceCheckSpWp]: Trace formula consists of 766 conjuncts, 110 conjuncts are in the unsatisfiable core [2024-11-09 06:10:25,899 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 06:10:25,917 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2024-11-09 06:10:26,323 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-11-09 06:10:26,323 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2024-11-09 06:10:26,333 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-11-09 06:10:26,412 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-09 06:10:26,419 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-09 06:10:26,557 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 10 [2024-11-09 06:10:26,563 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 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 7 treesize of output 3 [2024-11-09 06:10:27,631 INFO L349 Elim1Store]: treesize reduction 19, result has 20.8 percent of original size [2024-11-09 06:10:27,631 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 50 treesize of output 45 [2024-11-09 06:10:27,640 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 11 [2024-11-09 06:10:27,701 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2024-11-09 06:10:27,709 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 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 7 treesize of output 3 [2024-11-09 06:10:27,747 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 946 trivial. 0 not checked. [2024-11-09 06:10:27,748 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 06:10:29,545 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (and (forall ((v_ArrVal_2900 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem32#1.base| v_ArrVal_2900) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (bvule (bvadd (_ bv16 32) .cse0) (bvadd (_ bv20 32) .cse0)))) (forall ((v_ArrVal_2899 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_2900 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (_ bv20 32) (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem32#1.base| v_ArrVal_2900) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem32#1.base| v_ArrVal_2899) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))) is different from false [2024-11-09 06:10:29,552 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-09 06:10:29,552 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1864160302] [2024-11-09 06:10:29,552 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1864160302] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 06:10:29,552 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1494732531] [2024-11-09 06:10:29,552 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-09 06:10:29,553 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-09 06:10:29,553 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a605240a-8277-4c40-807c-aac12981d3d0/bin/utaipan-verify-YMUCfTKeje/cvc4 [2024-11-09 06:10:29,554 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a605240a-8277-4c40-807c-aac12981d3d0/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-09 06:10:29,555 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a605240a-8277-4c40-807c-aac12981d3d0/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt (29)] Waiting until timeout for monitored process [2024-11-09 06:16:33,329 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 23 check-sat command(s) [2024-11-09 06:16:33,329 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 06:16:33,463 INFO L255 TraceCheckSpWp]: Trace formula consists of 766 conjuncts, 109 conjuncts are in the unsatisfiable core [2024-11-09 06:16:33,478 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 06:16:33,481 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2024-11-09 06:16:33,662 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-11-09 06:16:33,662 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2024-11-09 06:16:33,675 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-11-09 06:16:33,751 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2024-11-09 06:16:33,759 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2024-11-09 06:16:33,990 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 10 [2024-11-09 06:16:33,998 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 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 9 treesize of output 3 [2024-11-09 06:16:34,998 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-09 06:16:34,999 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 62 treesize of output 57 [2024-11-09 06:16:35,007 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 13 [2024-11-09 06:16:35,104 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 13 [2024-11-09 06:16:35,114 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 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 9 treesize of output 3 [2024-11-09 06:16:35,121 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 946 trivial. 0 not checked. [2024-11-09 06:16:35,122 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 06:16:36,857 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (and (forall ((v_ArrVal_3436 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem32#1.base| v_ArrVal_3436) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (bvule (bvadd .cse0 (_ bv16 32)) (bvadd .cse0 (_ bv20 32))))) (forall ((v_ArrVal_3437 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_3436 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem32#1.base| v_ArrVal_3436) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) (_ bv20 32)) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem32#1.base| v_ArrVal_3437) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))) is different from false [2024-11-09 06:16:36,864 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1494732531] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 06:16:36,864 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [60869434] [2024-11-09 06:16:36,864 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-09 06:16:36,864 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 06:16:36,865 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a605240a-8277-4c40-807c-aac12981d3d0/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 06:16:36,867 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a605240a-8277-4c40-807c-aac12981d3d0/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 06:16:36,869 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a605240a-8277-4c40-807c-aac12981d3d0/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process