./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test1-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 9bd2c7ff 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_af045435-3aee-4c47-9158-60589698bbb1/bin/utaipan-verify-t7M7D8N6sZ/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af045435-3aee-4c47-9158-60589698bbb1/bin/utaipan-verify-t7M7D8N6sZ/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af045435-3aee-4c47-9158-60589698bbb1/bin/utaipan-verify-t7M7D8N6sZ/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af045435-3aee-4c47-9158-60589698bbb1/bin/utaipan-verify-t7M7D8N6sZ/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test1-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af045435-3aee-4c47-9158-60589698bbb1/bin/utaipan-verify-t7M7D8N6sZ/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af045435-3aee-4c47-9158-60589698bbb1/bin/utaipan-verify-t7M7D8N6sZ --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 ec105877a5c5817dc7d6d5e780267dcadb379ad27281f7d8981115c8613ba085 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 04:51:21,411 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 04:51:21,575 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af045435-3aee-4c47-9158-60589698bbb1/bin/utaipan-verify-t7M7D8N6sZ/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2023-11-19 04:51:21,592 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 04:51:21,592 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 04:51:21,636 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 04:51:21,636 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 04:51:21,637 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 04:51:21,638 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 04:51:21,644 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 04:51:21,644 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-19 04:51:21,645 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-19 04:51:21,645 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-19 04:51:21,647 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-19 04:51:21,648 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-19 04:51:21,648 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-19 04:51:21,649 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-19 04:51:21,649 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-19 04:51:21,650 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-19 04:51:21,650 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-19 04:51:21,651 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-19 04:51:21,651 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-19 04:51:21,652 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-19 04:51:21,652 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-19 04:51:21,653 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 04:51:21,654 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-19 04:51:21,654 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 04:51:21,655 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-19 04:51:21,655 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 04:51:21,656 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-19 04:51:21,657 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-19 04:51:21,658 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-19 04:51:21,658 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 04:51:21,658 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-19 04:51:21,658 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-19 04:51:21,659 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-19 04:51:21,659 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 04:51:21,659 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 04:51:21,660 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 04:51:21,660 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 04:51:21,660 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 04:51:21,661 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 04:51:21,661 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-19 04:51:21,661 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 04:51:21,662 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-19 04:51:21,662 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 04:51:21,662 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_af045435-3aee-4c47-9158-60589698bbb1/bin/utaipan-verify-t7M7D8N6sZ/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af045435-3aee-4c47-9158-60589698bbb1/bin/utaipan-verify-t7M7D8N6sZ Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ec105877a5c5817dc7d6d5e780267dcadb379ad27281f7d8981115c8613ba085 [2023-11-19 04:51:22,004 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 04:51:22,045 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 04:51:22,049 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 04:51:22,050 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 04:51:22,052 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 04:51:22,053 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af045435-3aee-4c47-9158-60589698bbb1/bin/utaipan-verify-t7M7D8N6sZ/../../sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test1-1.i [2023-11-19 04:51:25,515 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 04:51:25,988 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 04:51:25,989 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af045435-3aee-4c47-9158-60589698bbb1/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test1-1.i [2023-11-19 04:51:26,010 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af045435-3aee-4c47-9158-60589698bbb1/bin/utaipan-verify-t7M7D8N6sZ/data/135f5ed20/14a46280421742a082647691f51025fb/FLAG54e4471d1 [2023-11-19 04:51:26,027 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af045435-3aee-4c47-9158-60589698bbb1/bin/utaipan-verify-t7M7D8N6sZ/data/135f5ed20/14a46280421742a082647691f51025fb [2023-11-19 04:51:26,030 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 04:51:26,032 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 04:51:26,034 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 04:51:26,034 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 04:51:26,040 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 04:51:26,041 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 04:51:26" (1/1) ... [2023-11-19 04:51:26,043 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@584098a1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:51:26, skipping insertion in model container [2023-11-19 04:51:26,043 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 04:51:26" (1/1) ... [2023-11-19 04:51:26,123 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 04:51:26,772 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 04:51:26,795 ERROR L324 MainTranslator]: Unsupported Syntax: Found a cast between two array/pointer types of different sizes while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) [2023-11-19 04:51:26,796 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@337d97d2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:51:26, skipping insertion in model container [2023-11-19 04:51:26,796 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 04:51:26,796 INFO L186 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2023-11-19 04:51:26,799 INFO L158 Benchmark]: Toolchain (without parser) took 765.78ms. Allocated memory is still 169.9MB. Free memory was 131.4MB in the beginning and 114.6MB in the end (delta: 16.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2023-11-19 04:51:26,799 INFO L158 Benchmark]: CDTParser took 0.33ms. Allocated memory is still 115.3MB. Free memory was 89.0MB in the beginning and 88.9MB in the end (delta: 69.4kB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-19 04:51:26,801 INFO L158 Benchmark]: CACSL2BoogieTranslator took 762.82ms. Allocated memory is still 169.9MB. Free memory was 131.4MB in the beginning and 115.0MB in the end (delta: 16.4MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2023-11-19 04:51:26,803 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.33ms. Allocated memory is still 115.3MB. Free memory was 89.0MB in the beginning and 88.9MB in the end (delta: 69.4kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 762.82ms. Allocated memory is still 169.9MB. Free memory was 131.4MB in the beginning and 115.0MB in the end (delta: 16.4MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 751]: Unsupported Syntax Found a cast between two array/pointer types of different sizes while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af045435-3aee-4c47-9158-60589698bbb1/bin/utaipan-verify-t7M7D8N6sZ/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af045435-3aee-4c47-9158-60589698bbb1/bin/utaipan-verify-t7M7D8N6sZ/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af045435-3aee-4c47-9158-60589698bbb1/bin/utaipan-verify-t7M7D8N6sZ/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af045435-3aee-4c47-9158-60589698bbb1/bin/utaipan-verify-t7M7D8N6sZ/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test1-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af045435-3aee-4c47-9158-60589698bbb1/bin/utaipan-verify-t7M7D8N6sZ/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af045435-3aee-4c47-9158-60589698bbb1/bin/utaipan-verify-t7M7D8N6sZ --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 ec105877a5c5817dc7d6d5e780267dcadb379ad27281f7d8981115c8613ba085 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 04:51:29,485 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 04:51:29,658 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af045435-3aee-4c47-9158-60589698bbb1/bin/utaipan-verify-t7M7D8N6sZ/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf [2023-11-19 04:51:29,668 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 04:51:29,669 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 04:51:29,718 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 04:51:29,719 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 04:51:29,720 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 04:51:29,721 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 04:51:29,726 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 04:51:29,727 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-19 04:51:29,727 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-19 04:51:29,728 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-19 04:51:29,730 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-19 04:51:29,730 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-19 04:51:29,731 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-19 04:51:29,732 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-19 04:51:29,732 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-19 04:51:29,733 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 04:51:29,734 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-19 04:51:29,734 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 04:51:29,735 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-19 04:51:29,735 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 04:51:29,736 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-19 04:51:29,736 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-19 04:51:29,737 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-19 04:51:29,737 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 04:51:29,737 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-19 04:51:29,738 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-11-19 04:51:29,738 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-11-19 04:51:29,740 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-19 04:51:29,740 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-19 04:51:29,741 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 04:51:29,741 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 04:51:29,741 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-19 04:51:29,742 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 04:51:29,743 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 04:51:29,743 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 04:51:29,743 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 04:51:29,744 INFO L153 SettingsManager]: * Trace refinement strategy=WALRUS [2023-11-19 04:51:29,744 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-11-19 04:51:29,744 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-19 04:51:29,745 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 04:51:29,745 INFO L153 SettingsManager]: * Logic for external solver=AUFBV WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af045435-3aee-4c47-9158-60589698bbb1/bin/utaipan-verify-t7M7D8N6sZ/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af045435-3aee-4c47-9158-60589698bbb1/bin/utaipan-verify-t7M7D8N6sZ Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ec105877a5c5817dc7d6d5e780267dcadb379ad27281f7d8981115c8613ba085 [2023-11-19 04:51:30,303 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 04:51:30,340 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 04:51:30,343 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 04:51:30,345 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 04:51:30,345 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 04:51:30,347 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af045435-3aee-4c47-9158-60589698bbb1/bin/utaipan-verify-t7M7D8N6sZ/../../sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test1-1.i [2023-11-19 04:51:33,769 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 04:51:34,194 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 04:51:34,195 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af045435-3aee-4c47-9158-60589698bbb1/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test1-1.i [2023-11-19 04:51:34,229 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af045435-3aee-4c47-9158-60589698bbb1/bin/utaipan-verify-t7M7D8N6sZ/data/3d7d09920/1081d65864f8474a9b0ac49389abf5e0/FLAG8271d2b68 [2023-11-19 04:51:34,245 