./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/weaver/parallel-parallel-sum-1-dsl.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 2329fc70 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4001d732-8413-45f9-b5b4-b6c09a8e87e7/bin/utaipan-gh47qXpMRh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4001d732-8413-45f9-b5b4-b6c09a8e87e7/bin/utaipan-gh47qXpMRh/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4001d732-8413-45f9-b5b4-b6c09a8e87e7/bin/utaipan-gh47qXpMRh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4001d732-8413-45f9-b5b4-b6c09a8e87e7/bin/utaipan-gh47qXpMRh/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/weaver/parallel-parallel-sum-1-dsl.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4001d732-8413-45f9-b5b4-b6c09a8e87e7/bin/utaipan-gh47qXpMRh/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4001d732-8413-45f9-b5b4-b6c09a8e87e7/bin/utaipan-gh47qXpMRh --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 2b8fef41c3119c5f4fc9586ebd31a4ff7152be41d9f2f8da139e8cd34cf0da86 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-2329fc7 [2022-12-14 07:43:25,668 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-14 07:43:25,670 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-14 07:43:25,690 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-14 07:43:25,691 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-14 07:43:25,692 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-14 07:43:25,693 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-14 07:43:25,695 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-14 07:43:25,696 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-14 07:43:25,697 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-14 07:43:25,698 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-14 07:43:25,699 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-14 07:43:25,700 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-14 07:43:25,701 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-14 07:43:25,702 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-14 07:43:25,703 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-14 07:43:25,704 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-14 07:43:25,705 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-14 07:43:25,706 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-14 07:43:25,708 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-14 07:43:25,709 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-14 07:43:25,711 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-14 07:43:25,712 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-14 07:43:25,712 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-14 07:43:25,716 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-14 07:43:25,716 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-14 07:43:25,717 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-14 07:43:25,717 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-14 07:43:25,718 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-14 07:43:25,719 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-14 07:43:25,719 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-14 07:43:25,720 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-14 07:43:25,720 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-14 07:43:25,721 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-14 07:43:25,722 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-14 07:43:25,722 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-14 07:43:25,723 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-14 07:43:25,723 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-14 07:43:25,723 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-14 07:43:25,724 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-14 07:43:25,725 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-14 07:43:25,726 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4001d732-8413-45f9-b5b4-b6c09a8e87e7/bin/utaipan-gh47qXpMRh/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2022-12-14 07:43:25,747 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-14 07:43:25,747 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-14 07:43:25,748 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-14 07:43:25,748 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-14 07:43:25,749 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-14 07:43:25,749 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-14 07:43:25,749 INFO L138 SettingsManager]: * User list type=DISABLED [2022-12-14 07:43:25,749 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-12-14 07:43:25,749 INFO L138 SettingsManager]: * Explicit value domain=true [2022-12-14 07:43:25,750 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-12-14 07:43:25,750 INFO L138 SettingsManager]: * Octagon Domain=false [2022-12-14 07:43:25,750 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-12-14 07:43:25,750 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-12-14 07:43:25,750 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-12-14 07:43:25,750 INFO L138 SettingsManager]: * Interval Domain=false [2022-12-14 07:43:25,751 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-12-14 07:43:25,751 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-12-14 07:43:25,751 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-12-14 07:43:25,752 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-14 07:43:25,752 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-14 07:43:25,752 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-14 07:43:25,752 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-14 07:43:25,753 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-12-14 07:43:25,753 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-14 07:43:25,753 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-14 07:43:25,753 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-14 07:43:25,753 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-12-14 07:43:25,753 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-12-14 07:43:25,754 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-12-14 07:43:25,754 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-14 07:43:25,754 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-12-14 07:43:25,754 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-14 07:43:25,754 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-14 07:43:25,754 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-14 07:43:25,755 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-14 07:43:25,755 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 07:43:25,755 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-14 07:43:25,755 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-12-14 07:43:25,755 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-14 07:43:25,756 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-12-14 07:43:25,756 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-14 07:43:25,756 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-12-14 07:43:25,756 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4001d732-8413-45f9-b5b4-b6c09a8e87e7/bin/utaipan-gh47qXpMRh/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4001d732-8413-45f9-b5b4-b6c09a8e87e7/bin/utaipan-gh47qXpMRh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2b8fef41c3119c5f4fc9586ebd31a4ff7152be41d9f2f8da139e8cd34cf0da86 [2022-12-14 07:43:25,933 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-14 07:43:25,952 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-14 07:43:25,954 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-14 07:43:25,955 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-14 07:43:25,955 INFO L275 PluginConnector]: CDTParser initialized [2022-12-14 07:43:25,956 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4001d732-8413-45f9-b5b4-b6c09a8e87e7/bin/utaipan-gh47qXpMRh/../../sv-benchmarks/c/weaver/parallel-parallel-sum-1-dsl.wvr.c [2022-12-14 07:43:28,540 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-14 07:43:28,711 INFO L351 CDTParser]: Found 1 translation units. [2022-12-14 07:43:28,711 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4001d732-8413-45f9-b5b4-b6c09a8e87e7/sv-benchmarks/c/weaver/parallel-parallel-sum-1-dsl.wvr.c [2022-12-14 07:43:28,716 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4001d732-8413-45f9-b5b4-b6c09a8e87e7/bin/utaipan-gh47qXpMRh/data/bf227880b/bceeedf974db4c5c9f0a783778affc94/FLAG99010ebbb [2022-12-14 07:43:29,099 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4001d732-8413-45f9-b5b4-b6c09a8e87e7/bin/utaipan-gh47qXpMRh/data/bf227880b/bceeedf974db4c5c9f0a783778affc94 [2022-12-14 07:43:29,101 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-14 07:43:29,102 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-14 07:43:29,103 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-14 07:43:29,103 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-14 07:43:29,105 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-14 07:43:29,106 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 07:43:29" (1/1) ... [2022-12-14 07:43:29,107 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@51dc9029 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 07:43:29, skipping insertion in model container [2022-12-14 07:43:29,107 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 07:43:29" (1/1) ... [2022-12-14 07:43:29,112 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-14 07:43:29,125 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-14 07:43:29,242 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-14 07:43:29,244 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-14 07:43:29,245 