./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test6-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version aef121e0 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b49bf88-4060-4c2b-904c-df318ad22bf5/bin/utaipan-EQgc7hIp5V/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b49bf88-4060-4c2b-904c-df318ad22bf5/bin/utaipan-EQgc7hIp5V/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b49bf88-4060-4c2b-904c-df318ad22bf5/bin/utaipan-EQgc7hIp5V/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b49bf88-4060-4c2b-904c-df318ad22bf5/bin/utaipan-EQgc7hIp5V/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test6-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b49bf88-4060-4c2b-904c-df318ad22bf5/bin/utaipan-EQgc7hIp5V/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b49bf88-4060-4c2b-904c-df318ad22bf5/bin/utaipan-EQgc7hIp5V --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 bb48026e7f870ff561a4cdd394c24cb5edb1d0f2fc8e8ef2bffe0b7b8438fda4 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-aef121e [2021-11-23 02:08:21,543 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-23 02:08:21,546 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-23 02:08:21,629 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-23 02:08:21,632 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-23 02:08:21,640 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-23 02:08:21,643 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-23 02:08:21,648 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-23 02:08:21,652 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-23 02:08:21,662 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-23 02:08:21,664 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-23 02:08:21,666 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-23 02:08:21,667 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-23 02:08:21,671 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-23 02:08:21,675 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-23 02:08:21,684 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-23 02:08:21,686 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-23 02:08:21,688 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-23 02:08:21,692 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-23 02:08:21,701 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-23 02:08:21,704 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-23 02:08:21,707 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-23 02:08:21,715 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-23 02:08:21,716 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-23 02:08:21,725 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-23 02:08:21,725 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-23 02:08:21,726 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-23 02:08:21,728 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-23 02:08:21,729 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-23 02:08:21,731 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-23 02:08:21,732 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-23 02:08:21,733 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-23 02:08:21,736 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-23 02:08:21,738 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-23 02:08:21,740 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-23 02:08:21,740 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-23 02:08:21,741 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-23 02:08:21,742 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-23 02:08:21,742 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-23 02:08:21,744 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-23 02:08:21,745 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-23 02:08:21,746 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b49bf88-4060-4c2b-904c-df318ad22bf5/bin/utaipan-EQgc7hIp5V/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2021-11-23 02:08:21,806 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-23 02:08:21,813 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-23 02:08:21,814 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-23 02:08:21,815 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-23 02:08:21,816 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-23 02:08:21,816 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-23 02:08:21,816 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-23 02:08:21,817 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-23 02:08:21,817 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-23 02:08:21,817 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-23 02:08:21,819 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-23 02:08:21,819 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-23 02:08:21,819 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-23 02:08:21,819 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-23 02:08:21,820 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-23 02:08:21,820 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-23 02:08:21,820 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-23 02:08:21,821 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-23 02:08:21,821 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-23 02:08:21,822 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-23 02:08:21,822 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-23 02:08:21,822 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-23 02:08:21,823 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-23 02:08:21,824 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-23 02:08:21,824 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-23 02:08:21,825 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-23 02:08:21,825 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-11-23 02:08:21,825 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-11-23 02:08:21,826 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-11-23 02:08:21,826 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-23 02:08:21,826 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-23 02:08:21,827 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-23 02:08:21,827 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-23 02:08:21,827 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-23 02:08:21,827 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-23 02:08:21,828 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 02:08:21,828 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-23 02:08:21,828 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-23 02:08:21,829 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-23 02:08:21,829 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-23 02:08:21,829 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-23 02:08:21,829 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-23 02:08:21,830 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b49bf88-4060-4c2b-904c-df318ad22bf5/bin/utaipan-EQgc7hIp5V/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b49bf88-4060-4c2b-904c-df318ad22bf5/bin/utaipan-EQgc7hIp5V Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> bb48026e7f870ff561a4cdd394c24cb5edb1d0f2fc8e8ef2bffe0b7b8438fda4 [2021-11-23 02:08:22,187 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-23 02:08:22,233 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-23 02:08:22,236 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-23 02:08:22,238 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-23 02:08:22,239 INFO L275 PluginConnector]: CDTParser initialized [2021-11-23 02:08:22,241 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b49bf88-4060-4c2b-904c-df318ad22bf5/bin/utaipan-EQgc7hIp5V/../../sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test6-2.i [2021-11-23 02:08:22,326 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b49bf88-4060-4c2b-904c-df318ad22bf5/bin/utaipan-EQgc7hIp5V/data/3a5258bb6/d77b533917f34913b1a9559381d926af/FLAG79da3ba1e [2021-11-23 02:08:23,134 INFO L306 CDTParser]: Found 1 translation units. [2021-11-23 02:08:23,135 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b49bf88-4060-4c2b-904c-df318ad22bf5/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test6-2.i [2021-11-23 02:08:23,166 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b49bf88-4060-4c2b-904c-df318ad22bf5/bin/utaipan-EQgc7hIp5V/data/3a5258bb6/d77b533917f34913b1a9559381d926af/FLAG79da3ba1e [2021-11-23 02:08:23,277 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b49bf88-4060-4c2b-904c-df318ad22bf5/bin/utaipan-EQgc7hIp5V/data/3a5258bb6/d77b533917f34913b1a9559381d926af [2021-11-23 02:08:23,280 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-23 02:08:23,289 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-23 02:08:23,293 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-23 02:08:23,294 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-23 02:08:23,299 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-23 02:08:23,300 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 02:08:23" (1/1) ... [2021-11-23 02:08:23,303 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@d72e76d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:08:23, skipping insertion in model container [2021-11-23 02:08:23,304 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 02:08:23" (1/1) ... [2021-11-23 02:08:23,314 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-23 02:08:23,408 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-23 02:08:24,296 WARN L230 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_4b49bf88-4060-4c2b-904c-df318ad22bf5/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test6-2.i[44118,44131] [2021-11-23 02:08:24,314 WARN L230 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_4b49bf88-4060-4c2b-904c-df318ad22bf5/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test6-2.i[44660,44673] [2021-11-23 02:08:24,554 WARN L230 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_4b49bf88-4060-4c2b-904c-df318ad22bf5/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test6-2.i[56247,56260] [2021-11-23 02:08:24,556 WARN L230 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_4b49bf88-4060-4c2b-904c-df318ad22bf5/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test6-2.i[56368,56381] [2021-11-23 02:08:24,577 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 02:08:24,598 ERROR L326 MainTranslator]: Unsupported Syntax: Found a cast between two array/pointer types where the value type is smaller than the cast-to type while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) [2021-11-23 02:08:24,599 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@3a63a77d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:08:24, skipping insertion in model container [2021-11-23 02:08:24,599 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-23 02:08:24,600 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-11-23 02:08:24,602 INFO L158 Benchmark]: Toolchain (without parser) took 1318.66ms. Allocated memory was 90.2MB in the beginning and 109.1MB in the end (delta: 18.9MB). Free memory was 49.5MB in the beginning and 71.1MB in the end (delta: -21.6MB). Peak memory consumption was 4.5MB. Max. memory is 16.1GB. [2021-11-23 02:08:24,607 INFO L158 Benchmark]: CDTParser took 0.32ms. Allocated memory is still 90.2MB. Free memory was 69.2MB in the beginning and 69.2MB in the end (delta: 49.3kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-23 02:08:24,609 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1306.58ms. Allocated memory was 90.2MB in the beginning and 109.1MB in the end (delta: 18.9MB). Free memory was 49.3MB in the beginning and 71.1MB in the end (delta: -21.9MB). Peak memory consumption was 4.5MB. Max. memory is 16.1GB. [2021-11-23 02:08:24,612 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.32ms. Allocated memory is still 90.2MB. Free memory was 69.2MB in the beginning and 69.2MB in the end (delta: 49.3kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1306.58ms. Allocated memory was 90.2MB in the beginning and 109.1MB in the end (delta: 18.9MB). Free memory was 49.3MB in the beginning and 71.1MB in the end (delta: -21.9MB). Peak memory consumption was 4.5MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 990]: Unsupported Syntax Found a cast between two array/pointer types where the value type is smaller than the cast-to type 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/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b49bf88-4060-4c2b-904c-df318ad22bf5/bin/utaipan-EQgc7hIp5V/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b49bf88-4060-4c2b-904c-df318ad22bf5/bin/utaipan-EQgc7hIp5V/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b49bf88-4060-4c2b-904c-df318ad22bf5/bin/utaipan-EQgc7hIp5V/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b49bf88-4060-4c2b-904c-df318ad22bf5/bin/utaipan-EQgc7hIp5V/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test6-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b49bf88-4060-4c2b-904c-df318ad22bf5/bin/utaipan-EQgc7hIp5V/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b49bf88-4060-4c2b-904c-df318ad22bf5/bin/utaipan-EQgc7hIp5V --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 bb48026e7f870ff561a4cdd394c24cb5edb1d0f2fc8e8ef2bffe0b7b8438fda4 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-aef121e [2021-11-23 02:08:27,542 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-23 02:08:27,546 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-23 02:08:27,624 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-23 02:08:27,625 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-23 02:08:27,629 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-23 02:08:27,631 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-23 02:08:27,634 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-23 02:08:27,637 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-23 02:08:27,639 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-23 02:08:27,641 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-23 02:08:27,643 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-23 02:08:27,643 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-23 02:08:27,645 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-23 02:08:27,647 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-23 02:08:27,650 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-23 02:08:27,651 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-23 02:08:27,653 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-23 02:08:27,656 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-23 02:08:27,660 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-23 02:08:27,663 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-23 02:08:27,665 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-23 02:08:27,667 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-23 02:08:27,669 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-23 02:08:27,674 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-23 02:08:27,675 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-23 02:08:27,675 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-23 02:08:27,677 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-23 02:08:27,678 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-23 02:08:27,679 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-23 02:08:27,680 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-23 02:08:27,681 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-23 02:08:27,683 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-23 02:08:27,684 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-23 02:08:27,688 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-23 02:08:27,689 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-23 02:08:27,690 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-23 02:08:27,691 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-23 02:08:27,691 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-23 02:08:27,693 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-23 02:08:27,695 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-23 02:08:27,696 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b49bf88-4060-4c2b-904c-df318ad22bf5/bin/utaipan-EQgc7hIp5V/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf [2021-11-23 02:08:27,738 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-23 02:08:27,738 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-23 02:08:27,739 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-23 02:08:27,739 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-23 02:08:27,740 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-23 02:08:27,740 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-23 02:08:27,743 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-23 02:08:27,743 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-23 02:08:27,743 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-23 02:08:27,743 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-23 02:08:27,745 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-23 02:08:27,745 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-23 02:08:27,747 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-23 02:08:27,747 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-23 02:08:27,748 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-23 02:08:27,748 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-23 02:08:27,748 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-23 02:08:27,749 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-23 02:08:27,749 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-23 02:08:27,749 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-23 02:08:27,749 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-11-23 02:08:27,750 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-11-23 02:08:27,750 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-11-23 02:08:27,750 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-23 02:08:27,751 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-23 02:08:27,751 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-23 02:08:27,751 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-23 02:08:27,751 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-23 02:08:27,752 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-23 02:08:27,752 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-23 02:08:27,752 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-23 02:08:27,753 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-23 02:08:27,753 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 02:08:27,753 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-23 02:08:27,754 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-23 02:08:27,754 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-23 02:08:27,754 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-23 02:08:27,755 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-23 02:08:27,755 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-23 02:08:27,755 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_4b49bf88-4060-4c2b-904c-df318ad22bf5/bin/utaipan-EQgc7hIp5V/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b49bf88-4060-4c2b-904c-df318ad22bf5/bin/utaipan-EQgc7hIp5V Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> bb48026e7f870ff561a4cdd394c24cb5edb1d0f2fc8e8ef2bffe0b7b8438fda4 [2021-11-23 02:08:28,288 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-23 02:08:28,335 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-23 02:08:28,340 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-23 02:08:28,342 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-23 02:08:28,343 INFO L275 PluginConnector]: CDTParser initialized [2021-11-23 02:08:28,345 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b49bf88-4060-4c2b-904c-df318ad22bf5/bin/utaipan-EQgc7hIp5V/../../sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test6-2.i [2021-11-23 02:08:28,444 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b49bf88-4060-4c2b-904c-df318ad22bf5/bin/utaipan-EQgc7hIp5V/data/ae81aab10/1bd1de9ca2c3477b8d99092838828c77/FLAG9cb87494a [2021-11-23 02:08:29,322 INFO L306 CDTParser]: Found 1 translation units. [2021-11-23 02:08:29,328 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b49bf88-4060-4c2b-904c-df318ad22bf5/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test6-2.i [2021-11-23 02:08:29,353 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b49bf88-4060-4c2b-904c-df318ad22bf5/bin/utaipan-EQgc7hIp5V/data/ae81aab10/1bd1de9ca2c3477b8d99092838828c77/FLAG9cb87494a [2021-11-23 02:08:29,409 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b49bf88-4060-4c2b-904c-df318ad22bf5/bin/utaipan-EQgc7hIp5V/data/ae81aab10/1bd1de9ca2c3477b8d99092838828c77 [2021-11-23 02:08:29,412 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-23 02:08:29,414 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-23 02:08:29,415 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-23 02:08:29,416 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-23 02:08:29,420 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-23 02:08:29,422 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 02:08:29" (1/1) ... [2021-11-23 02:08:29,423 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2136a8c3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:08:29, skipping insertion in model container [2021-11-23 02:08:29,423 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 02:08:29" (1/1) ... [2021-11-23 02:08:29,433 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-23 02:08:29,507 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-23 02:08:30,428 WARN L230 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_4b49bf88-4060-4c2b-904c-df318ad22bf5/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test6-2.i[44118,44131] [2021-11-23 02:08:30,453 WARN L230 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_4b49bf88-4060-4c2b-904c-df318ad22bf5/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test6-2.i[44660,44673] [2021-11-23 02:08:30,695 WARN L230 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_4b49bf88-4060-4c2b-904c-df318ad22bf5/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test6-2.i[56247,56260] [2021-11-23 02:08:30,697 WARN L230 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_4b49bf88-4060-4c2b-904c-df318ad22bf5/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test6-2.i[56368,56381] [2021-11-23 02:08:30,717 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 02:08:30,749 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-23 02:08:30,764 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-23 02:08:30,785 WARN L230 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_4b49bf88-4060-4c2b-904c-df318ad22bf5/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test6-2.i[44118,44131] [2021-11-23 02:08:30,788 WARN L230 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_4b49bf88-4060-4c2b-904c-df318ad22bf5/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test6-2.i[44660,44673] [2021-11-23 