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af045435-3aee-4c47-9158-60589698bbb1/bin/utaipan-verify-t7M7D8N6sZ/data/3d7d09920/1081d65864f8474a9b0ac49389abf5e0 [2023-11-19 04:51:34,248 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 04:51:34,250 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 04:51:34,252 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 04:51:34,252 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 04:51:34,261 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 04:51:34,262 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 04:51:34" (1/1) ... [2023-11-19 04:51:34,263 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2a8fe4e2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:51:34, skipping insertion in model container [2023-11-19 04:51:34,264 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 04:51:34" (1/1) ... [2023-11-19 04:51:34,338 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 04:51:35,165 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 04:51:35,195 INFO L199 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2023-11-19 04:51:35,234 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 04:51:35,327 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 04:51:35,333 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 04:51:35,408 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 04:51:35,466 INFO L206 MainTranslator]: Completed translation [2023-11-19 04:51:35,467 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:51:35 WrapperNode [2023-11-19 04:51:35,467 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 04:51:35,469 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 04:51:35,469 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 04:51:35,469 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 04:51:35,478 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:51:35" (1/1) ... [2023-11-19 04:51:35,511 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:51:35" (1/1) ... [2023-11-19 04:51:35,568 INFO L138 Inliner]: procedures = 180, calls = 187, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 634 [2023-11-19 04:51:35,569 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 04:51:35,570 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 04:51:35,570 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 04:51:35,570 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 04:51:35,581 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:51:35" (1/1) ... [2023-11-19 04:51:35,582 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:51:35" (1/1) ... [2023-11-19 04:51:35,606 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:51:35" (1/1) ... [2023-11-19 04:51:35,606 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:51:35" (1/1) ... [2023-11-19 04:51:35,645 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:51:35" (1/1) ... [2023-11-19 04:51:35,654 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:51:35" (1/1) ... [2023-11-19 04:51:35,659 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:51:35" (1/1) ... [2023-11-19 04:51:35,664 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:51:35" (1/1) ... [2023-11-19 04:51:35,673 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 04:51:35,674 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 04:51:35,674 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 04:51:35,674 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 04:51:35,676 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:51:35" (1/1) ... [2023-11-19 04:51:35,683 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 04:51:35,703 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af045435-3aee-4c47-9158-60589698bbb1/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 04:51:35,718 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af045435-3aee-4c47-9158-60589698bbb1/bin/utaipan-verify-t7M7D8N6sZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 04:51:35,756 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af045435-3aee-4c47-9158-60589698bbb1/bin/utaipan-verify-t7M7D8N6sZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 04:51:35,774 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2023-11-19 04:51:35,774 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2023-11-19 04:51:35,774 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-11-19 04:51:35,775 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-11-19 04:51:35,775 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2023-11-19 04:51:35,775 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2023-11-19 04:51:35,775 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-19 04:51:35,776 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 04:51:35,776 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-19 04:51:35,778 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-19 04:51:35,779 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-19 04:51:35,780 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-19 04:51:35,780 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2023-11-19 04:51:35,780 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2023-11-19 04:51:35,781 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 04:51:35,781 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 04:51:36,034 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 04:51:36,037 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 04:51:36,043 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2023-11-19 04:51:39,923 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 04:51:39,952 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 04:51:39,953 INFO L302 CfgBuilder]: Removed 31 assume(true) statements. [2023-11-19 04:51:39,966 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 04:51:39 BoogieIcfgContainer [2023-11-19 04:51:39,969 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 04:51:39,972 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 04:51:39,973 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 04:51:39,977 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 04:51:39,978 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 04:51:34" (1/3) ... [2023-11-19 04:51:39,979 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@73d6d4ae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 04:51:39, skipping insertion in model container [2023-11-19 04:51:39,980 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:51:35" (2/3) ... [2023-11-19 04:51:39,982 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@73d6d4ae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 04:51:39, skipping insertion in model container [2023-11-19 04:51:39,982 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 04:51:39" (3/3) ... [2023-11-19 04:51:39,984 INFO L112 eAbstractionObserver]: Analyzing ICFG uthash_OAT_test1-1.i [2023-11-19 04:51:40,008 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 04:51:40,008 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 330 error locations. [2023-11-19 04:51:40,081 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 04:51:40,089 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@7da92a45, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-19 04:51:40,089 INFO L358 AbstractCegarLoop]: Starting to check reachability of 330 error locations. [2023-11-19 04:51:40,097 INFO L276 IsEmpty]: Start isEmpty. Operand has 673 states, 330 states have (on average 2.212121212121212) internal successors, (730), 667 states have internal predecessors, (730), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 4 states have call predecessors, (13), 13 states have call successors, (13) [2023-11-19 04:51:40,104 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2023-11-19 04:51:40,104 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:51:40,105 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2023-11-19 04:51:40,106 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 327 more)] === [2023-11-19 04:51:40,112 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:51:40,112 INFO L85 PathProgramCache]: Analyzing trace with hash 37287509, now seen corresponding path program 1 times [2023-11-19 04:51:40,133 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-19 04:51:40,134 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2113027752] [2023-11-19 04:51:40,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:51:40,135 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-19 04:51:40,135 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af045435-3aee-4c47-9158-60589698bbb1/bin/utaipan-verify-t7M7D8N6sZ/mathsat [2023-11-19 04:51:40,138 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af045435-3aee-4c47-9158-60589698bbb1/bin/utaipan-verify-t7M7D8N6sZ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-19 04:51:40,199 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af045435-3aee-4c47-9158-60589698bbb1/bin/utaipan-verify-t7M7D8N6sZ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2023-11-19 04:51:40,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:51:40,346 INFO L262 TraceCheckSpWp]: Trace formula consists of 27 conjuncts, 1 conjunts are in the unsatisfiable core [2023-11-19 04:51:40,352 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 04:51:40,373 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 04:51:40,373 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 04:51:40,374 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-19 04:51:40,374 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2113027752] [2023-11-19 04:51:40,375 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2113027752] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 04:51:40,375 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 04:51:40,376 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 04:51:40,378 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1606679341] [2023-11-19 04:51:40,379 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 04:51:40,383 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-19 04:51:40,384 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-19 04:51:40,425 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-19 04:51:40,426 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-19 04:51:40,431 INFO L87 Difference]: Start difference. First operand has 673 states, 330 states have (on average 2.212121212121212) internal successors, (730), 667 states have internal predecessors, (730), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 4 states have call predecessors, (13), 13 states have call successors, (13) Second operand has 2 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 04:51:40,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 04:51:40,508 INFO L93 Difference]: Finished difference Result 663 states and 709 transitions. [2023-11-19 04:51:40,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-19 04:51:40,511 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2023-11-19 04:51:40,511 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 04:51:40,537 INFO L225 Difference]: With dead ends: 663 [2023-11-19 04:51:40,537 INFO L226 Difference]: Without dead ends: 661 [2023-11-19 04:51:40,545 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-19 04:51:40,551 INFO L413 NwaCegarLoop]: 709 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 709 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 04:51:40,553 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 709 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 04:51:40,578 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 661 states. [2023-11-19 04:51:40,642 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 661 to 661. [2023-11-19 04:51:40,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 661 states, 324 states have (on average 2.1018518518518516) internal successors, (681), 655 states have internal predecessors, (681), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 4 states have call predecessors, (13), 13 states have call successors, (13) [2023-11-19 04:51:40,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 661 states to 661 states and 707 transitions. [2023-11-19 04:51:40,657 INFO L78 Accepts]: Start accepts. Automaton has 661 states and 707 transitions. Word has length 5 [2023-11-19 04:51:40,657 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 04:51:40,658 INFO L495 AbstractCegarLoop]: Abstraction has 661 states and 707 transitions. [2023-11-19 04:51:40,658 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 04:51:40,658 INFO L276 IsEmpty]: Start isEmpty. Operand 661 states and 707 transitions. [2023-11-19 04:51:40,659 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2023-11-19 04:51:40,659 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:51:40,659 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2023-11-19 04:51:40,669 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af045435-3aee-4c47-9158-60589698bbb1/bin/utaipan-verify-t7M7D8N6sZ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2023-11-19 04:51:40,862 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af045435-3aee-4c47-9158-60589698bbb1/bin/utaipan-verify-t7M7D8N6sZ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-19 04:51:40,863 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 327 more)] === [2023-11-19 04:51:40,864 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:51:40,864 INFO L85 PathProgramCache]: Analyzing trace with hash 37287571, now seen corresponding path program 1 times [2023-11-19 04:51:40,865 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-19 04:51:40,865 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1839254938] [2023-11-19 04:51:40,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:51:40,866 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-19 04:51:40,866 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af045435-3aee-4c47-9158-60589698bbb1/bin/utaipan-verify-t7M7D8N6sZ/mathsat [2023-11-19 04:51:40,872 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af045435-3aee-4c47-9158-60589698bbb1/bin/utaipan-verify-t7M7D8N6sZ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-19 