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-14 07:43:29,246 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-14 07:43:29,248 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-14 07:43:29,248 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-14 07:43:29,250 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-14 07:43:29,251 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-14 07:43:29,251 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-14 07:43:29,252 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-14 07:43:29,252 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-14 07:43:29,253 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-14 07:43:29,254 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-14 07:43:29,254 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-14 07:43:29,260 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-14 07:43:29,260 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-14 07:43:29,261 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-14 07:43:29,261 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-14 07:43:29,261 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-14 07:43:29,262 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-14 07:43:29,262 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-14 07:43:29,263 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-14 07:43:29,264 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-14 07:43:29,264 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-14 07:43:29,265 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-14 07:43:29,265 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-14 07:43:29,266 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-14 07:43:29,266 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-14 07:43:29,272 WARN L237 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_4001d732-8413-45f9-b5b4-b6c09a8e87e7/sv-benchmarks/c/weaver/parallel-parallel-sum-1-dsl.wvr.c[4372,4385] [2022-12-14 07:43:29,281 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 07:43:29,289 ERROR L326 MainTranslator]: Unsupported Syntax: Found a cast between two array/pointer types of different sizes while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) [2022-12-14 07:43:29,289 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@33a4adbf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 07:43:29, skipping insertion in model container [2022-12-14 07:43:29,290 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-14 07:43:29,290 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2022-12-14 07:43:29,291 INFO L158 Benchmark]: Toolchain (without parser) took 188.47ms. Allocated memory is still 146.8MB. Free memory was 101.1MB in the beginning and 89.1MB in the end (delta: 11.9MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2022-12-14 07:43:29,291 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 146.8MB. Free memory is still 100.9MB. There was no memory consumed. Max. memory is 16.1GB. [2022-12-14 07:43:29,292 INFO L158 Benchmark]: CACSL2BoogieTranslator took 186.99ms. Allocated memory is still 146.8MB. Free memory was 100.7MB in the beginning and 89.1MB in the end (delta: 11.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2022-12-14 07:43:29,292 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14ms. Allocated memory is still 146.8MB. Free memory is still 100.9MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 186.99ms. Allocated memory is still 146.8MB. Free memory was 100.7MB in the beginning and 89.1MB in the end (delta: 11.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 183]: Unsupported Syntax Found a cast between two array/pointer types of different sizes while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4001d732-8413-45f9-b5b4-b6c09a8e87e7/bin/utaipan-gh47qXpMRh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4001d732-8413-45f9-b5b4-b6c09a8e87e7/bin/utaipan-gh47qXpMRh/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4001d732-8413-45f9-b5b4-b6c09a8e87e7/bin/utaipan-gh47qXpMRh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4001d732-8413-45f9-b5b4-b6c09a8e87e7/bin/utaipan-gh47qXpMRh/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/weaver/parallel-parallel-sum-1-dsl.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4001d732-8413-45f9-b5b4-b6c09a8e87e7/bin/utaipan-gh47qXpMRh/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4001d732-8413-45f9-b5b4-b6c09a8e87e7/bin/utaipan-gh47qXpMRh --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 2b8fef41c3119c5f4fc9586ebd31a4ff7152be41d9f2f8da139e8cd34cf0da86 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-2329fc7 [2022-12-14 07:43:30,692 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-14 07:43:30,694 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-14 07:43:30,713 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-14 07:43:30,713 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-14 07:43:30,714 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-14 07:43:30,715 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-14 07:43:30,717 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-14 07:43:30,719 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-14 07:43:30,719 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-14 07:43:30,720 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-14 07:43:30,721 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-14 07:43:30,722 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-14 07:43:30,723 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-14 07:43:30,724 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-14 07:43:30,725 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-14 07:43:30,725 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-14 07:43:30,726 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-14 07:43:30,728 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-14 07:43:30,729 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-14 07:43:30,731 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-14 07:43:30,732 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-14 07:43:30,733 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-14 07:43:30,734 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-14 07:43:30,737 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-14 07:43:30,737 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-14 07:43:30,737 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-14 07:43:30,738 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-14 07:43:30,739 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-14 07:43:30,739 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-14 07:43:30,740 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-14 07:43:30,740 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-14 07:43:30,741 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-14 07:43:30,742 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-14 07:43:30,743 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-14 07:43:30,743 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-14 07:43:30,743 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-14 07:43:30,744 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-14 07:43:30,744 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-14 07:43:30,745 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-14 07:43:30,745 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-14 07:43:30,746 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4001d732-8413-45f9-b5b4-b6c09a8e87e7/bin/utaipan-gh47qXpMRh/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf [2022-12-14 07:43:30,775 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-14 07:43:30,775 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-14 07:43:30,775 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-14 07:43:30,776 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-14 07:43:30,776 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-14 07:43:30,776 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-14 07:43:30,777 INFO L138 SettingsManager]: * User list type=DISABLED [2022-12-14 07:43:30,777 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-12-14 07:43:30,777 INFO L138 SettingsManager]: * Explicit value domain=true [2022-12-14 07:43:30,777 INFO L138 SettingsManager]: * Octagon Domain=false [2022-12-14 07:43:30,777 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-12-14 07:43:30,778 INFO L138 SettingsManager]: * Interval Domain=false [2022-12-14 07:43:30,778 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-14 07:43:30,778 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-14 07:43:30,779 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-14 07:43:30,779 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-14 07:43:30,779 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-12-14 07:43:30,779 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-14 07:43:30,779 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-14 07:43:30,780 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-14 07:43:30,780 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-12-14 07:43:30,780 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-12-14 07:43:30,780 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-12-14 07:43:30,780 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-14 07:43:30,780 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-12-14 07:43:30,781 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-12-14 07:43:30,781 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-12-14 07:43:30,781 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-14 07:43:30,781 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-14 07:43:30,781 