./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test7-1.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_a9a57712-5c05-4b13-9706-e4bf2ebadec7/bin/utaipan-verify-t7M7D8N6sZ/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9a57712-5c05-4b13-9706-e4bf2ebadec7/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_a9a57712-5c05-4b13-9706-e4bf2ebadec7/bin/utaipan-verify-t7M7D8N6sZ/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9a57712-5c05-4b13-9706-e4bf2ebadec7/bin/utaipan-verify-t7M7D8N6sZ/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test7-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9a57712-5c05-4b13-9706-e4bf2ebadec7/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_a9a57712-5c05-4b13-9706-e4bf2ebadec7/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 22b4144b7005899e18ff8135fa52f12863f7106dbe1ddb808d25d8593c5f8fc4 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 04:50:00,560 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 04:50:00,654 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9a57712-5c05-4b13-9706-e4bf2ebadec7/bin/utaipan-verify-t7M7D8N6sZ/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2023-11-19 04:50:00,662 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 04:50:00,662 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 04:50:00,707 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 04:50:00,708 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 04:50:00,709 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 04:50:00,710 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 04:50:00,716 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 04:50:00,716 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-19 04:50:00,717 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-19 04:50:00,717 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-19 04:50:00,719 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-19 04:50:00,720 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-19 04:50:00,720 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-19 04:50:00,721 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-19 04:50:00,723 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-19 04:50:00,723 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-19 04:50:00,724 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-19 04:50:00,724 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-19 04:50:00,725 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-19 04:50:00,726 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-19 04:50:00,726 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-19 04:50:00,728 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 04:50:00,728 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-19 04:50:00,729 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 04:50:00,729 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-19 04:50:00,730 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 04:50:00,730 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-19 04:50:00,732 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-19 04:50:00,732 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-19 04:50:00,732 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 04:50:00,733 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-19 04:50:00,733 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-19 04:50:00,733 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-19 04:50:00,733 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 04:50:00,734 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 04:50:00,734 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 04:50:00,734 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 04:50:00,735 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 04:50:00,735 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 04:50:00,736 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-19 04:50:00,736 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 04:50:00,737 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-19 04:50:00,737 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 04:50:00,737 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_a9a57712-5c05-4b13-9706-e4bf2ebadec7/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9a57712-5c05-4b13-9706-e4bf2ebadec7/bin/utaipan-verify-t7M7D8N6sZ Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 22b4144b7005899e18ff8135fa52f12863f7106dbe1ddb808d25d8593c5f8fc4 [2023-11-19 04:50:01,059 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 04:50:01,096 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 04:50:01,099 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 04:50:01,100 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 04:50:01,102 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 04:50:01,103 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9a57712-5c05-4b13-9706-e4bf2ebadec7/bin/utaipan-verify-t7M7D8N6sZ/../../sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test7-1.i [2023-11-19 04:50:04,764 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 04:50:05,169 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 04:50:05,170 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9a57712-5c05-4b13-9706-e4bf2ebadec7/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test7-1.i [2023-11-19 04:50:05,199 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9a57712-5c05-4b13-9706-e4bf2ebadec7/bin/utaipan-verify-t7M7D8N6sZ/data/80b868820/dd2c83a428fd42138d3605b946ad15ac/FLAG202c7285c [2023-11-19 04:50:05,369 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9a57712-5c05-4b13-9706-e4bf2ebadec7/bin/utaipan-verify-t7M7D8N6sZ/data/80b868820/dd2c83a428fd42138d3605b946ad15ac [2023-11-19 04:50:05,372 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 04:50:05,374 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 04:50:05,376 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 04:50:05,376 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 04:50:05,390 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 04:50:05,391 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 04:50:05" (1/1) ... [2023-11-19 04:50:05,393 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1b7835c8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:50:05, skipping insertion in model container [2023-11-19 04:50:05,393 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 04:50:05" (1/1) ... [2023-11-19 04:50:05,486 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 04:50:06,307 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 04:50:06,325 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 04:50:06,326 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@7e0a9781 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:50:06, skipping insertion in model container [2023-11-19 04:50:06,326 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 04:50:06,327 INFO L186 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2023-11-19 04:50:06,330 INFO L158 Benchmark]: Toolchain (without parser) took 954.31ms. Allocated memory is still 134.2MB. Free memory was 92.2MB in the beginning and 73.0MB in the end (delta: 19.2MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2023-11-19 04:50:06,330 INFO L158 Benchmark]: CDTParser took 0.29ms. Allocated memory is still 94.4MB. Free memory is still 40.3MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-19 04:50:06,331 INFO L158 Benchmark]: CACSL2BoogieTranslator took 951.13ms. Allocated memory is still 134.2MB. Free memory was 91.8MB in the beginning and 73.0MB in the end (delta: 18.8MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2023-11-19 04:50:06,334 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29ms. Allocated memory is still 94.4MB. Free memory is still 40.3MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 951.13ms. Allocated memory is still 134.2MB. Free memory was 91.8MB in the beginning and 73.0MB in the end (delta: 18.8MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 716]: 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_a9a57712-5c05-4b13-9706-e4bf2ebadec7/bin/utaipan-verify-t7M7D8N6sZ/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9a57712-5c05-4b13-9706-e4bf2ebadec7/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_a9a57712-5c05-4b13-9706-e4bf2ebadec7/bin/utaipan-verify-t7M7D8N6sZ/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9a57712-5c05-4b13-9706-e4bf2ebadec7/bin/utaipan-verify-t7M7D8N6sZ/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test7-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9a57712-5c05-4b13-9706-e4bf2ebadec7/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_a9a57712-5c05-4b13-9706-e4bf2ebadec7/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 22b4144b7005899e18ff8135fa52f12863f7106dbe1ddb808d25d8593c5f8fc4 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 04:50:09,472 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 04:50:09,646 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9a57712-5c05-4b13-9706-e4bf2ebadec7/bin/utaipan-verify-t7M7D8N6sZ/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf [2023-11-19 04:50:09,656 