04:51:40,914 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af045435-3aee-4c47-9158-60589698bbb1/bin/utaipan-verify-t7M7D8N6sZ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2023-11-19 04:51:41,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:51:41,015 INFO L262 TraceCheckSpWp]: Trace formula consists of 27 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-19 04:51:41,018 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 04:51:41,096 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2023-11-19 04:51:41,124 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 04:51:41,125 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 04:51:41,125 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-19 04:51:41,125 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1839254938] [2023-11-19 04:51:41,126 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1839254938] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 04:51:41,126 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 04:51:41,126 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 04:51:41,127 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1909294187] [2023-11-19 04:51:41,127 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 04:51:41,128 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 04:51:41,129 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-19 04:51:41,129 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 04:51:41,130 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 04:51:41,130 INFO L87 Difference]: Start difference. First operand 661 states and 707 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 04:51:42,871 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 04:51:42,872 INFO L93 Difference]: Finished difference Result 622 states and 669 transitions. [2023-11-19 04:51:42,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 04:51:42,873 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2023-11-19 04:51:42,873 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 04:51:42,879 INFO L225 Difference]: With dead ends: 622 [2023-11-19 04:51:42,880 INFO L226 Difference]: Without dead ends: 622 [2023-11-19 04:51:42,880 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 04:51:42,882 INFO L413 NwaCegarLoop]: 337 mSDtfsCounter, 598 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 352 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 611 SdHoareTripleChecker+Valid, 358 SdHoareTripleChecker+Invalid, 406 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 352 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2023-11-19 04:51:42,883 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [611 Valid, 358 Invalid, 406 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 352 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2023-11-19 04:51:42,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 622 states. [2023-11-19 04:51:42,912 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 622 to 612. [2023-11-19 04:51:42,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 612 states, 324 states have (on average 1.9506172839506173) internal successors, (632), 606 states have internal predecessors, (632), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 4 states have call predecessors, (13), 13 states have call successors, (13) [2023-11-19 04:51:42,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 612 states to 612 states and 658 transitions. [2023-11-19 04:51:42,918 INFO L78 Accepts]: Start accepts. Automaton has 612 states and 658 transitions. Word has length 5 [2023-11-19 04:51:42,918 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 04:51:42,919 INFO L495 AbstractCegarLoop]: Abstraction has 612 states and 658 transitions. [2023-11-19 04:51:42,919 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 04:51:42,919 INFO L276 IsEmpty]: Start isEmpty. Operand 612 states and 658 transitions. [2023-11-19 04:51:42,919 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2023-11-19 04:51:42,920 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:51:42,920 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2023-11-19 04:51:42,929 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af045435-3aee-4c47-9158-60589698bbb1/bin/utaipan-verify-t7M7D8N6sZ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2023-11-19 04:51:43,122 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af045435-3aee-4c47-9158-60589698bbb1/bin/utaipan-verify-t7M7D8N6sZ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-19 04:51:43,123 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 327 more)] === [2023-11-19 04:51:43,124 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:51:43,124 INFO L85 PathProgramCache]: Analyzing trace with hash 37287572, now seen corresponding path program 1 times [2023-11-19 04:51:43,124 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-19 04:51:43,125 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1887001171] [2023-11-19 04:51:43,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:51:43,125 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-19 04:51:43,125 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af045435-3aee-4c47-9158-60589698bbb1/bin/utaipan-verify-t7M7D8N6sZ/mathsat [2023-11-19 04:51:43,127 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af045435-3aee-4c47-9158-60589698bbb1/bin/utaipan-verify-t7M7D8N6sZ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-19 04:51:43,131 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af045435-3aee-4c47-9158-60589698bbb1/bin/utaipan-verify-t7M7D8N6sZ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2023-11-19 04:51:43,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:51:43,248 INFO L262 TraceCheckSpWp]: Trace formula consists of 27 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-19 04:51:43,250 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 04:51:43,304 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-11-19 04:51:43,331 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 04:51:43,331 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 04:51:43,332 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-19 04:51:43,332 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1887001171] [2023-11-19 04:51:43,332 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1887001171] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 04:51:43,333 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 04:51:43,333 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 04:51:43,333 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1870134346] [2023-11-19 04:51:43,334 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 04:51:43,334 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 04:51:43,334 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-19 04:51:43,335 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 04:51:43,335 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 04:51:43,336 INFO L87 Difference]: Start difference. First operand 612 states and 658 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 04:51:45,471 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 04:51:45,471 INFO L93 Difference]: Finished difference Result 682 states and 732 transitions. [2023-11-19 04:51:45,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 04:51:45,472 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2023-11-19 04:51:45,472 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 04:51:45,477 INFO L225 Difference]: With dead ends: 682 [2023-11-19 04:51:45,477 INFO L226 Difference]: Without dead ends: 682 [2023-11-19 04:51:45,478 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 04:51:45,480 INFO L413 NwaCegarLoop]: 533 mSDtfsCounter, 258 mSDsluCounter, 224 mSDsCounter, 0 mSdLazyCounter, 364 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 258 SdHoareTripleChecker+Valid, 757 SdHoareTripleChecker+Invalid, 376 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 364 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2023-11-19 04:51:45,480 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [258 Valid, 757 Invalid, 376 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 364 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2023-11-19 04:51:45,483 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 682 states. [2023-11-19 04:51:45,501 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 682 to 634. [2023-11-19 04:51:45,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 634 states, 356 states have (on average 1.9325842696629214) internal successors, (688), 628 states have internal predecessors, (688), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 4 states have call predecessors, (13), 13 states have call successors, (13) [2023-11-19 04:51:45,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 634 states to 634 states and 714 transitions. [2023-11-19 04:51:45,508 INFO L78 Accepts]: Start accepts. Automaton has 634 states and 714 transitions. Word has length 5 [2023-11-19 04:51:45,509 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 04:51:45,509 INFO L495 AbstractCegarLoop]: Abstraction has 634 states and 714 transitions. [2023-11-19 04:51:45,509 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 04:51:45,509 INFO L276 IsEmpty]: Start isEmpty. Operand 634 states and 714 transitions. [2023-11-19 04:51:45,510 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2023-11-19 04:51:45,510 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:51:45,510 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2023-11-19 04:51:45,523 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af045435-3aee-4c47-9158-60589698bbb1/bin/utaipan-verify-t7M7D8N6sZ/mathsat -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)] Forceful destruction successful, exit code 0 [2023-11-19 04:51:45,712 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af045435-3aee-4c47-9158-60589698bbb1/bin/utaipan-verify-t7M7D8N6sZ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-19 04:51:45,713 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr322REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 327 more)] === [2023-11-19 04:51:45,713 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:51:45,714 INFO L85 PathProgramCache]: Analyzing trace with hash 1156737092, now seen corresponding path program 1 times [2023-11-19 04:51:45,714 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-19 04:51:45,714 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [757696590] [2023-11-19 04:51:45,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:51:45,715 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-19 04:51:45,715 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af045435-3aee-4c47-9158-60589698bbb1/bin/utaipan-verify-t7M7D8N6sZ/mathsat [2023-11-19 04:51:45,717 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af045435-3aee-4c47-9158-60589698bbb1/bin/utaipan-verify-t7M7D8N6sZ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-19 04:51:45,719 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af045435-3aee-4c47-9158-60589698bbb1/bin/utaipan-verify-t7M7D8N6sZ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2023-11-19 04:51:45,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:51:45,830 INFO L262 TraceCheckSpWp]: Trace formula consists of 21 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-19 04:51:45,832 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 04:51:45,846 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 04:51:45,847 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 04:51:45,851 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-19 04:51:45,851 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [757696590] [2023-11-19 04:51:45,854 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [757696590] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 04:51:45,855 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 04:51:45,855 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 04:51:45,855 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1898331793] [2023-11-19 04:51:45,855 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 04:51:45,856 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 04:51:45,856 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-19 04:51:45,857 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 04:51:45,857 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 04:51:45,857 INFO L87 Difference]: Start difference. First operand 634 states and 714 transitions. Second operand has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 04:51:45,976 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 04:51:45,976 INFO L93 Difference]: Finished difference Result 1218 states and 1358 transitions. [2023-11-19 04:51:45,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 04:51:45,981 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2023-11-19 04:51:45,981 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 04:51:45,991 INFO L225 Difference]: With dead ends: 1218 [2023-11-19 04:51:45,991 INFO L226 Difference]: Without dead ends: 1218 [2023-11-19 04:51:45,993 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 04:51:45,996 INFO L413 NwaCegarLoop]: 865 mSDtfsCounter, 571 mSDsluCounter, 642 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 574 SdHoareTripleChecker+Valid, 1507 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 04:51:46,000 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [574 Valid, 1507 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 04:51:46,008 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1218 states. [2023-11-19 04:51:46,033 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1218 to 635. [2023-11-19 04:51:46,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 635 states, 357 states have (on average 1.9299719887955182) internal successors, (689), 629 states have internal predecessors, (689), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 4 states have call predecessors, (13), 13 