02:08:30,889 WARN L230 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_4b49bf88-4060-4c2b-904c-df318ad22bf5/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test6-2.i[56247,56260] [2021-11-23 02:08:30,890 WARN L230 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_4b49bf88-4060-4c2b-904c-df318ad22bf5/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test6-2.i[56368,56381] [2021-11-23 02:08:30,906 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 02:08:30,914 INFO L203 MainTranslator]: Completed pre-run [2021-11-23 02:08:30,968 WARN L230 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_4b49bf88-4060-4c2b-904c-df318ad22bf5/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test6-2.i[44118,44131] [2021-11-23 02:08:30,974 WARN L230 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_4b49bf88-4060-4c2b-904c-df318ad22bf5/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test6-2.i[44660,44673] [2021-11-23 02:08:31,055 WARN L230 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_4b49bf88-4060-4c2b-904c-df318ad22bf5/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test6-2.i[56247,56260] [2021-11-23 02:08:31,056 WARN L230 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_4b49bf88-4060-4c2b-904c-df318ad22bf5/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test6-2.i[56368,56381] [2021-11-23 02:08:31,068 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 02:08:31,190 INFO L208 MainTranslator]: Completed translation [2021-11-23 02:08:31,190 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:08:31 WrapperNode [2021-11-23 02:08:31,191 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-23 02:08:31,193 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-23 02:08:31,194 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-23 02:08:31,194 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-23 02:08:31,203 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:08:31" (1/1) ... [2021-11-23 02:08:31,298 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:08:31" (1/1) ... [2021-11-23 02:08:31,423 INFO L137 Inliner]: procedures = 285, calls = 347, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 1204 [2021-11-23 02:08:31,423 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-23 02:08:31,425 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-23 02:08:31,425 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-23 02:08:31,426 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-23 02:08:31,437 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:08:31" (1/1) ... [2021-11-23 02:08:31,437 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:08:31" (1/1) ... [2021-11-23 02:08:31,473 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:08:31" (1/1) ... [2021-11-23 02:08:31,474 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:08:31" (1/1) ... [2021-11-23 02:08:31,588 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:08:31" (1/1) ... [2021-11-23 02:08:31,618 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:08:31" (1/1) ... [2021-11-23 02:08:31,635 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:08:31" (1/1) ... [2021-11-23 02:08:31,656 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-23 02:08:31,659 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-23 02:08:31,659 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-23 02:08:31,659 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-23 02:08:31,661 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:08:31" (1/1) ... [2021-11-23 02:08:31,670 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 02:08:31,684 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b49bf88-4060-4c2b-904c-df318ad22bf5/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 02:08:31,703 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b49bf88-4060-4c2b-904c-df318ad22bf5/bin/utaipan-EQgc7hIp5V/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-23 02:08:31,727 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b49bf88-4060-4c2b-904c-df318ad22bf5/bin/utaipan-EQgc7hIp5V/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-23 02:08:31,770 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-11-23 02:08:31,770 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-23 02:08:31,771 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-23 02:08:31,771 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2021-11-23 02:08:31,771 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-23 02:08:31,771 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-23 02:08:31,771 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-23 02:08:31,771 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-23 02:08:31,771 INFO L130 BoogieDeclarations]: Found specification of procedure alt_bzero [2021-11-23 02:08:31,771 INFO L138 BoogieDeclarations]: Found implementation of procedure alt_bzero [2021-11-23 02:08:31,772 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-11-23 02:08:31,772 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-11-23 02:08:31,772 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-23 02:08:31,772 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-23 02:08:31,772 INFO L130 BoogieDeclarations]: Found specification of procedure alt_malloc [2021-11-23 02:08:31,772 INFO L138 BoogieDeclarations]: Found implementation of procedure alt_malloc [2021-11-23 02:08:31,773 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-23 02:08:31,773 INFO L130 BoogieDeclarations]: Found specification of procedure alt_free [2021-11-23 02:08:31,773 INFO L138 BoogieDeclarations]: Found implementation of procedure alt_free [2021-11-23 02:08:31,773 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-23 02:08:31,773 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-23 02:08:32,251 INFO L236 CfgBuilder]: Building ICFG [2021-11-23 02:08:32,254 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-23 02:08:39,158 INFO L277 CfgBuilder]: Performing block encoding [2021-11-23 02:08:39,207 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-23 02:08:39,208 INFO L301 CfgBuilder]: Removed 72 assume(true) statements. [2021-11-23 02:08:39,217 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:08:39 BoogieIcfgContainer [2021-11-23 02:08:39,218 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-23 02:08:39,222 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-23 02:08:39,222 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-23 02:08:39,226 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-23 02:08:39,227 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 02:08:29" (1/3) ... [2021-11-23 02:08:39,228 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e256e53 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 02:08:39, skipping insertion in model container [2021-11-23 02:08:39,228 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:08:31" (2/3) ... [2021-11-23 02:08:39,231 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e256e53 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 02:08:39, skipping insertion in model container [2021-11-23 02:08:39,232 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:08:39" (3/3) ... [2021-11-23 02:08:39,236 INFO L111 eAbstractionObserver]: Analyzing ICFG uthash_SAX_test6-2.i [2021-11-23 02:08:39,244 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-23 02:08:39,244 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 634 error locations. [2021-11-23 02:08:39,305 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-23 02:08:39,315 INFO L339 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, mLoopAccelerationTechnique=FAST_UPR [2021-11-23 02:08:39,316 INFO L340 AbstractCegarLoop]: Starting to check reachability of 634 error locations. [2021-11-23 02:08:39,369 INFO L276 IsEmpty]: Start isEmpty. Operand has 1280 states, 626 states have (on average 2.2444089456869007) internal successors, (1405), 1260 states have internal predecessors, (1405), 16 states have call successors, (16), 4 states have call predecessors, (16), 4 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2021-11-23 02:08:39,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-11-23 02:08:39,378 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:08:39,379 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-11-23 02:08:39,379 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATION === [alt_mallocErr0REQUIRES_VIOLATION, alt_mallocErr1REQUIRES_VIOLATION, alt_freeErr0REQUIRES_VIOLATION, alt_freeErr1REQUIRES_VIOLATION (and 630 more)] === [2021-11-23 02:08:39,386 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:08:39,387 INFO L85 PathProgramCache]: Analyzing trace with hash 77521, now seen corresponding path program 1 times [2021-11-23 02:08:39,402 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 02:08:39,403 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [255205482] [2021-11-23 02:08:39,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:08:39,405 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 02:08:39,405 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b49bf88-4060-4c2b-904c-df318ad22bf5/bin/utaipan-EQgc7hIp5V/mathsat [2021-11-23 02:08:39,409 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b49bf88-4060-4c2b-904c-df318ad22bf5/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 02:08:39,429 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b49bf88-4060-4c2b-904c-df318ad22bf5/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-23 02:08:39,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:08:39,725 INFO L263 TraceCheckSpWp]: Trace formula consists of 31 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-23 02:08:39,734 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 02:08:39,852 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-11-23 02:08:39,878 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 02:08:39,879 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 02:08:39,913 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 02:08:39,914 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 02:08:39,925 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [255205482] [2021-11-23 02:08:39,926 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [255205482] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 02:08:39,927 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:08:39,927 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-23 02:08:39,929 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [259798728] [2021-11-23 02:08:39,930 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 02:08:39,936 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 02:08:39,936 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 02:08:39,971 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 02:08:39,972 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 02:08:39,994 INFO L87 Difference]: Start difference. First operand has 1280 states, 626 states have (on average 2.2444089456869007) internal successors, (1405), 1260 states have internal predecessors, (1405), 16 states have call successors, (16), 4 states have call predecessors, (16), 4 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) 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) [2021-11-23 02:08:43,824 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:08:43,825 INFO L93 Difference]: Finished difference Result 1537 states and 1627 transitions. [2021-11-23 02:08:43,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 02:08:43,828 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 [2021-11-23 02:08:43,829 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:08:43,861 INFO L225 Difference]: With dead ends: 1537 [2021-11-23 02:08:43,862 INFO L226 Difference]: Without dead ends: 1535 [2021-11-23 02:08:43,864 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 02:08:43,869 INFO L933 BasicCegarLoop]: 911 mSDtfsCounter, 906 mSDsluCounter, 347 mSDsCounter, 0 mSdLazyCounter, 790 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 909 SdHoareTripleChecker+Valid, 1258 SdHoareTripleChecker+Invalid, 803 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 790 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2021-11-23 02:08:43,871 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [909 Valid, 1258 Invalid, 803 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 790 Invalid, 0 Unknown, 0 Unchecked, 3.7s Time] [2021-11-23 02:08:43,900 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1535 states. [2021-11-23 02:08:44,014 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1535 to 1300. [2021-11-23 02:08:44,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1300 states, 660 states have (on average 2.106060606060606) internal successors, (1390), 1281 states have internal predecessors, (1390), 15 states have call successors, (15), 4 states have call predecessors, (15), 4 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2021-11-23 02:08:44,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1300 states to 1300 states and 1420 transitions. [2021-11-23 02:08:44,032 INFO L78 Accepts]: Start accepts. Automaton has 1300 states and 1420 transitions. Word has length 3 [2021-11-23 02:08:44,032 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:08:44,032 INFO L470 AbstractCegarLoop]: Abstraction has 1300 states and 1420 transitions. [2021-11-23 02:08:44,033 INFO L471 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) [2021-11-23 02:08:44,033 INFO L276 IsEmpty]: Start isEmpty. Operand 1300 states and 1420 transitions. [2021-11-23 02:08:44,034 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-11-23 02:08:44,034 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:08:44,034 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-11-23 02:08:44,053 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b49bf88-4060-4c2b-904c-df318ad22bf5/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-23 02:08:44,245 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b49bf88-4060-4c2b-904c-df318ad22bf5/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 [2021-11-23 02:08:44,245 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATION === [alt_mallocErr0REQUIRES_VIOLATION, alt_mallocErr1REQUIRES_VIOLATION, alt_freeErr0REQUIRES_VIOLATION, alt_freeErr1REQUIRES_VIOLATION (and 630 more)] === [2021-11-23 02:08:44,246 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:08:44,246 INFO L85 PathProgramCache]: Analyzing trace with hash 77522, now seen corresponding path program 1 times [2021-11-23 02:08:44,247 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 02:08:44,247 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [560411046] [2021-11-23 02:08:44,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:08:44,247 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 02:08:44,248 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b49bf88-4060-4c2b-904c-df318ad22bf5/bin/utaipan-EQgc7hIp5V/mathsat [2021-11-23 02:08:44,249 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b49bf88-4060-4c2b-904c-df318ad22bf5/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 02:08:44,255 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b49bf88-4060-4c2b-904c-df318ad22bf5/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-23 02:08:44,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:08:44,451 INFO L263 TraceCheckSpWp]: Trace formula consists of 31 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-23 02:08:44,456 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 02:08:44,494 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-11-23 02:08:44,510 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 02:08:44,510 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 02:08:44,583 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 02:08:44,586 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 02:08:44,587 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [560411046] [2021-11-23 02:08:44,587 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [560411046] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 02:08:44,588 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:08:44,588 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2021-11-23 02:08:44,589 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1420436521] [2021-11-23 02:08:44,589 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 02:08:44,590 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 02:08:44,591 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 02:08:44,593 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 02:08:44,593 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-23 02:08:44,594 INFO L87 Difference]: Start difference. First operand 1300 states and 1420 transitions. Second operand has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 02:08:51,134 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:08:51,135 INFO L93 Difference]: Finished difference Result 1927 states and 2053 transitions. [2021-11-23 02:08:51,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-23 02:08:51,136 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2021-11-23 02:08:51,136 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:08:51,149 INFO L225 Difference]: With dead ends: 1927 [2021-11-23 02:08:51,150 INFO L226 Difference]: Without dead ends: 1927 [2021-11-23 02:08:51,150 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-23 02:08:51,153 INFO L933 BasicCegarLoop]: 915 mSDtfsCounter, 2160 mSDsluCounter, 738 mSDsCounter, 0 mSdLazyCounter, 1091 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2174 SdHoareTripleChecker+Valid, 1653 SdHoareTripleChecker+Invalid, 1116 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 1091 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.4s IncrementalHoareTripleChecker+Time [2021-11-23 02:08:51,154 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2174 Valid, 1653 Invalid, 1116 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 1091 Invalid, 0 Unknown, 0 Unchecked, 6.4s Time] [2021-11-23 02:08:51,160 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1927 states. [2021-11-23 02:08:51,201 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1927 to 1296. [2021-11-23 02:08:51,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1296 states, 665 states have (on average 2.0842105263157893) internal successors, (1386), 1277 states have internal predecessors, (1386), 15 states have call successors, (15), 4 states have call predecessors, (15), 4 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2021-11-23 02:08:51,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1296 states to 1296 states and 1416 transitions. [2021-11-23 02:08:51,215 INFO L78 Accepts]: Start accepts. Automaton has 1296 states and 1416 transitions. Word has length 3 [2021-11-23 02:08:51,216 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:08:51,216 INFO L470 AbstractCegarLoop]: Abstraction has 1296 states and 1416 transitions. [2021-11-23 02:08:51,216 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 02:08:51,217 INFO L276 IsEmpty]: Start isEmpty. Operand 1296 states and 1416 transitions. [2021-11-23 02:08:51,217 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-11-23 02:08:51,217 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:08:51,218 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:08:51,235 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b49bf88-4060-4c2b-904c-df318ad22bf5/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (3)] Ended with exit code 0 [2021-11-23 02:08:51,435 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b49bf88-4060-4c2b-904c-df318ad22bf5/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 [2021-11-23 02:08:51,436 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATION === [alt_mallocErr0REQUIRES_VIOLATION, alt_mallocErr1REQUIRES_VIOLATION, alt_freeErr0REQUIRES_VIOLATION, alt_freeErr1REQUIRES_VIOLATION (and 630 more)] === [2021-11-23 02:08:51,436 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:08:51,436 INFO L85 PathProgramCache]: Analyzing trace with hash -102759776, now seen corresponding path program 1 times [2021-11-23 02:08:51,437 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 02:08:51,438 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [31323220] [2021-11-23 02:08:51,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:08:51,438 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 02:08:51,438 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b49bf88-4060-4c2b-904c-df318ad22bf5/bin/utaipan-EQgc7hIp5V/mathsat [2021-11-23 02:08:51,440 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b49bf88-4060-4c2b-904c-df318ad22bf5/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 02:08:51,443 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b49bf88-4060-4c2b-904c-df318ad22bf5/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-23 02:08:51,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:08:51,615 INFO L263 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-23 02:08:51,617 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 02:08:51,639 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-11-23 02:08:51,677 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 02:08:51,678 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 02:08:51,739 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 02:08:51,740 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 02:08:51,740 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [31323220] [2021-11-23 02:08:51,740 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [31323220] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 02:08:51,740 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:08:51,740 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-23 02:08:51,741 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [154283776] [2021-11-23 02:08:51,741 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 02:08:51,741 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 02:08:51,741 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 02:08:51,742 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 02:08:51,742 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-23 02:08:51,742 INFO L87 Difference]: Start difference. First operand 1296 states and 1416 transitions. Second operand has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 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) [2021-11-23 02:08:57,402 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:08:57,402 INFO L93 Difference]: Finished difference Result 2252 states and 2407 transitions. [2021-11-23 02:08:57,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-23 02:08:57,405 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 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 9 [2021-11-23 02:08:57,405 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:08:57,420 INFO L225 Difference]: With dead ends: 2252 [2021-11-23 02:08:57,420 INFO L226 Difference]: Without dead ends: 2252 [2021-11-23 02:08:57,421 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 14 