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 04:50:09,657 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 04:50:09,717 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 04:50:09,718 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 04:50:09,719 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 04:50:09,721 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 04:50:09,727 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 04:50:09,728 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-19 04:50:09,728 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-19 04:50:09,729 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-19 04:50:09,731 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-19 04:50:09,732 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-19 04:50:09,732 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-19 04:50:09,733 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-19 04:50:09,734 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-19 04:50:09,735 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 04:50:09,737 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-19 04:50:09,737 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 04:50:09,738 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-19 04:50:09,739 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 04:50:09,739 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-19 04:50:09,740 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-19 04:50:09,740 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-19 04:50:09,741 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 04:50:09,741 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-19 04:50:09,742 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-11-19 04:50:09,742 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-11-19 04:50:09,744 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-19 04:50:09,745 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-19 04:50:09,745 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 04:50:09,746 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 04:50:09,746 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-19 04:50:09,746 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 04:50:09,747 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 04:50:09,748 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 04:50:09,748 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 04:50:09,748 INFO L153 SettingsManager]: * Trace refinement strategy=WALRUS [2023-11-19 04:50:09,749 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-11-19 04:50:09,749 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-19 04:50:09,749 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 04:50:09,750 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_a9a57712-5c05-4b13-9706-e4bf2ebadec7/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9a57712-5c05-4b13-9706-e4bf2ebadec7/bin/utaipan-verify-t7M7D8N6sZ Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 22b4144b7005899e18ff8135fa52f12863f7106dbe1ddb808d25d8593c5f8fc4 [2023-11-19 04:50:10,261 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 04:50:10,299 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 04:50:10,303 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 04:50:10,305 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 04:50:10,305 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 04:50:10,307 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9a57712-5c05-4b13-9706-e4bf2ebadec7/bin/utaipan-verify-t7M7D8N6sZ/../../sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test7-1.i [2023-11-19 04:50:14,090 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 04:50:14,673 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 04:50:14,673 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9a57712-5c05-4b13-9706-e4bf2ebadec7/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test7-1.i [2023-11-19 04:50:14,709 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9a57712-5c05-4b13-9706-e4bf2ebadec7/bin/utaipan-verify-t7M7D8N6sZ/data/67a9cc775/ec686b56e0d04df3b1ba07e7e434c8b2/FLAG37f00ce7d [2023-11-19 04:50:14,734 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9a57712-5c05-4b13-9706-e4bf2ebadec7/bin/utaipan-verify-t7M7D8N6sZ/data/67a9cc775/ec686b56e0d04df3b1ba07e7e434c8b2 [2023-11-19 04:50:14,740 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 04:50:14,742 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 04:50:14,745 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 04:50:14,746 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 04:50:14,752 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 04:50:14,753 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 04:50:14" (1/1) ... [2023-11-19 04:50:14,754 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3eac1ba3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:50:14, skipping insertion in model container [2023-11-19 04:50:14,754 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 04:50:14" (1/1) ... [2023-11-19 04:50:14,842 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 04:50:15,561 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 04:50:15,578 INFO L199 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2023-11-19 04:50:15,596 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 04:50:15,690 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 04:50:15,698 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 04:50:15,875 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 04:50:15,922 WARN L675 CHandler]: The function memcmp is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 04:50:15,930 INFO L206 MainTranslator]: Completed translation [2023-11-19 04:50:15,930 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:50:15 WrapperNode [2023-11-19 04:50:15,931 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 04:50:15,932 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 04:50:15,932 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 04:50:15,932 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 04:50:15,940 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:50:15" (1/1) ... [2023-11-19 04:50:15,989 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:50:15" (1/1) ... [2023-11-19 04:50:16,113 INFO L138 Inliner]: procedures = 179, calls = 280, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 1017 [2023-11-19 04:50:16,113 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 04:50:16,114 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 04:50:16,114 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 04:50:16,114 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 04:50:16,125 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:50:15" (1/1) ... [2023-11-19 04:50:16,126 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:50:15" (1/1) ... [2023-11-19 04:50:16,145 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:50:15" (1/1) ... [2023-11-19 04:50:16,159 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:50:15" (1/1) ... [2023-11-19 04:50:16,255 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:50:15" (1/1) ... [2023-11-19 04:50:16,270 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:50:15" (1/1) ... [2023-11-19 04:50:16,277 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:50:15" (1/1) ... [2023-11-19 04:50:16,287 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:50:15" (1/1) ... [2023-11-19 04:50:16,317 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 04:50:16,318 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 04:50:16,318 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 04:50:16,318 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 04:50:16,319 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:50:15" (1/1) ... [2023-11-19 04:50:16,330 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 04:50:16,342 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9a57712-5c05-4b13-9706-e4bf2ebadec7/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 04:50:16,357 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9a57712-5c05-4b13-9706-e4bf2ebadec7/bin/utaipan-verify-t7M7D8N6sZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 04:50:16,379 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9a57712-5c05-4b13-9706-e4bf2ebadec7/bin/utaipan-verify-t7M7D8N6sZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 04:50:16,412 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-11-19 04:50:16,412 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-11-19 04:50:16,413 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2023-11-19 04:50:16,413 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2023-11-19 04:50:16,413 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2023-11-19 04:50:16,413 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2023-11-19 04:50:16,414 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-19 04:50:16,414 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 04:50:16,414 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-19 04:50:16,414 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-19 04:50:16,415 