states have call successors, (13) [2023-11-19 04:51:46,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 635 states to 635 states and 715 transitions. [2023-11-19 04:51:46,041 INFO L78 Accepts]: Start accepts. Automaton has 635 states and 715 transitions. Word has length 6 [2023-11-19 04:51:46,041 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 04:51:46,041 INFO L495 AbstractCegarLoop]: Abstraction has 635 states and 715 transitions. [2023-11-19 04:51:46,042 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 04:51:46,042 INFO L276 IsEmpty]: Start isEmpty. Operand 635 states and 715 transitions. [2023-11-19 04:51:46,043 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2023-11-19 04:51:46,043 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:51:46,043 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 04:51:46,052 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af045435-3aee-4c47-9158-60589698bbb1/bin/utaipan-verify-t7M7D8N6sZ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2023-11-19 04:51:46,245 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af045435-3aee-4c47-9158-60589698bbb1/bin/utaipan-verify-t7M7D8N6sZ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-19 04:51:46,245 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 327 more)] === [2023-11-19 04:51:46,246 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:51:46,246 INFO L85 PathProgramCache]: Analyzing trace with hash 334651453, now seen corresponding path program 1 times [2023-11-19 04:51:46,247 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-19 04:51:46,247 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1618316292] [2023-11-19 04:51:46,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:51:46,247 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-19 04:51:46,248 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af045435-3aee-4c47-9158-60589698bbb1/bin/utaipan-verify-t7M7D8N6sZ/mathsat [2023-11-19 04:51:46,249 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af045435-3aee-4c47-9158-60589698bbb1/bin/utaipan-verify-t7M7D8N6sZ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-19 04:51:46,253 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af045435-3aee-4c47-9158-60589698bbb1/bin/utaipan-verify-t7M7D8N6sZ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2023-11-19 04:51:46,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:51:46,397 INFO L262 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-19 04:51:46,399 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 04:51:46,409 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 04:51:46,409 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 04:51:46,409 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-19 04:51:46,409 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1618316292] [2023-11-19 04:51:46,410 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1618316292] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 04:51:46,410 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 04:51:46,410 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 04:51:46,410 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [733400671] [2023-11-19 04:51:46,410 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 04:51:46,411 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 04:51:46,411 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-19 04:51:46,411 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 04:51:46,412 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 04:51:46,412 INFO L87 Difference]: Start difference. First operand 635 states and 715 transitions. Second operand has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 04:51:46,457 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 04:51:46,457 INFO L93 Difference]: Finished difference Result 593 states and 672 transitions. [2023-11-19 04:51:46,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 04:51:46,458 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2023-11-19 04:51:46,459 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 04:51:46,463 INFO L225 Difference]: With dead ends: 593 [2023-11-19 04:51:46,463 INFO L226 Difference]: Without dead ends: 593 [2023-11-19 04:51:46,464 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 04:51:46,465 INFO L413 NwaCegarLoop]: 593 mSDtfsCounter, 81 mSDsluCounter, 521 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 81 SdHoareTripleChecker+Valid, 1114 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 04:51:46,465 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [81 Valid, 1114 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 04:51:46,468 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 593 states. [2023-11-19 04:51:46,481 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 593 to 593. [2023-11-19 04:51:46,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 593 states, 339 states have (on average 1.9056047197640118) internal successors, (646), 587 states have internal predecessors, (646), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 4 states have call predecessors, (13), 13 states have call successors, (13) [2023-11-19 04:51:46,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 593 states to 593 states and 672 transitions. [2023-11-19 04:51:46,488 INFO L78 Accepts]: Start accepts. Automaton has 593 states and 672 transitions. Word has length 11 [2023-11-19 04:51:46,488 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 04:51:46,488 INFO L495 AbstractCegarLoop]: Abstraction has 593 states and 672 transitions. [2023-11-19 04:51:46,489 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 04:51:46,489 INFO L276 IsEmpty]: Start isEmpty. Operand 593 states and 672 transitions. [2023-11-19 04:51:46,489 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2023-11-19 04:51:46,490 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:51:46,490 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 04:51:46,499 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af045435-3aee-4c47-9158-60589698bbb1/bin/utaipan-verify-t7M7D8N6sZ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2023-11-19 04:51:46,693 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af045435-3aee-4c47-9158-60589698bbb1/bin/utaipan-verify-t7M7D8N6sZ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-19 04:51:46,694 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr28REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 327 more)] === [2023-11-19 04:51:46,694 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:51:46,695 INFO L85 PathProgramCache]: Analyzing trace with hash -522505033, now seen corresponding path program 1 times [2023-11-19 04:51:46,695 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-19 04:51:46,695 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [512111189] [2023-11-19 04:51:46,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:51:46,696 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-19 04:51:46,696 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af045435-3aee-4c47-9158-60589698bbb1/bin/utaipan-verify-t7M7D8N6sZ/mathsat [2023-11-19 04:51:46,697 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af045435-3aee-4c47-9158-60589698bbb1/bin/utaipan-verify-t7M7D8N6sZ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-19 04:51:46,699 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af045435-3aee-4c47-9158-60589698bbb1/bin/utaipan-verify-t7M7D8N6sZ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2023-11-19 04:51:46,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:51:46,844 INFO L262 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-19 04:51:46,846 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 04:51:46,874 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 04:51:46,874 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 04:51:46,874 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-19 04:51:46,875 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [512111189] [2023-11-19 04:51:46,875 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [512111189] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 04:51:46,875 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 04:51:46,875 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 04:51:46,876 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [364347842] [2023-11-19 04:51:46,876 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 04:51:46,876 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 04:51:46,876 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-19 04:51:46,877 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 04:51:46,877 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-19 04:51:46,877 INFO L87 Difference]: Start difference. First operand 593 states and 672 transitions. Second operand has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 04:51:47,021 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 04:51:47,021 INFO L93 Difference]: Finished difference Result 572 states and 644 transitions. [2023-11-19 04:51:47,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 04:51:47,022 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2023-11-19 04:51:47,023 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 04:51:47,028 INFO L225 Difference]: With dead ends: 572 [2023-11-19 04:51:47,028 INFO L226 Difference]: Without dead ends: 572 [2023-11-19 04:51:47,029 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-19 04:51:47,031 INFO L413 NwaCegarLoop]: 548 mSDtfsCounter, 62 mSDsluCounter, 1062 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 1610 SdHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 04:51:47,031 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [62 Valid, 1610 Invalid, 57 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 04:51:47,034 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 572 states. [2023-11-19 04:51:47,051 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 572 to 571. [2023-11-19 04:51:47,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 571 states, 331 states have (on average 1.86404833836858) internal successors, (617), 565 states have internal predecessors, (617), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 4 states have call predecessors, (13), 13 states have call successors, (13) [2023-11-19 04:51:47,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 571 states to 571 states and 643 transitions. [2023-11-19 04:51:47,058 INFO L78 Accepts]: Start accepts. Automaton has 571 states and 643 transitions. Word has length 13 [2023-11-19 04:51:47,058 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 04:51:47,059 INFO L495 AbstractCegarLoop]: Abstraction has 571 states and 643 transitions. [2023-11-19 04:51:47,059 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 04:51:47,059 INFO L276 IsEmpty]: Start isEmpty. Operand 571 states and 643 transitions. [2023-11-19 04:51:47,060 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2023-11-19 04:51:47,061 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:51:47,061 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 04:51:47,070 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af045435-3aee-4c47-9158-60589698bbb1/bin/utaipan-verify-t7M7D8N6sZ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2023-11-19 04:51:47,264 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af045435-3aee-4c47-9158-60589698bbb1/bin/utaipan-verify-t7M7D8N6sZ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-19 04:51:47,265 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr42REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 327 more)] === [2023-11-19 04:51:47,265 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:51:47,265 INFO L85 PathProgramCache]: Analyzing trace with hash -22216187, now seen corresponding path program 1 times [2023-11-19 04:51:47,266 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-19 04:51:47,266 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [397914561] [2023-11-19 04:51:47,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:51:47,267 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-19 04:51:47,267 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af045435-3aee-4c47-9158-60589698bbb1/bin/utaipan-verify-t7M7D8N6sZ/mathsat [2023-11-19 04:51:47,269 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af045435-3aee-4c47-9158-60589698bbb1/bin/utaipan-verify-t7M7D8N6sZ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-19 04:51:47,279 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af045435-3aee-4c47-9158-60589698bbb1/bin/utaipan-verify-t7M7D8N6sZ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2023-11-19 04:51:47,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:51:47,434 INFO L262 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-19 04:51:47,438 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 04:51:47,445 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2023-11-19 04:51:47,560 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 04:51:47,560 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 04:51:47,561 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-19 04:51:47,561 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [397914561] [2023-11-19 04:51:47,562 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [397914561] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 04:51:47,562 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 04:51:47,562 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 04:51:47,562 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [633397251] [2023-11-19 04:51:47,563 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 04:51:47,563 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 04:51:47,563 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-19 04:51:47,564 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 04:51:47,564 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-19 04:51:47,564 INFO L87 Difference]: Start difference. First operand 571 states and 643 transitions. Second operand has 4 states, 3 states