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-23 02:08:57,423 INFO L933 BasicCegarLoop]: 1308 mSDtfsCounter, 2320 mSDsluCounter, 1246 mSDsCounter, 0 mSdLazyCounter, 1784 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2326 SdHoareTripleChecker+Valid, 2554 SdHoareTripleChecker+Invalid, 1841 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 1784 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.5s IncrementalHoareTripleChecker+Time [2021-11-23 02:08:57,424 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2326 Valid, 2554 Invalid, 1841 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 1784 Invalid, 0 Unknown, 0 Unchecked, 5.5s Time] [2021-11-23 02:08:57,430 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2252 states. [2021-11-23 02:08:57,486 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2252 to 1251. [2021-11-23 02:08:57,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1251 states, 665 states have (on average 2.01203007518797) internal successors, (1338), 1232 states have internal predecessors, (1338), 15 states have call successors, (15), 4 states have call predecessors, (15), 4 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2021-11-23 02:08:57,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1251 states to 1251 states and 1368 transitions. [2021-11-23 02:08:57,497 INFO L78 Accepts]: Start accepts. Automaton has 1251 states and 1368 transitions. Word has length 9 [2021-11-23 02:08:57,498 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:08:57,498 INFO L470 AbstractCegarLoop]: Abstraction has 1251 states and 1368 transitions. [2021-11-23 02:08:57,499 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 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) [2021-11-23 02:08:57,499 INFO L276 IsEmpty]: Start isEmpty. Operand 1251 states and 1368 transitions. [2021-11-23 02:08:57,500 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-11-23 02:08:57,500 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:08:57,500 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:08:57,518 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b49bf88-4060-4c2b-904c-df318ad22bf5/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-23 02:08:57,713 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b49bf88-4060-4c2b-904c-df318ad22bf5/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 [2021-11-23 02:08:57,713 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATION === [alt_mallocErr0REQUIRES_VIOLATION, alt_mallocErr1REQUIRES_VIOLATION, alt_freeErr0REQUIRES_VIOLATION, alt_freeErr1REQUIRES_VIOLATION (and 630 more)] === [2021-11-23 02:08:57,714 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:08:57,714 INFO L85 PathProgramCache]: Analyzing trace with hash -102759775, now seen corresponding path program 1 times [2021-11-23 02:08:57,715 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 02:08:57,715 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1173557275] [2021-11-23 02:08:57,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:08:57,716 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 02:08:57,716 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b49bf88-4060-4c2b-904c-df318ad22bf5/bin/utaipan-EQgc7hIp5V/mathsat [2021-11-23 02:08:57,717 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b49bf88-4060-4c2b-904c-df318ad22bf5/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 02:08:57,718 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b49bf88-4060-4c2b-904c-df318ad22bf5/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-23 02:08:57,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:08:57,864 INFO L263 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-23 02:08:57,867 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 02:08:57,899 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-11-23 02:08:57,983 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 02:08:57,983 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 02:08:58,177 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 02:08:58,178 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 02:08:58,178 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1173557275] [2021-11-23 02:08:58,181 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1173557275] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 02:08:58,181 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:08:58,185 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-11-23 02:08:58,185 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [688655942] [2021-11-23 02:08:58,185 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 02:08:58,186 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-23 02:08:58,186 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 02:08:58,187 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-23 02:08:58,187 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-23 02:08:58,187 INFO L87 Difference]: Start difference. First operand 1251 states and 1368 transitions. Second operand has 6 states, 5 states have (on average 2.8) internal successors, (14), 6 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) [2021-11-23 02:09:09,902 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:09:09,903 INFO L93 Difference]: Finished difference Result 1880 states and 2007 transitions. [2021-11-23 02:09:09,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-23 02:09:09,905 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.8) internal successors, (14), 6 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 9 [2021-11-23 02:09:09,906 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:09:09,918 INFO L225 Difference]: With dead ends: 1880 [2021-11-23 02:09:09,919 INFO L226 Difference]: Without dead ends: 1880 [2021-11-23 02:09:09,919 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-23 02:09:09,921 INFO L933 BasicCegarLoop]: 1504 mSDtfsCounter, 2462 mSDsluCounter, 1848 mSDsCounter, 0 mSdLazyCounter, 2289 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2467 SdHoareTripleChecker+Valid, 3352 SdHoareTripleChecker+Invalid, 2315 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 2289 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.5s IncrementalHoareTripleChecker+Time [2021-11-23 02:09:09,922 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2467 Valid, 3352 Invalid, 2315 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 2289 Invalid, 0 Unknown, 0 Unchecked, 11.5s Time] [2021-11-23 02:09:09,927 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1880 states. [2021-11-23 02:09:09,977 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1880 to 1241. [2021-11-23 02:09:09,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1241 states, 665 states have (on average 1.9924812030075187) internal successors, (1325), 1222 states have internal predecessors, (1325), 15 states have call successors, (15), 4 states have call predecessors, (15), 4 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2021-11-23 02:09:09,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1241 states to 1241 states and 1355 transitions. [2021-11-23 02:09:09,986 INFO L78 Accepts]: Start accepts. Automaton has 1241 states and 1355 transitions. Word has length 9 [2021-11-23 02:09:09,987 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:09:09,988 INFO L470 AbstractCegarLoop]: Abstraction has 1241 states and 1355 transitions. [2021-11-23 02:09:09,988 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.8) internal successors, (14), 6 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) [2021-11-23 02:09:09,988 INFO L276 IsEmpty]: Start isEmpty. Operand 1241 states and 1355 transitions. [2021-11-23 02:09:09,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-11-23 02:09:09,989 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:09:09,989 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:09:10,004 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b49bf88-4060-4c2b-904c-df318ad22bf5/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-23 02:09:10,203 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b49bf88-4060-4c2b-904c-df318ad22bf5/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 [2021-11-23 02:09:10,204 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr516ASSERT_VIOLATIONMEMORY_LEAK === [alt_mallocErr0REQUIRES_VIOLATION, alt_mallocErr1REQUIRES_VIOLATION, alt_freeErr0REQUIRES_VIOLATION, alt_freeErr1REQUIRES_VIOLATION (and 630 more)] === [2021-11-23 02:09:10,205 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:09:10,205 INFO L85 PathProgramCache]: Analyzing trace with hash -856298529, now seen corresponding path program 1 times [2021-11-23 02:09:10,205 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 02:09:10,206 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1243776223] [2021-11-23 02:09:10,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:09:10,206 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 02:09:10,206 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b49bf88-4060-4c2b-904c-df318ad22bf5/bin/utaipan-EQgc7hIp5V/mathsat [2021-11-23 02:09:10,208 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b49bf88-4060-4c2b-904c-df318ad22bf5/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 02:09:10,210 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b49bf88-4060-4c2b-904c-df318ad22bf5/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-23 02:09:10,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:09:10,360 INFO L263 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-23 02:09:10,362 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 02:09:10,484 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 02:09:10,484 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 02:09:10,590 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 02:09:10,591 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 02:09:10,591 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1243776223] [2021-11-23 02:09:10,591 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1243776223] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 02:09:10,591 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:09:10,592 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-23 02:09:10,592 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [779675396] [2021-11-23 02:09:10,592 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 02:09:10,592 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 02:09:10,593 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 02:09:10,593 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 02:09:10,593 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-23 02:09:10,594 INFO L87 Difference]: Start difference. First operand 1241 states and 1355 transitions. Second operand has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 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) [2021-11-23 02:09:11,833 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:09:11,833 INFO L93 Difference]: Finished difference Result 1885 states and 2048 transitions. [2021-11-23 02:09:11,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-23 02:09:11,834 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 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 [2021-11-23 02:09:11,835 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:09:11,844 INFO L225 Difference]: With dead ends: 1885 [2021-11-23 02:09:11,845 INFO L226 Difference]: Without dead ends: 1885 [2021-11-23 02:09:11,845 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-23 02:09:11,847 INFO L933 BasicCegarLoop]: 1438 mSDtfsCounter, 745 mSDsluCounter, 2394 mSDsCounter, 0 mSdLazyCounter, 379 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 756 SdHoareTripleChecker+Valid, 3832 SdHoareTripleChecker+Invalid, 400 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 379 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2021-11-23 02:09:11,847 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [756 Valid, 3832 Invalid, 400 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 379 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2021-11-23 02:09:11,853 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1885 states. [2021-11-23 02:09:11,890 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1885 to 1487. [2021-11-23 02:09:11,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1487 states, 908 states have (on average 1.9625550660792952) internal successors, (1782), 1465 states have internal predecessors, (1782), 18 states have call successors, (18), 4 states have call predecessors, (18), 4 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2021-11-23 02:09:11,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1487 states to 1487 states and 1818 transitions. [2021-11-23 02:09:11,902 INFO L78 Accepts]: Start accepts. Automaton has 1487 states and 1818 transitions. Word has length 11 [2021-11-23 02:09:11,902 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:09:11,902 INFO L470 AbstractCegarLoop]: Abstraction has 1487 states and 1818 transitions. [2021-11-23 02:09:11,902 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 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) [2021-11-23 02:09:11,903 INFO L276 IsEmpty]: Start isEmpty. Operand 1487 states and 1818 transitions. [2021-11-23 02:09:11,903 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-11-23 02:09:11,904 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:09:11,904 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:09:11,922 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b49bf88-4060-4c2b-904c-df318ad22bf5/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-23 02:09:12,118 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b49bf88-4060-4c2b-904c-df318ad22bf5/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 [2021-11-23 02:09:12,118 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK === [alt_mallocErr0REQUIRES_VIOLATION, alt_mallocErr1REQUIRES_VIOLATION, alt_freeErr0REQUIRES_VIOLATION, alt_freeErr1REQUIRES_VIOLATION (and 630 more)] === [2021-11-23 02:09:12,119 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:09:12,119 INFO L85 PathProgramCache]: Analyzing trace with hash 2126591358, now seen corresponding path program 1 times [2021-11-23 02:09:12,120 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 02:09:12,120 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1836031614] [2021-11-23 02:09:12,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:09:12,120 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 02:09:12,121 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b49bf88-4060-4c2b-904c-df318ad22bf5/bin/utaipan-EQgc7hIp5V/mathsat [2021-11-23 02:09:12,123 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b49bf88-4060-4c2b-904c-df318ad22bf5/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 02:09:12,165 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b49bf88-4060-4c2b-904c-df318ad22bf5/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-23 02:09:12,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:09:12,371 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-23 02:09:12,374 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 02:09:12,387 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 02:09:12,387 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 02:09:12,388 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 02:09:12,474 INFO L354 Elim1Store]: treesize reduction 166, result has 13.5 percent of original size [2021-11-23 02:09:12,474 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 3 case distinctions, treesize of input 30 treesize of output 36 [2021-11-23 02:09:12,555 INFO L354 Elim1Store]: treesize reduction 66, result has 1.5 percent of original size [2021-11-23 02:09:12,555 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 67 treesize of output 23 [2021-11-23 02:09:12,596 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 02:09:12,596 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 02:09:12,680 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 02:09:12,680 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 02:09:12,680 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1836031614] [2021-11-23 02:09:12,680 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1836031614] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 02:09:12,681 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:09:12,681 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-23 02:09:12,681 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1625593196] [2021-11-23 02:09:12,681 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 02:09:12,682 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-23 02:09:12,682 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 02:09:12,682 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-23 02:09:12,683 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-23 02:09:12,683 INFO L87 Difference]: Start difference. First operand 1487 states and 1818 transitions. Second operand has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 6 states have internal predecessors, (16), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 02:09:14,954 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:09:14,954 INFO L93 Difference]: Finished difference Result 1989 states and 2394 transitions. [2021-11-23 02:09:14,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-23 02:09:14,955 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 6 states have internal predecessors, (16), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2021-11-23 02:09:14,955 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:09:14,965 INFO L225 Difference]: With dead ends: 1989 [2021-11-23 02:09:14,966 INFO L226 Difference]: Without dead ends: 1989 [2021-11-23 02:09:14,966 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-23 02:09:14,967 INFO L933 BasicCegarLoop]: 1252 mSDtfsCounter, 996 mSDsluCounter, 2340 mSDsCounter, 0 mSdLazyCounter, 306 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1003 SdHoareTripleChecker+Valid, 3592 SdHoareTripleChecker+Invalid, 317 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 306 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2021-11-23 02:09:14,968 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1003 Valid, 3592 Invalid, 317 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 306 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2021-11-23 02:09:14,973 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1989 states. [2021-11-23 02:09:15,006 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1989 to 1486. [2021-11-23 02:09:15,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1486 states, 907 states have (on average 1.9625137816979052) internal successors, (1780), 1464 states have internal predecessors, (1780), 18 states have call successors, (18), 4 states have call predecessors, (18), 4 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2021-11-23 02:09:15,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1486 states to 1486 states and 1816 transitions. [2021-11-23 02:09:15,017 INFO L78 Accepts]: Start accepts. Automaton has 1486 states and 1816 transitions. Word has length 14 [2021-11-23 02:09:15,017 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:09:15,018 INFO L470 AbstractCegarLoop]: Abstraction has 1486 states and 1816 transitions. [2021-11-23 02:09:15,018 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 6 states have internal predecessors, (16), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 02:09:15,020 INFO L276 IsEmpty]: Start isEmpty. Operand 1486 states and 1816 transitions. [2021-11-23 02:09:15,021 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-11-23 02:09:15,021 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:09:15,022 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:09:15,041 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b49bf88-4060-4c2b-904c-df318ad22bf5/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-23 02:09:15,231 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b49bf88-4060-4c2b-904c-df318ad22bf5/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 [2021-11-23 02:09:15,232 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr15REQUIRES_VIOLATION === [alt_mallocErr0REQUIRES_VIOLATION, alt_mallocErr1REQUIRES_VIOLATION, alt_freeErr0REQUIRES_VIOLATION, alt_freeErr1REQUIRES_VIOLATION (and 630 more)] === [2021-11-23 02:09:15,232 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:09:15,232 INFO L85 PathProgramCache]: Analyzing trace with hash 769788685, now seen corresponding path program 1 times [2021-11-23 02:09:15,233 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 02:09:15,233 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [350980495] [2021-11-23 02:09:15,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:09:15,233 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 02:09:15,234 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b49bf88-4060-4c2b-904c-df318ad22bf5/bin/utaipan-EQgc7hIp5V/mathsat [2021-11-23 02:09:15,234 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b49bf88-4060-4c2b-904c-df318ad22bf5/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 02:09:15,236 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b49bf88-4060-4c2b-904c-df318ad22bf5/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-23 02:09:15,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:09:15,449 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-23 02:09:15,451 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 02:09:15,515 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 02:09:15,515 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 02:09:15,560 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 02:09:15,561 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 02:09:15,561 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [350980495] [2021-11-23 02:09:15,561 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [350980495] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 02:09:15,561 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:09:15,562 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-23 02:09:15,562 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1040523464] [2021-11-23 02:09:15,562 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 02:09:15,563 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 02:09:15,563 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 02:09:15,563 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 02:09:15,564 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-23 02:09:15,564 INFO L87 Difference]: Start difference. First operand 1486 states and 1816 transitions. Second operand has 4 states, 4 states have (on average 5.25) internal successors, (21), 4 states have internal predecessors, (21), 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) [2021-11-23 02:09:15,616 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:09:15,616 INFO L93 Difference]: Finished difference Result 1426 states and 1730 transitions. [2021-11-23 02:09:15,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 02:09:15,617 