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2023-11-19 04:50:16,415 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-19 04:50:16,415 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-19 04:50:16,415 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2023-11-19 04:50:16,416 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2023-11-19 04:50:16,416 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 04:50:16,416 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 04:50:16,741 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 04:50:16,744 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 04:50:16,792 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2023-11-19 04:50:23,415 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 04:50:23,451 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 04:50:23,452 INFO L302 CfgBuilder]: Removed 63 assume(true) statements. [2023-11-19 04:50:23,469 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 04:50:23 BoogieIcfgContainer [2023-11-19 04:50:23,470 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 04:50:23,476 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 04:50:23,476 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 04:50:23,481 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 04:50:23,484 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 04:50:14" (1/3) ... [2023-11-19 04:50:23,485 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7b4be345 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 04:50:23, skipping insertion in model container [2023-11-19 04:50:23,485 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:50:15" (2/3) ... [2023-11-19 04:50:23,487 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7b4be345 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 04:50:23, skipping insertion in model container [2023-11-19 04:50:23,488 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 04:50:23" (3/3) ... [2023-11-19 04:50:23,489 INFO L112 eAbstractionObserver]: Analyzing ICFG uthash_JEN_test7-1.i [2023-11-19 04:50:23,513 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 04:50:23,514 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 529 error locations. [2023-11-19 04:50:23,618 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 04:50:23,627 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;@52341568, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-19 04:50:23,627 INFO L358 AbstractCegarLoop]: Starting to check reachability of 529 error locations. [2023-11-19 04:50:23,641 INFO L276 IsEmpty]: Start isEmpty. Operand has 1061 states, 527 states have (on average 2.2314990512333965) internal successors, (1176), 1054 states have internal predecessors, (1176), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2023-11-19 04:50:23,650 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2023-11-19 04:50:23,650 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:50:23,652 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2023-11-19 04:50:23,652 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 526 more)] === [2023-11-19 04:50:23,661 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:50:23,662 INFO L85 PathProgramCache]: Analyzing trace with hash 47731, now seen corresponding path program 1 times [2023-11-19 04:50:23,677 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-19 04:50:23,678 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2041294532] [2023-11-19 04:50:23,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:50:23,679 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 04:50:23,679 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9a57712-5c05-4b13-9706-e4bf2ebadec7/bin/utaipan-verify-t7M7D8N6sZ/mathsat [2023-11-19 04:50:23,680 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9a57712-5c05-4b13-9706-e4bf2ebadec7/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 04:50:23,684 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9a57712-5c05-4b13-9706-e4bf2ebadec7/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 04:50:23,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:50:23,924 INFO L262 TraceCheckSpWp]: Trace formula consists of 23 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-19 04:50:23,951 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 04:50:24,047 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 04:50:24,066 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 04:50:24,067 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 04:50:24,068 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-19 04:50:24,068 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2041294532] [2023-11-19 04:50:24,069 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2041294532] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 04:50:24,069 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 04:50:24,069 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 04:50:24,072 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1756316820] [2023-11-19 04:50:24,073 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 04:50:24,079 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 04:50:24,080 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-19 04:50:24,130 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 04:50:24,131 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 04:50:24,136 INFO L87 Difference]: Start difference. First operand has 1061 states, 527 states have (on average 2.2314990512333965) internal successors, (1176), 1054 states have internal predecessors, (1176), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 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 04:50:26,766 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 04:50:26,766 INFO L93 Difference]: Finished difference Result 1054 states and 1109 transitions. [2023-11-19 04:50:26,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 04:50:26,769 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 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 3 [2023-11-19 04:50:26,769 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 04:50:26,798 INFO L225 Difference]: With dead ends: 1054 [2023-11-19 04:50:26,799 INFO L226 Difference]: Without dead ends: 1052 [2023-11-19 04:50:26,801 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 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 04:50:26,806 INFO L413 NwaCegarLoop]: 628 mSDtfsCounter, 974 mSDsluCounter, 58 mSDsCounter, 0 mSdLazyCounter, 538 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 977 SdHoareTripleChecker+Valid, 686 SdHoareTripleChecker+Invalid, 554 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 538 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2023-11-19 04:50:26,807 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [977 Valid, 686 Invalid, 554 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 538 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2023-11-19 04:50:26,835 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1052 states. [2023-11-19 04:50:26,923 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1052 to 1043. [2023-11-19 04:50:26,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1043 states, 527 states have (on average 2.0702087286527515) internal successors, (1091), 1037 states have internal predecessors, (1091), 5 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-19 04:50:26,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1043 states to 1043 states and 1099 transitions. [2023-11-19 04:50:26,950 INFO L78 Accepts]: Start accepts. Automaton has 1043 states and 1099 transitions. Word has length 3 [2023-11-19 04:50:26,951 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 04:50:26,951 INFO L495 AbstractCegarLoop]: Abstraction has 1043 states and 1099 transitions. [2023-11-19 04:50:26,951 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 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 04:50:26,952 INFO L276 IsEmpty]: Start isEmpty. Operand 1043 states and 1099 transitions. [2023-11-19 04:50:26,953 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2023-11-19 04:50:26,953 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:50:26,953 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2023-11-19 04:50:26,958 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9a57712-5c05-4b13-9706-e4bf2ebadec7/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 04:50:27,155 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9a57712-5c05-4b13-9706-e4bf2ebadec7/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 04:50:27,156 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 526 more)] === [2023-11-19 04:50:27,156 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:50:27,157 INFO L85 PathProgramCache]: Analyzing trace with hash 47732, now seen corresponding path program 1 times [2023-11-19 04:50:27,157 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-19 04:50:27,158 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1622180550] [2023-11-19 04:50:27,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:50:27,158 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 04:50:27,158 