have (on average 9.0) internal successors, (27), 4 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 04:51:49,655 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 04:51:49,655 INFO L93 Difference]: Finished difference Result 577 states and 650 transitions. [2023-11-19 04:51:49,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 04:51:49,656 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 9.0) internal successors, (27), 4 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2023-11-19 04:51:49,656 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 04:51:49,661 INFO L225 Difference]: With dead ends: 577 [2023-11-19 04:51:49,661 INFO L226 Difference]: Without dead ends: 577 [2023-11-19 04:51:49,661 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-19 04:51:49,662 INFO L413 NwaCegarLoop]: 291 mSDtfsCounter, 527 mSDsluCounter, 242 mSDsCounter, 0 mSdLazyCounter, 606 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 540 SdHoareTripleChecker+Valid, 533 SdHoareTripleChecker+Invalid, 615 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 606 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2023-11-19 04:51:49,663 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [540 Valid, 533 Invalid, 615 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 606 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2023-11-19 04:51:49,665 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 577 states. [2023-11-19 04:51:49,677 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 577 to 567. [2023-11-19 04:51:49,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 567 states, 331 states have (on average 1.851963746223565) internal successors, (613), 561 states have internal predecessors, (613), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 4 states have call predecessors, (13), 13 states have call successors, (13) [2023-11-19 04:51:49,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 567 states to 567 states and 639 transitions. [2023-11-19 04:51:49,683 INFO L78 Accepts]: Start accepts. Automaton has 567 states and 639 transitions. Word has length 27 [2023-11-19 04:51:49,683 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 04:51:49,684 INFO L495 AbstractCegarLoop]: Abstraction has 567 states and 639 transitions. [2023-11-19 04:51:49,684 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 9.0) internal successors, (27), 4 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 04:51:49,684 INFO L276 IsEmpty]: Start isEmpty. Operand 567 states and 639 transitions. [2023-11-19 04:51:49,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2023-11-19 04:51:49,685 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:51:49,685 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 04:51:49,694 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af045435-3aee-4c47-9158-60589698bbb1/bin/utaipan-verify-t7M7D8N6sZ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2023-11-19 04:51:49,888 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af045435-3aee-4c47-9158-60589698bbb1/bin/utaipan-verify-t7M7D8N6sZ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-19 04:51:49,889 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr43REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 327 more)] === [2023-11-19 04:51:49,889 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:51:49,890 INFO L85 PathProgramCache]: Analyzing trace with hash -22216186, now seen corresponding path program 1 times [2023-11-19 04:51:49,890 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-19 04:51:49,890 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1012640059] [2023-11-19 04:51:49,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:51:49,891 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-19 04:51:49,891 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af045435-3aee-4c47-9158-60589698bbb1/bin/utaipan-verify-t7M7D8N6sZ/mathsat [2023-11-19 04:51:49,893 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af045435-3aee-4c47-9158-60589698bbb1/bin/utaipan-verify-t7M7D8N6sZ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-19 04:51:49,896 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af045435-3aee-4c47-9158-60589698bbb1/bin/utaipan-verify-t7M7D8N6sZ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2023-11-19 04:51:50,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:51:50,055 INFO L262 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-19 04:51:50,059 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 04:51:50,075 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-11-19 04:51:50,329 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 04:51:50,330 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 04:51:50,330 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-19 04:51:50,330 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1012640059] [2023-11-19 04:51:50,330 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1012640059] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 04:51:50,330 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 04:51:50,331 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 04:51:50,331 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [244052382] [2023-11-19 04:51:50,331 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 04:51:50,332 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 04:51:50,332 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-19 04:51:50,332 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 04:51:50,333 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-19 04:51:50,333 INFO L87 Difference]: Start difference. First operand 567 states and 639 transitions. Second operand has 4 states, 3 states have (on average 9.0) internal successors, (27), 4 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 04:51:52,868 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 04:51:52,868 INFO L93 Difference]: Finished difference Result 611 states and 653 transitions. [2023-11-19 04:51:52,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 04:51:52,869 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 9.0) internal successors, (27), 4 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2023-11-19 04:51:52,870 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 04:51:52,874 INFO L225 Difference]: With dead ends: 611 [2023-11-19 04:51:52,874 INFO L226 Difference]: Without dead ends: 611 [2023-11-19 04:51:52,875 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-19 04:51:52,875 INFO L413 NwaCegarLoop]: 487 mSDtfsCounter, 189 mSDsluCounter, 476 mSDsCounter, 0 mSdLazyCounter, 593 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 189 SdHoareTripleChecker+Valid, 963 SdHoareTripleChecker+Invalid, 596 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 593 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2023-11-19 04:51:52,876 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [189 Valid, 963 Invalid, 596 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 593 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2023-11-19 04:51:52,878 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 611 states. [2023-11-19 04:51:52,891 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 611 to 563. [2023-11-19 04:51:52,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 563 states, 331 states have (on average 1.8398791540785497) internal successors, (609), 557 states have internal predecessors, (609), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 4 states have call predecessors, (13), 13 states have call successors, (13) [2023-11-19 04:51:52,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 563 states to 563 states and 635 transitions. [2023-11-19 04:51:52,897 INFO L78 Accepts]: Start accepts. Automaton has 563 states and 635 transitions. Word has length 27 [2023-11-19 04:51:52,897 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 04:51:52,897 INFO L495 AbstractCegarLoop]: Abstraction has 563 states and 635 transitions. [2023-11-19 04:51:52,898 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 9.0) internal successors, (27), 4 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 04:51:52,898 INFO L276 IsEmpty]: Start isEmpty. Operand 563 states and 635 transitions. [2023-11-19 04:51:52,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2023-11-19 04:51:52,900 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:51:52,900 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 04:51:52,910 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af045435-3aee-4c47-9158-60589698bbb1/bin/utaipan-verify-t7M7D8N6sZ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2023-11-19 04:51:53,104 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af045435-3aee-4c47-9158-60589698bbb1/bin/utaipan-verify-t7M7D8N6sZ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-19 04:51:53,104 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr107REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 327 more)] === [2023-11-19 04:51:53,104 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:51:53,105 INFO L85 PathProgramCache]: Analyzing trace with hash -125948801, now seen corresponding path program 1 times [2023-11-19 04:51:53,105 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-19 04:51:53,105 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [654418935] [2023-11-19 04:51:53,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:51:53,106 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-19 04:51:53,106 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af045435-3aee-4c47-9158-60589698bbb1/bin/utaipan-verify-t7M7D8N6sZ/mathsat [2023-11-19 04:51:53,107 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af045435-3aee-4c47-9158-60589698bbb1/bin/utaipan-verify-t7M7D8N6sZ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-19 04:51:53,109 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af045435-3aee-4c47-9158-60589698bbb1/bin/utaipan-verify-t7M7D8N6sZ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2023-11-19 04:51:53,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:51:53,332 INFO L262 TraceCheckSpWp]: Trace formula consists of 169 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-19 04:51:53,335 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 04:51:53,398 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 04:51:53,398 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 04:51:53,398 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-19 04:51:53,398 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [654418935] [2023-11-19 04:51:53,398 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [654418935] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 04:51:53,399 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 04:51:53,399 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 04:51:53,399 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [479276861] [2023-11-19 04:51:53,399 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 04:51:53,399 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 04:51:53,400 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-19 04:51:53,400 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 04:51:53,400 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-19 04:51:53,400 INFO L87 Difference]: Start difference. First operand 563 states and 635 transitions. Second operand has 4 states, 4 states have (on average 10.75) internal successors, (43), 4 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 04:51:53,477 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 04:51:53,477 INFO L93 Difference]: Finished difference Result 557 states and 625 transitions. [2023-11-19 04:51:53,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 04:51:53,478 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.75) internal successors, (43), 4 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 43 [2023-11-19 04:51:53,479 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 04:51:53,482 INFO L225 Difference]: With dead ends: 557 [2023-11-19 04:51:53,483 INFO L226 Difference]: Without dead ends: 557 [2023-11-19 04:51:53,483 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-19 04:51:53,484 INFO L413 NwaCegarLoop]: 542 mSDtfsCounter, 31 mSDsluCounter, 1046 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 1588 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 04:51:53,484 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 1588 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 04:51:53,486 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 557 states. [2023-11-19 04:51:53,498 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 557 to 557. [2023-11-19 04:51:53,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 557 states, 325 states have (on average 1.843076923076923) internal successors, (599), 551 states have internal predecessors, (599), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 4 states have call predecessors, (13), 13 states have call successors, (13) [2023-11-19 04:51:53,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 557 states to 557 states and 625 transitions. [2023-11-19 04:51:53,503 INFO L78 Accepts]: Start accepts. Automaton has 557 states and 625 transitions. Word has length 43 [2023-11-19 04:51:53,503 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 04:51:53,503 INFO L495 AbstractCegarLoop]: Abstraction has 557 states and 625 transitions. [2023-11-19 04:51:53,504 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.75) internal successors, (43), 4 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 04:51:53,504 INFO L276 IsEmpty]: Start isEmpty. Operand 557 states and 625 transitions. [2023-11-19 04:51:53,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2023-11-19 04:51:53,506 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:51:53,506 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 04:51:53,521 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af045435-3aee-4c47-9158-60589698bbb1/bin/utaipan-verify-t7M7D8N6sZ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2023-11-19 