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-14 07:43:30,782 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-14 07:43:30,782 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-14 07:43:30,782 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 07:43:30,782 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-14 07:43:30,782 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-14 07:43:30,783 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2022-12-14 07:43:30,783 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-12-14 07:43:30,783 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-12-14 07:43:30,783 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-12-14 07:43:30,783 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_4001d732-8413-45f9-b5b4-b6c09a8e87e7/bin/utaipan-gh47qXpMRh/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4001d732-8413-45f9-b5b4-b6c09a8e87e7/bin/utaipan-gh47qXpMRh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2b8fef41c3119c5f4fc9586ebd31a4ff7152be41d9f2f8da139e8cd34cf0da86 [2022-12-14 07:43:31,011 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-14 07:43:31,026 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-14 07:43:31,028 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-14 07:43:31,029 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-14 07:43:31,029 INFO L275 PluginConnector]: CDTParser initialized [2022-12-14 07:43:31,030 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4001d732-8413-45f9-b5b4-b6c09a8e87e7/bin/utaipan-gh47qXpMRh/../../sv-benchmarks/c/weaver/parallel-parallel-sum-1-dsl.wvr.c [2022-12-14 07:43:33,590 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-14 07:43:33,773 INFO L351 CDTParser]: Found 1 translation units. [2022-12-14 07:43:33,773 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4001d732-8413-45f9-b5b4-b6c09a8e87e7/sv-benchmarks/c/weaver/parallel-parallel-sum-1-dsl.wvr.c [2022-12-14 07:43:33,781 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4001d732-8413-45f9-b5b4-b6c09a8e87e7/bin/utaipan-gh47qXpMRh/data/e2e80c922/ae06a3351a6b4357a118ac95b48c81d5/FLAGe5aafd70f [2022-12-14 07:43:34,156 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4001d732-8413-45f9-b5b4-b6c09a8e87e7/bin/utaipan-gh47qXpMRh/data/e2e80c922/ae06a3351a6b4357a118ac95b48c81d5 [2022-12-14 07:43:34,158 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-14 07:43:34,159 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-14 07:43:34,160 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-14 07:43:34,160 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-14 07:43:34,163 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-14 07:43:34,163 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 07:43:34" (1/1) ... [2022-12-14 07:43:34,164 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@da04925 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 07:43:34, skipping insertion in model container [2022-12-14 07:43:34,164 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 07:43:34" (1/1) ... [2022-12-14 07:43:34,170 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-14 07:43:34,184 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-14 07:43:34,293 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-14 07:43:34,295 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-14 07:43:34,295 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-14 07:43:34,295 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-14 07:43:34,297 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-14 07:43:34,297 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-14 07:43:34,298 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-14 07:43:34,299 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-14 07:43:34,300 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-14 07:43:34,300 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-14 07:43:34,300 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-14 07:43:34,301 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-14 07:43:34,301 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-14 07:43:34,302 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-14 07:43:34,305 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-14 07:43:34,306 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-14 07:43:34,306 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-14 07:43:34,307 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-14 07:43:34,307 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-14 07:43:34,307 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-14 07:43:34,308 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-14 07:43:34,309 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-14 07:43:34,309 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-14 07:43:34,309 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-14 07:43:34,309 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-14 07:43:34,310 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-14 07:43:34,311 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-14 07:43:34,311 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-14 07:43:34,315 WARN L237 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_4001d732-8413-45f9-b5b4-b6c09a8e87e7/sv-benchmarks/c/weaver/parallel-parallel-sum-1-dsl.wvr.c[4372,4385] [2022-12-14 07:43:34,325 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 07:43:34,335 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2022-12-14 07:43:34,338 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-14 07:43:34,341 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-14 07:43:34,342 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-14 07:43:34,343 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-14 07:43:34,343 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-14 07:43:34,343 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-14 07:43:34,343 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-14 07:43:34,344 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-14 07:43:34,345 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-14 07:43:34,345 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-14 07:43:34,345 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-14 07:43:34,346 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-14 07:43:34,346 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-14 07:43:34,346 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-14 07:43:34,347 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-14 07:43:34,348 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-14 07:43:34,349 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-14 07:43:34,349 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-14 07:43:34,349 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-14 07:43:34,350 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-14 07:43:34,350 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-14 07:43:34,350 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-14 07:43:34,351 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-14 07:43:34,351 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-14 07:43:34,352 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-14 07:43:34,352 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-14 07:43:34,352 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-14 07:43:34,353 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-14 07:43:34,353 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-14 07:43:34,356 WARN L237 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_4001d732-8413-45f9-b5b4-b6c09a8e87e7/sv-benchmarks/c/weaver/parallel-parallel-sum-1-dsl.wvr.c[4372,4385] [2022-12-14 07:43:34,359 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 07:43:34,363 INFO L203 MainTranslator]: Completed pre-run [2022-12-14 07:43:34,372 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-14 07:43:34,373 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-14 07:43:34,373 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-14 07:43:34,373 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-14 07:43:34,374 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-14 07:43:34,374 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-14 07:43:34,374 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-14 07:43:34,375 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-14 07:43:34,375 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-14 07:43:34,375 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-14 07:43:34,375 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-14 07:43:34,376 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-14 07:43:34,377 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-14 07:43:34,377 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-14 07:43:34,378 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-14 07:43:34,379 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-14 07:43:34,379 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-14 07:43:34,379 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-14 07:43:34,379 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-14 07:43:34,380 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-14 07:43:34,380 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-14 07:43:34,381 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-14 07:43:34,381 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-14 07:43:34,381 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-14 07:43:34,381 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-14 07:43:34,382 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-14 07:43:34,382 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-14 07:43:34,382 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-14 