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9a57712-5c05-4b13-9706-e4bf2ebadec7/bin/utaipan-verify-t7M7D8N6sZ/mathsat [2023-11-19 04:50:27,160 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9a57712-5c05-4b13-9706-e4bf2ebadec7/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 04:50:27,168 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9a57712-5c05-4b13-9706-e4bf2ebadec7/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 04:50:27,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:50:27,303 INFO L262 TraceCheckSpWp]: Trace formula consists of 23 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-19 04:50:27,306 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 04:50:27,321 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 04:50:27,336 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 04:50:27,337 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 04:50:27,337 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-19 04:50:27,337 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1622180550] [2023-11-19 04:50:27,338 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1622180550] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 04:50:27,338 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 04:50:27,338 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 04:50:27,338 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2090487142] [2023-11-19 04:50:27,339 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 04:50:27,340 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 04:50:27,340 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-19 04:50:27,341 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 04:50:27,341 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 04:50:27,342 INFO L87 Difference]: Start difference. First operand 1043 states and 1099 transitions. Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 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 04:50:31,303 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 04:50:31,304 INFO L93 Difference]: Finished difference Result 1436 states and 1523 transitions. [2023-11-19 04:50:31,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 04:50:31,305 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 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 3 [2023-11-19 04:50:31,305 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 04:50:31,315 INFO L225 Difference]: With dead ends: 1436 [2023-11-19 04:50:31,315 INFO L226 Difference]: Without dead ends: 1436 [2023-11-19 04:50:31,316 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 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 04:50:31,318 INFO L413 NwaCegarLoop]: 907 mSDtfsCounter, 422 mSDsluCounter, 571 mSDsCounter, 0 mSdLazyCounter, 698 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 422 SdHoareTripleChecker+Valid, 1478 SdHoareTripleChecker+Invalid, 703 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 698 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time [2023-11-19 04:50:31,318 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [422 Valid, 1478 Invalid, 703 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 698 Invalid, 0 Unknown, 0 Unchecked, 3.9s Time] [2023-11-19 04:50:31,324 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1436 states. [2023-11-19 04:50:31,360 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1436 to 1249. [2023-11-19 04:50:31,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1249 states, 734 states have (on average 2.055858310626703) internal successors, (1509), 1243 states have internal predecessors, (1509), 5 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-19 04:50:31,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1249 states to 1249 states and 1517 transitions. [2023-11-19 04:50:31,372 INFO L78 Accepts]: Start accepts. Automaton has 1249 states and 1517 transitions. Word has length 3 [2023-11-19 04:50:31,372 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 04:50:31,373 INFO L495 AbstractCegarLoop]: Abstraction has 1249 states and 1517 transitions. [2023-11-19 04:50:31,373 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 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 04:50:31,373 INFO L276 IsEmpty]: Start isEmpty. Operand 1249 states and 1517 transitions. [2023-11-19 04:50:31,373 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2023-11-19 04:50:31,374 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:50:31,374 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-19 04:50:31,377 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9a57712-5c05-4b13-9706-e4bf2ebadec7/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)] Ended with exit code 0 [2023-11-19 04:50:31,577 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9a57712-5c05-4b13-9706-e4bf2ebadec7/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 04:50:31,577 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 526 more)] === [2023-11-19 04:50:31,578 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:50:31,578 INFO L85 PathProgramCache]: Analyzing trace with hash 1130822653, now seen corresponding path program 1 times [2023-11-19 04:50:31,579 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-19 04:50:31,579 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1491123233] [2023-11-19 04:50:31,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:50:31,580 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 04:50:31,580 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9a57712-5c05-4b13-9706-e4bf2ebadec7/bin/utaipan-verify-t7M7D8N6sZ/mathsat [2023-11-19 04:50:31,585 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9a57712-5c05-4b13-9706-e4bf2ebadec7/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 04:50:31,611 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9a57712-5c05-4b13-9706-e4bf2ebadec7/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 04:50:31,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:50:31,762 INFO L262 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-19 04:50:31,765 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 04:50:31,786 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 04:50:31,803 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 04:50:31,896 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 04:50:31,898 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 04:50:31,929 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2023-11-19 04:50:31,930 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 04:50:31,959 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 04:50:31,959 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 04:50:31,959 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-19 04:50:31,960 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1491123233] [2023-11-19 04:50:31,960 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1491123233] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 04:50:31,960 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 04:50:31,960 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 04:50:31,961 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [368409634] [2023-11-19 04:50:31,961 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 04:50:31,961 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 04:50:31,961 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-19 04:50:31,962 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 04:50:31,962 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-19 04:50:31,963 INFO L87 Difference]: Start difference. First operand 1249 states and 1517 transitions. Second operand has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 04:50:35,765 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 04:50:35,765 INFO L93 Difference]: Finished difference Result 1252 states and 1522 transitions. [2023-11-19 04:50:35,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 04:50:35,766 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2023-11-19 04:50:35,766 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 04:50:35,775 INFO L225 Difference]: With dead ends: 1252 [2023-11-19 04:50:35,775 INFO L226 Difference]: Without dead ends: 1252 [2023-11-19 04:50:35,775 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 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 04:50:35,777 INFO L413 NwaCegarLoop]: 357 mSDtfsCounter, 2022 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 814 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2025 SdHoareTripleChecker+Valid, 393 SdHoareTripleChecker+Invalid, 838 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 814 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2023-11-19 04:50:35,778 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2025 Valid, 393 Invalid, 838 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 814 Invalid, 0 Unknown, 0 Unchecked, 3.7s Time] [2023-11-19 04:50:35,782 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1252 states. [2023-11-19 04:50:35,804 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1252 to 1032. [2023-11-19 04:50:35,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1032 states, 527 states have (on average 2.047438330170778) internal