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.25) internal successors, (21), 4 states have internal predecessors, (21), 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 19 [2021-11-23 02:09:15,617 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:09:15,627 INFO L225 Difference]: With dead ends: 1426 [2021-11-23 02:09:15,627 INFO L226 Difference]: Without dead ends: 1426 [2021-11-23 02:09:15,627 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-23 02:09:15,634 INFO L933 BasicCegarLoop]: 1231 mSDtfsCounter, 1157 mSDsluCounter, 138 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1171 SdHoareTripleChecker+Valid, 1369 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 02:09:15,634 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1171 Valid, 1369 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 02:09:15,640 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1426 states. [2021-11-23 02:09:15,665 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1426 to 1426. [2021-11-23 02:09:15,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1426 states, 871 states have (on average 1.9448909299655568) internal successors, (1694), 1404 states have internal predecessors, (1694), 18 states have call successors, (18), 4 states have call predecessors, (18), 4 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2021-11-23 02:09:15,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1426 states to 1426 states and 1730 transitions. [2021-11-23 02:09:15,679 INFO L78 Accepts]: Start accepts. Automaton has 1426 states and 1730 transitions. Word has length 19 [2021-11-23 02:09:15,680 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:09:15,680 INFO L470 AbstractCegarLoop]: Abstraction has 1426 states and 1730 transitions. [2021-11-23 02:09:15,680 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.25) internal successors, (21), 4 states have internal predecessors, (21), 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) [2021-11-23 02:09:15,680 INFO L276 IsEmpty]: Start isEmpty. Operand 1426 states and 1730 transitions. [2021-11-23 02:09:15,682 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-11-23 02:09:15,682 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:09:15,683 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:09:15,702 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b49bf88-4060-4c2b-904c-df318ad22bf5/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-11-23 02:09:15,897 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b49bf88-4060-4c2b-904c-df318ad22bf5/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 [2021-11-23 02:09:15,898 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr38REQUIRES_VIOLATION === [alt_mallocErr0REQUIRES_VIOLATION, alt_mallocErr1REQUIRES_VIOLATION, alt_freeErr0REQUIRES_VIOLATION, alt_freeErr1REQUIRES_VIOLATION (and 630 more)] === [2021-11-23 02:09:15,898 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:09:15,898 INFO L85 PathProgramCache]: Analyzing trace with hash 1032548102, now seen corresponding path program 1 times [2021-11-23 02:09:15,899 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 02:09:15,899 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1684822846] [2021-11-23 02:09:15,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:09:15,899 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 02:09:15,900 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b49bf88-4060-4c2b-904c-df318ad22bf5/bin/utaipan-EQgc7hIp5V/mathsat [2021-11-23 02:09:15,902 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b49bf88-4060-4c2b-904c-df318ad22bf5/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 02:09:15,946 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b49bf88-4060-4c2b-904c-df318ad22bf5/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-23 02:09:16,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:09:16,141 INFO L263 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-23 02:09:16,144 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 02:09:16,212 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 02:09:16,213 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 02:09:16,264 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 02:09:16,265 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 02:09:16,265 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1684822846] [2021-11-23 02:09:16,265 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1684822846] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 02:09:16,265 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:09:16,266 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 5 [2021-11-23 02:09:16,266 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [482302650] [2021-11-23 02:09:16,266 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 02:09:16,267 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-23 02:09:16,267 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 02:09:16,267 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-23 02:09:16,268 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-23 02:09:16,268 INFO L87 Difference]: Start difference. First operand 1426 states and 1730 transitions. Second operand has 5 states, 5 states have (on average 4.8) internal successors, (24), 5 states have internal predecessors, (24), 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) [2021-11-23 02:09:16,369 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:09:16,370 INFO L93 Difference]: Finished difference Result 1398 states and 1674 transitions. [2021-11-23 02:09:16,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-23 02:09:16,370 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.8) internal successors, (24), 5 states have internal predecessors, (24), 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 21 [2021-11-23 02:09:16,371 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:09:16,380 INFO L225 Difference]: With dead ends: 1398 [2021-11-23 02:09:16,380 INFO L226 Difference]: Without dead ends: 1398 [2021-11-23 02:09:16,380 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-23 02:09:16,381 INFO L933 BasicCegarLoop]: 1186 mSDtfsCounter, 1128 mSDsluCounter, 1317 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1142 SdHoareTripleChecker+Valid, 2503 SdHoareTripleChecker+Invalid, 67 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 02:09:16,382 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1142 Valid, 2503 Invalid, 67 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 02:09:16,385 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1398 states. [2021-11-23 02:09:16,409 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1398 to 1396. [2021-11-23 02:09:16,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1396 states, 855 states have (on average 1.9134502923976608) internal successors, (1636), 1374 states have internal predecessors, (1636), 18 states have call successors, (18), 4 states have call predecessors, (18), 4 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2021-11-23 02:09:16,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1396 states to 1396 states and 1672 transitions. [2021-11-23 02:09:16,419 INFO L78 Accepts]: Start accepts. Automaton has 1396 states and 1672 transitions. Word has length 21 [2021-11-23 02:09:16,419 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:09:16,420 INFO L470 AbstractCegarLoop]: Abstraction has 1396 states and 1672 transitions. [2021-11-23 02:09:16,420 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.8) internal successors, (24), 5 states have internal predecessors, (24), 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) [2021-11-23 02:09:16,420 INFO L276 IsEmpty]: Start isEmpty. Operand 1396 states and 1672 transitions. [2021-11-23 02:09:16,421 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-11-23 02:09:16,421 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:09:16,421 INFO L514 BasicCegarLoop]: 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] [2021-11-23 02:09:16,445 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b49bf88-4060-4c2b-904c-df318ad22bf5/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-11-23 02:09:16,636 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b49bf88-4060-4c2b-904c-df318ad22bf5/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 [2021-11-23 02:09:16,636 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr52REQUIRES_VIOLATION === [alt_mallocErr0REQUIRES_VIOLATION, alt_mallocErr1REQUIRES_VIOLATION, alt_freeErr0REQUIRES_VIOLATION, alt_freeErr1REQUIRES_VIOLATION (and 630 more)] === [2021-11-23 02:09:16,637 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:09:16,637 INFO L85 PathProgramCache]: Analyzing trace with hash 1673308372, now seen corresponding path program 1 times [2021-11-23 02:09:16,638 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 02:09:16,638 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2001003054] [2021-11-23 02:09:16,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:09:16,638 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 02:09:16,639 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b49bf88-4060-4c2b-904c-df318ad22bf5/bin/utaipan-EQgc7hIp5V/mathsat [2021-11-23 02:09:16,640 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b49bf88-4060-4c2b-904c-df318ad22bf5/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 02:09:16,683 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b49bf88-4060-4c2b-904c-df318ad22bf5/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-11-23 02:09:16,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:09:16,847 INFO L263 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-23 02:09:16,851 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 02:09:16,878 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-11-23 02:09:17,040 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 02:09:17,040 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 02:09:17,199 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 02:09:17,199 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 02:09:17,199 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2001003054] [2021-11-23 02:09:17,199 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2001003054] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 02:09:17,199 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:09:17,200 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-23 02:09:17,200 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [700067057] [2021-11-23 02:09:17,200 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 02:09:17,200 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-23 02:09:17,201 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 02:09:17,201 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-23 02:09:17,201 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-23 02:09:17,202 INFO L87 Difference]: Start difference. First operand 1396 states and 1672 transitions. Second operand has 5 states, 4 states have (on average 8.75) internal successors, (35), 5 states have internal predecessors, (35), 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) [2021-11-23 02:09:22,695 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:09:22,695 INFO L93 Difference]: Finished difference Result 2553 states and 3058 transitions. [2021-11-23 02:09:22,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-23 02:09:22,698 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 8.75) internal successors, (35), 5 states have internal predecessors, (35), 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 35 [2021-11-23 02:09:22,698 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:09:22,710 INFO L225 Difference]: With dead ends: 2553 [2021-11-23 02:09:22,711 INFO L226 Difference]: Without dead ends: 2553 [2021-11-23 02:09:22,711 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 65 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-23 02:09:22,712 INFO L933 BasicCegarLoop]: 1134 mSDtfsCounter, 2401 mSDsluCounter, 1568 mSDsCounter, 0 mSdLazyCounter, 2363 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2404 SdHoareTripleChecker+Valid, 2702 SdHoareTripleChecker+Invalid, 2382 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 2363 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.4s IncrementalHoareTripleChecker+Time [2021-11-23 02:09:22,712 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2404 Valid, 2702 Invalid, 2382 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 2363 Invalid, 0 Unknown, 0 Unchecked, 5.4s Time] [2021-11-23 02:09:22,717 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2553 states. [2021-11-23 02:09:22,747 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2553 to 1392. [2021-11-23 02:09:22,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1392 states, 855 states have (on average 1.904093567251462) internal successors, (1628), 1370 states have internal predecessors, (1628), 18 states have call successors, (18), 4 states have call predecessors, (18), 4 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2021-11-23 02:09:22,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1392 states to 1392 states and 1664 transitions. [2021-11-23 02:09:22,757 INFO L78 Accepts]: Start accepts. Automaton has 1392 states and 1664 transitions. Word has length 35 [2021-11-23 02:09:22,757 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:09:22,757 INFO L470 AbstractCegarLoop]: Abstraction has 1392 states and 1664 transitions. [2021-11-23 02:09:22,758 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 8.75) internal successors, (35), 5 states have internal predecessors, (35), 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) [2021-11-23 02:09:22,758 INFO L276 IsEmpty]: Start isEmpty. Operand 1392 states and 1664 transitions. [2021-11-23 02:09:22,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-11-23 02:09:22,759 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:09:22,759 INFO L514 BasicCegarLoop]: 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] [2021-11-23 02:09:22,788 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b49bf88-4060-4c2b-904c-df318ad22bf5/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-11-23 02:09:22,973 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b49bf88-4060-4c2b-904c-df318ad22bf5/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 [2021-11-23 02:09:22,973 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr53REQUIRES_VIOLATION === [alt_mallocErr0REQUIRES_VIOLATION, alt_mallocErr1REQUIRES_VIOLATION, alt_freeErr0REQUIRES_VIOLATION, alt_freeErr1REQUIRES_VIOLATION (and 630 more)] === [2021-11-23 02:09:22,974 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:09:22,974 INFO L85 PathProgramCache]: Analyzing trace with hash 1673308373, now seen corresponding path program 1 times [2021-11-23 02:09:22,974 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 02:09:22,974 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1622289498] [2021-11-23 02:09:22,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:09:22,975 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 02:09:22,975 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b49bf88-4060-4c2b-904c-df318ad22bf5/bin/utaipan-EQgc7hIp5V/mathsat [2021-11-23 02:09:22,976 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b49bf88-4060-4c2b-904c-df318ad22bf5/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 02:09:22,978 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b49bf88-4060-4c2b-904c-df318ad22bf5/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-11-23 02:09:23,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:09:23,168 INFO L263 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-23 02:09:23,172 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 02:09:23,207 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-11-23 02:09:23,562 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 02:09:23,562 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 02:09:24,283 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 02:09:24,283 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 02:09:24,283 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1622289498] [2021-11-23 02:09:24,283 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1622289498] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 02:09:24,283 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:09:24,284 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 7 [2021-11-23 02:09:24,284 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1594691401] [2021-11-23 02:09:24,284 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 02:09:24,285 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-23 02:09:24,285 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 02:09:24,290 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-23 02:09:24,291 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-11-23 02:09:24,291 INFO L87 Difference]: Start difference. First operand 1392 states and 1664 transitions. Second operand has 8 states, 7 states have (on average 9.428571428571429) internal successors, (66), 8 states have internal predecessors, (66), 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) [2021-11-23 02:09:39,720 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:09:39,720 INFO L93 Difference]: Finished difference Result 2203 states and 2643 transitions. [2021-11-23 02:09:39,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-23 02:09:39,721 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 9.428571428571429) internal successors, (66), 8 states have internal predecessors, (66), 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 35 [2021-11-23 02:09:39,722 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:09:39,735 INFO L225 Difference]: With dead ends: 2203 [2021-11-23 02:09:39,735 INFO L226 Difference]: Without dead ends: 2203 [2021-11-23 02:09:39,736 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=44, Invalid=88, Unknown=0, NotChecked=0, Total=132 [2021-11-23 02:09:39,736 INFO L933 BasicCegarLoop]: 1538 mSDtfsCounter, 2182 mSDsluCounter, 3527 mSDsCounter, 0 mSdLazyCounter, 3871 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2182 SdHoareTripleChecker+Valid, 5065 SdHoareTripleChecker+Invalid, 3896 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 3871 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15.1s IncrementalHoareTripleChecker+Time [2021-11-23 02:09:39,737 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2182 Valid, 5065 Invalid, 3896 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 3871 Invalid, 0 Unknown, 0 Unchecked, 15.1s Time] [2021-11-23 02:09:39,740 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2203 states. [2021-11-23 02:09:39,769 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2203 to 1388. [2021-11-23 02:09:39,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1388 states, 855 states have (on average 1.894736842105263) internal successors, (1620), 1366 states have internal predecessors, (1620), 18 states have call successors, (18), 4 states have call predecessors, (18), 4 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2021-11-23 02:09:39,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1388 states to 1388 states and 1656 transitions. [2021-11-23 02:09:39,777 INFO L78 Accepts]: Start accepts. Automaton has 1388 states and 1656 transitions. Word has length 35 [2021-11-23 02:09:39,777 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:09:39,777 INFO L470 AbstractCegarLoop]: Abstraction has 1388 states and 1656 transitions. [2021-11-23 02:09:39,778 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 9.428571428571429) internal successors, (66), 8 states have internal predecessors, (66), 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) [2021-11-23 02:09:39,778 INFO L276 IsEmpty]: Start isEmpty. Operand 1388 states and 1656 transitions. [2021-11-23 02:09:39,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2021-11-23 02:09:39,780 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:09:39,781 INFO L514 BasicCegarLoop]: 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] [2021-11-23 02:09:39,803 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b49bf88-4060-4c2b-904c-df318ad22bf5/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-11-23 02:09:39,999 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b49bf88-4060-4c2b-904c-df318ad22bf5/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 [2021-11-23 02:09:39,999 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting alt_mallocErr0REQUIRES_VIOLATION === [alt_mallocErr0REQUIRES_VIOLATION, alt_mallocErr1REQUIRES_VIOLATION, alt_freeErr0REQUIRES_VIOLATION, alt_freeErr1REQUIRES_VIOLATION (and 630 more)] === [2021-11-23 02:09:40,000 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:09:40,000 INFO L85 PathProgramCache]: Analyzing trace with hash -2063645645, now seen corresponding path program 1 times [2021-11-23 02:09:40,001 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 02:09:40,001 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1174517795] [2021-11-23 02:09:40,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:09:40,001 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 02:09:40,001 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b49bf88-4060-4c2b-904c-df318ad22bf5/bin/utaipan-EQgc7hIp5V/mathsat [2021-11-23 02:09:40,002 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b49bf88-4060-4c2b-904c-df318ad22bf5/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 02:09:40,042 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b49bf88-4060-4c2b-904c-df318ad22bf5/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-11-23 02:09:40,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:09:40,249 INFO L263 TraceCheckSpWp]: Trace formula consists of 178 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-23 02:09:40,251 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 02:09:40,409 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 02:09:40,410 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 02:09:40,562 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 02:09:40,563 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 02:09:40,563 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1174517795] [2021-11-23 02:09:40,563 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1174517795] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 02:09:40,563 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:09:40,564 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-23 02:09:40,564 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [792677006] [2021-11-23 02:09:40,564 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 02:09:40,565 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 02:09:40,565 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 02:09:40,565 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 02:09:40,566 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-23 02:09:40,566 INFO L87 Difference]: Start difference. First operand 1388 states and 1656 transitions. Second operand