07:43:34,386 WARN L237 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_4001d732-8413-45f9-b5b4-b6c09a8e87e7/sv-benchmarks/c/weaver/parallel-parallel-sum-1-dsl.wvr.c[4372,4385] [2022-12-14 07:43:34,389 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 07:43:34,401 INFO L208 MainTranslator]: Completed translation [2022-12-14 07:43:34,401 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 07:43:34 WrapperNode [2022-12-14 07:43:34,401 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-14 07:43:34,402 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-14 07:43:34,402 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-14 07:43:34,402 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-14 07:43:34,407 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 07:43:34" (1/1) ... [2022-12-14 07:43:34,416 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 07:43:34" (1/1) ... [2022-12-14 07:43:34,436 INFO L138 Inliner]: procedures = 31, calls = 95, calls flagged for inlining = 21, calls inlined = 27, statements flattened = 275 [2022-12-14 07:43:34,436 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-14 07:43:34,437 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-14 07:43:34,437 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-14 07:43:34,437 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-14 07:43:34,449 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 07:43:34" (1/1) ... [2022-12-14 07:43:34,450 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 07:43:34" (1/1) ... [2022-12-14 07:43:34,455 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 07:43:34" (1/1) ... [2022-12-14 07:43:34,456 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 07:43:34" (1/1) ... [2022-12-14 07:43:34,473 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 07:43:34" (1/1) ... [2022-12-14 07:43:34,478 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 07:43:34" (1/1) ... [2022-12-14 07:43:34,480 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 07:43:34" (1/1) ... [2022-12-14 07:43:34,482 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 07:43:34" (1/1) ... [2022-12-14 07:43:34,486 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-14 07:43:34,487 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-14 07:43:34,487 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-14 07:43:34,487 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-14 07:43:34,488 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 07:43:34" (1/1) ... [2022-12-14 07:43:34,494 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 07:43:34,503 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4001d732-8413-45f9-b5b4-b6c09a8e87e7/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 07:43:34,513 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4001d732-8413-45f9-b5b4-b6c09a8e87e7/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-14 07:43:34,516 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4001d732-8413-45f9-b5b4-b6c09a8e87e7/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-14 07:43:34,549 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-14 07:43:34,549 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-12-14 07:43:34,549 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-14 07:43:34,549 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2022-12-14 07:43:34,550 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-12-14 07:43:34,550 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-12-14 07:43:34,550 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-12-14 07:43:34,550 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-12-14 07:43:34,550 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-12-14 07:43:34,550 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-12-14 07:43:34,550 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2022-12-14 07:43:34,550 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2022-12-14 07:43:34,550 INFO L130 BoogieDeclarations]: Found specification of procedure thread5 [2022-12-14 07:43:34,550 INFO L138 BoogieDeclarations]: Found implementation of procedure thread5 [2022-12-14 07:43:34,550 INFO L130 BoogieDeclarations]: Found specification of procedure thread6 [2022-12-14 07:43:34,550 INFO L138 BoogieDeclarations]: Found implementation of procedure thread6 [2022-12-14 07:43:34,550 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-12-14 07:43:34,551 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-12-14 07:43:34,551 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-12-14 07:43:34,551 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-14 07:43:34,551 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-14 07:43:34,551 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-14 07:43:34,551 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2022-12-14 07:43:34,553 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-12-14 07:43:34,670 INFO L235 CfgBuilder]: Building ICFG [2022-12-14 07:43:34,672 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-14 07:43:35,281 INFO L276 CfgBuilder]: Performing block encoding [2022-12-14 07:43:35,427 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-14 07:43:35,427 INFO L300 CfgBuilder]: Removed 5 assume(true) statements. [2022-12-14 07:43:35,429 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 07:43:35 BoogieIcfgContainer [2022-12-14 07:43:35,429 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-14 07:43:35,430 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-14 07:43:35,431 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-14 07:43:35,433 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-14 07:43:35,433 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 07:43:34" (1/3) ... [2022-12-14 07:43:35,433 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@66c7740d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 07:43:35, skipping insertion in model container [2022-12-14 07:43:35,434 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 07:43:34" (2/3) ... [2022-12-14 07:43:35,434 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@66c7740d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 07:43:35, skipping insertion in model container [2022-12-14 07:43:35,434 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 07:43:35" (3/3) ... [2022-12-14 07:43:35,435 INFO L112 eAbstractionObserver]: Analyzing ICFG parallel-parallel-sum-1-dsl.wvr.c [2022-12-14 07:43:35,449 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-14 07:43:35,449 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 36 error locations. [2022-12-14 07:43:35,449 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-12-14 07:43:35,555 INFO L144 ThreadInstanceAdder]: Constructed 18 joinOtherThreadTransitions. [2022-12-14 07:43:35,591 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-12-14 07:43:35,605 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 293 places, 292 transitions, 656 flow [2022-12-14 07:43:35,608 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 293 places, 292 transitions, 656 flow [2022-12-14 07:43:35,609 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 293 places, 292 transitions, 656 flow [2022-12-14 07:43:35,721 INFO L130 PetriNetUnfolder]: 18/260 cut-off events. [2022-12-14 07:43:35,721 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2022-12-14 07:43:35,726 INFO L83 FinitePrefix]: Finished finitePrefix Result has 289 conditions, 260 events. 18/260 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 466 event pairs, 0 based on Foata normal form. 0/206 useless extension candidates. Maximal degree in co-relation 219. Up to 3 conditions per place. [2022-12-14 07:43:35,730 INFO L119 LiptonReduction]: Number of co-enabled transitions 11976 [2022-12-14 07:43:53,847 INFO L134 LiptonReduction]: Checked pairs total: 60123 [2022-12-14 07:43:53,847 INFO L136 LiptonReduction]: Total number of compositions: 234 [2022-12-14 07:43:53,853 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 131 places, 121 transitions, 314 flow [2022-12-14 07:43:57,474 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 113236 states, 108024 states have (on average 5.811541879582315) internal successors, (627786), 113235 states have internal predecessors, (627786), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 07:43:57,487 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-14 07:43:57,492 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@63b0c97, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-14 07:43:57,492 INFO L358 AbstractCegarLoop]: Starting to check reachability of 70 error locations. [2022-12-14 07:43:57,649 INFO L276 IsEmpty]: Start isEmpty. Operand has 113236 states, 108024 states have (on average 5.811541879582315) internal successors, (627786), 113235 states have internal predecessors, (627786), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 07:43:57,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2022-12-14 07:43:57,653 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 07:43:57,653 INFO L195 NwaCegarLoop]: trace histogram [1, 1] [2022-12-14 07:43:57,654 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 67 more)] === [2022-12-14 07:43:57,659 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 07:43:57,660 INFO L85 PathProgramCache]: Analyzing trace with hash 46034, now seen corresponding path program 1 times [2022-12-14 07:43:57,673 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 07:43:57,674 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [137493233] [2022-12-14 07:43:57,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 07:43:57,675 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 07:43:57,675 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4001d732-8413-45f9-b5b4-b6c09a8e87e7/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 