successors, (1079), 1026 states have internal predecessors, (1079), 5 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-19 04:50:35,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1032 states to 1032 states and 1087 transitions. [2023-11-19 04:50:35,812 INFO L78 Accepts]: Start accepts. Automaton has 1032 states and 1087 transitions. Word has length 7 [2023-11-19 04:50:35,812 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 04:50:35,813 INFO L495 AbstractCegarLoop]: Abstraction has 1032 states and 1087 transitions. [2023-11-19 04:50:35,813 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 04:50:35,813 INFO L276 IsEmpty]: Start isEmpty. Operand 1032 states and 1087 transitions. [2023-11-19 04:50:35,814 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2023-11-19 04:50:35,814 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:50:35,814 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 04:50:35,823 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9a57712-5c05-4b13-9706-e4bf2ebadec7/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 04:50:36,017 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9a57712-5c05-4b13-9706-e4bf2ebadec7/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 04:50:36,018 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 526 more)] === [2023-11-19 04:50:36,018 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:50:36,019 INFO L85 PathProgramCache]: Analyzing trace with hash 695763858, now seen corresponding path program 1 times [2023-11-19 04:50:36,019 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-19 04:50:36,020 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1769336032] [2023-11-19 04:50:36,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:50:36,020 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 04:50:36,020 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9a57712-5c05-4b13-9706-e4bf2ebadec7/bin/utaipan-verify-t7M7D8N6sZ/mathsat [2023-11-19 04:50:36,022 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9a57712-5c05-4b13-9706-e4bf2ebadec7/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 04:50:36,024 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9a57712-5c05-4b13-9706-e4bf2ebadec7/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 04:50:36,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:50:36,152 INFO L262 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-19 04:50:36,155 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 04:50:36,161 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 04:50:36,180 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 04:50:36,180 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 04:50:36,180 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-19 04:50:36,180 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1769336032] [2023-11-19 04:50:36,181 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1769336032] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 04:50:36,181 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 04:50:36,181 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 04:50:36,181 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [808876206] [2023-11-19 04:50:36,181 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 04:50:36,182 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 04:50:36,182 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-19 04:50:36,183 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 04:50:36,183 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 04:50:36,183 INFO L87 Difference]: Start difference. First operand 1032 states and 1087 transitions. Second operand has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 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 04:50:39,070 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 04:50:39,071 INFO L93 Difference]: Finished difference Result 1365 states and 1450 transitions. [2023-11-19 04:50:39,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 04:50:39,073 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 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 8 [2023-11-19 04:50:39,073 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 04:50:39,079 INFO L225 Difference]: With dead ends: 1365 [2023-11-19 04:50:39,079 INFO L226 Difference]: Without dead ends: 1365 [2023-11-19 04:50:39,080 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 6 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 04:50:39,081 INFO L413 NwaCegarLoop]: 937 mSDtfsCounter, 979 mSDsluCounter, 252 mSDsCounter, 0 mSdLazyCounter, 709 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 982 SdHoareTripleChecker+Valid, 1189 SdHoareTripleChecker+Invalid, 760 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 709 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2023-11-19 04:50:39,081 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [982 Valid, 1189 Invalid, 760 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 709 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2023-11-19 04:50:39,085 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1365 states. [2023-11-19 04:50:39,103 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1365 to 985. [2023-11-19 04:50:39,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 985 states, 527 states have (on average 1.9582542694497154) internal successors, (1032), 979 states have internal predecessors, (1032), 5 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-19 04:50:39,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 985 states to 985 states and 1040 transitions. [2023-11-19 04:50:39,109 INFO L78 Accepts]: Start accepts. Automaton has 985 states and 1040 transitions. Word has length 8 [2023-11-19 04:50:39,109 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 04:50:39,110 INFO L495 AbstractCegarLoop]: Abstraction has 985 states and 1040 transitions. [2023-11-19 04:50:39,110 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 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 04:50:39,110 INFO L276 IsEmpty]: Start isEmpty. Operand 985 states and 1040 transitions. [2023-11-19 04:50:39,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2023-11-19 04:50:39,111 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:50:39,111 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 04:50:39,113 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9a57712-5c05-4b13-9706-e4bf2ebadec7/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)] Ended with exit code 0 [2023-11-19 04:50:39,313 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9a57712-5c05-4b13-9706-e4bf2ebadec7/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 04:50:39,314 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 526 more)] === [2023-11-19 04:50:39,314 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:50:39,314 INFO L85 PathProgramCache]: Analyzing trace with hash 695763859, now seen corresponding path program 1 times [2023-11-19 04:50:39,315 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-19 04:50:39,315 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [856769411] [2023-11-19 04:50:39,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:50:39,315 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 04:50:39,316 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9a57712-5c05-4b13-9706-e4bf2ebadec7/bin/utaipan-verify-t7M7D8N6sZ/mathsat [2023-11-19 04:50:39,317 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9a57712-5c05-4b13-9706-e4bf2ebadec7/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 04:50:39,320 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9a57712-5c05-4b13-9706-e4bf2ebadec7/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 04:50:39,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:50:39,455 INFO L262 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-19 04:50:39,458 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 04:50:39,475 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 04:50:39,508 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 04:50:39,509 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 04:50:39,509 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-19 04:50:39,509 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [856769411] [2023-11-19 04:50:39,509 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [856769411] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 04:50:39,510 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 04:50:39,510 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 04:50:39,510 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1890550886] [2023-11-19 04:50:39,510 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 04:50:39,511 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 04:50:39,511 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-19 04:50:39,511 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 04:50:39,511 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 04:50:39,512 INFO L87 Difference]: Start difference. First operand 985 states and 1040 transitions. Second operand has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 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 