has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 02:09:40,656 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:09:40,656 INFO L93 Difference]: Finished difference Result 1376 states and 1636 transitions. [2021-11-23 02:09:40,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-23 02:09:40,657 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 54 [2021-11-23 02:09:40,657 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:09:40,667 INFO L225 Difference]: With dead ends: 1376 [2021-11-23 02:09:40,667 INFO L226 Difference]: Without dead ends: 1376 [2021-11-23 02:09:40,668 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 104 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-23 02:09:40,668 INFO L933 BasicCegarLoop]: 1180 mSDtfsCounter, 1104 mSDsluCounter, 1232 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1118 SdHoareTripleChecker+Valid, 2412 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 02:09:40,669 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1118 Valid, 2412 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 02:09:40,673 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1376 states. [2021-11-23 02:09:40,693 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1376 to 1376. [2021-11-23 02:09:40,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1376 states, 843 states have (on average 1.8979833926453145) internal successors, (1600), 1354 states have internal predecessors, (1600), 18 states have call successors, (18), 4 states have call predecessors, (18), 4 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2021-11-23 02:09:40,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1376 states to 1376 states and 1636 transitions. [2021-11-23 02:09:40,700 INFO L78 Accepts]: Start accepts. Automaton has 1376 states and 1636 transitions. Word has length 54 [2021-11-23 02:09:40,700 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:09:40,701 INFO L470 AbstractCegarLoop]: Abstraction has 1376 states and 1636 transitions. [2021-11-23 02:09:40,701 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 02:09:40,701 INFO L276 IsEmpty]: Start isEmpty. Operand 1376 states and 1636 transitions. [2021-11-23 02:09:40,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-11-23 02:09:40,704 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:09:40,704 INFO L514 BasicCegarLoop]: 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] [2021-11-23 02:09:40,726 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b49bf88-4060-4c2b-904c-df318ad22bf5/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-11-23 02:09:40,926 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b49bf88-4060-4c2b-904c-df318ad22bf5/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 [2021-11-23 02:09:40,926 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting alt_mallocErr0REQUIRES_VIOLATION === [alt_mallocErr0REQUIRES_VIOLATION, alt_mallocErr1REQUIRES_VIOLATION, alt_freeErr0REQUIRES_VIOLATION, alt_freeErr1REQUIRES_VIOLATION (and 630 more)] === [2021-11-23 02:09:40,927 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:09:40,927 INFO L85 PathProgramCache]: Analyzing trace with hash -202859289, now seen corresponding path program 1 times [2021-11-23 02:09:40,927 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 02:09:40,928 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [404376069] [2021-11-23 02:09:40,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:09:40,928 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 02:09:40,928 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b49bf88-4060-4c2b-904c-df318ad22bf5/bin/utaipan-EQgc7hIp5V/mathsat [2021-11-23 02:09:40,929 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b49bf88-4060-4c2b-904c-df318ad22bf5/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 02:09:40,931 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b49bf88-4060-4c2b-904c-df318ad22bf5/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-11-23 02:09:41,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:09:41,327 INFO L263 TraceCheckSpWp]: Trace formula consists of 202 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-23 02:09:41,330 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 02:09:41,385 INFO L354 Elim1Store]: treesize reduction 12, result has 40.0 percent of original size [2021-11-23 02:09:41,385 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 18 treesize of output 23 [2021-11-23 02:09:41,543 INFO L354 Elim1Store]: treesize reduction 30, result has 36.2 percent of original size [2021-11-23 02:09:41,544 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 43 treesize of output 54 [2021-11-23 02:09:42,365 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 02:09:42,366 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 02:09:42,799 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 02:09:42,799 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 02:09:42,799 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [404376069] [2021-11-23 02:09:42,800 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [404376069] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 02:09:42,800 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:09:42,800 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 6 [2021-11-23 02:09:42,800 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [987394532] [2021-11-23 02:09:42,800 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 02:09:42,801 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-23 02:09:42,801 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 02:09:42,801 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-23 02:09:42,802 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2021-11-23 02:09:42,802 INFO L87 Difference]: Start difference. First operand 1376 states and 1636 transitions. Second operand has 8 states, 7 states have (on average 17.428571428571427) internal successors, (122), 7 states have internal predecessors, (122), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 02:09:43,037 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:09:43,037 INFO L93 Difference]: Finished difference Result 1386 states and 1649 transitions. [2021-11-23 02:09:43,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-23 02:09:43,039 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 17.428571428571427) internal successors, (122), 7 states have internal predecessors, (122), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2021-11-23 02:09:43,039 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:09:43,049 INFO L225 Difference]: With dead ends: 1386 [2021-11-23 02:09:43,049 INFO L226 Difference]: Without dead ends: 1386 [2021-11-23 02:09:43,050 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 112 SyntacticMatches, 4 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2021-11-23 02:09:43,050 INFO L933 BasicCegarLoop]: 1162 mSDtfsCounter, 57 mSDsluCounter, 1922 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 3084 SdHoareTripleChecker+Invalid, 1127 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1114 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-23 02:09:43,051 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [58 Valid, 3084 Invalid, 1127 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 13 Invalid, 0 Unknown, 1114 Unchecked, 0.2s Time] [2021-11-23 02:09:43,055 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1386 states. [2021-11-23 02:09:43,078 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1386 to 1381. [2021-11-23 02:09:43,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1381 states, 847 states have (on average 1.8949232585596223) internal successors, (1605), 1358 states have internal predecessors, (1605), 19 states have call successors, (19), 5 states have call predecessors, (19), 4 states have return successors, (19), 18 states have call predecessors, (19), 19 states have call successors, (19) [2021-11-23 02:09:43,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1381 states to 1381 states and 1643 transitions. [2021-11-23 02:09:43,086 INFO L78 Accepts]: Start accepts. Automaton has 1381 states and 1643 transitions. Word has length 62 [2021-11-23 02:09:43,086 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:09:43,086 INFO L470 AbstractCegarLoop]: Abstraction has 1381 states and 1643 transitions. [2021-11-23 02:09:43,087 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 17.428571428571427) internal successors, (122), 7 states have internal predecessors, (122), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 02:09:43,087 INFO L276 IsEmpty]: Start isEmpty. Operand 1381 states and 1643 transitions. [2021-11-23 02:09:43,088 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-11-23 02:09:43,088 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:09:43,088 INFO L514 BasicCegarLoop]: 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] [2021-11-23 02:09:43,111 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b49bf88-4060-4c2b-904c-df318ad22bf5/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2021-11-23 02:09:43,306 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b49bf88-4060-4c2b-904c-df318ad22bf5/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 [2021-11-23 02:09:43,306 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting alt_mallocErr1REQUIRES_VIOLATION === [alt_mallocErr0REQUIRES_VIOLATION, alt_mallocErr1REQUIRES_VIOLATION, alt_freeErr0REQUIRES_VIOLATION, alt_freeErr1REQUIRES_VIOLATION (and 630 more)] === [2021-11-23 02:09:43,307 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:09:43,307 INFO L85 PathProgramCache]: Analyzing trace with hash -202859288, now seen corresponding path program 1 times [2021-11-23 02:09:43,308 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 02:09:43,308 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [333347897] [2021-11-23 02:09:43,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:09:43,308 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 02:09:43,308 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b49bf88-4060-4c2b-904c-df318ad22bf5/bin/utaipan-EQgc7hIp5V/mathsat [2021-11-23 02:09:43,310 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b49bf88-4060-4c2b-904c-df318ad22bf5/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 02:09:43,351 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b49bf88-4060-4c2b-904c-df318ad22bf5/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-11-23 02:09:43,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:09:43,838 INFO L263 TraceCheckSpWp]: Trace formula consists of 202 conjuncts, 17 conjunts are in the unsatisfiable core [2021-11-23 02:09:43,842 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 02:09:43,937 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-23 02:09:43,938 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 29 [2021-11-23 02:09:43,947 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-23 02:09:43,948 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 26 treesize of output 22 [2021-11-23 02:09:44,123 INFO L354 Elim1Store]: treesize reduction 28, result has 40.4 percent of original size [2021-11-23 02:09:44,124 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 17 treesize of output 30 [2021-11-23 02:09:51,127 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 02:09:51,128 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 02:09:53,875 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 02:09:53,875 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 02:09:53,876 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [333347897] [2021-11-23 02:09:53,876 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [333347897] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 02:09:53,876 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:09:53,876 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 4] imperfect sequences [] total 9 [2021-11-23 02:09:53,876 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [830428510] [2021-11-23 02:09:53,876 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 02:09:53,877 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-23 02:09:53,877 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 02:09:53,878 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-23 02:09:53,878 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2021-11-23 02:09:53,878 INFO L87 Difference]: Start difference. First operand 1381 states and 1643 transitions. Second operand has 11 states, 10 states have (on average 12.2) internal successors, (122), 10 states have internal predecessors, (122), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 02:10:05,157 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:10:05,157 INFO L93 Difference]: Finished difference Result 1381 states and 1642 transitions. [2021-11-23 02:10:05,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-23 02:10:05,158 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 12.2) internal successors, (122), 10 states have internal predecessors, (122), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2021-11-23 02:10:05,159 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:10:05,164 INFO L225 Difference]: With dead ends: 1381 [2021-11-23 02:10:05,164 INFO L226 Difference]: Without dead ends: 1381 [2021-11-23 02:10:05,164 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 113 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2021-11-23 02:10:05,165 INFO L933 BasicCegarLoop]: 1162 mSDtfsCounter, 78 mSDsluCounter, 2339 mSDsCounter, 0 mSdLazyCounter, 1091 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 78 SdHoareTripleChecker+Valid, 3501 SdHoareTripleChecker+Invalid, 2452 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 1091 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1358 IncrementalHoareTripleChecker+Unchecked, 11.2s IncrementalHoareTripleChecker+Time [2021-11-23 02:10:05,165 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [78 Valid, 3501 Invalid, 2452 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 1091 Invalid, 0 Unknown, 1358 Unchecked, 11.2s Time] [2021-11-23 02:10:05,168 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1381 states. [2021-11-23 02:10:05,185 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1381 to 1381. [2021-11-23 02:10:05,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1381 states, 847 states have (on average 1.8937426210153483) internal successors, (1604), 1358 states have internal predecessors, (1604), 19 states have call successors, (19), 5 states have call predecessors, (19), 4 states have return successors, (19), 18 states have call predecessors, (19), 19 states have call successors, (19) [2021-11-23 02:10:05,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1381 states to 1381 states and 1642 transitions. [2021-11-23 02:10:05,190 INFO L78 Accepts]: Start accepts. Automaton has 1381 states and 1642 transitions. Word has length 62 [2021-11-23 02:10:05,191 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:10:05,191 INFO L470 AbstractCegarLoop]: Abstraction has 1381 states and 1642 transitions. [2021-11-23 02:10:05,191 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 12.2) internal successors, (122), 10 states have internal predecessors, (122), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 02:10:05,191 INFO L276 IsEmpty]: Start isEmpty. Operand 1381 states and 1642 transitions. [2021-11-23 02:10:05,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2021-11-23 02:10:05,192 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:10:05,192 INFO L514 BasicCegarLoop]: 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] [2021-11-23 02:10:05,206 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b49bf88-4060-4c2b-904c-df318ad22bf5/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (14)] Ended with exit code 0 [2021-11-23 02:10:05,406 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b49bf88-4060-4c2b-904c-df318ad22bf5/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 [2021-11-23 02:10:05,406 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK === [alt_mallocErr0REQUIRES_VIOLATION, alt_mallocErr1REQUIRES_VIOLATION, alt_freeErr0REQUIRES_VIOLATION, alt_freeErr1REQUIRES_VIOLATION (and 630 more)] === [2021-11-23 02:10:05,407 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:10:05,407 INFO L85 PathProgramCache]: Analyzing trace with hash 1136013504, now seen corresponding path program 1 times [2021-11-23 02:10:05,408 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 02:10:05,408 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1846585128] [2021-11-23 02:10:05,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:10:05,408 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 02:10:05,409 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b49bf88-4060-4c2b-904c-df318ad22bf5/bin/utaipan-EQgc7hIp5V/mathsat [2021-11-23 02:10:05,410 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b49bf88-4060-4c2b-904c-df318ad22bf5/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 02:10:05,448 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b49bf88-4060-4c2b-904c-df318ad22bf5/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2021-11-23 02:10:05,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:10:05,687 INFO L263 TraceCheckSpWp]: Trace formula consists of 216 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-23 02:10:05,689 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 02:10:05,836 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 02:10:05,836 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 02:10:05,929 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 02:10:05,929 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 02:10:05,929 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1846585128] [2021-11-23 02:10:05,929 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1846585128] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 02:10:05,929 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:10:05,929 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 8 [2021-11-23 02:10:05,930 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1922916326] [2021-11-23 02:10:05,930 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 02:10:05,930 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-23 02:10:05,930 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 02:10:05,930 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-23 02:10:05,930 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-11-23 02:10:05,931 INFO L87 Difference]: Start difference. First operand 1381 states and 1642 transitions. Second operand has 8 states, 8 states have (on average 8.5) internal successors, (68), 5 states have internal predecessors, (68), 2 states have call successors, (3), 3 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 02:10:06,070 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:10:06,070 INFO L93 Difference]: Finished difference Result 1395 states and 1656 transitions. [2021-11-23 02:10:06,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-23 02:10:06,071 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 8.5) internal successors, (68), 5 states have internal predecessors, (68), 2 states have call successors, (3), 3 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 68 [2021-11-23 02:10:06,071 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:10:06,078 INFO L225 Difference]: With dead ends: 1395 [2021-11-23 02:10:06,078 INFO L226 Difference]: Without dead ends: 1395 [2021-11-23 02:10:06,079 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 136 GetRequests, 128 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2021-11-23 02:10:06,079 INFO L933 BasicCegarLoop]: 1178 mSDtfsCounter, 20 mSDsluCounter, 7054 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 8232 SdHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 02:10:06,080 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [20 Valid, 8232 Invalid, 57 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 02:10:06,083 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1395 states. [2021-11-23 02:10:06,101 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1395 to 1393. [2021-11-23 02:10:06,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1393 states, 856 states have (on average 1.8878504672897196) internal successors, (1616), 1368 states have internal predecessors, (1616), 20 states have call successors, (20), 7 states have call predecessors, (20), 6 states have return successors, (20), 19 states have call predecessors, (20), 20 states have call successors, (20) [2021-11-23 02:10:06,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1393 states to 1393 states and 1656 transitions. [2021-11-23 02:10:06,107 INFO L78 Accepts]: Start accepts. Automaton has 1393 states and 1656 transitions. Word has length 68 [2021-11-23 02:10:06,108 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:10:06,108 INFO L470 AbstractCegarLoop]: Abstraction has 1393 states and 1656 transitions. [2021-11-23 02:10:06,108 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.5) internal successors, (68), 5 states have internal predecessors, (68), 2 states have call successors, (3), 3 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 02:10:06,108 INFO L276 IsEmpty]: Start isEmpty. Operand 1393 states and 1656 transitions. [2021-11-23 02:10:06,109 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2021-11-23 02:10:06,109 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:10:06,109 INFO L514 BasicCegarLoop]: 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] [2021-11-23 02:10:06,127 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b49bf88-4060-4c2b-904c-df318ad22bf5/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2021-11-23 02:10:06,328 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b49bf88-4060-4c2b-904c-df318ad22bf5/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 [2021-11-23 02:10:06,328 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr70REQUIRES_VIOLATION === [alt_mallocErr0REQUIRES_VIOLATION, alt_mallocErr1REQUIRES_VIOLATION, alt_freeErr0REQUIRES_VIOLATION, alt_freeErr1REQUIRES_VIOLATION (and 630 more)] === [2021-11-23 02:10:06,329 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:10:06,329 INFO L85 PathProgramCache]: Analyzing trace with hash 1078181117, now seen corresponding path program 1 times [2021-11-23 02:10:06,329 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 02:10:06,329 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [255872475] [2021-11-23 02:10:06,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:10:06,330 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 02:10:06,330 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b49bf88-4060-4c2b-904c-df318ad22bf5/bin/utaipan-EQgc7hIp5V/mathsat [2021-11-23 02:10:06,331 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b49bf88-4060-4c2b-904c-df318ad22bf5/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 02:10:06,370 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b49bf88-4060-4c2b-904c-df318ad22bf5/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2021-11-23 