04:51:53,711 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af045435-3aee-4c47-9158-60589698bbb1/bin/utaipan-verify-t7M7D8N6sZ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-19 04:51:53,712 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr107REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 327 more)] === [2023-11-19 04:51:53,712 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:51:53,712 INFO L85 PathProgramCache]: Analyzing trace with hash 796373579, now seen corresponding path program 1 times [2023-11-19 04:51:53,712 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-19 04:51:53,713 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [480058466] [2023-11-19 04:51:53,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:51:53,713 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-19 04:51:53,713 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af045435-3aee-4c47-9158-60589698bbb1/bin/utaipan-verify-t7M7D8N6sZ/mathsat [2023-11-19 04:51:53,719 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af045435-3aee-4c47-9158-60589698bbb1/bin/utaipan-verify-t7M7D8N6sZ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-19 04:51:53,720 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af045435-3aee-4c47-9158-60589698bbb1/bin/utaipan-verify-t7M7D8N6sZ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2023-11-19 04:51:53,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:51:53,971 INFO L262 TraceCheckSpWp]: Trace formula consists of 193 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-19 04:51:53,974 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 04:51:54,334 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 04:51:54,334 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 04:51:54,334 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-19 04:51:54,335 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [480058466] [2023-11-19 04:51:54,335 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [480058466] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 04:51:54,335 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 04:51:54,335 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 04:51:54,335 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [207322587] [2023-11-19 04:51:54,336 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 04:51:54,336 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 04:51:54,336 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-19 04:51:54,337 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 04:51:54,337 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 04:51:54,337 INFO L87 Difference]: Start difference. First operand 557 states and 625 transitions. Second operand has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 04:51:54,444 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 04:51:54,444 INFO L93 Difference]: Finished difference Result 604 states and 672 transitions. [2023-11-19 04:51:54,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 04:51:54,446 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 51 [2023-11-19 04:51:54,446 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 04:51:54,450 INFO L225 Difference]: With dead ends: 604 [2023-11-19 04:51:54,450 INFO L226 Difference]: Without dead ends: 604 [2023-11-19 04:51:54,450 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 04:51:54,451 INFO L413 NwaCegarLoop]: 557 mSDtfsCounter, 67 mSDsluCounter, 461 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 1018 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 04:51:54,452 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [69 Valid, 1018 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 04:51:54,454 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 604 states. [2023-11-19 04:51:54,466 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 604 to 604. [2023-11-19 04:51:54,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 604 states, 372 states have (on average 1.7365591397849462) internal successors, (646), 598 states have internal predecessors, (646), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 4 states have call predecessors, (13), 13 states have call successors, (13) [2023-11-19 04:51:54,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 604 states to 604 states and 672 transitions. [2023-11-19 04:51:54,471 INFO L78 Accepts]: Start accepts. Automaton has 604 states and 672 transitions. Word has length 51 [2023-11-19 04:51:54,472 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 04:51:54,472 INFO L495 AbstractCegarLoop]: Abstraction has 604 states and 672 transitions. [2023-11-19 04:51:54,472 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 04:51:54,472 INFO L276 IsEmpty]: Start isEmpty. Operand 604 states and 672 transitions. [2023-11-19 04:51:54,474 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2023-11-19 04:51:54,474 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:51:54,474 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 04:51:54,487 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af045435-3aee-4c47-9158-60589698bbb1/bin/utaipan-verify-t7M7D8N6sZ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2023-11-19 04:51:54,679 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af045435-3aee-4c47-9158-60589698bbb1/bin/utaipan-verify-t7M7D8N6sZ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-19 04:51:54,680 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr61REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 327 more)] === [2023-11-19 04:51:54,680 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:51:54,680 INFO L85 PathProgramCache]: Analyzing trace with hash -741532885, now seen corresponding path program 1 times [2023-11-19 04:51:54,682 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-19 04:51:54,682 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [460640448] [2023-11-19 04:51:54,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:51:54,683 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-19 04:51:54,683 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af045435-3aee-4c47-9158-60589698bbb1/bin/utaipan-verify-t7M7D8N6sZ/mathsat [2023-11-19 04:51:54,684 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af045435-3aee-4c47-9158-60589698bbb1/bin/utaipan-verify-t7M7D8N6sZ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-19 04:51:54,685 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af045435-3aee-4c47-9158-60589698bbb1/bin/utaipan-verify-t7M7D8N6sZ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2023-11-19 04:51:55,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:51:55,055 INFO L262 TraceCheckSpWp]: Trace formula consists of 228 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-19 04:51:55,060 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 04:51:55,071 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2023-11-19 04:51:55,083 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-11-19 04:51:55,829 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 04:51:55,831 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 9 [2023-11-19 04:51:55,858 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2023-11-19 04:51:55,858 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2023-11-19 04:51:55,877 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 04:51:55,878 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 04:51:55,878 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-19 04:51:55,878 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [460640448] [2023-11-19 04:51:55,878 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [460640448] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 04:51:55,878 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 04:51:55,879 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 04:51:55,879 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1359790732] [2023-11-19 04:51:55,879 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 04:51:55,880 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 04:51:55,880 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-19 04:51:55,880 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 04:51:55,881 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-19 04:51:55,881 INFO L87 Difference]: Start difference. First operand 604 states and 672 transitions. Second operand has 4 states, 3 states have (on average 18.0) internal successors, (54), 4 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 04:51:57,476 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 04:51:57,477 INFO L93 Difference]: Finished difference Result 576 states and 645 transitions. [2023-11-19 04:51:57,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 04:51:57,477 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 18.0) internal successors, (54), 4 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 54 [2023-11-19 04:51:57,478 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 04:51:57,481 INFO L225 Difference]: With dead ends: 576 [2023-11-19 04:51:57,482 INFO L226 Difference]: Without dead ends: 576 [2023-11-19 04:51:57,482 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-19 04:51:57,483 INFO L413 NwaCegarLoop]: 202 mSDtfsCounter, 399 mSDsluCounter, 119 mSDsCounter, 0 mSdLazyCounter, 357 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 402 SdHoareTripleChecker+Valid, 321 SdHoareTripleChecker+Invalid, 399 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 357 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2023-11-19 04:51:57,483 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [402 Valid, 321 Invalid, 399 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 357 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2023-11-19 04:51:57,485 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 576 states. [2023-11-19 04:51:57,496 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 576 to 534. [2023-11-19 04:51:57,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 534 states, 340 states have (on average 1.5941176470588236) internal successors, (542), 528 states have internal predecessors, (542), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 4 states have call predecessors, (13), 13 states have call successors, (13) [2023-11-19 04:51:57,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 534 states to 534 states and 568 transitions. [2023-11-19 04:51:57,500 INFO L78 Accepts]: Start accepts. Automaton has 534 states and 568 transitions. Word has length 54 [2023-11-19 04:51:57,500 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 04:51:57,500 INFO L495 AbstractCegarLoop]: Abstraction has 534 states and 568 transitions. [2023-11-19 04:51:57,501 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 18.0) internal successors, (54), 4 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 04:51:57,501 INFO L276 IsEmpty]: Start isEmpty. Operand 534 states and 568 transitions. [2023-11-19 04:51:57,502 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2023-11-19 04:51:57,502 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:51:57,502 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 04:51:57,515 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af045435-3aee-4c47-9158-60589698bbb1/bin/utaipan-verify-t7M7D8N6sZ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2023-11-19 04:51:57,714 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af045435-3aee-4c47-9158-60589698bbb1/bin/utaipan-verify-t7M7D8N6sZ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-19 04:51:57,715 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr66REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 327 more)] === [2023-11-19 04:51:57,716 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:51:57,716 INFO L85 PathProgramCache]: Analyzing trace with hash -313883618, now seen corresponding path program 1 times [2023-11-19 04:51:57,717 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-19 04:51:57,717 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1267200190] [2023-11-19 04:51:57,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:51:57,717 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-19 04:51:57,718 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af045435-3aee-4c47-9158-60589698bbb1/bin/utaipan-verify-t7M7D8N6sZ/mathsat [2023-11-19 04:51:57,719 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af045435-3aee-4c47-9158-60589698bbb1/bin/utaipan-verify-t7M7D8N6sZ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-19 04:51:57,762 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af045435-3aee-4c47-9158-60589698bbb1/bin/utaipan-verify-t7M7D8N6sZ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2023-11-19 04:51:58,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:51:58,028 INFO L262 TraceCheckSpWp]: Trace formula consists of 255 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-19 04:51:58,032 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 04:51:58,048 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2023-11-19 04:51:58,071 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 [2023-11-19 04:51:58,109 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 [2023-11-19 04:51:58,125 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 04:51:58,126 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 04:51:58,126 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-19 04:51:58,126 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1267200190] [2023-11-19 04:51:58,126 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1267200190] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 04:51:58,126 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 04:51:58,127 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 04:51:58,127 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1052867840] [2023-11-19 04:51:58,127 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 04:51:58,129 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-19 04:51:58,129 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-19 