04:50:43,122 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 04:50:43,122 INFO L93 Difference]: Finished difference Result 1447 states and 1535 transitions. [2023-11-19 04:50:43,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 04:50:43,124 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 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 8 [2023-11-19 04:50:43,124 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 04:50:43,132 INFO L225 Difference]: With dead ends: 1447 [2023-11-19 04:50:43,132 INFO L226 Difference]: Without dead ends: 1447 [2023-11-19 04:50:43,132 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 6 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 04:50:43,133 INFO L413 NwaCegarLoop]: 1143 mSDtfsCounter, 682 mSDsluCounter, 421 mSDsCounter, 0 mSdLazyCounter, 719 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 682 SdHoareTripleChecker+Valid, 1564 SdHoareTripleChecker+Invalid, 731 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 719 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2023-11-19 04:50:43,134 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [682 Valid, 1564 Invalid, 731 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 719 Invalid, 0 Unknown, 0 Unchecked, 3.6s Time] [2023-11-19 04:50:43,138 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1447 states. [2023-11-19 04:50:43,159 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1447 to 1007. [2023-11-19 04:50:43,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1007 states, 559 states have (on average 1.9463327370304115) internal successors, (1088), 1001 states have internal predecessors, (1088), 5 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-19 04:50:43,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1007 states to 1007 states and 1096 transitions. [2023-11-19 04:50:43,167 INFO L78 Accepts]: Start accepts. Automaton has 1007 states and 1096 transitions. Word has length 8 [2023-11-19 04:50:43,167 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 04:50:43,167 INFO L495 AbstractCegarLoop]: Abstraction has 1007 states and 1096 transitions. [2023-11-19 04:50:43,167 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 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 04:50:43,168 INFO L276 IsEmpty]: Start isEmpty. Operand 1007 states and 1096 transitions. [2023-11-19 04:50:43,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2023-11-19 04:50:43,168 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:50:43,169 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 04:50:43,175 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9a57712-5c05-4b13-9706-e4bf2ebadec7/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 04:50:43,375 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9a57712-5c05-4b13-9706-e4bf2ebadec7/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 04:50:43,375 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr527ASSERT_VIOLATIONMEMORY_LEAK === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 526 more)] === [2023-11-19 04:50:43,376 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:50:43,376 INFO L85 PathProgramCache]: Analyzing trace with hash -1735131161, now seen corresponding path program 1 times [2023-11-19 04:50:43,376 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-19 04:50:43,376 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1786611257] [2023-11-19 04:50:43,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:50:43,377 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 04:50:43,377 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9a57712-5c05-4b13-9706-e4bf2ebadec7/bin/utaipan-verify-t7M7D8N6sZ/mathsat [2023-11-19 04:50:43,379 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9a57712-5c05-4b13-9706-e4bf2ebadec7/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 04:50:43,425 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9a57712-5c05-4b13-9706-e4bf2ebadec7/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 04:50:43,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:50:43,609 INFO L262 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-19 04:50:43,612 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 04:50:43,622 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-19 04:50:43,623 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-19 04:50:43,624 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-19 04:50:43,635 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 39 [2023-11-19 04:50:43,709 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-19 04:50:43,710 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 70 treesize of output 26 [2023-11-19 04:50:43,732 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 04:50:43,732 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 04:50:43,733 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-19 04:50:43,733 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1786611257] [2023-11-19 04:50:43,733 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1786611257] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 04:50:43,733 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 04:50:43,733 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 04:50:43,734 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [437272224] [2023-11-19 04:50:43,734 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 04:50:43,734 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 04:50:43,734 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-19 04:50:43,736 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 04:50:43,736 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-19 04:50:43,736 INFO L87 Difference]: Start difference. First operand 1007 states and 1096 transitions. Second operand has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 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 04:50:45,553 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 04:50:45,553 INFO L93 Difference]: Finished difference Result 1346 states and 1462 transitions. [2023-11-19 04:50:45,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 04:50:45,554 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 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 12 [2023-11-19 04:50:45,554 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 04:50:45,561 INFO L225 Difference]: With dead ends: 1346 [2023-11-19 04:50:45,562 INFO L226 Difference]: Without dead ends: 1346 [2023-11-19 04:50:45,562 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-19 04:50:45,563 INFO L413 NwaCegarLoop]: 974 mSDtfsCounter, 357 mSDsluCounter, 1839 mSDsCounter, 0 mSdLazyCounter, 251 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 357 SdHoareTripleChecker+Valid, 2813 SdHoareTripleChecker+Invalid, 252 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 251 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2023-11-19 04:50:45,563 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [357 Valid, 2813 Invalid, 252 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 251 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2023-11-19 04:50:45,567 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1346 states. [2023-11-19 04:50:45,585 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1346 to 1009. [2023-11-19 04:50:45,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1009 states, 561 states have (on average 1.9429590017825311) internal successors, (1090), 1003 states have internal predecessors, (1090), 5 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-19 04:50:45,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1009 states to 1009 states and 1098 transitions. [2023-11-19 04:50:45,592 INFO L78 Accepts]: Start accepts. Automaton has 1009 states and 1098 transitions. Word has length 12 [2023-11-19 04:50:45,592 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 04:50:45,593 INFO L495 AbstractCegarLoop]: Abstraction has 1009 states and 1098 transitions. [2023-11-19 04:50:45,593 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 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 04:50:45,593 INFO L276 IsEmpty]: Start isEmpty. Operand 1009 states and 1098 transitions. [2023-11-19 04:50:45,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2023-11-19 04:50:45,594 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:50:45,594 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 04:50:45,603 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9a57712-5c05-4b13-9706-e4bf2ebadec7/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 04:50:45,798 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9a57712-5c05-4b13-9706-e4bf2ebadec7/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 04:50:45,799 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr15REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 526 more)] === [2023-11-19 04:50:45,799 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:50:45,799 INFO L85 PathProgramCache]: Analyzing trace with hash -168464001, now seen corresponding path program 1 times [2023-11-19 04:50:45,800 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-19 04:50:45,800 