02:10:06,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:10:06,602 INFO L263 TraceCheckSpWp]: Trace formula consists of 220 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-23 02:10:06,605 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 02:10:06,821 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 02:10:06,821 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 02:10:07,137 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 02:10:07,137 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 02:10:07,137 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [255872475] [2021-11-23 02:10:07,137 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [255872475] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 02:10:07,137 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:10:07,137 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2021-11-23 02:10:07,138 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [113424632] [2021-11-23 02:10:07,138 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 02:10:07,138 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-23 02:10:07,138 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 02:10:07,138 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-23 02:10:07,139 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2021-11-23 02:10:07,139 INFO L87 Difference]: Start difference. First operand 1393 states and 1656 transitions. Second operand has 9 states, 9 states have (on average 8.0) internal successors, (72), 6 states have internal predecessors, (72), 1 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-23 02:10:07,418 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:10:07,419 INFO L93 Difference]: Finished difference Result 1437 states and 1704 transitions. [2021-11-23 02:10:07,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-23 02:10:07,419 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 8.0) internal successors, (72), 6 states have internal predecessors, (72), 1 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 68 [2021-11-23 02:10:07,420 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:10:07,427 INFO L225 Difference]: With dead ends: 1437 [2021-11-23 02:10:07,427 INFO L226 Difference]: Without dead ends: 1437 [2021-11-23 02:10:07,427 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 127 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2021-11-23 02:10:07,428 INFO L933 BasicCegarLoop]: 1177 mSDtfsCounter, 127 mSDsluCounter, 5738 mSDsCounter, 0 mSdLazyCounter, 155 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 129 SdHoareTripleChecker+Valid, 6915 SdHoareTripleChecker+Invalid, 176 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 155 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-23 02:10:07,428 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [129 Valid, 6915 Invalid, 176 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 155 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-23 02:10:07,439 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1437 states. [2021-11-23 02:10:07,462 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1437 to 1396. [2021-11-23 02:10:07,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1396 states, 858 states have (on average 1.8857808857808858) internal successors, (1618), 1370 states have internal predecessors, (1618), 20 states have call successors, (20), 7 states have call predecessors, (20), 7 states have return successors, (21), 19 states have call predecessors, (21), 20 states have call successors, (21) [2021-11-23 02:10:07,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1396 states to 1396 states and 1659 transitions. [2021-11-23 02:10:07,482 INFO L78 Accepts]: Start accepts. Automaton has 1396 states and 1659 transitions. Word has length 68 [2021-11-23 02:10:07,482 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:10:07,482 INFO L470 AbstractCegarLoop]: Abstraction has 1396 states and 1659 transitions. [2021-11-23 02:10:07,483 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.0) internal successors, (72), 6 states have internal predecessors, (72), 1 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-23 02:10:07,483 INFO L276 IsEmpty]: Start isEmpty. Operand 1396 states and 1659 transitions. [2021-11-23 02:10:07,483 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2021-11-23 02:10:07,484 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:10:07,484 INFO L514 BasicCegarLoop]: 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] [2021-11-23 02:10:07,501 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b49bf88-4060-4c2b-904c-df318ad22bf5/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2021-11-23 02:10:07,697 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b49bf88-4060-4c2b-904c-df318ad22bf5/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 [2021-11-23 02:10:07,697 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr70REQUIRES_VIOLATION === [alt_mallocErr0REQUIRES_VIOLATION, alt_mallocErr1REQUIRES_VIOLATION, alt_freeErr0REQUIRES_VIOLATION, alt_freeErr1REQUIRES_VIOLATION (and 630 more)] === [2021-11-23 02:10:07,698 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:10:07,698 INFO L85 PathProgramCache]: Analyzing trace with hash 396897840, now seen corresponding path program 1 times [2021-11-23 02:10:07,698 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 02:10:07,699 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [765871211] [2021-11-23 02:10:07,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:10:07,699 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 02:10:07,699 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b49bf88-4060-4c2b-904c-df318ad22bf5/bin/utaipan-EQgc7hIp5V/mathsat [2021-11-23 02:10:07,700 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b49bf88-4060-4c2b-904c-df318ad22bf5/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 02:10:07,740 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b49bf88-4060-4c2b-904c-df318ad22bf5/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2021-11-23 02:10:08,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:10:08,162 INFO L263 TraceCheckSpWp]: Trace formula consists of 227 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-23 02:10:08,165 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 02:10:08,173 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-11-23 02:10:08,439 INFO L354 Elim1Store]: treesize reduction 12, result has 40.0 percent of original size [2021-11-23 02:10:08,440 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 20 [2021-11-23 02:10:08,457 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 02:10:08,457 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 02:10:08,766 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 02:10:08,766 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 02:10:08,766 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [765871211] [2021-11-23 02:10:08,766 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [765871211] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 02:10:08,766 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:10:08,767 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 4] imperfect sequences [] total 6 [2021-11-23 02:10:08,767 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1855878374] [2021-11-23 02:10:08,767 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 02:10:08,767 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-23 02:10:08,767 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 02:10:08,768 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-23 02:10:08,768 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-11-23 02:10:08,768 INFO L87 Difference]: Start difference. First operand 1396 states and 1659 transitions. Second operand has 7 states, 6 states have (on average 12.5) internal successors, (75), 7 states have internal predecessors, (75), 3 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2021-11-23 02:10:12,257 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:10:12,257 INFO L93 Difference]: Finished difference Result 2545 states and 3039 transitions. [2021-11-23 02:10:12,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-23 02:10:12,259 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 12.5) internal successors, (75), 7 states have internal predecessors, (75), 3 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) Word has length 73 [2021-11-23 02:10:12,259 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:10:12,268 INFO L225 Difference]: With dead ends: 2545 [2021-11-23 02:10:12,269 INFO L226 Difference]: Without dead ends: 2545 [2021-11-23 02:10:12,269 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 135 SyntacticMatches, 5 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-11-23 02:10:12,270 INFO L933 BasicCegarLoop]: 1120 mSDtfsCounter, 1585 mSDsluCounter, 2909 mSDsCounter, 0 mSdLazyCounter, 1792 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1591 SdHoareTripleChecker+Valid, 4029 SdHoareTripleChecker+Invalid, 3809 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 1792 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 2011 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2021-11-23 02:10:12,270 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1591 Valid, 4029 Invalid, 3809 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 1792 Invalid, 0 Unknown, 2011 Unchecked, 3.4s Time] [2021-11-23 02:10:12,273 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2545 states. [2021-11-23 02:10:12,297 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2545 to 1395. [2021-11-23 02:10:12,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1395 states, 858 states have (on average 1.8846153846153846) internal successors, (1617), 1369 states have internal predecessors, (1617), 20 states have call successors, (20), 7 states have call predecessors, (20), 7 states have return successors, (21), 19 states have call predecessors, (21), 20 states have call successors, (21) [2021-11-23 02:10:12,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1395 states to 1395 states and 1658 transitions. [2021-11-23 02:10:12,303 INFO L78 Accepts]: Start accepts. Automaton has 1395 states and 1658 transitions. Word has length 73 [2021-11-23 02:10:12,303 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:10:12,304 INFO L470 AbstractCegarLoop]: Abstraction has 1395 states and 1658 transitions. [2021-11-23 02:10:12,304 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 12.5) internal successors, (75), 7 states have internal predecessors, (75), 3 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2021-11-23 02:10:12,304 INFO L276 IsEmpty]: Start isEmpty. Operand 1395 states and 1658 transitions. [2021-11-23 02:10:12,305 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2021-11-23 02:10:12,305 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:10:12,305 INFO L514 BasicCegarLoop]: 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] [2021-11-23 02:10:12,321 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b49bf88-4060-4c2b-904c-df318ad22bf5/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (17)] Ended with exit code 0 [2021-11-23 02:10:12,521 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b49bf88-4060-4c2b-904c-df318ad22bf5/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 [2021-11-23 02:10:12,521 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr71REQUIRES_VIOLATION === [alt_mallocErr0REQUIRES_VIOLATION, alt_mallocErr1REQUIRES_VIOLATION, alt_freeErr0REQUIRES_VIOLATION, alt_freeErr1REQUIRES_VIOLATION (and 630 more)] === [2021-11-23 02:10:12,522 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:10:12,522 INFO L85 PathProgramCache]: Analyzing trace with hash 396897841, now seen corresponding path program 1 times [2021-11-23 02:10:12,522 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 02:10:12,522 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1476594247] [2021-11-23 02:10:12,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:10:12,523 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 02:10:12,523 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b49bf88-4060-4c2b-904c-df318ad22bf5/bin/utaipan-EQgc7hIp5V/mathsat [2021-11-23 02:10:12,524 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b49bf88-4060-4c2b-904c-df318ad22bf5/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 02:10:12,564 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b49bf88-4060-4c2b-904c-df318ad22bf5/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2021-11-23 02:10:12,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:10:12,917 INFO L263 TraceCheckSpWp]: Trace formula consists of 227 conjuncts, 14 conjunts are in the unsatisfiable core [2021-11-23 02:10:12,920 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 02:10:12,933 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-11-23 02:10:12,939 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-11-23 02:10:15,561 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-23 02:10:15,561 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 28 [2021-11-23 02:10:15,569 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-23 02:10:15,570 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 20 treesize of output 20 [2021-11-23 02:10:15,591 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 02:10:15,591 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 02:10:27,097 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 02:10:27,097 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 02:10:27,097 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1476594247] [2021-11-23 02:10:27,097 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1476594247] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 02:10:27,097 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:10:27,097 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 11 [2021-11-23 02:10:27,098 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [56869450] [2021-11-23 02:10:27,098 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 02:10:27,099 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-23 02:10:27,099 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 02:10:27,100 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-23 02:10:27,100 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=101, Unknown=3, NotChecked=0, Total=132 [2021-11-23 02:10:27,100 INFO L87 Difference]: Start difference. First operand 1395 states and 1658 transitions. Second operand has 12 states, 11 states have (on average 11.909090909090908) internal successors, (131), 10 states have internal predecessors, (131), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-11-23 02:10:34,917 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:10:34,917 INFO L93 Difference]: Finished difference Result 2401 states and 2944 transitions. [2021-11-23 02:10:34,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-23 02:10:34,918 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 11.909090909090908) internal successors, (131), 10 states have internal predecessors, (131), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Word has length 73 [2021-11-23 02:10:34,920 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:10:34,925 INFO L225 Difference]: With dead ends: 2401 [2021-11-23 02:10:34,926 INFO L226 Difference]: Without dead ends: 2401 [2021-11-23 02:10:34,926 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 147 GetRequests, 135 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 6.9s TimeCoverageRelationStatistics Valid=43, Invalid=136, Unknown=3, NotChecked=0, Total=182 [2021-11-23 02:10:34,927 INFO L933 BasicCegarLoop]: 891 mSDtfsCounter, 3963 mSDsluCounter, 3173 mSDsCounter, 0 mSdLazyCounter, 3136 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3971 SdHoareTripleChecker+Valid, 4064 SdHoareTripleChecker+Invalid, 6779 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 3136 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 3587 IncrementalHoareTripleChecker+Unchecked, 7.6s IncrementalHoareTripleChecker+Time [2021-11-23 02:10:34,927 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3971 Valid, 4064 Invalid, 6779 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 3136 Invalid, 0 Unknown, 3587 Unchecked, 7.6s Time] [2021-11-23 02:10:34,931 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2401 states. [2021-11-23 02:10:34,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2401 to 1363. [2021-11-23 02:10:34,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1363 states, 860 states have (on average 1.8430232558139534) internal successors, (1585), 1337 states have internal predecessors, (1585), 20 states have call successors, (20), 7 states have call predecessors, (20), 7 states have return successors, (21), 19 states have call predecessors, (21), 20 states have call successors, (21) [2021-11-23 02:10:34,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1363 states to 1363 states and 1626 transitions. [2021-11-23 02:10:34,957 INFO L78 Accepts]: Start accepts. Automaton has 1363 states and 1626 transitions. Word has length 73 [2021-11-23 02:10:34,957 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:10:34,957 INFO L470 AbstractCegarLoop]: Abstraction has 1363 states and 1626 transitions. [2021-11-23 02:10:34,958 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 11.909090909090908) internal successors, (131), 10 states have internal predecessors, (131), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-11-23 02:10:34,958 INFO L276 IsEmpty]: Start isEmpty. Operand 1363 states and 1626 transitions. [2021-11-23 02:10:34,958 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2021-11-23 02:10:34,959 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:10:34,959 INFO L514 BasicCegarLoop]: 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, 1, 1, 1, 1, 1, 1] [2021-11-23 02:10:34,995 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b49bf88-4060-4c2b-904c-df318ad22bf5/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (18)] Ended with exit code 0 [2021-11-23 02:10:35,197 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b49bf88-4060-4c2b-904c-df318ad22bf5/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 [2021-11-23 02:10:35,198 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting alt_bzeroErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE === [alt_mallocErr0REQUIRES_VIOLATION, alt_mallocErr1REQUIRES_VIOLATION, alt_freeErr0REQUIRES_VIOLATION, alt_freeErr1REQUIRES_VIOLATION (and 630 more)] === [2021-11-23 02:10:35,198 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:10:35,198 INFO L85 PathProgramCache]: Analyzing trace with hash -1622258381, now seen corresponding path program 1 times [2021-11-23 02:10:35,199 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 02:10:35,199 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [731727538] [2021-11-23 02:10:35,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:10:35,200 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 02:10:35,200 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b49bf88-4060-4c2b-904c-df318ad22bf5/bin/utaipan-EQgc7hIp5V/mathsat [2021-11-23 02:10:35,201 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b49bf88-4060-4c2b-904c-df318ad22bf5/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 02:10:35,204 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b49bf88-4060-4c2b-904c-df318ad22bf5/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2021-11-23 02:10:35,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:10:35,430 INFO L263 TraceCheckSpWp]: Trace formula consists of 267 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-23 02:10:35,432 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 02:10:35,525 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-11-23 02:10:35,545 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 23 treesize of output 19 [2021-11-23 02:10:35,576 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2021-11-23 02:10:35,640 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 02:10:35,640 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 02:10:35,820 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 02:10:35,820 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 02:10:35,820 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [731727538] [2021-11-23 02:10:35,820 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [731727538] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 02:10:35,820 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:10:35,820 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 7 [2021-11-23 02:10:35,821 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [406017304] [2021-11-23 02:10:35,823 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 02:10:35,827 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-23 02:10:35,828 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 02:10:35,828 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-23 02:10:35,828 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-23 02:10:35,829 INFO L87 Difference]: Start difference. First operand 1363 states and 1626 transitions. Second operand has 8 states, 6 states have (on average 12.5) internal successors, (75), 6 states have internal predecessors, (75), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-23 02:10:40,671 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:10:40,671 INFO L93 Difference]: Finished difference Result 1371 states and 1634 transitions. [2021-11-23 02:10:40,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-23 02:10:40,671 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 6 states have (on average 12.5) internal successors, (75), 6 states have internal predecessors, (75), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 80 [2021-11-23 02:10:40,672 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:10:40,674 INFO L225 Difference]: With dead ends: 1371 [2021-11-23 02:10:40,674 INFO L226 Difference]: Without dead ends: 1371 [2021-11-23 02:10:40,675 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 161 GetRequests, 145 SyntacticMatches, 7 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2021-11-23 02:10:40,676 INFO L933 BasicCegarLoop]: 1137 mSDtfsCounter, 23 mSDsluCounter, 3582 mSDsCounter, 0 mSdLazyCounter, 3291 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 4719 SdHoareTripleChecker+Invalid, 3293 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 3291 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.8s IncrementalHoareTripleChecker+Time [2021-11-23 02:10:40,677 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [23 Valid, 4719 Invalid, 3293 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 3291 Invalid, 0 Unknown, 0 Unchecked, 4.8s Time] [2021-11-23 02:10:40,680 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1371 states. [2021-11-23 02:10:40,696 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1371 to 1370. [2021-11-23 02:10:40,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1370 states, 866 states have (on average 1.8394919168591224) internal successors, (1593), 1343 states have internal predecessors, (1593), 