./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test9-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 8393723b 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_1ab82c9c-05d7-48a6-a268-fdd51a390406/bin/utaipan-I9t0OCRTmS/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ab82c9c-05d7-48a6-a268-fdd51a390406/bin/utaipan-I9t0OCRTmS/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ab82c9c-05d7-48a6-a268-fdd51a390406/bin/utaipan-I9t0OCRTmS/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ab82c9c-05d7-48a6-a268-fdd51a390406/bin/utaipan-I9t0OCRTmS/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test9-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ab82c9c-05d7-48a6-a268-fdd51a390406/bin/utaipan-I9t0OCRTmS/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ab82c9c-05d7-48a6-a268-fdd51a390406/bin/utaipan-I9t0OCRTmS --witnessprinter.witness.filename witness.graphml --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 9c302c0a70f15041d912ede4a343504399632b0722d257e8570893a260b2b8dc --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-8393723 [2022-11-19 06:59:37,614 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-19 06:59:37,617 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-19 06:59:37,657 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-19 06:59:37,659 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-19 06:59:37,665 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-19 06:59:37,667 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-19 06:59:37,671 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-19 06:59:37,678 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-19 06:59:37,680 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-19 06:59:37,682 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-19 06:59:37,684 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-19 06:59:37,687 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-19 06:59:37,691 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-19 06:59:37,693 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-19 06:59:37,696 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-19 06:59:37,699 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-19 06:59:37,708 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-19 06:59:37,710 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-19 06:59:37,712 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-19 06:59:37,714 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-19 06:59:37,719 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-19 06:59:37,721 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-19 06:59:37,723 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-19 06:59:37,728 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-19 06:59:37,732 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-19 06:59:37,735 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-19 06:59:37,736 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-19 06:59:37,738 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-19 06:59:37,740 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-19 06:59:37,741 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-19 06:59:37,742 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-19 06:59:37,743 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-19 06:59:37,759 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-19 06:59:37,760 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-19 06:59:37,761 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-19 06:59:37,762 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-19 06:59:37,762 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-19 06:59:37,762 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-19 06:59:37,763 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-19 06:59:37,764 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-19 06:59:37,766 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ab82c9c-05d7-48a6-a268-fdd51a390406/bin/utaipan-I9t0OCRTmS/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2022-11-19 06:59:37,803 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-19 06:59:37,803 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-19 06:59:37,804 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-19 06:59:37,804 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-19 06:59:37,805 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-19 06:59:37,805 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-19 06:59:37,806 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-19 06:59:37,806 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-19 06:59:37,806 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-19 06:59:37,807 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-19 06:59:37,807 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-19 06:59:37,807 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-19 06:59:37,807 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-19 06:59:37,808 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-19 06:59:37,808 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-19 06:59:37,808 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-19 06:59:37,808 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-19 06:59:37,809 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-19 06:59:37,810 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-19 06:59:37,810 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-19 06:59:37,810 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-19 06:59:37,811 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-19 06:59:37,811 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-19 06:59:37,811 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-19 06:59:37,811 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-19 06:59:37,812 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-19 06:59:37,812 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-11-19 06:59:37,812 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-11-19 06:59:37,813 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-11-19 06:59:37,813 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-19 06:59:37,813 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-19 06:59:37,813 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-19 06:59:37,814 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-19 06:59:37,814 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-19 06:59:37,814 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-19 06:59:37,815 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-19 06:59:37,815 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-19 06:59:37,816 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-19 06:59:37,816 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-19 06:59:37,816 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-19 06:59:37,816 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-19 06:59:37,817 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-19 06:59:37,817 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ab82c9c-05d7-48a6-a268-fdd51a390406/bin/utaipan-I9t0OCRTmS/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ab82c9c-05d7-48a6-a268-fdd51a390406/bin/utaipan-I9t0OCRTmS Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9c302c0a70f15041d912ede4a343504399632b0722d257e8570893a260b2b8dc [2022-11-19 06:59:38,166 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-19 06:59:38,212 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-19 06:59:38,215 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-19 06:59:38,217 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-19 06:59:38,218 INFO L275 PluginConnector]: CDTParser initialized [2022-11-19 06:59:38,219 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ab82c9c-05d7-48a6-a268-fdd51a390406/bin/utaipan-I9t0OCRTmS/../../sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test9-2.i [2022-11-19 06:59:38,299 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ab82c9c-05d7-48a6-a268-fdd51a390406/bin/utaipan-I9t0OCRTmS/data/711f73acc/1fe6cfb9baf9486a9c64f783c945c6b0/FLAG50af2a081 [2022-11-19 06:59:39,123 INFO L306 CDTParser]: Found 1 translation units. [2022-11-19 06:59:39,129 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ab82c9c-05d7-48a6-a268-fdd51a390406/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test9-2.i [2022-11-19 06:59:39,166 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ab82c9c-05d7-48a6-a268-fdd51a390406/bin/utaipan-I9t0OCRTmS/data/711f73acc/1fe6cfb9baf9486a9c64f783c945c6b0/FLAG50af2a081 [2022-11-19 06:59:39,216 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ab82c9c-05d7-48a6-a268-fdd51a390406/bin/utaipan-I9t0OCRTmS/data/711f73acc/1fe6cfb9baf9486a9c64f783c945c6b0 [2022-11-19 06:59:39,221 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-19 06:59:39,224 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-19 06:59:39,225 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-19 06:59:39,226 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-19 06:59:39,231 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-19 06:59:39,233 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 06:59:39" (1/1) ... [2022-11-19 06:59:39,235 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@53802502 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:59:39, skipping insertion in model container [2022-11-19 06:59:39,235 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 06:59:39" (1/1) ... [2022-11-19 06:59:39,247 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-19 06:59:39,336 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-19 06:59:39,957 WARN L234 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ab82c9c-05d7-48a6-a268-fdd51a390406/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test9-2.i[33021,33034] [2022-11-19 06:59:40,337 WARN L234 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ab82c9c-05d7-48a6-a268-fdd51a390406/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test9-2.i[84583,84596] [2022-11-19 06:59:40,362 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 06:59:40,380 ERROR L326 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) [2022-11-19 06:59:40,381 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@54c09dc2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:59:40, skipping insertion in model container [2022-11-19 06:59:40,381 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-19 06:59:40,382 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2022-11-19 06:59:40,385 INFO L158 Benchmark]: Toolchain (without parser) took 1159.20ms. Allocated memory is still 96.5MB. Free memory was 67.9MB in the beginning and 49.6MB in the end (delta: 18.3MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2022-11-19 06:59:40,387 INFO L158 Benchmark]: CDTParser took 0.36ms. Allocated memory is still 96.5MB. Free memory is still 65.8MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-19 06:59:40,389 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1156.35ms. Allocated memory is still 96.5MB. Free memory was 67.9MB in the beginning and 49.6MB in the end (delta: 18.3MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2022-11-19 06:59:40,391 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.36ms. Allocated memory is still 96.5MB. Free memory is still 65.8MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1156.35ms. Allocated memory is still 96.5MB. Free memory was 67.9MB in the beginning and 49.6MB in the end (delta: 18.3MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 2221]: 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_1ab82c9c-05d7-48a6-a268-fdd51a390406/bin/utaipan-I9t0OCRTmS/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ab82c9c-05d7-48a6-a268-fdd51a390406/bin/utaipan-I9t0OCRTmS/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ab82c9c-05d7-48a6-a268-fdd51a390406/bin/utaipan-I9t0OCRTmS/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ab82c9c-05d7-48a6-a268-fdd51a390406/bin/utaipan-I9t0OCRTmS/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test9-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ab82c9c-05d7-48a6-a268-fdd51a390406/bin/utaipan-I9t0OCRTmS/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ab82c9c-05d7-48a6-a268-fdd51a390406/bin/utaipan-I9t0OCRTmS --witnessprinter.witness.filename witness.graphml --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 9c302c0a70f15041d912ede4a343504399632b0722d257e8570893a260b2b8dc --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-8393723 [2022-11-19 06:59:42,956 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-19 06:59:42,960 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-19 06:59:43,008 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-19 06:59:43,009 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-19 06:59:43,014 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-19 06:59:43,017 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-19 06:59:43,023 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-19 06:59:43,026 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-19 06:59:43,035 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-19 06:59:43,037 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-19 06:59:43,039 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-19 06:59:43,040 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-19 06:59:43,043 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-19 06:59:43,044 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-19 06:59:43,047 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-19 06:59:43,049 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-19 06:59:43,051 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-19 06:59:43,058 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-19 06:59:43,062 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-19 06:59:43,068 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-19 06:59:43,071 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-19 06:59:43,072 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-19 06:59:43,074 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-19 06:59:43,080 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-19 06:59:43,085 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-19 06:59:43,086 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-19 06:59:43,087 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-19 06:59:43,089 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-19 06:59:43,091 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-19 06:59:43,091 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-19 06:59:43,092 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-19 06:59:43,095 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-19 06:59:43,096 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-19 06:59:43,097 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-19 06:59:43,097 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-19 06:59:43,099 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-19 06:59:43,099 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-19 06:59:43,100 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-19 06:59:43,102 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-19 06:59:43,103 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-19 06:59:43,110 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ab82c9c-05d7-48a6-a268-fdd51a390406/bin/utaipan-I9t0OCRTmS/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf [2022-11-19 06:59:43,167 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-19 06:59:43,167 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-19 06:59:43,168 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-19 06:59:43,169 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-19 06:59:43,170 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-19 06:59:43,170 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-19 06:59:43,170 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-19 06:59:43,171 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-19 06:59:43,171 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-19 06:59:43,171 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-19 06:59:43,173 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-19 06:59:43,173 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-19 06:59:43,175 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-19 06:59:43,175 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-19 06:59:43,176 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-19 06:59:43,176 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-19 06:59:43,176 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-19 06:59:43,176 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-19 06:59:43,177 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-19 06:59:43,177 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-19 06:59:43,177 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-11-19 06:59:43,177 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-11-19 06:59:43,178 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-11-19 06:59:43,178 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-19 06:59:43,178 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-19 06:59:43,178 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-11-19 06:59:43,179 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-11-19 06:59:43,179 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-19 06:59:43,179 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-19 06:59:43,180 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-19 06:59:43,180 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-19 06:59:43,181 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-19 06:59:43,181 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-19 06:59:43,181 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-19 06:59:43,182 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-19 06:59:43,182 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2022-11-19 06:59:43,182 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-11-19 06:59:43,183 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-19 06:59:43,183 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-19 06:59:43,183 INFO L138 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_1ab82c9c-05d7-48a6-a268-fdd51a390406/bin/utaipan-I9t0OCRTmS/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ab82c9c-05d7-48a6-a268-fdd51a390406/bin/utaipan-I9t0OCRTmS Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9c302c0a70f15041d912ede4a343504399632b0722d257e8570893a260b2b8dc [2022-11-19 06:59:43,671 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-19 06:59:43,700 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-19 06:59:43,705 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-19 06:59:43,707 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-19 06:59:43,708 