07:43:57,676 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4001d732-8413-45f9-b5b4-b6c09a8e87e7/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-14 07:43:57,677 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4001d732-8413-45f9-b5b4-b6c09a8e87e7/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-12-14 07:43:57,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 07:43:57,772 INFO L263 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 8 conjunts are in the unsatisfiable core [2022-12-14 07:43:57,777 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 07:43:57,832 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:43:57,840 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:43:57,869 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-12-14 07:43:57,870 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 20 [2022-12-14 07:43:57,886 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 10 treesize of output 8 [2022-12-14 07:43:57,926 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 07:43:57,926 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 07:43:57,927 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 07:43:57,927 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [137493233] [2022-12-14 07:43:57,928 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [137493233] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 07:43:57,928 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 07:43:57,928 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-14 07:43:57,929 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1351587660] [2022-12-14 07:43:57,929 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 07:43:57,932 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 07:43:57,933 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 07:43:57,949 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 07:43:57,950 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 07:43:58,134 INFO L87 Difference]: Start difference. First operand has 113236 states, 108024 states have (on average 5.811541879582315) internal successors, (627786), 113235 states have internal predecessors, (627786), 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) Second operand has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 07:43:59,607 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 07:43:59,607 INFO L93 Difference]: Finished difference Result 85345 states and 465293 transitions. [2022-12-14 07:43:59,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 07:43:59,609 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 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 2 [2022-12-14 07:43:59,610 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 07:44:00,383 INFO L225 Difference]: With dead ends: 85345 [2022-12-14 07:44:00,383 INFO L226 Difference]: Without dead ends: 85345 [2022-12-14 07:44:00,384 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 07:44:00,388 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 92 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 80 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 92 SdHoareTripleChecker+Valid, 17 SdHoareTripleChecker+Invalid, 85 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 80 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-12-14 07:44:00,389 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [92 Valid, 17 Invalid, 85 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 80 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-12-14 07:44:00,671 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85345 states. [2022-12-14 07:44:02,970 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85345 to 85345. [2022-12-14 07:44:03,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 85345 states, 81816 states have (on average 5.6870660995404325) internal successors, (465293), 85344 states have internal predecessors, (465293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 07:44:03,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85345 states to 85345 states and 465293 transitions. [2022-12-14 07:44:03,901 INFO L78 Accepts]: Start accepts. Automaton has 85345 states and 465293 transitions. Word has length 2 [2022-12-14 07:44:03,902 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 07:44:03,902 INFO L495 AbstractCegarLoop]: Abstraction has 85345 states and 465293 transitions. [2022-12-14 07:44:03,902 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 07:44:03,902 INFO L276 IsEmpty]: Start isEmpty. Operand 85345 states and 465293 transitions. [2022-12-14 07:44:03,903 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2022-12-14 07:44:03,903 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 07:44:03,903 INFO L195 NwaCegarLoop]: trace histogram [1, 1] [2022-12-14 07:44:03,912 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4001d732-8413-45f9-b5b4-b6c09a8e87e7/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2022-12-14 07:44:04,104 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4001d732-8413-45f9-b5b4-b6c09a8e87e7/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 07:44:04,106 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 67 more)] === [2022-12-14 07:44:04,107 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 07:44:04,108 INFO L85 PathProgramCache]: Analyzing trace with hash 46035, now seen corresponding path program 1 times [2022-12-14 07:44:04,109 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 07:44:04,110 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1930184661] [2022-12-14 07:44:04,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 07:44:04,111 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 07:44:04,112 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4001d732-8413-45f9-b5b4-b6c09a8e87e7/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 07:44:04,115 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4001d732-8413-45f9-b5b4-b6c09a8e87e7/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-14 07:44:04,118 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4001d732-8413-45f9-b5b4-b6c09a8e87e7/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-12-14 07:44:04,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 07:44:04,261 INFO L263 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 6 conjunts are in the unsatisfiable core [2022-12-14 07:44:04,262 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 07:44:04,297 INFO L321 Elim1Store]: treesize reduction 46, result has 29.2 percent of original size [2022-12-14 07:44:04,297 INFO L350 Elim1Store]: Elim1 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 3 case distinctions, treesize of input 22 treesize of output 33 [2022-12-14 07:44:04,312 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 07:44:04,312 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 07:44:04,313 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 07:44:04,313 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1930184661] [2022-12-14 07:44:04,313 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1930184661] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 07:44:04,313 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 07:44:04,313 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-14 07:44:04,313 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1797265785] [2022-12-14 07:44:04,313 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 07:44:04,314 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 07:44:04,314 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 07:44:04,314 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 07:44:04,314 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 07:44:04,315 INFO L87 Difference]: Start difference. First operand 85345 states and 465293 transitions. Second operand has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 07:44:05,599 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 07:44:05,599 INFO L93 Difference]: Finished difference Result 59453 states and 309631 transitions. [2022-12-14 07:44:05,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 07:44:05,600 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 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 2 [2022-12-14 07:44:05,600 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 07:44:06,096 INFO L225 Difference]: With dead ends: 59453 [2022-12-14 07:44:06,096 INFO L226 Difference]: Without dead ends: 59453 [2022-12-14 07:44:06,097 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 07:44:06,098 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 86 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 161 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 86 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 167 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 161 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-12-14 07:44:06,098 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [86 Valid, 34 Invalid, 167 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 161 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-12-14 07:44:06,212 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59453 states. [2022-12-14 07:44:07,537 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59453 to 58119. [2022-12-14 07:44:07,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58119 states, 56191 states have (on average 5.435158655300671) internal successors, (305407), 58118 states have internal predecessors, (305407), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 07:44:07,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58119 states to 58119 states and 305407 transitions. [2022-12-14 07:44:07,886 INFO L78 Accepts]: Start accepts. Automaton has 58119 