20 states have call successors, (20), 8 states have call predecessors, (20), 8 states have return successors, (21), 19 states have call predecessors, (21), 20 states have call successors, (21) [2021-11-23 02:10:40,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1370 states to 1370 states and 1634 transitions. [2021-11-23 02:10:40,702 INFO L78 Accepts]: Start accepts. Automaton has 1370 states and 1634 transitions. Word has length 80 [2021-11-23 02:10:40,703 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:10:40,703 INFO L470 AbstractCegarLoop]: Abstraction has 1370 states and 1634 transitions. [2021-11-23 02:10:40,703 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 6 states have (on average 12.5) internal successors, (75), 6 states have internal predecessors, (75), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-23 02:10:40,703 INFO L276 IsEmpty]: Start isEmpty. Operand 1370 states and 1634 transitions. [2021-11-23 02:10:40,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2021-11-23 02:10:40,704 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:10:40,704 INFO L514 BasicCegarLoop]: 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, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:10:40,721 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b49bf88-4060-4c2b-904c-df318ad22bf5/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2021-11-23 02:10:40,918 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b49bf88-4060-4c2b-904c-df318ad22bf5/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 [2021-11-23 02:10:40,918 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting alt_bzeroErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE === [alt_mallocErr0REQUIRES_VIOLATION, alt_mallocErr1REQUIRES_VIOLATION, alt_freeErr0REQUIRES_VIOLATION, alt_freeErr1REQUIRES_VIOLATION (and 630 more)] === [2021-11-23 02:10:40,918 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:10:40,919 INFO L85 PathProgramCache]: Analyzing trace with hash 1249597809, now seen corresponding path program 1 times [2021-11-23 02:10:40,919 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 02:10:40,919 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [609533768] [2021-11-23 02:10:40,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:10:40,919 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 02:10:40,920 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b49bf88-4060-4c2b-904c-df318ad22bf5/bin/utaipan-EQgc7hIp5V/mathsat [2021-11-23 02:10:40,921 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b49bf88-4060-4c2b-904c-df318ad22bf5/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 02:10:40,931 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b49bf88-4060-4c2b-904c-df318ad22bf5/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2021-11-23 02:10:41,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:10:41,213 INFO L263 TraceCheckSpWp]: Trace formula consists of 268 conjuncts, 20 conjunts are in the unsatisfiable core [2021-11-23 02:10:41,216 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 02:10:41,324 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-11-23 02:10:41,375 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-11-23 02:10:41,381 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 15 [2021-11-23 02:10:41,446 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 39 treesize of output 27 [2021-11-23 02:10:41,449 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 24 treesize of output 12 [2021-11-23 02:10:41,534 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 02:10:41,534 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 02:10:42,367 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 02:10:42,367 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 02:10:42,368 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [609533768] [2021-11-23 02:10:42,368 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [609533768] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 02:10:42,368 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:10:42,368 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8, 8] imperfect sequences [] total 15 [2021-11-23 02:10:42,368 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [706245378] [2021-11-23 02:10:42,368 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 02:10:42,369 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-11-23 02:10:42,369 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 02:10:42,370 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-11-23 02:10:42,370 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=204, Unknown=0, NotChecked=0, Total=240 [2021-11-23 02:10:42,370 INFO L87 Difference]: Start difference. First operand 1370 states and 1634 transitions. Second operand has 16 states, 13 states have (on average 6.923076923076923) internal successors, (90), 12 states have internal predecessors, (90), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) [2021-11-23 02:11:01,276 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:11:01,276 INFO L93 Difference]: Finished difference Result 1372 states and 1633 transitions. [2021-11-23 02:11:01,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-23 02:11:01,277 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 13 states have (on average 6.923076923076923) internal successors, (90), 12 states have internal predecessors, (90), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) Word has length 81 [2021-11-23 02:11:01,277 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:11:01,279 INFO L225 Difference]: With dead ends: 1372 [2021-11-23 02:11:01,280 INFO L226 Difference]: Without dead ends: 1372 [2021-11-23 02:11:01,280 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 166 GetRequests, 146 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=72, Invalid=390, Unknown=0, NotChecked=0, Total=462 [2021-11-23 02:11:01,280 INFO L933 BasicCegarLoop]: 1136 mSDtfsCounter, 45 mSDsluCounter, 5984 mSDsCounter, 0 mSdLazyCounter, 4399 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 16.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 7120 SdHoareTripleChecker+Invalid, 4407 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 4399 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 18.5s IncrementalHoareTripleChecker+Time [2021-11-23 02:11:01,281 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [45 Valid, 7120 Invalid, 4407 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 4399 Invalid, 0 Unknown, 0 Unchecked, 18.5s Time] [2021-11-23 02:11:01,283 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1372 states. [2021-11-23 02:11:01,300 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1372 to 1370. [2021-11-23 02:11:01,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1370 states, 866 states have (on average 1.838337182448037) internal successors, (1592), 1343 states have internal predecessors, (1592), 20 states have call successors, (20), 8 states have call predecessors, (20), 8 states have return successors, (21), 19 states have call predecessors, (21), 20 states have call successors, (21) [2021-11-23 02:11:01,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1370 states to 1370 states and 1633 transitions. [2021-11-23 02:11:01,307 INFO L78 Accepts]: Start accepts. Automaton has 1370 states and 1633 transitions. Word has length 81 [2021-11-23 02:11:01,308 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:11:01,308 INFO L470 AbstractCegarLoop]: Abstraction has 1370 states and 1633 transitions. [2021-11-23 02:11:01,308 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 13 states have (on average 6.923076923076923) internal successors, (90), 12 states have internal predecessors, (90), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) [2021-11-23 02:11:01,308 INFO L276 IsEmpty]: Start isEmpty. Operand 1370 states and 1633 transitions. [2021-11-23 02:11:01,309 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2021-11-23 02:11:01,309 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:11:01,309 INFO L514 BasicCegarLoop]: 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:11:01,326 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b49bf88-4060-4c2b-904c-df318ad22bf5/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (20)] Forceful destruction successful, exit code 0 [2021-11-23 02:11:01,526 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b49bf88-4060-4c2b-904c-df318ad22bf5/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 [2021-11-23 02:11:01,526 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr78REQUIRES_VIOLATION === [alt_mallocErr0REQUIRES_VIOLATION, alt_mallocErr1REQUIRES_VIOLATION, alt_freeErr0REQUIRES_VIOLATION, alt_freeErr1REQUIRES_VIOLATION (and 630 more)] === [2021-11-23 02:11:01,526 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:11:01,527 INFO L85 PathProgramCache]: Analyzing trace with hash -63374884, now seen corresponding path program 1 times [2021-11-23 02:11:01,527 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 02:11:01,527 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1502328621] [2021-11-23 02:11:01,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:11:01,537 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 02:11:01,537 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b49bf88-4060-4c2b-904c-df318ad22bf5/bin/utaipan-EQgc7hIp5V/mathsat [2021-11-23 02:11:01,538 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b49bf88-4060-4c2b-904c-df318ad22bf5/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 02:11:01,539 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b49bf88-4060-4c2b-904c-df318ad22bf5/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2021-11-23 02:11:01,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:11:01,782 INFO L263 TraceCheckSpWp]: Trace formula consists of 285 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-23 02:11:01,784 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 02:11:01,935 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 02:11:01,935 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 02:11:02,128 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 02:11:02,128 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 02:11:02,128 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1502328621] [2021-11-23 02:11:02,128 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1502328621] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 02:11:02,128 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:11:02,128 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2021-11-23 02:11:02,128 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1005884854] [2021-11-23 02:11:02,128 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 02:11:02,129 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-23 02:11:02,129 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 02:11:02,129 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-23 02:11:02,129 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-11-23 02:11:02,130 INFO L87 Difference]: Start difference. First operand 1370 states and 1633 transitions. Second operand has 8 states, 8 states have (on average 11.0) internal successors, (88), 8 states have internal predecessors, (88), 1 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2021-11-23 02:11:02,298 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:11:02,299 INFO L93 Difference]: Finished difference Result 1382 states and 1646 transitions. [2021-11-23 02:11:02,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-23 02:11:02,300 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 11.0) internal successors, (88), 8 states have internal predecessors, (88), 1 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) Word has length 88 [2021-11-23 02:11:02,300 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:11:02,304 INFO L225 Difference]: With dead ends: 1382 [2021-11-23 02:11:02,304 INFO L226 Difference]: Without dead ends: 1376 [2021-11-23 02:11:02,304 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 178 GetRequests, 168 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=56, Invalid=76, Unknown=0, NotChecked=0, Total=132 [2021-11-23 02:11:02,305 INFO L933 BasicCegarLoop]: 1141 mSDtfsCounter, 33 mSDsluCounter, 3407 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 4548 SdHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 02:11:02,305 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [33 Valid, 4548 Invalid, 53 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 02:11:02,308 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1376 states. [2021-11-23 02:11:02,324 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1376 to 1376. [2021-11-23 02:11:02,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1376 states, 871 states have (on average 1.8346727898966706) internal successors, (1598), 1349 states have internal predecessors, (1598), 20 states have call successors, (20), 8 states have call predecessors, (20), 9 states have return successors, (22), 19 states have call predecessors, (22), 20 states have call successors, (22) [2021-11-23 02:11:02,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1376 states to 1376 states and 1640 transitions. [2021-11-23 02:11:02,329 INFO L78 Accepts]: Start accepts. Automaton has 1376 states and 1640 transitions. Word has length 88 [2021-11-23 02:11:02,329 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:11:02,330 INFO L470 AbstractCegarLoop]: Abstraction has 1376 states and 1640 transitions. [2021-11-23 02:11:02,330 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.0) internal successors, (88), 8 states have internal predecessors, (88), 1 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2021-11-23 02:11:02,330 INFO L276 IsEmpty]: Start isEmpty. Operand 1376 states and 1640 transitions. [2021-11-23 02:11:02,331 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2021-11-23 02:11:02,331 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:11:02,331 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:11:02,349 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b49bf88-4060-4c2b-904c-df318ad22bf5/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (21)] Forceful destruction successful, exit code 0 [2021-11-23 02:11:02,545 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b49bf88-4060-4c2b-904c-df318ad22bf5/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 [2021-11-23 02:11:02,545 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr78REQUIRES_VIOLATION === [alt_mallocErr0REQUIRES_VIOLATION, alt_mallocErr1REQUIRES_VIOLATION, alt_freeErr0REQUIRES_VIOLATION, alt_freeErr1REQUIRES_VIOLATION (and 630 more)] === [2021-11-23 02:11:02,545 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:11:02,545 INFO L85 PathProgramCache]: Analyzing trace with hash 1800220956, now seen corresponding path program 1 times [2021-11-23 02:11:02,546 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 02:11:02,546 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [676326307] [2021-11-23 02:11:02,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:11:02,546 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 02:11:02,546 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b49bf88-4060-4c2b-904c-df318ad22bf5/bin/utaipan-EQgc7hIp5V/mathsat [2021-11-23 02:11:02,547 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b49bf88-4060-4c2b-904c-df318ad22bf5/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 02:11:02,549 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b49bf88-4060-4c2b-904c-df318ad22bf5/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2021-11-23 02:11:02,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:11:02,876 INFO L263 TraceCheckSpWp]: Trace formula consists of 295 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-23 02:11:02,878 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 02:11:03,072 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 02:11:03,072 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 02:11:03,365 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 02:11:03,366 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 02:11:03,366 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [676326307] [2021-11-23 02:11:03,366 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [676326307] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 02:11:03,366 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [649029649] [2021-11-23 02:11:03,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:11:03,366 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-23 02:11:03,366 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b49bf88-4060-4c2b-904c-df318ad22bf5/bin/utaipan-EQgc7hIp5V/cvc4 [2021-11-23 02:11:03,368 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b49bf88-4060-4c2b-904c-df318ad22bf5/bin/utaipan-EQgc7hIp5V/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-23 02:11:03,368 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b49bf88-4060-4c2b-904c-df318ad22bf5/bin/utaipan-EQgc7hIp5V/cvc4 --incremental --print-success --lang smt (23)] Waiting until timeout for monitored process [2021-11-23 02:11:03,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:11:03,711 INFO L263 TraceCheckSpWp]: Trace formula consists of 295 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-23 02:11:03,714 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 02:11:03,866 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 02:11:03,867 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 02:11:04,050 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 02:11:04,050 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [649029649] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 02:11:04,050 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [11501457] [2021-11-23 02:11:04,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:11:04,051 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 02:11:04,051 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b49bf88-4060-4c2b-904c-df318ad22bf5/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 02:11:04,052 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b49bf88-4060-4c2b-904c-df318ad22bf5/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 02:11:04,053 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b49bf88-4060-4c2b-904c-df318ad22bf5/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2021-11-23 02:11:04,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:11:04,244 INFO L263 TraceCheckSpWp]: Trace formula consists of 295 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-23 02:11:04,246 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 02:11:04,437 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 02:11:04,437 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 02:11:04,768 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 02:11:04,769 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [11501457] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 02:11:04,769 INFO L186 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2021-11-23 02:11:04,769 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7, 7, 7, 7] total 17 [2021-11-23 02:11:04,769 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [116892458] [2021-11-23 02:11:04,769 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2021-11-23 02:11:04,770 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-11-23 02:11:04,770 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 02:11:04,771 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-11-23 02:11:04,771 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=179, Unknown=0, NotChecked=0, Total=272 [2021-11-23 02:11:04,772 INFO L87 Difference]: Start difference. First operand 1376 states and 1640 transitions. Second operand has 17 states, 17 states have (on average 5.9411764705882355) internal successors, (101), 17 states have internal predecessors, (101), 1 states have call successors, (3), 1 states have call predecessors, (3), 4 states have return successors, (5), 2 states have call predecessors, (5), 1 states have call successors, (5) [2021-11-23 02:11:05,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:11:05,371 INFO L93 Difference]: Finished difference Result 1394 states and 1661 transitions. [2021-11-23 02:11:05,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-11-23 02:11:05,372 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 5.9411764705882355) internal successors, (101), 17 states have internal predecessors, (101), 1 states have call successors, (3), 1 states have call predecessors, (3), 4 states have return successors, (5), 2 states have call predecessors, (5), 1 states have call successors, (5) Word has length 90 [2021-11-23 02:11:05,372 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:11:05,374 INFO L225 Difference]: With dead ends: 1394 [2021-11-23 02:11:05,375 INFO L226 Difference]: Without dead ends: 1385 [2021-11-23 02:11:05,375 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 545 GetRequests, 519 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 125 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=270, Invalid=486, Unknown=0, NotChecked=0, Total=756 [2021-11-23 02:11:05,376 INFO L933 BasicCegarLoop]: 1145 mSDtfsCounter, 66 mSDsluCounter, 9103 mSDsCounter, 0 mSdLazyCounter, 136 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 66 SdHoareTripleChecker+Valid, 10248 SdHoareTripleChecker+Invalid, 172 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 136 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-23 02:11:05,376 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [66 Valid, 10248 Invalid, 172 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 136 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-23 02:11:05,379 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1385 states. [2021-11-23 02:11:05,394 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1385 to 1382. [2021-11-23 02:11:05,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1382 states, 877 states have (on average 1.830102622576967) internal successors, (1605), 1355 states have internal predecessors, (1605), 20 states have call successors, (20), 8 states have call predecessors, (20), 9 states have return successors, (22), 19 states have call predecessors, (22), 20 states have call successors, (22) [2021-11-23 02:11:05,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1382 states to 1382 states and 1647 transitions. [2021-11-23 02:11:05,399 INFO L78 Accepts]: Start accepts. Automaton has 1382 states and 1647 transitions. Word has length 90 [2021-11-23 02:11:05,399 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:11:05,399 INFO L470 AbstractCegarLoop]: Abstraction has 1382 states and 1647 transitions. [2021-11-23 02:11:05,399 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 5.9411764705882355) internal successors, (101), 17 states have internal predecessors, (101), 1 states have call successors, (3), 1 states have call predecessors, (3), 4 states have return successors, (5), 2 states have call predecessors, (5), 1 states have call