INFO L275 PluginConnector]: CDTParser initialized [2022-11-19 06:59:43,710 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ab82c9c-05d7-48a6-a268-fdd51a390406/bin/utaipan-I9t0OCRTmS/../../sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test9-2.i [2022-11-19 06:59:43,805 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ab82c9c-05d7-48a6-a268-fdd51a390406/bin/utaipan-I9t0OCRTmS/data/02f8ad131/7386f5f7fcc745328a52bc2ebc09f058/FLAG75901280e [2022-11-19 06:59:44,668 INFO L306 CDTParser]: Found 1 translation units. [2022-11-19 06:59:44,669 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ab82c9c-05d7-48a6-a268-fdd51a390406/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test9-2.i [2022-11-19 06:59:44,697 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ab82c9c-05d7-48a6-a268-fdd51a390406/bin/utaipan-I9t0OCRTmS/data/02f8ad131/7386f5f7fcc745328a52bc2ebc09f058/FLAG75901280e [2022-11-19 06:59:44,814 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ab82c9c-05d7-48a6-a268-fdd51a390406/bin/utaipan-I9t0OCRTmS/data/02f8ad131/7386f5f7fcc745328a52bc2ebc09f058 [2022-11-19 06:59:44,817 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-19 06:59:44,820 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-19 06:59:44,823 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-19 06:59:44,823 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-19 06:59:44,829 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-19 06:59:44,830 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 06:59:44" (1/1) ... [2022-11-19 06:59:44,831 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@426f374a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:59:44, skipping insertion in model container [2022-11-19 06:59:44,831 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 06:59:44" (1/1) ... [2022-11-19 06:59:44,840 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-19 06:59:44,939 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-19 06:59:45,697 WARN L234 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ab82c9c-05d7-48a6-a268-fdd51a390406/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test9-2.i[33021,33034] [2022-11-19 06:59:46,101 WARN L234 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ab82c9c-05d7-48a6-a268-fdd51a390406/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test9-2.i[84583,84596] [2022-11-19 06:59:46,125 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 06:59:46,143 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2022-11-19 06:59:46,174 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-19 06:59:46,208 WARN L234 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ab82c9c-05d7-48a6-a268-fdd51a390406/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test9-2.i[33021,33034] [2022-11-19 06:59:46,395 WARN L234 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ab82c9c-05d7-48a6-a268-fdd51a390406/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test9-2.i[84583,84596] [2022-11-19 06:59:46,405 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 06:59:46,422 INFO L203 MainTranslator]: Completed pre-run [2022-11-19 06:59:46,470 WARN L234 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ab82c9c-05d7-48a6-a268-fdd51a390406/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test9-2.i[33021,33034] [2022-11-19 06:59:46,604 WARN L234 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ab82c9c-05d7-48a6-a268-fdd51a390406/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test9-2.i[84583,84596] [2022-11-19 06:59:46,612 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 06:59:46,660 INFO L208 MainTranslator]: Completed translation [2022-11-19 06:59:46,661 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:59:46 WrapperNode [2022-11-19 06:59:46,662 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-19 06:59:46,664 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-19 06:59:46,665 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-19 06:59:46,665 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-19 06:59:46,674 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:59:46" (1/1) ... [2022-11-19 06:59:46,762 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:59:46" (1/1) ... [2022-11-19 06:59:46,924 INFO L138 Inliner]: procedures = 180, calls = 781, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 3030 [2022-11-19 06:59:46,925 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-19 06:59:46,926 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-19 06:59:46,926 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-19 06:59:46,927 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-19 06:59:46,940 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:59:46" (1/1) ... [2022-11-19 06:59:46,942 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:59:46" (1/1) ... [2022-11-19 06:59:46,972 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:59:46" (1/1) ... [2022-11-19 06:59:46,973 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:59:46" (1/1) ... [2022-11-19 06:59:47,104 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:59:46" (1/1) ... [2022-11-19 06:59:47,132 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:59:46" (1/1) ... [2022-11-19 06:59:47,144 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:59:46" (1/1) ... [2022-11-19 06:59:47,155 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:59:46" (1/1) ... [2022-11-19 06:59:47,177 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-19 06:59:47,178 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-19 06:59:47,178 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-19 06:59:47,178 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-19 06:59:47,179 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:59:46" (1/1) ... [2022-11-19 06:59:47,187 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-19 06:59:47,201 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ab82c9c-05d7-48a6-a268-fdd51a390406/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 06:59:47,225 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ab82c9c-05d7-48a6-a268-fdd51a390406/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-19 06:59:47,255 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ab82c9c-05d7-48a6-a268-fdd51a390406/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-19 06:59:47,283 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2022-11-19 06:59:47,283 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2022-11-19 06:59:47,283 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-11-19 06:59:47,284 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-11-19 06:59:47,284 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2022-11-19 06:59:47,284 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2022-11-19 06:59:47,284 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-19 06:59:47,284 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-19 06:59:47,285 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-19 06:59:47,285 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-19 06:59:47,285 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2022-11-19 06:59:47,285 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-19 06:59:47,286 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-19 06:59:47,286 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2022-11-19 06:59:47,286 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-11-19 06:59:47,286 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-19 06:59:47,287 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-19 06:59:47,623 INFO L235 CfgBuilder]: Building ICFG [2022-11-19 06:59:47,626 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-19 06:59:47,632 WARN L816 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-11-19 06:59:56,359 INFO L276 CfgBuilder]: Performing block encoding [2022-11-19 06:59:56,392 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-19 06:59:56,396 INFO L300 CfgBuilder]: Removed 63 assume(true) statements. [2022-11-19 06:59:56,402 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 06:59:56 BoogieIcfgContainer [2022-11-19 06:59:56,403 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-19 06:59:56,406 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-19 06:59:56,406 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-19 06:59:56,410 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-19 06:59:56,410 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 06:59:44" (1/3) ... [2022-11-19 06:59:56,411 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@666c5e05 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 06:59:56, skipping insertion in model container [2022-11-19 06:59:56,412 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:59:46" (2/3) ... [2022-11-19 06:59:56,412 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@666c5e05 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 06:59:56, skipping insertion in model container [2022-11-19 06:59:56,413 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 06:59:56" (3/3) ... [2022-11-19 06:59:56,414 INFO L112 eAbstractionObserver]: Analyzing ICFG uthash_FNV_test9-2.i [2022-11-19 06:59:56,437 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-19 06:59:56,438 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 536 error locations. [2022-11-19 06:59:56,565 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-19 06:59:56,576 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;@24e3f220, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-19 06:59:56,576 INFO L358 AbstractCegarLoop]: Starting to check reachability of 536 error locations. [2022-11-19 06:59:56,591 INFO L276 IsEmpty]: Start isEmpty. Operand has 2070 states, 1031 states have (on average 2.1231813773035886) internal successors, (2189), 2064 states have internal predecessors, (2189), 503 states have call successors, (503), 2 states have call predecessors, (503), 2 states have return successors, (503), 4 states have call predecessors, (503), 503 states have call successors, (503) [2022-11-19 06:59:56,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2022-11-19 06:59:56,599 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:59:56,600 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2022-11-19 06:59:56,600 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 533 more)] === [2022-11-19 06:59:56,608 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:59:56,609 INFO L85 PathProgramCache]: Analyzing trace with hash 38794, now seen corresponding path program 1 times [2022-11-19 06:59:56,627 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-19 06:59:56,628 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1616361757] [2022-11-19 06:59:56,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:59:56,630 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 [2022-11-19 06:59:56,630 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ab82c9c-05d7-48a6-a268-fdd51a390406/bin/utaipan-I9t0OCRTmS/mathsat [2022-11-19 06:59:56,643 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ab82c9c-05d7-48a6-a268-fdd51a390406/bin/utaipan-I9t0OCRTmS/mathsat -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) [2022-11-19 06:59:56,653 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ab82c9c-05d7-48a6-a268-fdd51a390406/bin/utaipan-I9t0OCRTmS/mathsat -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 [2022-11-19 06:59:56,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:59:56,859 INFO L263 TraceCheckSpWp]: Trace formula consists of 26 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-19 06:59:56,865 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 06:59:56,995 INFO L350 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 [2022-11-19 06:59:57,033 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 06:59:57,033 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 06:59:57,034 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-19 06:59:57,034 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1616361757] [2022-11-19 06:59:57,035 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1616361757] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 06:59:57,035 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 06:59:57,035 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-19 06:59:57,037 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [738514564] [2022-11-19 06:59:57,038 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 06:59:57,043 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 06:59:57,043 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-19 06:59:57,074 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 06:59:57,075 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 06:59:57,082 INFO L87 Difference]: Start difference. First operand has 2070 states, 1031 states have (on average 2.1231813773035886) internal successors, (2189), 2064 states have internal predecessors, (2189), 503 states have call successors, (503), 2 states have call predecessors, (503), 2 states have return successors, (503), 4 states have call predecessors, (503), 503 states have call successors, (503) 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) [2022-11-19 07:00:01,639 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:00:01,640 INFO L93 Difference]: Finished difference Result 2234 states and 3299 transitions. [2022-11-19 07:00:01,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 07:00:01,643 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 [2022-11-19 07:00:01,644 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:00:01,689 INFO L225 Difference]: With dead ends: 2234 [2022-11-19 07:00:01,689 INFO L226 Difference]: Without dead ends: 2232 [2022-11-19 07:00:01,692 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 [2022-11-19 07:00:01,696 INFO L413 NwaCegarLoop]: 2634 mSDtfsCounter, 1983 mSDsluCounter, 149 mSDsCounter, 0 mSdLazyCounter, 1135 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2486 SdHoareTripleChecker+Valid, 2783 SdHoareTripleChecker+Invalid, 1151 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 1135 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.3s IncrementalHoareTripleChecker+Time [2022-11-19 07:00:01,697 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2486 Valid, 2783 Invalid, 1151 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [16 Valid, 1135 Invalid, 0 Unknown, 0 Unchecked, 4.3s Time] [2022-11-19 07:00:01,725 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2232 states. [2022-11-19 07:00:02,247 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2232 to 2054. [2022-11-19 07:00:02,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2054 states, 1031 states have (on average 2.0417070805043647) internal successors, (2105), 2048 states have internal predecessors, (2105), 503 states have call successors, (503), 2 states have call predecessors, (503), 2 states have return successors, (503), 4 states have call predecessors, (503), 503 states have call successors, (503) [2022-11-19 07:00:02,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2054 states to 2054 states and 3111 transitions. [2022-11-19 07:00:02,272 INFO L78 Accepts]: Start accepts. Automaton has 2054 states and 3111 transitions. Word has length 3 [2022-11-19 07:00:02,272 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:00:02,272 INFO L495 AbstractCegarLoop]: Abstraction has 2054 states and 3111 transitions. [2022-11-19 07:00:02,273 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) [2022-11-19 07:00:02,273 INFO L276 IsEmpty]: Start isEmpty. Operand 2054 states and 3111 transitions. [2022-11-19 07:00:02,273 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2022-11-19 07:00:02,274 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:00:02,274 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2022-11-19 07:00:02,293 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ab82c9c-05d7-48a6-a268-fdd51a390406/bin/utaipan-I9t0OCRTmS/mathsat -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 [2022-11-19 07:00:02,492 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ab82c9c-05d7-48a6-a268-fdd51a390406/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-19 07:00:02,492 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 533 more)] === [2022-11-19 07:00:02,493 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:00:02,493 INFO L85 PathProgramCache]: Analyzing trace with hash 38795, now seen corresponding path program 1 times [2022-11-19 07:00:02,494 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-19 07:00:02,494 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1268533174] [2022-11-19 07:00:02,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:00:02,495 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 [2022-11-19 07:00:02,495 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ab82c9c-05d7-48a6-a268-fdd51a390406/bin/utaipan-I9t0OCRTmS/mathsat [2022-11-19 07:00:02,497 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ab82c9c-05d7-48a6-a268-fdd51a390406/bin/utaipan-I9t0OCRTmS/mathsat -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) [2022-11-19 07:00:02,501 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ab82c9c-05d7-48a6-a268-fdd51a390406/bin/utaipan-I9t0OCRTmS/mathsat -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 [2022-11-19 07:00:02,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:00:02,634 INFO L263 TraceCheckSpWp]: Trace formula consists of 26 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-19 07:00:02,637 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:00:02,672 INFO L350 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 [2022-11-19 07:00:02,690 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:00:02,691 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 07:00:02,692 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-19 07:00:02,697 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1268533174] [2022-11-19 07:00:02,699 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1268533174] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:00:02,699 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:00:02,699 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-19 07:00:02,700 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [571932053] [2022-11-19 07:00:02,702 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:00:02,704 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 07:00:02,704 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-19 07:00:02,705 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 07:00:02,707 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 07:00:02,707 INFO L87 Difference]: Start difference. First operand 2054 states and 3111 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) [2022-11-19 07:00:08,882 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:00:08,883 INFO L93 Difference]: Finished difference Result 3462 states and 5551 transitions. [2022-11-19 