04:51:58,129 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-19 04:51:58,130 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-19 04:51:58,130 INFO L87 Difference]: Start difference. First operand 534 states and 568 transitions. Second operand has 5 states, 4 states have (on average 14.75) internal successors, (59), 5 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 04:52:00,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 04:52:00,217 INFO L93 Difference]: Finished difference Result 533 states and 567 transitions. [2023-11-19 04:52:00,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-19 04:52:00,218 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 14.75) internal successors, (59), 5 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 59 [2023-11-19 04:52:00,219 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 04:52:00,222 INFO L225 Difference]: With dead ends: 533 [2023-11-19 04:52:00,222 INFO L226 Difference]: Without dead ends: 533 [2023-11-19 04:52:00,223 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-11-19 04:52:00,224 INFO L413 NwaCegarLoop]: 515 mSDtfsCounter, 4 mSDsluCounter, 822 mSDsCounter, 0 mSdLazyCounter, 728 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 1337 SdHoareTripleChecker+Invalid, 729 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 728 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2023-11-19 04:52:00,224 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 1337 Invalid, 729 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 728 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2023-11-19 04:52:00,226 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 533 states. [2023-11-19 04:52:00,236 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 533 to 533. [2023-11-19 04:52:00,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 533 states, 340 states have (on average 1.5911764705882352) internal successors, (541), 527 states have internal predecessors, (541), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 4 states have call predecessors, (13), 13 states have call successors, (13) [2023-11-19 04:52:00,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 533 states to 533 states and 567 transitions. [2023-11-19 04:52:00,240 INFO L78 Accepts]: Start accepts. Automaton has 533 states and 567 transitions. Word has length 59 [2023-11-19 04:52:00,240 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 04:52:00,241 INFO L495 AbstractCegarLoop]: Abstraction has 533 states and 567 transitions. [2023-11-19 04:52:00,241 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 14.75) internal successors, (59), 5 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 04:52:00,241 INFO L276 IsEmpty]: Start isEmpty. Operand 533 states and 567 transitions. [2023-11-19 04:52:00,242 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2023-11-19 04:52:00,242 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:52:00,242 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 04:52:00,248 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af045435-3aee-4c47-9158-60589698bbb1/bin/utaipan-verify-t7M7D8N6sZ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2023-11-19 04:52:00,448 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af045435-3aee-4c47-9158-60589698bbb1/bin/utaipan-verify-t7M7D8N6sZ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-19 04:52:00,448 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr67REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 327 more)] === [2023-11-19 04:52:00,449 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:52:00,449 INFO L85 PathProgramCache]: Analyzing trace with hash -313883617, now seen corresponding path program 1 times [2023-11-19 04:52:00,450 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-19 04:52:00,450 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [318887434] [2023-11-19 04:52:00,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:52:00,450 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-19 04:52:00,450 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af045435-3aee-4c47-9158-60589698bbb1/bin/utaipan-verify-t7M7D8N6sZ/mathsat [2023-11-19 04:52:00,452 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af045435-3aee-4c47-9158-60589698bbb1/bin/utaipan-verify-t7M7D8N6sZ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-19 04:52:00,475 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af045435-3aee-4c47-9158-60589698bbb1/bin/utaipan-verify-t7M7D8N6sZ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2023-11-19 04:52:00,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:52:00,755 INFO L262 TraceCheckSpWp]: Trace formula consists of 255 conjuncts, 10 conjunts are in the unsatisfiable core [2023-11-19 04:52:00,758 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 04:52:00,779 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-11-19 04:52:00,820 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 [2023-11-19 04:52:00,828 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 [2023-11-19 04:52:00,911 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 [2023-11-19 04:52:00,938 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 04:52:00,938 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 04:52:00,938 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-19 04:52:00,939 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [318887434] [2023-11-19 04:52:00,939 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [318887434] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 04:52:00,939 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 04:52:00,939 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 04:52:00,939 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [561895151] [2023-11-19 04:52:00,940 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 04:52:00,940 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-19 04:52:00,940 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-19 04:52:00,941 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-19 04:52:00,941 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-19 04:52:00,942 INFO L87 Difference]: Start difference. First operand 533 states and 567 transitions. Second operand has 5 states, 4 states have (on average 14.75) internal successors, (59), 5 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 04:52:03,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 04:52:03,610 INFO L93 Difference]: Finished difference Result 532 states and 566 transitions. [2023-11-19 04:52:03,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-19 04:52:03,610 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 14.75) internal successors, (59), 5 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 59 [2023-11-19 04:52:03,611 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 04:52:03,614 INFO L225 Difference]: With dead ends: 532 [2023-11-19 04:52:03,614 INFO L226 Difference]: Without dead ends: 532 [2023-11-19 04:52:03,614 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-11-19 04:52:03,615 INFO L413 NwaCegarLoop]: 515 mSDtfsCounter, 2 mSDsluCounter, 832 mSDsCounter, 0 mSdLazyCounter, 716 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 1347 SdHoareTripleChecker+Invalid, 717 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 716 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2023-11-19 04:52:03,616 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 1347 Invalid, 717 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 716 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2023-11-19 04:52:03,617 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 532 states. [2023-11-19 04:52:03,626 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 532 to 532. [2023-11-19 04:52:03,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 532 states, 339 states have (on average 1.592920353982301) internal successors, (540), 526 states have internal predecessors, (540), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 4 states have call predecessors, (13), 13 states have call successors, (13) [2023-11-19 04:52:03,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 532 states to 532 states and 566 transitions. [2023-11-19 04:52:03,637 INFO L78 Accepts]: Start accepts. Automaton has 532 states and 566 transitions. Word has length 59 [2023-11-19 04:52:03,637 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 04:52:03,637 INFO L495 AbstractCegarLoop]: Abstraction has 532 states and 566 transitions. [2023-11-19 04:52:03,638 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 14.75) internal successors, (59), 5 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 04:52:03,638 INFO L276 IsEmpty]: Start isEmpty. Operand 532 states and 566 transitions. [2023-11-19 04:52:03,639 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2023-11-19 04:52:03,640 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:52:03,640 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 04:52:03,655 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af045435-3aee-4c47-9158-60589698bbb1/bin/utaipan-verify-t7M7D8N6sZ/mathsat -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)] Forceful destruction successful, exit code 0 [2023-11-19 04:52:03,846 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af045435-3aee-4c47-9158-60589698bbb1/bin/utaipan-verify-t7M7D8N6sZ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-19 04:52:03,846 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr70REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 327 more)] === [2023-11-19 04:52:03,847 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:52:03,847 INFO L85 PathProgramCache]: Analyzing trace with hash -713533659, now seen corresponding path program 1 times [2023-11-19 04:52:03,847 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-19 04:52:03,847 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [986587332] [2023-11-19 04:52:03,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:52:03,848 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-19 04:52:03,848 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af045435-3aee-4c47-9158-60589698bbb1/bin/utaipan-verify-t7M7D8N6sZ/mathsat [2023-11-19 04:52:03,850 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af045435-3aee-4c47-9158-60589698bbb1/bin/utaipan-verify-t7M7D8N6sZ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-19 04:52:03,851 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af045435-3aee-4c47-9158-60589698bbb1/bin/utaipan-verify-t7M7D8N6sZ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2023-11-19 04:52:04,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:52:04,174 INFO L262 TraceCheckSpWp]: Trace formula consists of 282 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-19 04:52:04,177 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 04:52:04,215 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 04:52:04,216 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 04:52:04,216 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-19 04:52:04,216 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [986587332] [2023-11-19 04:52:04,216 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [986587332] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 04:52:04,218 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 04:52:04,218 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 04:52:04,218 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1363201359] [2023-11-19 04:52:04,219 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 04:52:04,220 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 04:52:04,220 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-19 04:52:04,221 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 04:52:04,222 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-19 04:52:04,222 INFO L87 Difference]: Start difference. First operand 532 states and 566 transitions. Second operand has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-19 04:52:04,284 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 04:52:04,284 INFO L93 Difference]: Finished difference Result 535 states and 570 transitions. [2023-11-19 04:52:04,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 04:52:04,285 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 67 [2023-11-19 04:52:04,286 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 04:52:04,294 INFO L225 Difference]: With dead ends: 535 [2023-11-19 04:52:04,294 INFO L226 Difference]: Without dead ends: 535 [2023-11-19 04:52:04,295 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 64 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-19 04:52:04,296 INFO L413 NwaCegarLoop]: 515 mSDtfsCounter, 2 mSDsluCounter, 1025 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 1540 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 04:52:04,296 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 1540 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 04:52:04,299 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 535 states. [2023-11-19 04:52:04,313 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 535 to 535. [2023-11-19 04:52:04,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 535 states, 341 states have (on average 1.5923753665689149) internal successors, (543), 529 states have internal predecessors, (543), 13 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (14), 4 states have call predecessors, (14), 13 states have call successors, (14) [2023-11-19 04:52:04,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 535 states to 535 states and 570 transitions. [2023-11-19 04:52:04,317 INFO L78 Accepts]: Start accepts. Automaton has 535 states and 570 transitions. Word has length 67 [2023-11-19 04:52:04,317 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 04:52:04,318 INFO L495 AbstractCegarLoop]: Abstraction has 535 states and 570 transitions. [2023-11-19 04:52:04,318 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-19 04:52:04,318 INFO L276 IsEmpty]: Start isEmpty. Operand 535 states and 570 