successors, (5) [2021-11-23 02:11:05,400 INFO L276 IsEmpty]: Start isEmpty. Operand 1382 states and 1647 transitions. [2021-11-23 02:11:05,400 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-11-23 02:11:05,401 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:11:05,401 INFO L514 BasicCegarLoop]: trace histogram [6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:11:05,444 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b49bf88-4060-4c2b-904c-df318ad22bf5/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2021-11-23 02:11:05,623 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b49bf88-4060-4c2b-904c-df318ad22bf5/bin/utaipan-EQgc7hIp5V/cvc4 --incremental --print-success --lang smt (23)] Forceful destruction successful, exit code 0 [2021-11-23 02:11:05,830 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b49bf88-4060-4c2b-904c-df318ad22bf5/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (22)] Forceful destruction successful, exit code 0 [2021-11-23 02:11:06,021 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b49bf88-4060-4c2b-904c-df318ad22bf5/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true,23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b49bf88-4060-4c2b-904c-df318ad22bf5/bin/utaipan-EQgc7hIp5V/cvc4 --incremental --print-success --lang smt,22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b49bf88-4060-4c2b-904c-df318ad22bf5/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 [2021-11-23 02:11:06,021 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr78REQUIRES_VIOLATION === [alt_mallocErr0REQUIRES_VIOLATION, alt_mallocErr1REQUIRES_VIOLATION, alt_freeErr0REQUIRES_VIOLATION, alt_freeErr1REQUIRES_VIOLATION (and 630 more)] === [2021-11-23 02:11:06,021 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:11:06,022 INFO L85 PathProgramCache]: Analyzing trace with hash 903294876, now seen corresponding path program 2 times [2021-11-23 02:11:06,022 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 02:11:06,022 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1651242830] [2021-11-23 02:11:06,022 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-23 02:11:06,022 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 02:11:06,022 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b49bf88-4060-4c2b-904c-df318ad22bf5/bin/utaipan-EQgc7hIp5V/mathsat [2021-11-23 02:11:06,023 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b49bf88-4060-4c2b-904c-df318ad22bf5/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 02:11:06,025 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b49bf88-4060-4c2b-904c-df318ad22bf5/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (25)] Waiting until timeout for monitored process [2021-11-23 02:11:06,474 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-23 02:11:06,475 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-23 02:11:06,499 INFO L263 TraceCheckSpWp]: Trace formula consists of 315 conjuncts, 11 conjunts are in the unsatisfiable core [2021-11-23 02:11:06,501 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 02:11:06,825 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 02:11:06,825 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 02:11:07,593 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 02:11:07,594 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 02:11:07,594 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1651242830] [2021-11-23 02:11:07,594 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1651242830] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 02:11:07,594 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [2096380859] [2021-11-23 02:11:07,594 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-23 02:11:07,595 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-23 02:11:07,595 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b49bf88-4060-4c2b-904c-df318ad22bf5/bin/utaipan-EQgc7hIp5V/cvc4 [2021-11-23 02:11:07,595 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b49bf88-4060-4c2b-904c-df318ad22bf5/bin/utaipan-EQgc7hIp5V/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-23 02:11:07,596 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b49bf88-4060-4c2b-904c-df318ad22bf5/bin/utaipan-EQgc7hIp5V/cvc4 --incremental --print-success --lang smt (26)] Waiting until timeout for monitored process [2021-11-23 02:11:08,697 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-23 02:11:08,697 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-23 02:11:08,710 INFO L263 TraceCheckSpWp]: Trace formula consists of 315 conjuncts, 11 conjunts are in the unsatisfiable core [2021-11-23 02:11:08,713 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 02:11:08,865 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 02:11:08,865 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 02:11:09,070 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 02:11:09,070 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [2096380859] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 02:11:09,070 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1664751600] [2021-11-23 02:11:09,070 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-23 02:11:09,070 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 02:11:09,071 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b49bf88-4060-4c2b-904c-df318ad22bf5/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 02:11:09,071 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b49bf88-4060-4c2b-904c-df318ad22bf5/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 02:11:09,072 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b49bf88-4060-4c2b-904c-df318ad22bf5/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2021-11-23 02:12:26,844 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-23 02:12:26,845 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-23 02:12:26,876 INFO L263 TraceCheckSpWp]: Trace formula consists of 315 conjuncts, 22 conjunts are in the unsatisfiable core [2021-11-23 02:12:26,881 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 02:12:27,236 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-23 02:12:27,236 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 14 treesize of output 14 [2021-11-23 02:12:27,289 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 18 treesize of output 14 [2021-11-23 02:14:24,829 WARN L227 SmtUtils]: Spent 41.18s on a formula simplification. DAG size of input: 114 DAG size of output: 34 (called from [L 351] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2021-11-23 02:14:24,830 INFO L354 Elim1Store]: treesize reduction 884, result has 5.9 percent of original size [2021-11-23 02:14:24,830 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 6 case distinctions, treesize of input 78 treesize of output 82 [2021-11-23 02:14:25,463 INFO L354 Elim1Store]: treesize reduction 276, result has 0.4 percent of original size [2021-11-23 02:14:25,463 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 8 new quantified variables, introduced 21 case distinctions, treesize of input 127 treesize of output 40 [2021-11-23 02:14:25,648 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 11 refuted. 10 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 02:14:25,648 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 02:14:28,132 INFO L354 Elim1Store]: treesize reduction 5, result has 89.8 percent of original size [2021-11-23 02:14:28,133 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 66 treesize of output 65 [2021-11-23 02:20:10,330 INFO L354 Elim1Store]: treesize reduction 5, result has 89.8 percent of original size [2021-11-23 02:20:10,331 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 119 treesize of output 118 [2021-11-23 02:20:14,171 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_alt_bzero_#Ultimate.C_memset_#t~loopctr316#1_117| (_ BitVec 32)) (|v_alt_bzero_#Ultimate.C_memset_#t~loopctr316#1_115| (_ BitVec 32)) (|v_alt_bzero_#Ultimate.C_memset_#t~loopctr316#1_113| (_ BitVec 32)) (|alt_bzero_#Ultimate.C_memset_#ptr#1.offset| (_ BitVec 32)) (|v_alt_bzero_#Ultimate.C_memset_#t~loopctr316#1_121| (_ BitVec 32)) (|v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_4| (_ BitVec 32)) (|v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_7| (_ BitVec 32)) (|alt_bzero_#Ultimate.C_memset_#t~loopctr316#1| (_ BitVec 32)) (|v_alt_bzero_#Ultimate.C_memset_#t~loopctr316#1_119| (_ BitVec 32))) (or (= |c_alt_bzero_#Ultimate.C_memset_#ptr#1.base| (select (select (store |c_#memory_$Pointer$.base| |c_alt_bzero_#Ultimate.C_memset_#ptr#1.base| (store (store (store (store (store (store (select |c_#memory_$Pointer$.base| |c_alt_bzero_#Ultimate.C_memset_#ptr#1.base|) (bvadd |alt_bzero_#Ultimate.C_memset_#t~loopctr316#1| |alt_bzero_#Ultimate.C_memset_#ptr#1.offset|) (_ bv0 32)) (bvadd |v_alt_bzero_#Ultimate.C_memset_#t~loopctr316#1_121| |alt_bzero_#Ultimate.C_memset_#ptr#1.offset|) (_ bv0 32)) (bvadd |v_alt_bzero_#Ultimate.C_memset_#t~loopctr316#1_119| |alt_bzero_#Ultimate.C_memset_#ptr#1.offset|) (_ bv0 32)) (bvadd |v_alt_bzero_#Ultimate.C_memset_#t~loopctr316#1_117| |alt_bzero_#Ultimate.C_memset_#ptr#1.offset|) (_ bv0 32)) (bvadd |v_alt_bzero_#Ultimate.C_memset_#t~loopctr316#1_115| |alt_bzero_#Ultimate.C_memset_#ptr#1.offset|) (_ bv0 32)) (bvadd |v_alt_bzero_#Ultimate.C_memset_#t~loopctr316#1_113| |alt_bzero_#Ultimate.C_memset_#ptr#1.offset|) (_ bv0 32))) |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_7|) (bvadd (_ bv8 32) |v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_4|))) (exists ((|v_alt_bzero_#Ultimate.C_memset_#t~loopctr316#1_106| (_ BitVec 32)) (|v_alt_bzero_#Ultimate.C_memset_#t~loopctr316#1_107| (_ BitVec 32)) (|v_alt_bzero_#Ultimate.C_memset_#t~loopctr316#1_104| (_ BitVec 32)) (|v_alt_bzero_#Ultimate.C_memset_#t~loopctr316#1_105| (_ BitVec 32)) (|v_alt_bzero_#Ultimate.C_memset_#ptr#1.offset_34| (_ BitVec 32)) (|v_alt_bzero_#Ultimate.C_memset_#t~loopctr316#1_108| (_ BitVec 32)) (|v_alt_bzero_#Ultimate.C_memset_#t~loopctr316#1_109| (_ BitVec 32))) (not (= |c_alt_bzero_#in~a#1.base| (select (select (store |c_old(#memory_$Pointer$.base)| |c_alt_bzero_#in~a#1.base| (store (store (store (store (store (store (select |c_old(#memory_$Pointer$.base)| |c_alt_bzero_#in~a#1.base|) (bvadd |v_alt_bzero_#Ultimate.C_memset_#t~loopctr316#1_105| |v_alt_bzero_#Ultimate.C_memset_#ptr#1.offset_34|) (_ bv0 32)) (bvadd |v_alt_bzero_#Ultimate.C_memset_#t~loopctr316#1_104| |v_alt_bzero_#Ultimate.C_memset_#ptr#1.offset_34|) (_ bv0 32)) (bvadd |v_alt_bzero_#Ultimate.C_memset_#t~loopctr316#1_107| |v_alt_bzero_#Ultimate.C_memset_#ptr#1.offset_34|) (_ bv0 32)) (bvadd |v_alt_bzero_#Ultimate.C_memset_#t~loopctr316#1_106| |v_alt_bzero_#Ultimate.C_memset_#ptr#1.offset_34|) (_ bv0 32)) (bvadd |v_alt_bzero_#Ultimate.C_memset_#t~loopctr316#1_109| |v_alt_bzero_#Ultimate.C_memset_#ptr#1.offset_34|) (_ bv0 32)) (bvadd |v_alt_bzero_#Ultimate.C_memset_#t~loopctr316#1_108| |v_alt_bzero_#Ultimate.C_memset_#ptr#1.offset_34|) (_ bv0 32))) |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_7|) (bvadd (_ bv8 32) |v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_4|))))))) is different from false [2021-11-23 02:20:17,253 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_alt_bzero_#Ultimate.C_memset_#t~loopctr316#1_117| (_ BitVec 32)) (|v_alt_bzero_#Ultimate.C_memset_#t~loopctr316#1_115| (_ BitVec 32)) (|v_alt_bzero_#Ultimate.C_memset_#t~loopctr316#1_113| (_ BitVec 32)) (|alt_bzero_#Ultimate.C_memset_#ptr#1.offset| (_ BitVec 32)) (|v_alt_bzero_#Ultimate.C_memset_#t~loopctr316#1_121| (_ BitVec 32)) (|v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_4| (_ BitVec 32)) (|v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_7| (_ BitVec 32)) (|alt_bzero_#Ultimate.C_memset_#t~loopctr316#1| (_ BitVec 32)) (|v_alt_bzero_#Ultimate.C_memset_#t~loopctr316#1_119| (_ BitVec 32))) (or (exists ((|v_alt_bzero_#Ultimate.C_memset_#t~loopctr316#1_106| (_ BitVec 32)) (|v_alt_bzero_#Ultimate.C_memset_#t~loopctr316#1_107| (_ BitVec 32)) (|v_alt_bzero_#Ultimate.C_memset_#t~loopctr316#1_104| (_ BitVec 32)) (|v_alt_bzero_#Ultimate.C_memset_#t~loopctr316#1_105| (_ BitVec 32)) (|v_alt_bzero_#Ultimate.C_memset_#ptr#1.offset_34| (_ BitVec 32)) (|v_alt_bzero_#Ultimate.C_memset_#t~loopctr316#1_108| (_ BitVec 32)) (|v_alt_bzero_#Ultimate.C_memset_#t~loopctr316#1_109| (_ BitVec 32))) (not (= |c_alt_bzero_#in~a#1.base| (select (select (store |c_old(#memory_$Pointer$.base)| |c_alt_bzero_#in~a#1.base| (store (store (store (store (store (store (select |c_old(#memory_$Pointer$.base)| |c_alt_bzero_#in~a#1.base|) (bvadd |v_alt_bzero_#Ultimate.C_memset_#t~loopctr316#1_105| |v_alt_bzero_#Ultimate.C_memset_#ptr#1.offset_34|) (_ bv0 32)) (bvadd |v_alt_bzero_#Ultimate.C_memset_#t~loopctr316#1_104| |v_alt_bzero_#Ultimate.C_memset_#ptr#1.offset_34|) (_ bv0 32)) (bvadd |v_alt_bzero_#Ultimate.C_memset_#t~loopctr316#1_107| |v_alt_bzero_#Ultimate.C_memset_#ptr#1.offset_34|) (_ bv0 32)) (bvadd |v_alt_bzero_#Ultimate.C_memset_#t~loopctr316#1_106| |v_alt_bzero_#Ultimate.C_memset_#ptr#1.offset_34|) (_ bv0 32)) (bvadd |v_alt_bzero_#Ultimate.C_memset_#t~loopctr316#1_109| |v_alt_bzero_#Ultimate.C_memset_#ptr#1.offset_34|) (_ bv0 32)) (bvadd |v_alt_bzero_#Ultimate.C_memset_#t~loopctr316#1_108| |v_alt_bzero_#Ultimate.C_memset_#ptr#1.offset_34|) (_ bv0 32))) |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_7|) (bvadd (_ bv8 32) |v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_4|))))) (= |c_alt_bzero_#in~a#1.base| (select (select (store |c_#memory_$Pointer$.base| |c_alt_bzero_#in~a#1.base| (store (store (store (store (store (store (select |c_#memory_$Pointer$.base| |c_alt_bzero_#in~a#1.base|) (bvadd |alt_bzero_#Ultimate.C_memset_#t~loopctr316#1| |alt_bzero_#Ultimate.C_memset_#ptr#1.offset|) (_ bv0 32)) (bvadd |v_alt_bzero_#Ultimate.C_memset_#t~loopctr316#1_121| |alt_bzero_#Ultimate.C_memset_#ptr#1.offset|) (_ bv0 32)) (bvadd |v_alt_bzero_#Ultimate.C_memset_#t~loopctr316#1_119| |alt_bzero_#Ultimate.C_memset_#ptr#1.offset|) (_ bv0 32)) (bvadd |v_alt_bzero_#Ultimate.C_memset_#t~loopctr316#1_117| |alt_bzero_#Ultimate.C_memset_#ptr#1.offset|) (_ bv0 32)) (bvadd |v_alt_bzero_#Ultimate.C_memset_#t~loopctr316#1_115| |alt_bzero_#Ultimate.C_memset_#ptr#1.offset|) (_ bv0 32)) (bvadd |v_alt_bzero_#Ultimate.C_memset_#t~loopctr316#1_113| |alt_bzero_#Ultimate.C_memset_#ptr#1.offset|) (_ bv0 32))) |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_7|) (bvadd (_ bv8 32) |v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_4|))))) is different from false [2021-11-23 02:20:52,009 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 17 treesize of output 13 [2021-11-23 02:20:52,029 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 0 refuted. 21 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 02:20:52,029 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1664751600] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 02:20:52,030 INFO L186 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2021-11-23 02:20:52,030 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11, 11, 18, 18] total 53 [2021-11-23 02:20:52,030 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1762533775] [2021-11-23 02:20:52,030 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2021-11-23 02:20:52,031 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 53 states [2021-11-23 02:20:52,031 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 02:20:52,032 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2021-11-23 02:20:52,033 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=202, Invalid=2203, Unknown=153, NotChecked=198, Total=2756 [2021-11-23 02:20:52,034 INFO L87 Difference]: Start difference. First operand 1382 states and 1647 transitions. Second operand has 53 states, 51 states have (on average 4.96078431372549) internal successors, (253), 49 states have internal predecessors, (253), 7 states have call successors, (9), 5 states have call predecessors, (9), 7 states have return successors, (10), 8 states have call predecessors, (10), 7 states have call successors, (10) [2021-11-23 02:21:01,920 WARN L838 $PredicateComparison]: unable to prove that (and (= |c_old(#valid)| |c_#valid|) (forall ((|v_alt_bzero_#Ultimate.C_memset_#t~loopctr316#1_117| (_ BitVec 32)) (|v_alt_bzero_#Ultimate.C_memset_#t~loopctr316#1_115| (_ BitVec 32)) (|v_alt_bzero_#Ultimate.C_memset_#t~loopctr316#1_113| (_ BitVec 32)) (|alt_bzero_#Ultimate.C_memset_#ptr#1.offset| (_ BitVec 32)) (|v_alt_bzero_#Ultimate.C_memset_#t~loopctr316#1_121| (_ BitVec 32)) (|v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_4| (_ BitVec 32)) (|v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_7| (_ BitVec 32)) (|alt_bzero_#Ultimate.C_memset_#t~loopctr316#1| (_ BitVec 32)) (|v_alt_bzero_#Ultimate.C_memset_#t~loopctr316#1_119| (_ BitVec 32))) (or (exists ((|v_alt_bzero_#Ultimate.C_memset_#t~loopctr316#1_106| (_ BitVec 32)) (|v_alt_bzero_#Ultimate.C_memset_#t~loopctr316#1_107| (_ BitVec 32)) (|v_alt_bzero_#Ultimate.C_memset_#t~loopctr316#1_104| (_ BitVec 32)) (|v_alt_bzero_#Ultimate.C_memset_#t~loopctr316#1_105| (_ BitVec 32)) (|v_alt_bzero_#Ultimate.C_memset_#ptr#1.offset_34| (_ BitVec 32)) (|v_alt_bzero_#Ultimate.C_memset_#t~loopctr316#1_108| (_ BitVec 32)) (|v_alt_bzero_#Ultimate.C_memset_#t~loopctr316#1_109| (_ BitVec 32))) (not (= |c_alt_bzero_#in~a#1.base| (select (select (store |c_old(#memory_$Pointer$.base)| |c_alt_bzero_#in~a#1.base| (store (store (store (store (store (store (select |c_old(#memory_$Pointer$.base)| |c_alt_bzero_#in~a#1.base|) (bvadd |v_alt_bzero_#Ultimate.C_memset_#t~loopctr316#1_105| |v_alt_bzero_#Ultimate.C_memset_#ptr#1.offset_34|) (_ bv0 32)) (bvadd |v_alt_bzero_#Ultimate.C_memset_#t~loopctr316#1_104| |v_alt_bzero_#Ultimate.C_memset_#ptr#1.offset_34|) (_ bv0 32)) (bvadd |v_alt_bzero_#Ultimate.C_memset_#t~loopctr316#1_107| |v_alt_bzero_#Ultimate.C_memset_#ptr#1.offset_34|) (_ bv0 32)) (bvadd |v_alt_bzero_#Ultimate.C_memset_#t~loopctr316#1_106| |v_alt_bzero_#Ultimate.C_memset_#ptr#1.offset_34|) (_ bv0 32)) (bvadd |v_alt_bzero_#Ultimate.C_memset_#t~loopctr316#1_109| |v_alt_bzero_#Ultimate.C_memset_#ptr#1.offset_34|) (_ bv0 32)) (bvadd |v_alt_bzero_#Ultimate.C_memset_#t~loopctr316#1_108| |v_alt_bzero_#Ultimate.C_memset_#ptr#1.offset_34|) (_ bv0 32))) |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_7|) (bvadd (_ bv8 32) |v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_4|))))) (= |c_alt_bzero_#in~a#1.base| (select (select (store |c_#memory_$Pointer$.base| |c_alt_bzero_#in~a#1.base| (store (store (store (store (store (store (select |c_#memory_$Pointer$.base| |c_alt_bzero_#in~a#1.base|) (bvadd |alt_bzero_#Ultimate.C_memset_#t~loopctr316#1| |alt_bzero_#Ultimate.C_memset_#ptr#1.offset|) (_ bv0 32)) (bvadd |v_alt_bzero_#Ultimate.C_memset_#t~loopctr316#1_121| |alt_bzero_#Ultimate.C_memset_#ptr#1.offset|) (_ bv0 32)) (bvadd |v_alt_bzero_#Ultimate.C_memset_#t~loopctr316#1_119| |alt_bzero_#Ultimate.C_memset_#ptr#1.offset|) (_ bv0 32)) (bvadd |v_alt_bzero_#Ultimate.C_memset_#t~loopctr316#1_117| |alt_bzero_#Ultimate.C_memset_#ptr#1.offset|) (_ bv0 32)) (bvadd |v_alt_bzero_#Ultimate.C_memset_#t~loopctr316#1_115| |alt_bzero_#Ultimate.C_memset_#ptr#1.offset|) (_ bv0 32)) (bvadd |v_alt_bzero_#Ultimate.C_memset_#t~loopctr316#1_113| |alt_bzero_#Ultimate.C_memset_#ptr#1.offset|) (_ bv0 32))) |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_7|) (bvadd (_ bv8 32) |v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_4|))))) (= |c_old(#memory_$Pointer$.base)| |c_#memory_$Pointer$.base|)) is different from false [2021-11-23 02:21:04,013 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((|v_alt_bzero_#Ultimate.C_memset_#t~loopctr316#1_117| (_ BitVec 32)) (|v_alt_bzero_#Ultimate.C_memset_#t~loopctr316#1_115| (_ BitVec 32)) (|v_alt_bzero_#Ultimate.C_memset_#t~loopctr316#1_113| (_ BitVec 32)) (|alt_bzero_#Ultimate.C_memset_#ptr#1.offset| (_ BitVec 32)) (|v_alt_bzero_#Ultimate.C_memset_#t~loopctr316#1_121| (_ BitVec 32)) (|v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_4| (_ BitVec 32)) (|v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_7| (_ BitVec 32)) (|alt_bzero_#Ultimate.C_memset_#t~loopctr316#1| (_ BitVec 32)) (|v_alt_bzero_#Ultimate.C_memset_#t~loopctr316#1_119| (_ BitVec 32))) (or (= |c_alt_bzero_#Ultimate.C_memset_#ptr#1.base| (select (select (store |c_#memory_$Pointer$.base| |c_alt_bzero_#Ultimate.C_memset_#ptr#1.base| (store (store (store (store (store (store (select |c_#memory_$Pointer$.base| |c_alt_bzero_#Ultimate.C_memset_#ptr#1.base|) (bvadd |alt_bzero_#Ultimate.C_memset_#t~loopctr316#1| |alt_bzero_#Ultimate.C_memset_#ptr#1.offset|) (_ bv0 32)) (bvadd |v_alt_bzero_#Ultimate.C_memset_#t~loopctr316#1_121| |alt_bzero_#Ultimate.C_memset_#ptr#1.offset|) (_ bv0 32)) (bvadd |v_alt_bzero_#Ultimate.C_memset_#t~loopctr316#1_119| |alt_bzero_#Ultimate.C_memset_#ptr#1.offset|) (_ bv0 32)) (bvadd |v_alt_bzero_#Ultimate.C_memset_#t~loopctr316#1_117| |alt_bzero_#Ultimate.C_memset_#ptr#1.offset|) (_ bv0 32)) (bvadd |v_alt_bzero_#Ultimate.C_memset_#t~loopctr316#1_115| |alt_bzero_#Ultimate.C_memset_#ptr#1.offset|) (_ bv0 32)) (bvadd |v_alt_bzero_#Ultimate.C_memset_#t~loopctr316#1_113| |alt_bzero_#Ultimate.C_memset_#ptr#1.offset|) (_ bv0 32))) |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_7|) (bvadd (_ bv8 32) |v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_4|))) (exists ((|v_alt_bzero_#Ultimate.C_memset_#t~loopctr316#1_106| (_ BitVec 32)) (|v_alt_bzero_#Ultimate.C_memset_#t~loopctr316#1_107| (_ BitVec 32)) (|v_alt_bzero_#Ultimate.C_memset_#t~loopctr316#1_104| (_ BitVec 32)) (|v_alt_bzero_#Ultimate.C_memset_#t~loopctr316#1_105| (_ BitVec 32)) (|v_alt_bzero_#Ultimate.C_memset_#ptr#1.offset_34| (_ BitVec 32)) (|v_alt_bzero_#Ultimate.C_memset_#t~loopctr316#1_108| (_ BitVec 32)) (|v_alt_bzero_#Ultimate.C_memset_#t~loopctr316#1_109| (_ BitVec 32))) (not (= |c_alt_bzero_#in~a#1.base| (select (select (store |c_old(#memory_$Pointer$.base)| |c_alt_bzero_#in~a#1.base| (store (store (store (store (store (store (select |c_old(#memory_$Pointer$.base)| |c_alt_bzero_#in~a#1.base|) (bvadd |v_alt_bzero_#Ultimate.C_memset_#t~loopctr316#1_105| |v_alt_bzero_#Ultimate.C_memset_#ptr#1.offset_34|) (_ bv0 32)) (bvadd |v_alt_bzero_#Ultimate.C_memset_#t~loopctr316#1_104| |v_alt_bzero_#Ultimate.C_memset_#ptr#1.offset_34|) (_ bv0 32)) (bvadd |v_alt_bzero_#Ultimate.C_memset_#t~loopctr316#1_107| |v_alt_bzero_#Ultimate.C_memset_#ptr#1.offset_34|) (_ bv0 32)) (bvadd |v_alt_bzero_#Ultimate.C_memset_#t~loopctr316#1_106| |v_alt_bzero_#Ultimate.C_memset_#ptr#1.offset_34|) (_ bv0 32)) (bvadd |v_alt_bzero_#Ultimate.C_memset_#t~loopctr316#1_109| |v_alt_bzero_#Ultimate.C_memset_#ptr#1.offset_34|) (_ bv0 32)) (bvadd |v_alt_bzero_#Ultimate.C_memset_#t~loopctr316#1_108| |v_alt_bzero_#Ultimate.C_memset_#ptr#1.offset_34|) (_ bv0 32))) |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_7|) (bvadd (_ bv8 32) |v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_4|))))))) (= |c_alt_bzero_#in~n#1| |c_alt_bzero_#Ultimate.C_memset_#amount#1|) (= |c_alt_bzero_#in~a#1.base| |c_alt_bzero_#Ultimate.C_memset_#ptr#1.base|) (= |c_old(#memory_$Pointer$.base)| |c_#memory_$Pointer$.base|)) is different from false