07:00:08,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 07:00:08,884 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 [2022-11-19 07:00:08,884 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:00:08,912 INFO L225 Difference]: With dead ends: 3462 [2022-11-19 07:00:08,912 INFO L226 Difference]: Without dead ends: 3462 [2022-11-19 07:00:08,913 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 [2022-11-19 07:00:08,916 INFO L413 NwaCegarLoop]: 3415 mSDtfsCounter, 1440 mSDsluCounter, 2081 mSDsCounter, 0 mSdLazyCounter, 1210 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1940 SdHoareTripleChecker+Valid, 5496 SdHoareTripleChecker+Invalid, 1215 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 1210 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.9s IncrementalHoareTripleChecker+Time [2022-11-19 07:00:08,918 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1940 Valid, 5496 Invalid, 1215 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [5 Valid, 1210 Invalid, 0 Unknown, 0 Unchecked, 5.9s Time] [2022-11-19 07:00:08,928 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3462 states. [2022-11-19 07:00:09,446 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3462 to 3176. [2022-11-19 07:00:09,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3176 states, 1654 states have (on average 2.0151148730350665) internal successors, (3333), 3170 states have internal predecessors, (3333), 1003 states have call successors, (1003), 2 states have call predecessors, (1003), 2 states have return successors, (1003), 5 states have call predecessors, (1003), 1003 states have call successors, (1003) [2022-11-19 07:00:09,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3176 states to 3176 states and 5339 transitions. [2022-11-19 07:00:09,474 INFO L78 Accepts]: Start accepts. Automaton has 3176 states and 5339 transitions. Word has length 3 [2022-11-19 07:00:09,474 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:00:09,475 INFO L495 AbstractCegarLoop]: Abstraction has 3176 states and 5339 transitions. [2022-11-19 07:00:09,476 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) [2022-11-19 07:00:09,478 INFO L276 IsEmpty]: Start isEmpty. Operand 3176 states and 5339 transitions. [2022-11-19 07:00:09,478 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-11-19 07:00:09,479 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:00:09,479 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:00:09,501 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ab82c9c-05d7-48a6-a268-fdd51a390406/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2022-11-19 07:00:09,693 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ab82c9c-05d7-48a6-a268-fdd51a390406/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-19 07:00:09,694 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 533 more)] === [2022-11-19 07:00:09,701 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:00:09,707 INFO L85 PathProgramCache]: Analyzing trace with hash 1466973012, now seen corresponding path program 1 times [2022-11-19 07:00:09,708 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-19 07:00:09,708 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2065501834] [2022-11-19 07:00:09,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:00:09,708 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 [2022-11-19 07:00:09,709 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ab82c9c-05d7-48a6-a268-fdd51a390406/bin/utaipan-I9t0OCRTmS/mathsat [2022-11-19 07:00:09,713 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ab82c9c-05d7-48a6-a268-fdd51a390406/bin/utaipan-I9t0OCRTmS/mathsat -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) [2022-11-19 07:00:09,747 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ab82c9c-05d7-48a6-a268-fdd51a390406/bin/utaipan-I9t0OCRTmS/mathsat -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 [2022-11-19 07:00:09,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:00:09,922 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-19 07:00:09,925 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:00:09,947 INFO L350 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 [2022-11-19 07:00:09,956 INFO L350 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 [2022-11-19 07:00:10,060 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:00:10,063 INFO L350 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 12 treesize of output 14 [2022-11-19 07:00:10,089 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-19 07:00:10,089 INFO L350 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 [2022-11-19 07:00:10,153 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:00:10,153 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 07:00:10,153 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-19 07:00:10,154 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2065501834] [2022-11-19 07:00:10,155 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2065501834] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:00:10,155 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:00:10,155 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 07:00:10,155 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [832318502] [2022-11-19 07:00:10,156 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:00:10,156 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-19 07:00:10,158 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-19 07:00:10,160 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-19 07:00:10,161 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-19 07:00:10,161 INFO L87 Difference]: Start difference. First operand 3176 states and 5339 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) [2022-11-19 07:00:17,264 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:00:17,264 INFO L93 Difference]: Finished difference Result 3343 states and 5514 transitions. [2022-11-19 07:00:17,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-19 07:00:17,265 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 [2022-11-19 07:00:17,265 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:00:17,291 INFO L225 Difference]: With dead ends: 3343 [2022-11-19 07:00:17,291 INFO L226 Difference]: Without dead ends: 3343 [2022-11-19 07:00:17,292 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 [2022-11-19 07:00:17,296 INFO L413 NwaCegarLoop]: 2361 mSDtfsCounter, 2257 mSDsluCounter, 90 mSDsCounter, 0 mSdLazyCounter, 1967 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2760 SdHoareTripleChecker+Valid, 2451 SdHoareTripleChecker+Invalid, 1984 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 1967 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.9s IncrementalHoareTripleChecker+Time [2022-11-19 07:00:17,306 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2760 Valid, 2451 Invalid, 1984 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 1967 Invalid, 0 Unknown, 0 Unchecked, 6.9s Time] [2022-11-19 07:00:17,313 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3343 states. [2022-11-19 07:00:17,793 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3343 to 2043. [2022-11-19 07:00:17,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2043 states, 1031 states have (on average 2.0300678952473326) internal successors, (2093), 2037 states have internal predecessors, (2093), 503 states have call successors, (503), 2 states have call predecessors, (503), 2 states have return successors, (503), 4 states have call predecessors, (503), 503 states have call successors, (503) [2022-11-19 07:00:17,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2043 states to 2043 states and 3099 transitions. [2022-11-19 07:00:17,809 INFO L78 Accepts]: Start accepts. Automaton has 2043 states and 3099 transitions. Word has length 7 [2022-11-19 07:00:17,809 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:00:17,810 INFO L495 AbstractCegarLoop]: Abstraction has 2043 states and 3099 transitions. [2022-11-19 07:00:17,810 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) [2022-11-19 07:00:17,810 INFO L276 IsEmpty]: Start isEmpty. Operand 2043 states and 3099 transitions. [2022-11-19 07:00:17,811 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-11-19 07:00:17,811 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:00:17,812 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:00:17,833 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ab82c9c-05d7-48a6-a268-fdd51a390406/bin/utaipan-I9t0OCRTmS/mathsat -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 [2022-11-19 07:00:18,032 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ab82c9c-05d7-48a6-a268-fdd51a390406/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-19 07:00:18,033 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 533 more)] === [2022-11-19 07:00:18,033 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:00:18,033 INFO L85 PathProgramCache]: Analyzing trace with hash -1768476910, now seen corresponding path program 1 times [2022-11-19 07:00:18,034 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-19 07:00:18,034 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1381302079] [2022-11-19 07:00:18,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:00:18,035 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 [2022-11-19 07:00:18,036 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ab82c9c-05d7-48a6-a268-fdd51a390406/bin/utaipan-I9t0OCRTmS/mathsat [2022-11-19 07:00:18,037 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ab82c9c-05d7-48a6-a268-fdd51a390406/bin/utaipan-I9t0OCRTmS/mathsat -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) [2022-11-19 07:00:18,046 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ab82c9c-05d7-48a6-a268-fdd51a390406/bin/utaipan-I9t0OCRTmS/mathsat -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 [2022-11-19 07:00:18,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:00:18,198 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-19 07:00:18,200 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:00:18,212 INFO L350 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 [2022-11-19 07:00:18,229 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:00:18,229 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 07:00:18,230 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-19 07:00:18,230 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1381302079] [2022-11-19 07:00:18,230 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1381302079] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:00:18,231 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:00:18,232 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-19 07:00:18,232 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1706856488] [2022-11-19 07:00:18,232 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:00:18,233 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 07:00:18,233 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-19 07:00:18,235 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 07:00:18,238 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 07:00:18,243 INFO L87 Difference]: Start difference. First operand 2043 states and 3099 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) [2022-11-19 07:00:22,142 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:00:22,142 INFO L93 Difference]: Finished difference Result 3209 states and 5286 transitions. [2022-11-19 07:00:22,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 07:00:22,145 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 [2022-11-19 07:00:22,145 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:00:22,162 INFO L225 Difference]: With dead ends: 3209 [2022-11-19 07:00:22,163 INFO L226 Difference]: Without dead ends: 3209 [2022-11-19 07:00:22,163 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 [2022-11-19 07:00:22,164 INFO L413 NwaCegarLoop]: 4864 mSDtfsCounter, 1802 mSDsluCounter, 2257 mSDsCounter, 0 mSdLazyCounter, 1129 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2305 SdHoareTripleChecker+Valid, 7121 SdHoareTripleChecker+Invalid, 1180 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 1129 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2022-11-19 07:00:22,164 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2305 Valid, 7121 Invalid, 1180 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 1129 Invalid, 0 Unknown, 0 Unchecked, 3.7s Time] [2022-11-19 07:00:22,170 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3209 states. [2022-11-19 07:00:22,555 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3209 to 1996. [2022-11-19 07:00:22,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1996 states, 1031 states have (on average 1.9844810863239573) internal successors, (2046), 1990 states have internal predecessors, (2046), 503 states have call successors, (503), 2 states have call predecessors, (503), 2 states have return successors, (503), 4 states have call predecessors, (503), 503 states have call successors, (503) [2022-11-19 07:00:22,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1996 states to 1996 states and 3052 transitions. [2022-11-19 07:00:22,568 INFO L78 Accepts]: Start accepts. Automaton has 1996 states and 3052 transitions. Word has length 8 [2022-11-19 07:00:22,569 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:00:22,569 INFO L495 AbstractCegarLoop]: Abstraction has 1996 states and 3052 transitions. [2022-11-19 07:00:22,569 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) [2022-11-19 07:00:22,569 INFO L276 IsEmpty]: Start isEmpty. Operand 1996 states and 3052 transitions. [2022-11-19 07:00:22,570 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-11-19 07:00:22,570 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:00:22,570 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:00:22,583 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ab82c9c-05d7-48a6-a268-fdd51a390406/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2022-11-19 07:00:22,782 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ab82c9c-05d7-48a6-a268-fdd51a390406/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-19 07:00:22,783 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 533 more)] === [2022-11-19 07:00:22,783 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:00:22,784 INFO L85 PathProgramCache]: Analyzing trace with hash -1768476909, now seen corresponding path program 1 times [2022-11-19 07:00:22,784 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-19 07:00:22,784 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [434247216] [2022-11-19 07:00:22,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:00:22,785 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 [2022-11-19 07:00:22,785 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ab82c9c-05d7-48a6-a268-fdd51a390406/bin/utaipan-I9t0OCRTmS/mathsat [2022-11-19 07:00:22,786 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ab82c9c-05d7-48a6-a268-fdd51a390406/bin/utaipan-I9t0OCRTmS/mathsat -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) [2022-11-19 07:00:22,798 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ab82c9c-05d7-48a6-a268-fdd51a390406/bin/utaipan-I9t0OCRTmS/mathsat -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 [2022-11-19 07:00:22,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:00:22,950 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-19 07:00:22,953 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:00:22,961 INFO L350 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 [2022-11-19 07:00:23,001 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:00:23,002 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 07:00:23,002 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-19 07:00:23,002 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [434247216] [2022-11-19 07:00:23,002 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [434247216] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:00:23,003 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:00:23,003 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-19 07:00:23,003 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [408711054] [2022-11-19 07:00:23,003 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:00:23,004 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 07:00:23,004 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-19 07:00:23,005 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 07:00:23,005 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 07:00:23,005 INFO L87 Difference]: Start difference. First operand 1996 states and 3052 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) [2022-11-19 07:00:28,131 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:00:28,132 INFO L93 Difference]: Finished difference Result 3274 states and 5354 transitions. [2022-11-19 07:00:28,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 07:00:28,133 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 [2022-11-19 07:00:28,133 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:00:28,151 INFO L225 Difference]: With dead ends: 3274 [2022-11-19 07:00:28,151 INFO L226 Difference]: Without dead ends: 3274 [2022-11-19 07:00:28,152 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 [2022-11-19 07:00:28,153 INFO L413 NwaCegarLoop]: 5056 mSDtfsCounter, 1489 mSDsluCounter, 2421 mSDsCounter, 0 mSdLazyCounter, 1146 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1989 SdHoareTripleChecker+Valid, 7477 SdHoareTripleChecker+Invalid, 1158 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 1146 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.0s IncrementalHoareTripleChecker+Time [2022-11-19 07:00:28,153 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1989 Valid, 7477 Invalid, 1158 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 1146 Invalid, 0 Unknown, 0 Unchecked, 5.0s Time] [2022-11-19 07:00:28,159 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3274 states. [2022-11-19 07:00:28,580 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3274 to 2018. [2022-11-19 07:00:28,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2018 states, 1063 states have (on average 1.9774223894637817) internal successors, (2102), 2012 states have internal predecessors, (2102), 503 states have call successors, (503), 2 states have call predecessors, (503), 2 states have return successors, (503), 4 states have call predecessors, (503), 503 states have call successors, (503) [2022-11-19 07:00:28,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2018 states to 2018 states and 3108 transitions. [2022-11-19 07:00:28,602 INFO L78 Accepts]: Start accepts. Automaton has 2018 states and 3108 transitions. Word has length 8 [2022-11-19 07:00:28,603 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:00:28,603 INFO L495 AbstractCegarLoop]: Abstraction has 2018 states and 3108 transitions. [2022-11-19 07:00:28,603 