states and 305407 transitions. Word has length 2 [2022-12-14 07:44:07,886 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 07:44:07,886 INFO L495 AbstractCegarLoop]: Abstraction has 58119 states and 305407 transitions. [2022-12-14 07:44:07,886 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 07:44:07,886 INFO L276 IsEmpty]: Start isEmpty. Operand 58119 states and 305407 transitions. [2022-12-14 07:44:07,886 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2022-12-14 07:44:07,886 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 07:44:07,886 INFO L195 NwaCegarLoop]: trace histogram [1, 1] [2022-12-14 07:44:07,896 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4001d732-8413-45f9-b5b4-b6c09a8e87e7/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Ended with exit code 0 [2022-12-14 07:44:08,087 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4001d732-8413-45f9-b5b4-b6c09a8e87e7/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 07:44:08,089 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 67 more)] === [2022-12-14 07:44:08,090 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 07:44:08,091 INFO L85 PathProgramCache]: Analyzing trace with hash 45849, now seen corresponding path program 1 times [2022-12-14 07:44:08,092 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 07:44:08,093 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [721166181] [2022-12-14 07:44:08,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 07:44:08,094 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 07:44:08,095 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4001d732-8413-45f9-b5b4-b6c09a8e87e7/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 07:44:08,098 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4001d732-8413-45f9-b5b4-b6c09a8e87e7/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-14 07:44:08,101 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4001d732-8413-45f9-b5b4-b6c09a8e87e7/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2022-12-14 07:44:08,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 07:44:08,147 INFO L263 TraceCheckSpWp]: Trace formula consists of 43 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-14 07:44:08,148 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 07:44:08,183 INFO L321 Elim1Store]: treesize reduction 39, result has 40.0 percent of original size [2022-12-14 07:44:08,184 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 12 treesize of output 33 [2022-12-14 07:44:08,190 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 07:44:08,190 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 07:44:08,190 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 07:44:08,190 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [721166181] [2022-12-14 07:44:08,190 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [721166181] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 07:44:08,190 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 07:44:08,191 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-14 07:44:08,191 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1571153643] [2022-12-14 07:44:08,191 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 07:44:08,191 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 07:44:08,191 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 07:44:08,192 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 07:44:08,192 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 07:44:08,192 INFO L87 Difference]: Start difference. First operand 58119 states and 305407 transitions. Second operand has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 07:44:09,331 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 07:44:09,331 INFO L93 Difference]: Finished difference Result 58118 states and 305406 transitions. [2022-12-14 07:44:09,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 07:44:09,332 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 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 2 [2022-12-14 07:44:09,332 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 07:44:09,792 INFO L225 Difference]: With dead ends: 58118 [2022-12-14 07:44:09,792 INFO L226 Difference]: Without dead ends: 58118 [2022-12-14 07:44:09,792 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 07:44:09,793 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 79 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 151 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 79 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 155 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 151 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-12-14 07:44:09,793 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [79 Valid, 34 Invalid, 155 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 151 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-12-14 07:44:09,938 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58118 states. [2022-12-14 07:44:11,303 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58118 to 58118. [2022-12-14 07:44:11,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58118 states, 56191 states have (on average 5.435140858856401) internal successors, (305406), 58117 states have internal predecessors, (305406), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 07:44:11,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58118 states to 58118 states and 305406 transitions. [2022-12-14 07:44:11,818 INFO L78 Accepts]: Start accepts. Automaton has 58118 states and 305406 transitions. Word has length 2 [2022-12-14 07:44:11,818 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 07:44:11,818 INFO L495 AbstractCegarLoop]: Abstraction has 58118 states and 305406 transitions. [2022-12-14 07:44:11,819 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 07:44:11,819 INFO L276 IsEmpty]: Start isEmpty. Operand 58118 states and 305406 transitions. [2022-12-14 07:44:11,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2022-12-14 07:44:11,819 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 07:44:11,819 INFO L195 NwaCegarLoop]: trace histogram [1, 1] [2022-12-14 07:44:11,826 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4001d732-8413-45f9-b5b4-b6c09a8e87e7/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Ended with exit code 0 [2022-12-14 07:44:12,019 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4001d732-8413-45f9-b5b4-b6c09a8e87e7/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 07:44:12,020 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 67 more)] === [2022-12-14 07:44:12,022 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 07:44:12,022 INFO L85 PathProgramCache]: Analyzing trace with hash 45850, now seen corresponding path program 1 times [2022-12-14 07:44:12,022 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 07:44:12,023 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1286983260] [2022-12-14 07:44:12,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 07:44:12,023 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 07:44:12,024 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4001d732-8413-45f9-b5b4-b6c09a8e87e7/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 07:44:12,026 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4001d732-8413-45f9-b5b4-b6c09a8e87e7/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-14 07:44:12,029 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4001d732-8413-45f9-b5b4-b6c09a8e87e7/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2022-12-14 07:44:12,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 07:44:12,175 INFO L263 TraceCheckSpWp]: Trace formula consists of 43 conjuncts, 9 conjunts are in the unsatisfiable core [2022-12-14 07:44:12,176 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 07:44:12,229 INFO L321 Elim1Store]: treesize reduction 37, result has 37.3 percent of original size [2022-12-14 07:44:12,229 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 14 treesize of output 29 [2022-12-14 07:44:12,252 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 07:44:12,253 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 07:44:12,253 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 07:44:12,253 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1286983260] [2022-12-14 07:44:12,253 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1286983260] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 07:44:12,253 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 07:44:12,253 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-14 07:44:12,253 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1697933707] [2022-12-14 07:44:12,254 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 07:44:12,254 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 07:44:12,254 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 07:44:12,254 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 07:44:12,254 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 07:44:12,254 INFO L87 Difference]: Start difference. First operand 58118 states and 305406 transitions. Second operand has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 07:44:13,242 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 07:44:13,242 INFO L93 Difference]: Finished difference Result 58128 states and 305426 transitions. [2022-12-14 07:44:13,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 07:44:13,243 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 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 2 [2022-12-14 07:44:13,243 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 07:44:13,646 INFO L225 Difference]: With dead ends: 58128 [2022-12-14 07:44:13,646 INFO L226 Difference]: Without dead ends: 58128 [2022-12-14 07:44:13,646 