transitions. [2023-11-19 04:52:04,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2023-11-19 04:52:04,319 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:52:04,319 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 04:52:04,331 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af045435-3aee-4c47-9158-60589698bbb1/bin/utaipan-verify-t7M7D8N6sZ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2023-11-19 04:52:04,526 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af045435-3aee-4c47-9158-60589698bbb1/bin/utaipan-verify-t7M7D8N6sZ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-19 04:52:04,526 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr70REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 327 more)] === [2023-11-19 04:52:04,527 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:52:04,527 INFO L85 PathProgramCache]: Analyzing trace with hash 930817922, now seen corresponding path program 1 times [2023-11-19 04:52:04,528 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-19 04:52:04,528 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1041386126] [2023-11-19 04:52:04,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:52:04,528 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-19 04:52:04,528 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af045435-3aee-4c47-9158-60589698bbb1/bin/utaipan-verify-t7M7D8N6sZ/mathsat [2023-11-19 04:52:04,529 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af045435-3aee-4c47-9158-60589698bbb1/bin/utaipan-verify-t7M7D8N6sZ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-19 04:52:04,555 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af045435-3aee-4c47-9158-60589698bbb1/bin/utaipan-verify-t7M7D8N6sZ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2023-11-19 04:52:04,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:52:04,830 INFO L262 TraceCheckSpWp]: Trace formula consists of 293 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-19 04:52:04,832 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 04:52:04,866 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 04:52:04,867 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 04:52:04,949 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 04:52:04,949 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-19 04:52:04,949 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1041386126] [2023-11-19 04:52:04,949 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1041386126] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 04:52:04,950 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [176463280] [2023-11-19 04:52:04,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:52:04,950 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-11-19 04:52:04,950 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af045435-3aee-4c47-9158-60589698bbb1/bin/utaipan-verify-t7M7D8N6sZ/cvc4 [2023-11-19 04:52:04,957 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af045435-3aee-4c47-9158-60589698bbb1/bin/utaipan-verify-t7M7D8N6sZ/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-11-19 04:52:04,975 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af045435-3aee-4c47-9158-60589698bbb1/bin/utaipan-verify-t7M7D8N6sZ/cvc4 --incremental --print-success --lang smt (17)] Waiting until timeout for monitored process [2023-11-19 04:52:05,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:52:05,434 INFO L262 TraceCheckSpWp]: Trace formula consists of 293 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-19 04:52:05,437 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 04:52:05,457 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 04:52:05,457 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 04:52:05,529 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 04:52:05,530 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [176463280] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 04:52:05,530 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2090947468] [2023-11-19 04:52:05,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:52:05,531 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 04:52:05,531 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af045435-3aee-4c47-9158-60589698bbb1/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 04:52:05,533 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af045435-3aee-4c47-9158-60589698bbb1/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 04:52:05,539 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af045435-3aee-4c47-9158-60589698bbb1/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2023-11-19 04:52:05,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:52:05,859 INFO L262 TraceCheckSpWp]: Trace formula consists of 293 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-19 04:52:05,861 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 04:52:05,883 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 04:52:05,883 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 04:52:05,924 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 04:52:05,925 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2090947468] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 04:52:05,925 INFO L185 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2023-11-19 04:52:05,925 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5, 5, 5, 5] total 8 [2023-11-19 04:52:05,926 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1774102429] [2023-11-19 04:52:05,926 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2023-11-19 04:52:05,927 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-19 04:52:05,927 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-19 04:52:05,928 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-19 04:52:05,928 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-11-19 04:52:05,928 INFO L87 Difference]: Start difference. First operand 535 states and 570 transitions. Second operand has 8 states, 8 states have (on average 8.75) internal successors, (70), 8 states have internal predecessors, (70), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-19 04:52:06,154 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 04:52:06,154 INFO L93 Difference]: Finished difference Result 547 states and 587 transitions. [2023-11-19 04:52:06,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-19 04:52:06,155 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 8.75) internal successors, (70), 8 states have internal predecessors, (70), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 68 [2023-11-19 04:52:06,156 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 04:52:06,159 INFO L225 Difference]: With dead ends: 547 [2023-11-19 04:52:06,160 INFO L226 Difference]: Without dead ends: 547 [2023-11-19 04:52:06,160 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 407 GetRequests, 396 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=62, Invalid=94, Unknown=0, NotChecked=0, Total=156 [2023-11-19 04:52:06,161 INFO L413 NwaCegarLoop]: 516 mSDtfsCounter, 10 mSDsluCounter, 1028 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 1544 SdHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 04:52:06,161 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 1544 Invalid, 58 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 04:52:06,162 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 547 states. [2023-11-19 04:52:06,173 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 547 to 545. [2023-11-19 04:52:06,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 545 states, 350 states have (on average 1.5942857142857143) internal successors, (558), 538 states have internal predecessors, (558), 13 states have call successors, (13), 3 states have call predecessors, (13), 4 states have return successors, (14), 4 states have call predecessors, (14), 13 states have call successors, (14) [2023-11-19 04:52:06,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 545 states to 545 states and 585 transitions. [2023-11-19 04:52:06,177 INFO L78 Accepts]: Start accepts. Automaton has 545 states and 585 transitions. Word has length 68 [2023-11-19 04:52:06,178 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 04:52:06,178 INFO L495 AbstractCegarLoop]: Abstraction has 545 states and 585 transitions. [2023-11-19 04:52:06,178 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.75) internal successors, (70), 8 states have internal predecessors, (70), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-19 04:52:06,178 INFO L276 IsEmpty]: Start isEmpty. Operand 545 states and 585 transitions. [2023-11-19 04:52:06,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2023-11-19 04:52:06,179 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:52:06,179 INFO L195 NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 04:52:06,191 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af045435-3aee-4c47-9158-60589698bbb1/bin/utaipan-verify-t7M7D8N6sZ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2023-11-19 04:52:06,415 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af045435-3aee-4c47-9158-60589698bbb1/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2023-11-19 04:52:06,590 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af045435-3aee-4c47-9158-60589698bbb1/bin/utaipan-verify-t7M7D8N6sZ/cvc4 --incremental --print-success --lang smt (17)] Forceful destruction successful, exit code 0 [2023-11-19 04:52:06,786 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af045435-3aee-4c47-9158-60589698bbb1/bin/utaipan-verify-t7M7D8N6sZ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af045435-3aee-4c47-9158-60589698bbb1/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true,17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af045435-3aee-4c47-9158-60589698bbb1/bin/utaipan-verify-t7M7D8N6sZ/cvc4 --incremental --print-success --lang smt [2023-11-19 04:52:06,787 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr70REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 327 more)] === [2023-11-19 04:52:06,787 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:52:06,787 INFO L85 PathProgramCache]: Analyzing trace with hash -1479014811, now seen corresponding path program 2 times [2023-11-19 04:52:06,788 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-19 04:52:06,788 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1865790876] [2023-11-19 04:52:06,788 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-19 04:52:06,788 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-19 04:52:06,788 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af045435-3aee-4c47-9158-60589698bbb1/bin/utaipan-verify-t7M7D8N6sZ/mathsat [2023-11-19 04:52:06,790 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af045435-3aee-4c47-9158-60589698bbb1/bin/utaipan-verify-t7M7D8N6sZ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-19 04:52:06,793 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af045435-3aee-4c47-9158-60589698bbb1/bin/utaipan-verify-t7M7D8N6sZ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2023-11-19 04:52:07,244 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-19 04:52:07,244 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-19 04:52:07,259 INFO L262 TraceCheckSpWp]: Trace formula consists of 326 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-19 04:52:07,263 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 04:52:07,371 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 04:52:07,371 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 04:52:07,638 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 04:52:07,639 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-19 04:52:07,639 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1865790876] [2023-11-19 04:52:07,639 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1865790876] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 04:52:07,639 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1899998372] [2023-11-19 04:52:07,640 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-19 04:52:07,640 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-11-19 04:52:07,640 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af045435-3aee-4c47-9158-60589698bbb1/bin/utaipan-verify-t7M7D8N6sZ/cvc4 [2023-11-19 04:52:07,641 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af045435-3aee-4c47-9158-60589698bbb1/bin/utaipan-verify-t7M7D8N6sZ/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-11-19 04:52:07,664 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af045435-3aee-4c47-9158-60589698bbb1/bin/utaipan-verify-t7M7D8N6sZ/cvc4 --incremental --print-success --lang smt (20)] Waiting until timeout for monitored process [2023-11-19 04:52:08,947 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-19 04:52:08,948 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-19 04:52:08,957 INFO L262 TraceCheckSpWp]: Trace formula consists of 326 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-19 04:52:08,960 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 04:52:08,996 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 04:52:08,998 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 04:52:09,096 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 04:52:09,097 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1899998372] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 04:52:09,097 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1191807012] [2023-11-19 04:52:09,097 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-19 04:52:09,097 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 04:52:09,098 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af045435-3aee-4c47-9158-60589698bbb1/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 04:52:09,099 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af045435-3aee-4c47-9158-60589698bbb1/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 04:52:09,123 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af045435-3aee-4c47-9158-60589698bbb1/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process