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [65503529] [2023-11-19 04:50:45,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:50:45,801 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 04:50:45,801 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9a57712-5c05-4b13-9706-e4bf2ebadec7/bin/utaipan-verify-t7M7D8N6sZ/mathsat [2023-11-19 04:50:45,802 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9a57712-5c05-4b13-9706-e4bf2ebadec7/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 04:50:45,806 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9a57712-5c05-4b13-9706-e4bf2ebadec7/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 04:50:46,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:50:46,029 INFO L262 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-19 04:50:46,031 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 04:50:46,049 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 04:50:46,050 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 04:50:46,050 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-19 04:50:46,050 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [65503529] [2023-11-19 04:50:46,051 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [65503529] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 04:50:46,051 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 04:50:46,051 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 04:50:46,051 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1687497391] [2023-11-19 04:50:46,051 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 04:50:46,052 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 04:50:46,052 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-19 04:50:46,053 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 04:50:46,053 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 04:50:46,053 INFO L87 Difference]: Start difference. First operand 1009 states and 1098 transitions. Second operand has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 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 04:50:46,099 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 04:50:46,100 INFO L93 Difference]: Finished difference Result 967 states and 1055 transitions. [2023-11-19 04:50:46,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 04:50:46,101 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 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 18 [2023-11-19 04:50:46,101 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 04:50:46,107 INFO L225 Difference]: With dead ends: 967 [2023-11-19 04:50:46,107 INFO L226 Difference]: Without dead ends: 967 [2023-11-19 04:50:46,108 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 16 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 04:50:46,109 INFO L413 NwaCegarLoop]: 967 mSDtfsCounter, 81 mSDsluCounter, 895 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 81 SdHoareTripleChecker+Valid, 1862 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 04:50:46,109 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [81 Valid, 1862 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 04:50:46,113 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 967 states. [2023-11-19 04:50:46,130 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 967 to 967. [2023-11-19 04:50:46,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 967 states, 543 states have (on average 1.9281767955801106) internal successors, (1047), 961 states have internal predecessors, (1047), 5 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-19 04:50:46,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 967 states to 967 states and 1055 transitions. [2023-11-19 04:50:46,137 INFO L78 Accepts]: Start accepts. Automaton has 967 states and 1055 transitions. Word has length 18 [2023-11-19 04:50:46,138 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 04:50:46,138 INFO L495 AbstractCegarLoop]: Abstraction has 967 states and 1055 transitions. [2023-11-19 04:50:46,138 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 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 04:50:46,139 INFO L276 IsEmpty]: Start isEmpty. Operand 967 states and 1055 transitions. [2023-11-19 04:50:46,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2023-11-19 04:50:46,139 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:50:46,140 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] [2023-11-19 04:50:46,150 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9a57712-5c05-4b13-9706-e4bf2ebadec7/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 04:50:46,344 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9a57712-5c05-4b13-9706-e4bf2ebadec7/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 04:50:46,345 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr38REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 526 more)] === [2023-11-19 04:50:46,345 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:50:46,345 INFO L85 PathProgramCache]: Analyzing trace with hash 1314847992, now seen corresponding path program 1 times [2023-11-19 04:50:46,354 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-19 04:50:46,355 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [50915293] [2023-11-19 04:50:46,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:50:46,355 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 04:50:46,355 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9a57712-5c05-4b13-9706-e4bf2ebadec7/bin/utaipan-verify-t7M7D8N6sZ/mathsat [2023-11-19 04:50:46,357 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9a57712-5c05-4b13-9706-e4bf2ebadec7/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 04:50:46,358 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9a57712-5c05-4b13-9706-e4bf2ebadec7/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 04:50:46,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:50:46,575 INFO L262 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-19 04:50:46,577 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 04:50:46,612 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 04:50:46,612 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 04:50:46,613 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-19 04:50:46,613 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [50915293] [2023-11-19 04:50:46,613 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [50915293] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 04:50:46,613 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 04:50:46,613 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 04:50:46,614 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [545413659] [2023-11-19 04:50:46,614 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 04:50:46,614 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 04:50:46,614 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-19 04:50:46,615 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 04:50:46,615 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-19 04:50:46,615 INFO L87 Difference]: Start difference. First operand 967 states and 1055 transitions. Second operand has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 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 04:50:46,723 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 04:50:46,723 INFO L93 Difference]: Finished difference Result 946 states and 1027 transitions. [2023-11-19 04:50:46,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 04:50:46,728 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 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 20 [2023-11-19 04:50:46,728 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 04:50:46,733 INFO L225 Difference]: With dead ends: 946 [2023-11-19 04:50:46,733 INFO L226 Difference]: Without dead ends: 946 [2023-11-19 04:50:46,734 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 17 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 04:50:46,735 INFO L413 NwaCegarLoop]: 922 mSDtfsCounter, 62 mSDsluCounter, 1810 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 2732 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 04:50:46,735 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [62 Valid, 2732 Invalid, 57 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 04:50:46,739 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 946 states. [2023-11-19 04:50:46,754 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 946 to 945. [2023-11-19 04:50:46,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 945 states, 535 states have (on average 1.902803738317757) internal successors, (1018), 939 states have internal predecessors, (1018), 5 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-19 04:50:46,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 945 states to 945 states and 1026 transitions. [2023-11-19 04:50:46,761 INFO L78 Accepts]: Start accepts. Automaton has 945 states and 1026 transitions. Word has length 20 [2023-11-19 04:50:46,761 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 04:50:46,761 INFO L495 AbstractCegarLoop]: Abstraction has 945 states and 1026 transitions. [2023-11-19 04:50:46,762 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 