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 07:44:13,648 INFO L413 NwaCegarLoop]: 30 mSDtfsCounter, 9 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 142 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 47 SdHoareTripleChecker+Invalid, 142 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 142 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-12-14 07:44:13,648 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 47 Invalid, 142 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 142 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-12-14 07:44:13,830 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58128 states. [2022-12-14 07:44:15,264 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58128 to 58119. [2022-12-14 07:44:15,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58119 states, 56192 states have (on average 5.43507972665148) internal successors, (305408), 58118 states have internal predecessors, (305408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 07:44:15,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58119 states to 58119 states and 305408 transitions. [2022-12-14 07:44:15,810 INFO L78 Accepts]: Start accepts. Automaton has 58119 states and 305408 transitions. Word has length 2 [2022-12-14 07:44:15,811 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 07:44:15,811 INFO L495 AbstractCegarLoop]: Abstraction has 58119 states and 305408 transitions. [2022-12-14 07:44:15,811 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 07:44:15,811 INFO L276 IsEmpty]: Start isEmpty. Operand 58119 states and 305408 transitions. [2022-12-14 07:44:15,811 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2022-12-14 07:44:15,811 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 07:44:15,811 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2022-12-14 07:44:15,820 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4001d732-8413-45f9-b5b4-b6c09a8e87e7/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Ended with exit code 0 [2022-12-14 07:44:16,012 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4001d732-8413-45f9-b5b4-b6c09a8e87e7/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 07:44:16,013 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 67 more)] === [2022-12-14 07:44:16,014 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 07:44:16,015 INFO L85 PathProgramCache]: Analyzing trace with hash 1427706, now seen corresponding path program 1 times [2022-12-14 07:44:16,015 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 07:44:16,016 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1520767748] [2022-12-14 07:44:16,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 07:44:16,016 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 07:44:16,017 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4001d732-8413-45f9-b5b4-b6c09a8e87e7/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 07:44:16,019 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4001d732-8413-45f9-b5b4-b6c09a8e87e7/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-14 07:44:16,022 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4001d732-8413-45f9-b5b4-b6c09a8e87e7/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2022-12-14 07:44:16,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 07:44:16,207 INFO L263 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 11 conjunts are in the unsatisfiable core [2022-12-14 07:44:16,209 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 07:44:16,267 INFO L321 Elim1Store]: treesize reduction 37, result has 37.3 percent of original size [2022-12-14 07:44:16,267 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 14 treesize of output 29 [2022-12-14 07:44:16,314 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 07:44:16,315 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 07:44:16,487 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 07:44:16,487 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 07:44:16,487 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1520767748] [2022-12-14 07:44:16,487 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1520767748] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 07:44:16,488 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [538322390] [2022-12-14 07:44:16,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 07:44:16,488 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-12-14 07:44:16,488 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4001d732-8413-45f9-b5b4-b6c09a8e87e7/bin/utaipan-gh47qXpMRh/cvc4 [2022-12-14 07:44:16,489 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4001d732-8413-45f9-b5b4-b6c09a8e87e7/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-12-14 07:44:16,490 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4001d732-8413-45f9-b5b4-b6c09a8e87e7/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (7)] Waiting until timeout for monitored process [2022-12-14 07:44:16,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 07:44:16,637 INFO L263 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 11 conjunts are in the unsatisfiable core [2022-12-14 07:44:16,638 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 07:44:16,695 INFO L321 Elim1Store]: treesize reduction 37, result has 37.3 percent of original size [2022-12-14 07:44:16,695 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 14 treesize of output 29 [2022-12-14 07:44:16,720 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 07:44:16,720 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 07:44:16,776 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 07:44:16,777 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [538322390] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 07:44:16,777 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [604812869] [2022-12-14 07:44:16,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 07:44:16,777 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 07:44:16,777 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4001d732-8413-45f9-b5b4-b6c09a8e87e7/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 07:44:16,778 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4001d732-8413-45f9-b5b4-b6c09a8e87e7/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 07:44:16,779 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4001d732-8413-45f9-b5b4-b6c09a8e87e7/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-12-14 07:44:16,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 07:44:16,835 INFO L263 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 10 conjunts are in the unsatisfiable core [2022-12-14 07:44:16,837 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 07:44:16,885 INFO L321 Elim1Store]: treesize reduction 37, result has 37.3 percent of original size [2022-12-14 07:44:16,885 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 14 treesize of output 29 [2022-12-14 07:44:16,918 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 07:44:16,918 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 07:44:17,026 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 07:44:17,027 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [604812869] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 07:44:17,027 INFO L184 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2022-12-14 07:44:17,027 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2, 2, 2, 2] total 6 [2022-12-14 07:44:17,027 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [412715773] [2022-12-14 07:44:17,027 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2022-12-14 07:44:17,027 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-12-14 07:44:17,028 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 07:44:17,028 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-12-14 07:44:17,028 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2022-12-14 07:44:17,028 INFO L87 Difference]: Start difference. First operand 58119 states and 305408 transitions. Second operand has 8 states, 7 states have (on average 1.4285714285714286) internal successors, (10), 7 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 07:44:18,992 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 07:44:18,993 INFO L93 Difference]: Finished difference Result 58159 states and 305490 transitions. [2022-12-14 07:44:18,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-14 07:44:18,994 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 1.4285714285714286) internal successors, (10), 7 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2022-12-14 07:44:18,994 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 07:44:19,395 INFO L225 Difference]: With dead ends: 58159 [2022-12-14 07:44:19,395 INFO L226 Difference]: Without dead ends: 58159 [2022-12-14 07:44:19,395 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=40, Invalid=50, Unknown=0, NotChecked=0, Total=90 [2022-12-14 07:44:19,396 INFO L413 NwaCegarLoop]: 31 mSDtfsCounter, 55 mSDsluCounter, 72 mSDsCounter, 0 mSdLazyCounter, 404 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 103 SdHoareTripleChecker+Invalid, 411 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 404 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-12-14 07:44:19,396 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [55 Valid, 103 Invalid, 411 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 404 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-12-14 07:44:19,536 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58159 states. [2022-12-14 07:44:21,186 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58159 to 58122. [2022-12-14 07:44:21,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58122 states, 56195 states have (on average 