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) [2022-11-19 07:00:28,603 INFO L276 IsEmpty]: Start isEmpty. Operand 2018 states and 3108 transitions. [2022-11-19 07:00:28,604 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-19 07:00:28,606 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:00:28,606 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:00:28,624 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ab82c9c-05d7-48a6-a268-fdd51a390406/bin/utaipan-I9t0OCRTmS/mathsat -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 [2022-11-19 07:00:28,818 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ab82c9c-05d7-48a6-a268-fdd51a390406/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-19 07:00:28,819 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr430REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 533 more)] === [2022-11-19 07:00:28,820 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:00:28,820 INFO L85 PathProgramCache]: Analyzing trace with hash 696609462, now seen corresponding path program 1 times [2022-11-19 07:00:28,820 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-19 07:00:28,821 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1002671664] [2022-11-19 07:00:28,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:00:28,821 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 [2022-11-19 07:00:28,821 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ab82c9c-05d7-48a6-a268-fdd51a390406/bin/utaipan-I9t0OCRTmS/mathsat [2022-11-19 07:00:28,823 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ab82c9c-05d7-48a6-a268-fdd51a390406/bin/utaipan-I9t0OCRTmS/mathsat -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) [2022-11-19 07:00:28,872 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ab82c9c-05d7-48a6-a268-fdd51a390406/bin/utaipan-I9t0OCRTmS/mathsat -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 [2022-11-19 07:00:29,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:00:29,024 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-19 07:00:29,026 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:00:29,115 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:00:29,115 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 07:00:29,116 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-19 07:00:29,116 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1002671664] [2022-11-19 07:00:29,116 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1002671664] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:00:29,116 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:00:29,117 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 07:00:29,117 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [850451810] [2022-11-19 07:00:29,117 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:00:29,117 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 07:00:29,118 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-19 07:00:29,118 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 07:00:29,118 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 07:00:29,119 INFO L87 Difference]: Start difference. First operand 2018 states and 3108 transitions. Second operand has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 07:00:29,599 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:00:29,599 INFO L93 Difference]: Finished difference Result 3485 states and 5610 transitions. [2022-11-19 07:00:29,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 07:00:29,600 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2022-11-19 07:00:29,601 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:00:29,619 INFO L225 Difference]: With dead ends: 3485 [2022-11-19 07:00:29,620 INFO L226 Difference]: Without dead ends: 3485 [2022-11-19 07:00:29,620 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 07:00:29,623 INFO L413 NwaCegarLoop]: 3604 mSDtfsCounter, 1560 mSDsluCounter, 2885 mSDsCounter, 0 mSdLazyCounter, 112 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2062 SdHoareTripleChecker+Valid, 6489 SdHoareTripleChecker+Invalid, 119 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 112 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-19 07:00:29,624 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2062 Valid, 6489 Invalid, 119 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 112 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-19 07:00:29,630 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3485 states. [2022-11-19 07:00:30,064 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3485 to 3192. [2022-11-19 07:00:30,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3192 states, 1737 states have (on average 1.9568221070811744) internal successors, (3399), 3186 states have internal predecessors, (3399), 1003 states have call successors, (1003), 2 states have call predecessors, (1003), 2 states have return successors, (1003), 5 states have call predecessors, (1003), 1003 states have call successors, (1003) [2022-11-19 07:00:30,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3192 states to 3192 states and 5405 transitions. [2022-11-19 07:00:30,105 INFO L78 Accepts]: Start accepts. Automaton has 3192 states and 5405 transitions. Word has length 11 [2022-11-19 07:00:30,105 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:00:30,106 INFO L495 AbstractCegarLoop]: Abstraction has 3192 states and 5405 transitions. [2022-11-19 07:00:30,107 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 07:00:30,107 INFO L276 IsEmpty]: Start isEmpty. Operand 3192 states and 5405 transitions. [2022-11-19 07:00:30,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-11-19 07:00:30,108 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:00:30,108 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:00:30,129 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ab82c9c-05d7-48a6-a268-fdd51a390406/bin/utaipan-I9t0OCRTmS/mathsat -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 [2022-11-19 07:00:30,322 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ab82c9c-05d7-48a6-a268-fdd51a390406/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-19 07:00:30,323 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr340REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 533 more)] === [2022-11-19 07:00:30,323 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:00:30,323 INFO L85 PathProgramCache]: Analyzing trace with hash 518331069, now seen corresponding path program 1 times [2022-11-19 07:00:30,324 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-19 07:00:30,324 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [75681704] [2022-11-19 07:00:30,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:00:30,324 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 [2022-11-19 07:00:30,325 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ab82c9c-05d7-48a6-a268-fdd51a390406/bin/utaipan-I9t0OCRTmS/mathsat [2022-11-19 07:00:30,326 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ab82c9c-05d7-48a6-a268-fdd51a390406/bin/utaipan-I9t0OCRTmS/mathsat -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) [2022-11-19 07:00:30,335 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ab82c9c-05d7-48a6-a268-fdd51a390406/bin/utaipan-I9t0OCRTmS/mathsat -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 [2022-11-19 07:00:30,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:00:30,502 INFO L263 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-19 07:00:30,503 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:00:30,520 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:00:30,520 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 07:00:30,520 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-19 07:00:30,521 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [75681704] [2022-11-19 07:00:30,521 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [75681704] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:00:30,521 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:00:30,521 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 07:00:30,522 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [778411487] [2022-11-19 07:00:30,522 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:00:30,523 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 07:00:30,523 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-19 07:00:30,524 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 07:00:30,524 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 07:00:30,524 INFO L87 Difference]: Start difference. First operand 3192 states and 5405 transitions. Second operand has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 07:00:30,635 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:00:30,636 INFO L93 Difference]: Finished difference Result 3346 states and 5545 transitions. [2022-11-19 07:00:30,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 07:00:30,637 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2022-11-19 07:00:30,637 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:00:30,666 INFO L225 Difference]: With dead ends: 3346 [2022-11-19 07:00:30,667 INFO L226 Difference]: Without dead ends: 3346 [2022-11-19 07:00:30,667 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 07:00:30,668 INFO L413 NwaCegarLoop]: 3200 mSDtfsCounter, 1394 mSDsluCounter, 1315 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1894 SdHoareTripleChecker+Valid, 4515 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-19 07:00:30,669 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1894 Valid, 4515 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-19 07:00:30,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3346 states. [2022-11-19 07:00:31,053 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3346 to 3132. [2022-11-19 07:00:31,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3132 states, 1701 states have (on average 1.9476778365667256) internal successors, (3313), 3126 states have internal predecessors, (3313), 1003 states have call successors, (1003), 2 states have call predecessors, (1003), 2 states have return successors, (1003), 5 states have call predecessors, (1003), 1003 states have call successors, (1003) [2022-11-19 07:00:31,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3132 states to 3132 states and 5319 transitions. [2022-11-19 07:00:31,073 INFO L78 Accepts]: Start accepts. Automaton has 3132 states and 5319 transitions. Word has length 13 [2022-11-19 07:00:31,073 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:00:31,074 INFO L495 AbstractCegarLoop]: Abstraction has 3132 states and 5319 transitions. [2022-11-19 07:00:31,074 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 07:00:31,074 INFO L276 IsEmpty]: Start isEmpty. Operand 3132 states and 5319 transitions. [2022-11-19 07:00:31,075 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-11-19 07:00:31,076 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:00:31,076 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:00:31,093 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ab82c9c-05d7-48a6-a268-fdd51a390406/bin/utaipan-I9t0OCRTmS/mathsat -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 [2022-11-19 07:00:31,290 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ab82c9c-05d7-48a6-a268-fdd51a390406/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-19 07:00:31,291 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr534ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 533 more)] === [2022-11-19 07:00:31,292 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:00:31,292 INFO L85 PathProgramCache]: Analyzing trace with hash -579444504, now seen corresponding path program 1 times [2022-11-19 07:00:31,292 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-19 07:00:31,292 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [313212042] [2022-11-19 07:00:31,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:00:31,293 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 [2022-11-19 07:00:31,293 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ab82c9c-05d7-48a6-a268-fdd51a390406/bin/utaipan-I9t0OCRTmS/mathsat [2022-11-19 07:00:31,294 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ab82c9c-05d7-48a6-a268-fdd51a390406/bin/utaipan-I9t0OCRTmS/mathsat -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) [2022-11-19 07:00:31,334 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ab82c9c-05d7-48a6-a268-fdd51a390406/bin/utaipan-I9t0OCRTmS/mathsat -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 [2022-11-19 07:00:31,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:00:31,552 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-19 07:00:31,555 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:00:31,571 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:00:31,572 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:00:31,585 INFO L350 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 29 treesize of output 38 [2022-11-19 07:00:31,656 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-19 07:00:31,657 INFO L350 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 62 treesize of output 22 [2022-11-19 07:00:31,716 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:00:31,716 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 07:00:31,716 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-19 07:00:31,717 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [313212042] [2022-11-19 07:00:31,717 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [313212042] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:00:31,717 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:00:31,717 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-19 07:00:31,717 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [241752559] [2022-11-19 07:00:31,717 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:00:31,718 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-19 07:00:31,718 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-19 07:00:31,718 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-19 07:00:31,720 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-19 07:00:31,721 INFO L87 Difference]: Start difference. First operand 3132 states and 5319 transitions. Second operand has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 07:00:36,524 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:00:36,524 INFO L93 Difference]: Finished difference Result 5449 states and 9667 transitions. [2022-11-19 07:00:36,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-19 07:00:36,525 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2022-11-19 07:00:36,525 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:00:36,552 INFO L225 Difference]: With dead ends: 5449 [2022-11-19 07:00:36,552 INFO L226 Difference]: Without dead ends: 5449 [2022-11-19 07:00:36,552 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-19 07:00:36,553 INFO L413 NwaCegarLoop]: 3459 mSDtfsCounter, 1330 mSDsluCounter, 5841 mSDsCounter, 0 mSdLazyCounter, 674 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1830 SdHoareTripleChecker+Valid, 9300 SdHoareTripleChecker+Invalid, 712 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 674 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 37 IncrementalHoareTripleChecker+Unchecked, 4.6s IncrementalHoareTripleChecker+Time [2022-11-19 07:00:36,554 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1830 Valid, 9300 Invalid, 712 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 674 Invalid, 0 Unknown, 37 Unchecked, 4.6s Time] [2022-11-19 07:00:36,562 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5449 states. [2022-11-19 07:00:37,197 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5449 to 3131. [2022-11-19 07:00:37,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3131 states, 1700 states have (on average 1.9476470588235295) internal successors, (3311), 3125 states have internal predecessors, (3311), 1003 states have call successors, (1003), 2 states have call predecessors, (1003), 2 states have return successors, (1003), 5 states have call predecessors, (1003), 1003 states have call successors, (1003) [2022-11-19 07:00:37,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3131 states to 3131 states and 5317 transitions. [2022-11-19 07:00:37,216 INFO L78 Accepts]: Start accepts. Automaton has 3131 states and 5317 transitions. Word has length 14 [2022-11-19 07:00:37,216 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:00:37,216 INFO L495 AbstractCegarLoop]: Abstraction has 3131 states and 5317 transitions. [2022-11-19 07:00:37,217 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 07:00:37,217 INFO L276 IsEmpty]: Start isEmpty. Operand 3131 states and 5317 transitions. [2022-11-19 07:00:37,218 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-11-19 07:00:37,218 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:00:37,218 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:00:37,241 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ab82c9c-05d7-48a6-a268-fdd51a390406/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2022-11-19 07:00:37,440 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ab82c9c-05d7-48a6-a268-fdd51a390406/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-19 07:00:37,441 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr14REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 533 more)] === [2022-11-19 07:00:37,441 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:00:37,441 INFO L85 PathProgramCache]: Analyzing trace with hash -344619170, now seen corresponding path program 1 times [2022-11-19 07:00:37,442 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-19 07:00:37,442 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [183921232] [2022-11-19 07:00:37,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:00:37,442 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 [2022-11-19 07:00:37,443 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ab82c9c-05d7-48a6-a268-fdd51a390406/bin/utaipan-I9t0OCRTmS/mathsat [2022-11-19 07:00:37,444 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ab82c9c-05d7-48a6-a268-fdd51a390406/bin/utaipan-I9t0OCRTmS/mathsat -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) [2022-11-19 07:00:37,491 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ab82c9c-05d7-48a6-a268-fdd51a390406/bin/utaipan-I9t0OCRTmS/mathsat -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 [2022-11-19 07:00:37,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:00:37,699 INFO L263 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-19 07:00:37,701 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:00:37,718 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:00:37,718 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 07:00:37,719 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-19 07:00:37,719 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [183921232] [2022-11-19 