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 04:50:46,762 INFO L276 IsEmpty]: Start isEmpty. Operand 945 states and 1026 transitions. [2023-11-19 04:50:46,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2023-11-19 04:50:46,763 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:50:46,763 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] [2023-11-19 04:50:46,768 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9a57712-5c05-4b13-9706-e4bf2ebadec7/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)] Ended with exit code 0 [2023-11-19 04:50:46,967 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9a57712-5c05-4b13-9706-e4bf2ebadec7/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 04:50:46,967 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr52REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 526 more)] === [2023-11-19 04:50:46,968 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:50:46,968 INFO L85 PathProgramCache]: Analyzing trace with hash 1346685766, now seen corresponding path program 1 times [2023-11-19 04:50:46,968 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-19 04:50:46,968 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [506997406] [2023-11-19 04:50:46,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:50:46,969 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 04:50:46,969 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9a57712-5c05-4b13-9706-e4bf2ebadec7/bin/utaipan-verify-t7M7D8N6sZ/mathsat [2023-11-19 04:50:46,970 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9a57712-5c05-4b13-9706-e4bf2ebadec7/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 04:50:46,971 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9a57712-5c05-4b13-9706-e4bf2ebadec7/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 04:50:47,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:50:47,183 INFO L262 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-19 04:50:47,186 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 04:50:47,195 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 04:50:47,342 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 04:50:47,342 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 04:50:47,343 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-19 04:50:47,343 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [506997406] [2023-11-19 04:50:47,343 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [506997406] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 04:50:47,343 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 04:50:47,343 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 04:50:47,344 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2024693786] [2023-11-19 04:50:47,344 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 04:50:47,345 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 04:50:47,345 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-19 04:50:47,346 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 04:50:47,346 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-19 04:50:47,347 INFO L87 Difference]: Start difference. First operand 945 states and 1026 transitions. Second operand has 4 states, 3 states have (on average 11.333333333333334) internal successors, (34), 4 states have internal predecessors, (34), 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 04:50:50,870 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 04:50:50,871 INFO L93 Difference]: Finished difference Result 1321 states and 1432 transitions. [2023-11-19 04:50:50,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 04:50:50,873 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 11.333333333333334) internal successors, (34), 4 states have internal predecessors, (34), 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 34 [2023-11-19 04:50:50,873 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 04:50:50,881 INFO L225 Difference]: With dead ends: 1321 [2023-11-19 04:50:50,881 INFO L226 Difference]: Without dead ends: 1321 [2023-11-19 04:50:50,882 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 31 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 04:50:50,883 INFO L413 NwaCegarLoop]: 496 mSDtfsCounter, 904 mSDsluCounter, 685 mSDsCounter, 0 mSdLazyCounter, 1132 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 907 SdHoareTripleChecker+Valid, 1181 SdHoareTripleChecker+Invalid, 1140 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 1132 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2023-11-19 04:50:50,883 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [907 Valid, 1181 Invalid, 1140 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 1132 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time] [2023-11-19 04:50:50,887 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1321 states. [2023-11-19 04:50:50,906 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1321 to 941. [2023-11-19 04:50:50,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 941 states, 535 states have (on average 1.8953271028037384) internal successors, (1014), 935 states have internal predecessors, (1014), 5 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-19 04:50:50,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 941 states to 941 states and 1022 transitions. [2023-11-19 04:50:50,913 INFO L78 Accepts]: Start accepts. Automaton has 941 states and 1022 transitions. Word has length 34 [2023-11-19 04:50:50,913 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 04:50:50,913 INFO L495 AbstractCegarLoop]: Abstraction has 941 states and 1022 transitions. [2023-11-19 04:50:50,914 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 11.333333333333334) internal successors, (34), 4 states have internal predecessors, (34), 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 04:50:50,914 INFO L276 IsEmpty]: Start isEmpty. Operand 941 states and 1022 transitions. [2023-11-19 04:50:50,915 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2023-11-19 04:50:50,915 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:50:50,916 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] [2023-11-19 04:50:50,921 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9a57712-5c05-4b13-9706-e4bf2ebadec7/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)] Ended with exit code 0 [2023-11-19 04:50:51,120 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9a57712-5c05-4b13-9706-e4bf2ebadec7/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 04:50:51,120 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr53REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 526 more)] === [2023-11-19 04:50:51,120 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:50:51,121 INFO L85 PathProgramCache]: Analyzing trace with hash 1346685767, now seen corresponding path program 1 times [2023-11-19 04:50:51,121 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-19 04:50:51,121 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1947853190] [2023-11-19 04:50:51,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:50:51,122 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 04:50:51,122 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9a57712-5c05-4b13-9706-e4bf2ebadec7/bin/utaipan-verify-t7M7D8N6sZ/mathsat [2023-11-19 04:50:51,129 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9a57712-5c05-4b13-9706-e4bf2ebadec7/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 04:50:51,175 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9a57712-5c05-4b13-9706-e4bf2ebadec7/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 04:50:51,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:50:51,406 INFO L262 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-19 04:50:51,409 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 04:50:51,419 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 04:50:51,729 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 04:50:51,729 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 04:50:51,729 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-19 04:50:51,729 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1947853190] [2023-11-19 04:50:51,729 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1947853190] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 04:50:51,729 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 04:50:51,730 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 04:50:51,730 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1987112627] [2023-11-19 04:50:51,730 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 04:50:51,730 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 04:50:51,730 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-19 04:50:51,731 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 04:50:51,731 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-19 04:50:51,731 INFO L87 Difference]: Start difference. First operand 941 states and 1022 transitions. Second operand has 4 states, 3 states have (on average 11.333333333333334) internal successors, (34), 4 states have internal predecessors, (34), 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)