07:00:37,719 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [183921232] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:00:37,719 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:00:37,720 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 07:00:37,720 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [115283531] [2022-11-19 07:00:37,720 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:00:37,721 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 07:00:37,721 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-19 07:00:37,722 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 07:00:37,722 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 07:00:37,723 INFO L87 Difference]: Start difference. First operand 3131 states and 5317 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) [2022-11-19 07:00:37,778 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:00:37,778 INFO L93 Difference]: Finished difference Result 3071 states and 5231 transitions. [2022-11-19 07:00:37,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 07:00:37,779 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 [2022-11-19 07:00:37,779 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:00:37,791 INFO L225 Difference]: With dead ends: 3071 [2022-11-19 07:00:37,791 INFO L226 Difference]: Without dead ends: 3071 [2022-11-19 07:00:37,791 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 [2022-11-19 07:00:37,792 INFO L413 NwaCegarLoop]: 2952 mSDtfsCounter, 1931 mSDsluCounter, 527 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2434 SdHoareTripleChecker+Valid, 3479 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-19 07:00:37,793 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2434 Valid, 3479 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-19 07:00:37,797 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3071 states. [2022-11-19 07:00:38,177 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3071 to 3071. [2022-11-19 07:00:38,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3071 states, 1664 states have (on average 1.9381009615384615) internal successors, (3225), 3065 states have internal predecessors, (3225), 1003 states have call successors, (1003), 2 states have call predecessors, (1003), 2 states have return successors, (1003), 5 states have call predecessors, (1003), 1003 states have call successors, (1003) [2022-11-19 07:00:38,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3071 states to 3071 states and 5231 transitions. [2022-11-19 07:00:38,196 INFO L78 Accepts]: Start accepts. Automaton has 3071 states and 5231 transitions. Word has length 18 [2022-11-19 07:00:38,196 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:00:38,196 INFO L495 AbstractCegarLoop]: Abstraction has 3071 states and 5231 transitions. [2022-11-19 07:00:38,196 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) [2022-11-19 07:00:38,197 INFO L276 IsEmpty]: Start isEmpty. Operand 3071 states and 5231 transitions. [2022-11-19 07:00:38,197 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-11-19 07:00:38,197 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:00:38,198 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] [2022-11-19 07:00:38,213 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ab82c9c-05d7-48a6-a268-fdd51a390406/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2022-11-19 07:00:38,412 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ab82c9c-05d7-48a6-a268-fdd51a390406/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-19 07:00:38,412 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr38REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 533 more)] === [2022-11-19 07:00:38,413 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:00:38,413 INFO L85 PathProgramCache]: Analyzing trace with hash -466544200, now seen corresponding path program 1 times [2022-11-19 07:00:38,413 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-19 07:00:38,414 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [214579116] [2022-11-19 07:00:38,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:00:38,414 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 [2022-11-19 07:00:38,414 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ab82c9c-05d7-48a6-a268-fdd51a390406/bin/utaipan-I9t0OCRTmS/mathsat [2022-11-19 07:00:38,416 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ab82c9c-05d7-48a6-a268-fdd51a390406/bin/utaipan-I9t0OCRTmS/mathsat -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) [2022-11-19 07:00:38,461 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ab82c9c-05d7-48a6-a268-fdd51a390406/bin/utaipan-I9t0OCRTmS/mathsat -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 [2022-11-19 07:00:38,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:00:38,659 INFO L263 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-19 07:00:38,661 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:00:38,695 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:00:38,696 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 07:00:38,696 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-19 07:00:38,696 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [214579116] [2022-11-19 07:00:38,696 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [214579116] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:00:38,697 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:00:38,697 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-19 07:00:38,697 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1324991577] [2022-11-19 07:00:38,698 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:00:38,699 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-19 07:00:38,699 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-19 07:00:38,700 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-19 07:00:38,700 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-19 07:00:38,700 INFO L87 Difference]: Start difference. First operand 3071 states and 5231 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) [2022-11-19 07:00:38,845 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:00:38,845 INFO L93 Difference]: Finished difference Result 3043 states and 5175 transitions. [2022-11-19 07:00:38,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-19 07:00:38,846 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 [2022-11-19 07:00:38,846 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:00:38,865 INFO L225 Difference]: With dead ends: 3043 [2022-11-19 07:00:38,866 INFO L226 Difference]: Without dead ends: 3043 [2022-11-19 07:00:38,866 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 [2022-11-19 07:00:38,867 INFO L413 NwaCegarLoop]: 2907 mSDtfsCounter, 1912 mSDsluCounter, 3427 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2415 SdHoareTripleChecker+Valid, 6334 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-19 07:00:38,868 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2415 Valid, 6334 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-19 07:00:38,873 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3043 states. [2022-11-19 07:00:39,404 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3043 to 3041. [2022-11-19 07:00:39,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3041 states, 1648 states have (on average 1.9217233009708738) internal successors, (3167), 3035 states have internal predecessors, (3167), 1003 states have call successors, (1003), 2 states have call predecessors, (1003), 2 states have return successors, (1003), 5 states have call predecessors, (1003), 1003 states have call successors, (1003) [2022-11-19 07:00:39,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3041 states to 3041 states and 5173 transitions. [2022-11-19 07:00:39,429 INFO L78 Accepts]: Start accepts. Automaton has 3041 states and 5173 transitions. Word has length 20 [2022-11-19 07:00:39,429 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:00:39,429 INFO L495 AbstractCegarLoop]: Abstraction has 3041 states and 5173 transitions. [2022-11-19 07:00:39,429 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) [2022-11-19 07:00:39,430 INFO L276 IsEmpty]: Start isEmpty. Operand 3041 states and 5173 transitions. [2022-11-19 07:00:39,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-11-19 07:00:39,432 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:00:39,433 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] [2022-11-19 07:00:39,451 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ab82c9c-05d7-48a6-a268-fdd51a390406/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2022-11-19 07:00:39,648 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ab82c9c-05d7-48a6-a268-fdd51a390406/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-19 07:00:39,648 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr52REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 533 more)] === [2022-11-19 07:00:39,649 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:00:39,650 INFO L85 PathProgramCache]: Analyzing trace with hash 2117531686, now seen corresponding path program 1 times [2022-11-19 07:00:39,650 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-19 07:00:39,651 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [64239585] [2022-11-19 07:00:39,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:00:39,651 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 [2022-11-19 07:00:39,652 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ab82c9c-05d7-48a6-a268-fdd51a390406/bin/utaipan-I9t0OCRTmS/mathsat [2022-11-19 07:00:39,653 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ab82c9c-05d7-48a6-a268-fdd51a390406/bin/utaipan-I9t0OCRTmS/mathsat -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) [2022-11-19 07:00:39,654 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ab82c9c-05d7-48a6-a268-fdd51a390406/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2022-11-19 07:00:39,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:00:39,883 INFO L263 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-19 07:00:39,900 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:00:39,913 INFO L350 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 [2022-11-19 07:00:40,036 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:00:40,037 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 07:00:40,037 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-19 07:00:40,038 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [64239585] [2022-11-19 07:00:40,038 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [64239585] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:00:40,038 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:00:40,038 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 07:00:40,039 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1459019389] [2022-11-19 07:00:40,039 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:00:40,039 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-19 07:00:40,040 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-19 07:00:40,040 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-19 07:00:40,040 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-19 07:00:40,041 INFO L87 Difference]: Start difference. First operand 3041 states and 5173 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) [2022-11-19 07:00:46,863 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:00:46,864 INFO L93 Difference]: Finished difference Result 5472 states and 9669 transitions. [2022-11-19 07:00:46,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-19 07:00:46,866 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 [2022-11-19 07:00:46,867 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:00:46,886 INFO L225 Difference]: With dead ends: 5472 [2022-11-19 07:00:46,886 INFO L226 Difference]: Without dead ends: 5472 [2022-11-19 07:00:46,886 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-19 07:00:46,887 INFO L413 NwaCegarLoop]: 2986 mSDtfsCounter, 3438 mSDsluCounter, 3514 mSDsCounter, 0 mSdLazyCounter, 1871 mSolverCounterSat, 1019 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3438 SdHoareTripleChecker+Valid, 6500 SdHoareTripleChecker+Invalid, 2890 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1019 IncrementalHoareTripleChecker+Valid, 1871 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.6s IncrementalHoareTripleChecker+Time [2022-11-19 07:00:46,887 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3438 Valid, 6500 Invalid, 2890 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1019 Valid, 1871 Invalid, 0 Unknown, 0 Unchecked, 6.6s Time] [2022-11-19 07:00:46,894 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5472 states. [2022-11-19 07:00:47,405 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5472 to 3037. [2022-11-19 07:00:47,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3037 states, 1648 states have (on average 1.916868932038835) internal successors, (3159), 3031 states have internal predecessors, (3159), 1003 states have call successors, (1003), 2 states have call predecessors, (1003), 2 states have return successors, (1003), 5 states have call predecessors, (1003), 1003 states have call successors, (1003) [2022-11-19 07:00:47,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3037 states to 3037 states and 5165 transitions. [2022-11-19 07:00:47,420 INFO L78 Accepts]: Start accepts. Automaton has 3037 states and 5165 transitions. Word has length 34 [2022-11-19 07:00:47,421 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:00:47,421 INFO L495 AbstractCegarLoop]: Abstraction has 3037 states and 5165 transitions. [2022-11-19 07:00:47,421 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) [2022-11-19 07:00:47,421 INFO L276 IsEmpty]: Start isEmpty. Operand 3037 states and 5165 transitions. [2022-11-19 07:00:47,422 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-11-19 07:00:47,422 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:00:47,422 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] [2022-11-19 07:00:47,444 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ab82c9c-05d7-48a6-a268-fdd51a390406/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2022-11-19 07:00:47,636 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ab82c9c-05d7-48a6-a268-fdd51a390406/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-19 07:00:47,636 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr53REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 533 more)] === [2022-11-19 07:00:47,637 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:00:47,637 INFO L85 PathProgramCache]: Analyzing trace with hash 2117531687, now seen corresponding path program 1 times [2022-11-19 07:00:47,638 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-19 07:00:47,638 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1688013954] [2022-11-19 07:00:47,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:00:47,638 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 [2022-11-19 07:00:47,639 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ab82c9c-05d7-48a6-a268-fdd51a390406/bin/utaipan-I9t0OCRTmS/mathsat [2022-11-19 07:00:47,640 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ab82c9c-05d7-48a6-a268-fdd51a390406/bin/utaipan-I9t0OCRTmS/mathsat -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) [2022-11-19 07:00:47,687 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ab82c9c-05d7-48a6-a268-fdd51a390406/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2022-11-19 07:00:47,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:00:47,853 INFO L263 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-19 07:00:47,856 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:00:47,867 INFO L350 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 [2022-11-19 07:00:48,101 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:00:48,101 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 07:00:48,102 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-19 07:00:48,102 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1688013954] [2022-11-19 07:00:48,102 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1688013954] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:00:48,102 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:00:48,102 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 07:00:48,102 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1829805804] [2022-11-19 07:00:48,103 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:00:48,103 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-19 07:00:48,103 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-19 07:00:48,103 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-19 07:00:48,104 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-19 07:00:48,104 INFO L87 Difference]: Start difference. First operand 3037 states and 5165 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) [2022-11-19 07:00:57,587 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:00:57,587 INFO L93 Difference]: Finished difference Result 5529 states and 9691 transitions. [2022-11-19 07:00:57,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-19 07:00:57,588 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 [2022-11-19 07:00:57,588 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:00:57,609 INFO L225 Difference]: With dead ends: 5529 [2022-11-19 07:00:57,609 INFO L226 Difference]: Without dead ends: 5529 [2022-11-19 07:00:57,610 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-19 07:00:57,611 INFO L413 NwaCegarLoop]: 5150 mSDtfsCounter, 2908 mSDsluCounter, 4926 mSDsCounter, 0 mSdLazyCounter, 2170 mSolverCounterSat, 1004 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2908 SdHoareTripleChecker+Valid, 10076 SdHoareTripleChecker+Invalid, 3174 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1004 IncrementalHoareTripleChecker+Valid, 2170 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.3s IncrementalHoareTripleChecker+Time [2022-11-19 07:00:57,611 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2908 Valid, 10076 Invalid, 3174 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1004 Valid, 2170 Invalid, 0 Unknown, 0 Unchecked, 9.3s Time] [2022-11-19 07:00:57,618 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5529 states. [2022-11-19 07:00:58,411 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5529 to 3033. [2022-11-19 07:00:58,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3033 states, 1648 states have (on average 1.9120145631067962) internal successors, (3151), 3027 states have internal predecessors, (3151), 1003 states have call successors, (1003), 2 states have call predecessors, (1003), 2 states have return successors, (1003), 5 states have call predecessors, (1003), 1003 states have call successors, (1003) [2022-11-19 07:00:58,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3033 states to 3033 states and 5157 transitions. [2022-11-19 07:00:58,427 INFO L78 Accepts]: Start accepts. Automaton has 3033 states and 5157 transitions. Word has length 34 [2022-11-19 07:00:58,428 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:00:58,428 INFO L495 AbstractCegarLoop]: Abstraction has 3033 states and 5157 transitions. [2022-11-19 07:00:58,428 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) [2022-11-19 07:00:58,428 INFO L276 IsEmpty]: Start isEmpty. Operand 3033 states and 5157 transitions. [2022-11-19 07:00:58,430 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2022-11-19 07:00:58,430 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:00:58,430 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:00:58,446 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ab82c9c-05d7-48a6-a268-fdd51a390406/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2022-11-19 07:00:58,643 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ab82c9c-05d7-48a6-a268-fdd51a390406/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-19 07:00:58,643 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr71REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 533 more)] === [2022-11-19 07:00:58,644 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:00:58,645 INFO L85 PathProgramCache]: Analyzing trace with hash 1509555205, now seen corresponding path program 1 times [2022-11-19 07:00:58,645 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-19 07:00:58,646 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [938644405] [2022-11-19 07:00:58,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:00:58,646 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 [2022-11-19 07:00:58,646 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ab82c9c-05d7-48a6-a268-fdd51a390406/bin/utaipan-I9t0OCRTmS/mathsat [2022-11-19 07:00:58,647 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ab82c9c-05d7-48a6-a268-fdd51a390406/bin/utaipan-I9t0OCRTmS/mathsat -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) [2022-11-19 07:00:58,649 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ab82c9c-05d7-48a6-a268-fdd51a390406/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2022-11-19 07:00:58,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:00:58,989 INFO L263 TraceCheckSpWp]: Trace formula consists of 256 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-19 07:00:58,991 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:00:59,060 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:00:59,060 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 07:00:59,061 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-19 07:00:59,061 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [938644405] [2022-11-19 07:00:59,061 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [938644405] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:00:59,061 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:00:59,061 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-19 07:00:59,061 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [414792795] [2022-11-19 07:00:59,062 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:00:59,062 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-19 07:00:59,062 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-19 07:00:59,063 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-19 07:00:59,063 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-19 07:00:59,063 INFO L87 Difference]: Start difference. First operand 3033 states and 5157 transitions. Second operand has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 07:00:59,182 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:00:59,182 INFO L93 Difference]: Finished difference Result 3021 states and 5137 transitions. [2022-11-19 07:00:59,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-19 07:00:59,183 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 52 [2022-11-19 07:00:59,183 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:00:59,199 INFO L225 Difference]: With dead ends: 3021 [2022-11-19 07:00:59,199 INFO L226 Difference]: Without dead ends: 3021 [2022-11-19 07:00:59,199 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-19 07:00:59,200 INFO L413 NwaCegarLoop]: 2901 mSDtfsCounter, 1881 mSDsluCounter, 3411 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2384 SdHoareTripleChecker+Valid, 6312 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-19 07:00:59,201 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2384 Valid, 6312 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-19 07:00:59,206 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3021 states. [2022-11-19 07:00:59,701 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3021 to 3021. [2022-11-19 07:00:59,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3021 states, 1636 states have (on average 1.9138141809290954) internal successors, (3131), 3015 states have internal predecessors, (3131), 1003 states have call successors, (1003), 2 states have call predecessors, (1003), 2 states have return successors, (1003), 5 states have call predecessors, (1003), 1003 states have call successors, (1003) [2022-11-19 07:00:59,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3021 states to 3021 states and 5137 transitions. [2022-11-19 07:00:59,717 INFO L78 Accepts]: Start accepts. Automaton has 3021 states and 5137 transitions. Word has length 52 [2022-11-19 07:00:59,719 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:00:59,720 INFO L495 AbstractCegarLoop]: Abstraction has 3021 states and 5137 transitions. [2022-11-19 07:00:59,720 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 07:00:59,720 INFO L276 IsEmpty]: Start isEmpty. Operand 3021 states and 5137 transitions. [2022-11-19 07:00:59,724 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2022-11-19 07:00:59,724 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:00:59,725 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:00:59,747 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ab82c9c-05d7-48a6-a268-fdd51a390406/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2022-11-19 07:00:59,943 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ab82c9c-05d7-48a6-a268-fdd51a390406/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-19 07:00:59,943 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr71REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 533 more)] === [2022-11-19 07:00:59,944 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:00:59,944 INFO L85 PathProgramCache]: Analyzing trace with hash -881686959, now seen corresponding path program 1 times [2022-11-19 07:00:59,945 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-19 07:00:59,945 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1037887319] [2022-11-19 07:00:59,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:00:59,945 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 [2022-11-19 07:00:59,945 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ab82c9c-05d7-48a6-a268-fdd51a390406/bin/utaipan-I9t0OCRTmS/mathsat [2022-11-19 07:00:59,947 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ab82c9c-05d7-48a6-a268-fdd51a390406/bin/utaipan-I9t0OCRTmS/mathsat -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) [2022-11-19 07:00:59,955 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ab82c9c-05d7-48a6-a268-fdd51a390406/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2022-11-19 07:01:00,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:01:00,466 INFO L263 TraceCheckSpWp]: Trace formula consists of 280 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-19 07:01:00,470 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:01:00,482 INFO L350 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 [2022-11-19 07:01:00,490 INFO L350 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 [2022-11-19 07:01:01,192 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:01:01,194 INFO L350 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 12 treesize of output 14 [2022-11-19 07:01:01,215 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-19 07:01:01,215 INFO L350 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 [2022-11-19 07:01:01,240 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:01:01,240 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 07:01:01,240 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-19 07:01:01,240 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1037887319] [2022-11-19 07:01:01,240 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1037887319] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:01:01,241 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:01:01,241 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 07:01:01,241 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1476033989] [2022-11-19 07:01:01,241 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:01:01,242 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-19 07:01:01,242 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-19 07:01:01,242 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-19 07:01:01,242 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-19 07:01:01,243 INFO L87 Difference]: Start difference. First operand 3021 states and 5137 transitions. Second operand has 4 states, 3 states have (on average 20.0) internal successors, (60), 4 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 07:01:08,875 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:01:08,875 INFO L93 Difference]: Finished difference Result 5223 states and 9398 transitions. [2022-11-19 07:01:08,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-19 07:01:08,876 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 20.0) internal successors, (60), 4 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 60 [2022-11-19 07:01:08,876 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:01:08,904 INFO L225 Difference]: With dead ends: 5223 [2022-11-19 07:01:08,904 INFO L226 Difference]: Without dead ends: 5223 [2022-11-19 07:01:08,905 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-19 07:01:08,905 INFO L413 NwaCegarLoop]: 2949 mSDtfsCounter, 2823 mSDsluCounter, 1272 mSDsCounter, 0 mSdLazyCounter, 2304 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3826 SdHoareTripleChecker+Valid, 4221 SdHoareTripleChecker+Invalid, 2347 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 2304 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.5s IncrementalHoareTripleChecker+Time [2022-11-19 07:01:08,906 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3826 Valid, 4221 Invalid, 2347 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 2304 Invalid, 0 Unknown, 0 Unchecked, 7.5s Time] [2022-11-19 07:01:08,912 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5223 states. [2022-11-19 07:01:09,668 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5223 to 2951. [2022-11-19 07:01:09,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2951 states, 1604 states have (on average 1.8871571072319202) internal successors, (3027), 2945 states have internal predecessors, (3027), 1003 states have call successors, (1003), 2 states have call predecessors, (1003), 2 states have return successors, (1003), 5 states have call predecessors, (1003), 1003 states have call successors, (1003) [2022-11-19 07:01:09,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2951 states to 2951 states and 5033 transitions. [2022-11-19 07:01:09,684 INFO L78 Accepts]: Start accepts. Automaton has 2951 states and 5033 transitions. Word has length 60 [2022-11-19 07:01:09,684 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:01:09,684 INFO L495 AbstractCegarLoop]: Abstraction has 2951 states and 5033 transitions. [2022-11-19 07:01:09,685 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 20.0) internal successors, (60), 4 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 07:01:09,685 INFO L276 IsEmpty]: Start isEmpty. Operand 2951 states and 5033 transitions. [2022-11-19 07:01:09,686 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-11-19 07:01:09,686 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:01:09,686 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:01:09,710 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ab82c9c-05d7-48a6-a268-fdd51a390406/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2022-11-19 07:01:09,910 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ab82c9c-05d7-48a6-a268-fdd51a390406/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-19 07:01:09,910 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr76REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 533 more)] === [2022-11-19 07:01:09,911 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:01:09,911 INFO L85 PathProgramCache]: Analyzing trace with hash -855470841, now seen corresponding path program 1 times [2022-11-19 07:01:09,912 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-19 07:01:09,912 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2130603152] [2022-11-19 07:01:09,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:01:09,912 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 [2022-11-19 07:01:09,913 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ab82c9c-05d7-48a6-a268-fdd51a390406/bin/utaipan-I9t0OCRTmS/mathsat [2022-11-19 07:01:09,914 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ab82c9c-05d7-48a6-a268-fdd51a390406/bin/utaipan-I9t0OCRTmS/mathsat -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) [2022-11-19 07:01:09,935 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ab82c9c-05d7-48a6-a268-fdd51a390406/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2022-11-19 07:01:10,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:01:10,264 INFO L263 TraceCheckSpWp]: Trace formula consists of 307 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-19 07:01:10,272 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:01:10,287 INFO L350 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 [2022-11-19 07:01:10,314 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-19 07:01:10,358 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2022-11-19 07:01:10,372 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:01:10,373 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 07:01:10,373 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-19 07:01:10,373 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2130603152] [2022-11-19 07:01:10,373 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2130603152] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:01:10,373 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:01:10,374 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-19 07:01:10,374 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1816815114] [2022-11-19 07:01:10,374 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:01:10,375 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-19 07:01:10,375 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-19 07:01:10,376 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-19 07:01:10,376 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-19 07:01:10,377 INFO L87 Difference]: Start difference. First operand 2951 states and 5033 transitions. Second operand has 5 states, 4 states have (on average 16.25) internal successors, (65), 5 states have internal predecessors, (65), 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) [2022-11-19 07:01:13,830 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:01:13,830 INFO L93 Difference]: Finished difference Result 2950 states and 5032 transitions. [2022-11-19 07:01:13,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-19 07:01:13,831 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 16.25) internal successors, (65), 5 states have internal predecessors, (65), 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 65 [2022-11-19 07:01:13,831 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:01:13,840 INFO L225 Difference]: With dead ends: 2950 [2022-11-19 07:01:13,840 INFO L226 Difference]: Without dead ends: 2950 [2022-11-19 07:01:13,841 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-11-19 07:01:13,841 INFO L413 NwaCegarLoop]: 2861 mSDtfsCounter, 4 mSDsluCounter, 7345 mSDsCounter, 0 mSdLazyCounter, 1243 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 10206 SdHoareTripleChecker+Invalid, 1244 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1243 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2022-11-19 07:01:13,842 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 10206 Invalid, 1244 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1243 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2022-11-19 07:01:13,845 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2950 states. [2022-11-19 07:01:14,230 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2950 to 2950. [2022-11-19 07:01:14,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2950 states, 1604 states have (on average 1.8865336658354115) internal successors, (3026), 2944 states have internal predecessors, (3026), 1003 states have call successors, (1003), 2 states have call predecessors, (1003), 2 states have return successors, (1003), 5 states have call predecessors, (1003), 1003 states have call successors, (1003) [2022-11-19 07:01:14,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2950 states to 2950 states and 5032 transitions. [2022-11-19 07:01:14,245 INFO L78 Accepts]: Start accepts. Automaton has 2950 states and 5032 transitions. Word has length 65 [2022-11-19 07:01:14,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:01:14,245 INFO L495 AbstractCegarLoop]: Abstraction has 2950 states and 5032 transitions. [2022-11-19 07:01:14,246 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 16.25) internal successors, (65), 5 states have internal predecessors, (65), 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) [2022-11-19 07:01:14,246 INFO L276 IsEmpty]: Start isEmpty. Operand 2950 states and 5032 transitions. [2022-11-19 07:01:14,246 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-11-19 07:01:14,247 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:01:14,247 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:01:14,269 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ab82c9c-05d7-48a6-a268-fdd51a390406/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2022-11-19 07:01:14,463 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ab82c9c-05d7-48a6-a268-fdd51a390406/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-19 07:01:14,463 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr77REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 533 more)] === [2022-11-19 07:01:14,463 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:01:14,463 INFO L85 PathProgramCache]: Analyzing trace with hash -855470840, now seen corresponding path program 1 times [2022-11-19 07:01:14,464 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-19 07:01:14,464 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1856389090] [2022-11-19 07:01:14,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:01:14,465 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 [2022-11-19 07:01:14,465 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ab82c9c-05d7-48a6-a268-fdd51a390406/bin/utaipan-I9t0OCRTmS/mathsat [2022-11-19 07:01:14,467 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ab82c9c-05d7-48a6-a268-fdd51a390406/bin/utaipan-I9t0OCRTmS/mathsat -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) [2022-11-19 07:01:14,483 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ab82c9c-05d7-48a6-a268-fdd51a390406/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2022-11-19 07:01:14,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:01:14,892 INFO L263 TraceCheckSpWp]: Trace formula consists of 307 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-19 07:01:14,896 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:01:14,924 INFO L350 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 [2022-11-19 07:01:14,949 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-19 07:01:14,971 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-19 07:01:15,044 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 9 [2022-11-19 07:01:15,055 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2022-11-19 07:01:15,078 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:01:15,079 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 07:01:15,079 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-19 07:01:15,079 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1856389090] [2022-11-19 07:01:15,079 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1856389090] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:01:15,079 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:01:15,079 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-19 07:01:15,079 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2130076715] [2022-11-19 07:01:15,080 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:01:15,080 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-19 07:01:15,080 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-19 07:01:15,080 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-19 07:01:15,081 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-19 07:01:15,081 INFO L87 Difference]: Start difference. First operand 2950 states and 5032 transitions. Second operand has 5 states, 4 states have (on average 16.25) internal successors, (65), 5 states have internal predecessors, (65), 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) [2022-11-19 07:01:19,698 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:01:19,698 INFO L93 Difference]: Finished difference Result 2949 states and 5031 transitions. [2022-11-19 07:01:19,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-19 07:01:19,699 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 16.25) internal successors, (65), 5 states have internal predecessors, (65), 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 65 [2022-11-19 07:01:19,699 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:01:19,707 INFO L225 Difference]: With dead ends: 2949 [2022-11-19 07:01:19,707 INFO L226 Difference]: Without dead ends: 2949 [2022-11-19 07:01:19,708 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-11-19 07:01:19,708 INFO L413 NwaCegarLoop]: 2861 mSDtfsCounter, 2 mSDsluCounter, 7381 mSDsCounter, 0 mSdLazyCounter, 1205 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 10242 SdHoareTripleChecker+Invalid, 1206 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1205 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.5s IncrementalHoareTripleChecker+Time [2022-11-19 07:01:19,709 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 10242 Invalid, 1206 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1205 Invalid, 0 Unknown, 0 Unchecked, 4.5s Time] [2022-11-19 07:01:19,712 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2949 states. [2022-11-19 07:01:19,962 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2949 to 2949. [2022-11-19 07:01:19,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2949 states, 1603 states have (on average 1.8870867124142234) internal successors, (3025), 2943 states have internal predecessors, (3025), 1003 states have call successors, (1003), 2 states have call predecessors, (1003), 2 states have return successors, (1003), 5 states have call predecessors, (1003), 1003 states have call successors, (1003) [2022-11-19 07:01:19,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2949 states to 2949 states and 5031 transitions. [2022-11-19 07:01:19,977 INFO L78 Accepts]: Start accepts. Automaton has 2949 states and 5031 transitions. Word has length 65 [2022-11-19 07:01:19,977 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:01:19,977 INFO L495 AbstractCegarLoop]: Abstraction has 2949 states and 5031 transitions. [2022-11-19 07:01:19,978 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 16.25) internal successors, (65), 5 states have internal predecessors, (65), 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) [2022-11-19 07:01:19,978 INFO L276 IsEmpty]: Start isEmpty. Operand 2949 states and 5031 transitions. [2022-11-19 07:01:19,979 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2022-11-19 07:01:19,979 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:01:19,979 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:01:19,998 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ab82c9c-05d7-48a6-a268-fdd51a390406/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2022-11-19 07:01:20,198 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ab82c9c-05d7-48a6-a268-fdd51a390406/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-19 07:01:20,198 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr81REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 533 more)] === [2022-11-19 07:01:20,199 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:01:20,199 INFO L85 PathProgramCache]: Analyzing trace with hash -517931281, now seen corresponding path program 1 times [2022-11-19 07:01:20,199 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-19 07:01:20,200 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [737959228] [2022-11-19 07:01:20,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:01:20,200 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 [2022-11-19 07:01:20,200 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ab82c9c-05d7-48a6-a268-fdd51a390406/bin/utaipan-I9t0OCRTmS/mathsat [2022-11-19 07:01:20,202 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ab82c9c-05d7-48a6-a268-fdd51a390406/bin/utaipan-I9t0OCRTmS/mathsat -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) [2022-11-19 07:01:20,241 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ab82c9c-05d7-48a6-a268-fdd51a390406/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2022-11-19 07:01:20,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:01:20,640 INFO L263 TraceCheckSpWp]: Trace formula consists of 334 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-19 07:01:20,644 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:01:20,672 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:01:20,672 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 07:01:20,672 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-19 07:01:20,673 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [737959228] [2022-11-19 07:01:20,673 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [737959228] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:01:20,673 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:01:20,673 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-19 07:01:20,674 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2077013480] [2022-11-19 07:01:20,674 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:01:20,675 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-19 07:01:20,675 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-19 07:01:20,676 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-19 07:01:20,676 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-19 07:01:20,676 INFO L87 Difference]: Start difference. First operand 2949 states and 5031 transitions. Second operand has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-19 07:01:20,790 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:01:20,791 INFO L93 Difference]: Finished difference Result 2952 states and 5035 transitions. [2022-11-19 07:01:20,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-19 07:01:20,792 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 73 [2022-11-19 07:01:20,792 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:01:20,818 INFO L225 Difference]: With dead ends: 2952 [2022-11-19 07:01:20,818 INFO L226 Difference]: Without dead ends: 2952 [2022-11-19 07:01:20,818 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 70 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-19 07:01:20,820 INFO L413 NwaCegarLoop]: 2861 mSDtfsCounter, 2 mSDsluCounter, 5717 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 8578 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-19 07:01:20,820 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 8578 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-19 07:01:20,824 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2952 states. [2022-11-19 07:01:21,226 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2952 to 2952. [2022-11-19 07:01:21,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2952 states, 1605 states have (on average 1.8866043613707164) internal successors, (3028), 2946 states have internal predecessors, (3028), 1003 states have call successors, (1003), 2 states have call predecessors, (1003), 3 states have return successors, (1004), 5 states have call predecessors, (1004), 1003 states have call successors, (1004) [2022-11-19 07:01:21,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2952 states to 2952 states and 5035 transitions. [2022-11-19 07:01:21,243 INFO L78 Accepts]: Start accepts. Automaton has 2952 states and 5035 transitions. Word has length 73 [2022-11-19 07:01:21,243 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:01:21,243 INFO L495 AbstractCegarLoop]: Abstraction has 2952 states and 5035 transitions. [2022-11-19 07:01:21,243 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-19 07:01:21,244 INFO L276 IsEmpty]: Start isEmpty. Operand 2952 states and 5035 transitions. [2022-11-19 07:01:21,244 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-11-19 07:01:21,244 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:01:21,245 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:01:21,263 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ab82c9c-05d7-48a6-a268-fdd51a390406/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2022-11-19 07:01:21,459 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ab82c9c-05d7-48a6-a268-fdd51a390406/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-19 07:01:21,459 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr81REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 533 more)] === [2022-11-19 07:01:21,460 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:01:21,460 INFO L85 PathProgramCache]: Analyzing trace with hash -563037036, now seen corresponding path program 1 times [2022-11-19 07:01:21,460 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-19 07:01:21,461 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1291910592] [2022-11-19 07:01:21,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:01:21,461 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 [2022-11-19 07:01:21,461 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ab82c9c-05d7-48a6-a268-fdd51a390406/bin/utaipan-I9t0OCRTmS/mathsat [2022-11-19 07:01:21,463 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ab82c9c-05d7-48a6-a268-fdd51a390406/bin/utaipan-I9t0OCRTmS/mathsat -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) [2022-11-19 07:01:21,469 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ab82c9c-05d7-48a6-a268-fdd51a390406/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2022-11-19 07:01:21,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:01:21,874 INFO L263 TraceCheckSpWp]: Trace formula consists of 345 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-19 07:01:21,876 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:01:21,922 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:01:21,922 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 07:01:22,043 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:01:22,043 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-19 07:01:22,043 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1291910592] [2022-11-19 07:01:22,044 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1291910592] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 07:01:22,044 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [783777911] [2022-11-19 07:01:22,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:01:22,044 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-19 07:01:22,045 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ab82c9c-05d7-48a6-a268-fdd51a390406/bin/utaipan-I9t0OCRTmS/cvc4 [2022-11-19 07:01:22,049 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ab82c9c-05d7-48a6-a268-fdd51a390406/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-19 07:01:22,074 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ab82c9c-05d7-48a6-a268-fdd51a390406/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt (20)] Waiting until timeout for monitored process [2022-11-19 07:01:22,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:01:22,752 INFO L263 TraceCheckSpWp]: Trace formula consists of 345 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-19 07:01:22,755 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:01:22,780 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:01:22,781 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 07:01:22,847 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:01:22,848 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [783777911] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 07:01:22,848 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1753761112] [2022-11-19 07:01:22,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:01:22,848 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:01:22,849 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ab82c9c-05d7-48a6-a268-fdd51a390406/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 07:01:22,855 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ab82c9c-05d7-48a6-a268-fdd51a390406/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 07:01:22,868 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ab82c9c-05d7-48a6-a268-fdd51a390406/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2022-11-19 07:01:23,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:01:23,256 INFO L263 TraceCheckSpWp]: Trace formula consists of 345 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-19 07:01:23,258 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:01:23,279 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:01:23,279 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 07:01:23,329 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:01:23,330 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1753761112] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 07:01:23,330 INFO L184 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2022-11-19 07:01:23,330 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5, 5, 5, 5] total 8 [2022-11-19 07:01:23,331 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1514557635] [2022-11-19 07:01:23,331 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2022-11-19 07:01:23,332 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-19 07:01:23,332 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-19 07:01:23,332 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-19 07:01:23,334 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-19 07:01:23,334 INFO L87 Difference]: Start difference. First operand 2952 states and 5035 transitions. Second operand has 8 states, 8 states have (on average 9.5) internal successors, (76), 8 states have internal predecessors, (76), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-19 07:01:23,626 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:01:23,626 INFO L93 Difference]: Finished difference Result 2964 states and 5052 transitions. [2022-11-19 07:01:23,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-19 07:01:23,628 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.5) internal successors, (76), 8 states have internal predecessors, (76), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 74 [2022-11-19 07:01:23,628 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:01:23,641 INFO L225 Difference]: With dead ends: 2964 [2022-11-19 07:01:23,642 INFO L226 Difference]: Without dead ends: 2964 [2022-11-19 07:01:23,642 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 443 GetRequests, 432 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=62, Invalid=94, Unknown=0, NotChecked=0, Total=156 [2022-11-19 07:01:23,643 INFO L413 NwaCegarLoop]: 2862 mSDtfsCounter, 20 mSDsluCounter, 8574 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 11436 SdHoareTripleChecker+Invalid, 63 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-19 07:01:23,643 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 11436 Invalid, 63 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-19 07:01:23,647 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2964 states. [2022-11-19 07:01:24,013 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2964 to 2962. [2022-11-19 07:01:24,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2962 states, 1614 states have (on average 1.885377942998761) internal successors, (3043), 2955 states have internal predecessors, (3043), 1003 states have call successors, (1003), 3 states have call predecessors, (1003), 4 states have return successors, (1004), 5 states have call predecessors, (1004), 1003 states have call successors, (1004) [2022-11-19 07:01:24,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2962 states to 2962 states and 5050 transitions. [2022-11-19 07:01:24,030 INFO L78 Accepts]: Start accepts. Automaton has 2962 states and 5050 transitions. Word has length 74 [2022-11-19 07:01:24,030 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:01:24,030 INFO L495 AbstractCegarLoop]: Abstraction has 2962 states and 5050 transitions. [2022-11-19 07:01:24,030 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.5) internal successors, (76), 8 states have internal predecessors, (76), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-19 07:01:24,031 INFO L276 IsEmpty]: Start isEmpty. Operand 2962 states and 5050 transitions. [2022-11-19 07:01:24,031 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-11-19 07:01:24,031 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:01:24,032 INFO L195 NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:01:24,043 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ab82c9c-05d7-48a6-a268-fdd51a390406/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt (20)] Forceful destruction successful, exit code 0 [2022-11-19 07:01:24,256 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ab82c9c-05d7-48a6-a268-fdd51a390406/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2022-11-19 07:01:24,470 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ab82c9c-05d7-48a6-a268-fdd51a390406/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2022-11-19 07:01:24,647 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ab82c9c-05d7-48a6-a268-fdd51a390406/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt,21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ab82c9c-05d7-48a6-a268-fdd51a390406/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true,19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ab82c9c-05d7-48a6-a268-fdd51a390406/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-19 07:01:24,647 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr81REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 533 more)] === [2022-11-19 07:01:24,648 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:01:24,648 INFO L85 PathProgramCache]: Analyzing trace with hash -1779056593, now seen corresponding path program 2 times [2022-11-19 07:01:24,649 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-19 07:01:24,649 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1087024422] [2022-11-19 07:01:24,649 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-19 07:01:24,649 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 [2022-11-19 07:01:24,649 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ab82c9c-05d7-48a6-a268-fdd51a390406/bin/utaipan-I9t0OCRTmS/mathsat [2022-11-19 07:01:24,651 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ab82c9c-05d7-48a6-a268-fdd51a390406/bin/utaipan-I9t0OCRTmS/mathsat -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) [2022-11-19 07:01:24,695 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ab82c9c-05d7-48a6-a268-fdd51a390406/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2022-11-19 07:01:25,360 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-19 07:01:25,361 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-19 07:01:25,386 INFO L263 TraceCheckSpWp]: Trace formula consists of 378 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-19 07:01:25,388 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:01:25,473 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:01:25,473 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 07:01:25,784 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:01:25,784 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-19 07:01:25,785 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1087024422] [2022-11-19 07:01:25,785 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1087024422] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 07:01:25,785 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [84155087] [2022-11-19 07:01:25,785 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-19 07:01:25,786 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-19 07:01:25,786 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ab82c9c-05d7-48a6-a268-fdd51a390406/bin/utaipan-I9t0OCRTmS/cvc4 [2022-11-19 07:01:25,787 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ab82c9c-05d7-48a6-a268-fdd51a390406/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-19 07:01:25,799 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ab82c9c-05d7-48a6-a268-fdd51a390406/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt (23)] Waiting until timeout for monitored process [2022-11-19 07:01:27,886 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-19 07:01:27,886 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-19 07:01:27,926 INFO L263 TraceCheckSpWp]: Trace formula consists of 378 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-19 07:01:27,928 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:01:27,954 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:01:27,954 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 07:01:28,068 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:01:28,068 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [84155087] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 07:01:28,069 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [900821353] [2022-11-19 07:01:28,069 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-19 07:01:28,069 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:01:28,069 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ab82c9c-05d7-48a6-a268-fdd51a390406/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 07:01:28,071 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ab82c9c-05d7-48a6-a268-fdd51a390406/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 07:01:28,083 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ab82c9c-05d7-48a6-a268-fdd51a390406/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2022-11-19 07:02:07,193 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-19 07:02:07,193 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-19 07:02:07,221 INFO L263 TraceCheckSpWp]: Trace formula consists of 378 conjuncts, 29 conjunts are in the unsatisfiable core [2022-11-19 07:02:07,226 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:02:07,402 INFO L350 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 [2022-11-19 07:02:07,417 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-19 07:02:07,418 INFO L350 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 [2022-11-19 07:02:07,483 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-19 07:02:07,500 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-19 07:02:07,729 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 10 [2022-11-19 07:02:07,736 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2022-11-19 07:02:07,861 WARN L859 $PredicateComparison]: unable to prove that (and (exists ((v_ArrVal_1619 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_1619))) (exists ((v_ArrVal_1618 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_1618))) (exists ((v_arrayElimCell_16 (_ BitVec 32))) (= (_ bv44 32) (select |c_#length| v_arrayElimCell_16)))) is different from true [2022-11-19 07:02:07,884 WARN L859 $PredicateComparison]: unable to prove that (and (exists ((v_ArrVal_1621 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_1621))) (exists ((v_ArrVal_1620 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_1620))) (exists ((v_arrayElimCell_16 (_ BitVec 32))) (= (_ bv44 32) (select |c_#length| v_arrayElimCell_16)))) is different from true [2022-11-19 07:02:07,903 WARN L859 $PredicateComparison]: unable to prove that (and (exists ((v_ArrVal_1622 (Array (_ BitVec 32) (_ BitVec 32)))) (= (store |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_1622) |c_#memory_$Pointer$.offset|)) (exists ((v_ArrVal_1623 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_1623))) (exists ((v_arrayElimCell_16 (_ BitVec 32))) (= (_ bv44 32) (select |c_#length| v_arrayElimCell_16)))) is different from true [2022-11-19 07:02:08,089 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-19 07:02:08,089 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 46 treesize of output 45 [2022-11-19 07:02:08,104 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 24 [2022-11-19 07:02:08,211 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 13 [2022-11-19 07:02:08,223 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2022-11-19 07:02:08,289 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 9 not checked. [2022-11-19 07:02:08,289 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 07:02:08,745 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse0 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (and (forall ((v_ArrVal_1636 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_1637 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (_ bv20 32) (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem38#1.base| v_ArrVal_1637) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0)) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem38#1.base| v_ArrVal_1636) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0)))) (forall ((v_ArrVal_1637 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse1 (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem38#1.base| v_ArrVal_1637) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0))) (bvule (bvadd (_ bv16 32) .cse1) (bvadd (_ bv20 32) .cse1)))))) is different from false [2022-11-19 07:02:08,757 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [900821353] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-19 07:02:08,757 INFO L184 FreeRefinementEngine]: Found 0 perfect and 5 imperfect interpolant sequences. [2022-11-19 07:02:08,757 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8, 8, 12] total 25 [2022-11-19 07:02:08,758 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1687046893] [2022-11-19 07:02:08,758 INFO L85 oduleStraightlineAll]: Using 5 imperfect interpolants to construct interpolant automaton [2022-11-19 07:02:08,758 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-11-19 07:02:08,758 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-19 07:02:08,759 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-11-19 07:02:08,759 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=461, Unknown=14, NotChecked=188, Total=756 [2022-11-19 07:02:08,760 INFO L87 Difference]: Start difference. First operand 2962 states and 5050 transitions. Second operand has 25 states, 24 states have (on average 5.916666666666667) internal successors, (142), 25 states have internal predecessors, (142), 2 states have call successors, (2), 2 states have call predecessors, (2), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-19 07:02:35,605 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:02:35,605 INFO L93 Difference]: Finished difference Result 5226 states and 9382 transitions. [2022-11-19 07:02:35,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-11-19 07:02:35,607 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 24 states have (on average 5.916666666666667) internal successors, (142), 25 states have internal predecessors, (142), 2 states have call successors, (2), 2 states have call predecessors, (2), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 77 [2022-11-19 07:02:35,607 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:02:35,626 INFO L225 Difference]: With dead ends: 5226 [2022-11-19 07:02:35,626 INFO L226 Difference]: Without dead ends: 5218 [2022-11-19 07:02:35,627 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 403 GetRequests, 360 SyntacticMatches, 1 SemanticMatches, 42 ConstructedPredicates, 4 IntricatePredicates, 0 DeprecatedPredicates, 214 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=266, Invalid=1282, Unknown=28, NotChecked=316, Total=1892 [2022-11-19 07:02:35,628 INFO L413 NwaCegarLoop]: 3061 mSDtfsCounter, 4413 mSDsluCounter, 30205 mSDsCounter, 0 mSdLazyCounter, 8182 mSolverCounterSat, 1029 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 22.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4913 SdHoareTripleChecker+Valid, 33266 SdHoareTripleChecker+Invalid, 28860 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.3s SdHoareTripleChecker+Time, 1029 IncrementalHoareTripleChecker+Valid, 8182 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 19649 IncrementalHoareTripleChecker+Unchecked, 25.0s IncrementalHoareTripleChecker+Time [2022-11-19 07:02:35,629 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4913 Valid, 33266 Invalid, 28860 Unknown, 0 Unchecked, 0.3s Time], IncrementalHoareTripleChecker [1029 Valid, 8182 Invalid, 0 Unknown, 19649 Unchecked, 25.0s Time] [2022-11-19 07:02:35,633 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5218 states. [2022-11-19 07:02:36,468 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5218 to 2970. [2022-11-19 07:02:36,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2970 states, 1622 states have (on average 1.8810110974106042) internal successors, (3051), 2963 states have internal predecessors, (3051), 1003 states have call successors, (1003), 3 states have call predecessors, (1003), 4 states have return successors, (1004), 5 states have call predecessors, (1004), 1003 states have call successors, (1004) [2022-11-19 07:02:36,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2970 states to 2970 states and 5058 transitions. [2022-11-19 07:02:36,482 INFO L78 Accepts]: Start accepts. Automaton has 2970 states and 5058 transitions. Word has length 77 [2022-11-19 07:02:36,482 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:02:36,483 INFO L495 AbstractCegarLoop]: Abstraction has 2970 states and 5058 transitions. [2022-11-19 07:02:36,483 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 24 states have (on average 5.916666666666667) internal successors, (142), 25 states have internal predecessors, (142), 2 states have call successors, (2), 2 states have call predecessors, (2), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-19 07:02:36,483 INFO L276 IsEmpty]: Start isEmpty. Operand 2970 states and 5058 transitions. [2022-11-19 07:02:36,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2022-11-19 07:02:36,484 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:02:36,484 INFO L195 NwaCegarLoop]: trace histogram [9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:02:36,499 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ab82c9c-05d7-48a6-a268-fdd51a390406/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt (23)] Forceful destruction successful, exit code 0 [2022-11-19 07:02:36,724 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ab82c9c-05d7-48a6-a268-fdd51a390406/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (22)] Forceful destruction successful, exit code 0 [2022-11-19 07:02:36,926 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ab82c9c-05d7-48a6-a268-fdd51a390406/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2022-11-19 07:02:37,098 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ab82c9c-05d7-48a6-a268-fdd51a390406/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt,22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ab82c9c-05d7-48a6-a268-fdd51a390406/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ab82c9c-05d7-48a6-a268-fdd51a390406/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:02:37,099 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr81REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 533 more)] === [2022-11-19 07:02:37,100 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:02:37,100 INFO L85 PathProgramCache]: Analyzing trace with hash -1201264108, now seen corresponding path program 3 times [2022-11-19 07:02:37,101 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-19 07:02:37,101 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [908734430] [2022-11-19 07:02:37,101 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-19 07:02:37,101 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 [2022-11-19 07:02:37,101 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ab82c9c-05d7-48a6-a268-fdd51a390406/bin/utaipan-I9t0OCRTmS/mathsat [2022-11-19 07:02:37,103 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ab82c9c-05d7-48a6-a268-fdd51a390406/bin/utaipan-I9t0OCRTmS/mathsat -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) [2022-11-19 07:02:37,119 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ab82c9c-05d7-48a6-a268-fdd51a390406/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (25)] Waiting until timeout for monitored process [2022-11-19 07:02:38,005 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2022-11-19 07:02:38,005 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-19 07:02:38,027 INFO L263 TraceCheckSpWp]: Trace formula consists of 433 conjuncts, 13 conjunts are in the unsatisfiable core [2022-11-19 07:02:38,029 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:02:38,218 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:02:38,219 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 07:02:39,239 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:02:39,239 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-19 07:02:39,240 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [908734430] [2022-11-19 07:02:39,240 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [908734430] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 07:02:39,240 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [2082527438] [2022-11-19 07:02:39,240 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-19 07:02:39,240 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-19 07:02:39,241 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ab82c9c-05d7-48a6-a268-fdd51a390406/bin/utaipan-I9t0OCRTmS/cvc4 [2022-11-19 07:02:39,243 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ab82c9c-05d7-48a6-a268-fdd51a390406/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-19 07:02:39,244 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ab82c9c-05d7-48a6-a268-fdd51a390406/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt (26)] Waiting until timeout for monitored process [2022-11-19 07:02:45,457 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2022-11-19 07:02:45,457 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-19 07:02:45,474 INFO L263 TraceCheckSpWp]: Trace formula consists of 433 conjuncts, 13 conjunts are in the unsatisfiable core [2022-11-19 07:02:45,477 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:02:45,546 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:02:45,546 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 07:02:45,876 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:02:45,877 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [2082527438] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 07:02:45,877 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [332346368] [2022-11-19 07:02:45,877 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-19 07:02:45,877 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:02:45,877 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ab82c9c-05d7-48a6-a268-fdd51a390406/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 07:02:45,878 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ab82c9c-05d7-48a6-a268-fdd51a390406/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 07:02:45,882 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ab82c9c-05d7-48a6-a268-fdd51a390406/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process