5.434896343091022) internal successors, (305414), 58121 states have internal predecessors, (305414), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 07:44:21,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58122 states to 58122 states and 305414 transitions. [2022-12-14 07:44:21,528 INFO L78 Accepts]: Start accepts. Automaton has 58122 states and 305414 transitions. Word has length 3 [2022-12-14 07:44:21,528 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 07:44:21,528 INFO L495 AbstractCegarLoop]: Abstraction has 58122 states and 305414 transitions. [2022-12-14 07:44:21,528 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 1.4285714285714286) internal successors, (10), 7 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 07:44:21,528 INFO L276 IsEmpty]: Start isEmpty. Operand 58122 states and 305414 transitions. [2022-12-14 07:44:21,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-12-14 07:44:21,529 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 07:44:21,529 INFO L195 NwaCegarLoop]: trace histogram [4, 1, 1] [2022-12-14 07:44:21,537 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4001d732-8413-45f9-b5b4-b6c09a8e87e7/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Ended with exit code 0 [2022-12-14 07:44:21,735 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4001d732-8413-45f9-b5b4-b6c09a8e87e7/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (7)] Ended with exit code 0 [2022-12-14 07:44:21,944 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4001d732-8413-45f9-b5b4-b6c09a8e87e7/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-12-14 07:44:22,130 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4001d732-8413-45f9-b5b4-b6c09a8e87e7/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4001d732-8413-45f9-b5b4-b6c09a8e87e7/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4001d732-8413-45f9-b5b4-b6c09a8e87e7/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 07:44:22,131 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 67 more)] === [2022-12-14 07:44:22,131 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 07:44:22,132 INFO L85 PathProgramCache]: Analyzing trace with hash -410572006, now seen corresponding path program 2 times [2022-12-14 07:44:22,133 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 07:44:22,133 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1415503589] [2022-12-14 07:44:22,133 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-14 07:44:22,134 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 07:44:22,134 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4001d732-8413-45f9-b5b4-b6c09a8e87e7/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 07:44:22,137 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4001d732-8413-45f9-b5b4-b6c09a8e87e7/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-14 07:44:22,139 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4001d732-8413-45f9-b5b4-b6c09a8e87e7/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2022-12-14 07:44:22,210 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-14 07:44:22,210 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-14 07:44:22,213 INFO L263 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 13 conjunts are in the unsatisfiable core [2022-12-14 07:44:22,215 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 07:44:22,265 INFO L321 Elim1Store]: treesize reduction 37, result has 37.3 percent of original size [2022-12-14 07:44:22,265 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 14 treesize of output 29 [2022-12-14 07:44:22,364 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 07:44:22,364 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 07:44:22,925 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 07:44:22,925 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 07:44:22,925 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1415503589] [2022-12-14 07:44:22,925 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1415503589] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 07:44:22,925 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1920171647] [2022-12-14 07:44:22,925 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-14 07:44:22,925 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-12-14 07:44:22,926 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4001d732-8413-45f9-b5b4-b6c09a8e87e7/bin/utaipan-gh47qXpMRh/cvc4 [2022-12-14 07:44:22,926 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4001d732-8413-45f9-b5b4-b6c09a8e87e7/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-12-14 07:44:22,927 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4001d732-8413-45f9-b5b4-b6c09a8e87e7/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (10)] Waiting until timeout for monitored process [2022-12-14 07:44:23,137 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-14 07:44:23,137 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-14 07:44:23,140 INFO L263 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 14 conjunts are in the unsatisfiable core [2022-12-14 07:44:23,141 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 07:44:23,191 INFO L321 Elim1Store]: treesize reduction 37, result has 37.3 percent of original size [2022-12-14 07:44:23,192 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 14 treesize of output 29 [2022-12-14 07:44:23,271 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 07:44:23,271 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 07:44:24,034 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 07:44:24,034 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1920171647] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 07:44:24,034 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [295240159] [2022-12-14 07:44:24,034 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-14 07:44:24,034 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 07:44:24,034 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4001d732-8413-45f9-b5b4-b6c09a8e87e7/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 07:44:24,035 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4001d732-8413-45f9-b5b4-b6c09a8e87e7/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 07:44:24,036 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4001d732-8413-45f9-b5b4-b6c09a8e87e7/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-12-14 07:44:24,128 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-14 07:44:24,128 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-14 07:44:24,132 INFO L263 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 14 conjunts are in the unsatisfiable core [2022-12-14 07:44:24,134 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 07:44:24,191 INFO L321 Elim1Store]: treesize reduction 37, result has 37.3 percent of original size [2022-12-14 07:44:24,191 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 14 treesize of output 29 [2022-12-14 07:44:24,252 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 07:44:24,252 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 07:44:24,375 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 07:44:24,375 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [295240159] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 07:44:24,375 INFO L184 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2022-12-14 07:44:24,375 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5, 5, 5, 5] total 15 [2022-12-14 07:44:24,375 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1920464519] [2022-12-14 07:44:24,375 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2022-12-14 07:44:24,375 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-12-14 07:44:24,375 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 07:44:24,376 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-12-14 07:44:24,376 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=182, Unknown=0, NotChecked=0, Total=272 [2022-12-14 07:44:24,376 INFO L87 Difference]: Start difference. First operand 58122 states and 305414 transitions. Second operand has 17 states, 16 states have (on average 1.1875) internal successors, (19), 16 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 07:44:31,611 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 07:44:31,611 INFO L93 Difference]: Finished difference Result 58229 states and 305632 transitions. [2022-12-14 07:44:31,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-12-14 07:44:31,612 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 1.1875) internal successors, (19), 16 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2022-12-14 07:44:31,612 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 07:44:32,143 INFO L225 Difference]: With dead ends: 58229 [2022-12-14 07:44:32,143 INFO L226 Difference]: Without dead ends: 58229 [2022-12-14 07:44:32,143 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=178, Invalid=328, Unknown=0, NotChecked=0, Total=506 [2022-12-14 07:44:32,144 INFO L413 NwaCegarLoop]: 37 mSDtfsCounter, 435 mSDsluCounter, 204 mSDsCounter, 0 mSdLazyCounter, 1030 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 435 SdHoareTripleChecker+Valid, 241 SdHoareTripleChecker+Invalid, 1072 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 1030 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.1s IncrementalHoareTripleChecker+Time [2022-12-14 07:44:32,144 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [435 Valid, 241 Invalid, 1072 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 1030 Invalid, 0 Unknown, 0 Unchecked, 5.1s Time] [2022-12-14 07:44:32,282 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58229 states. [2022-12-14 07:44:33,643 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58229 to 58128. [2022-12-14 07:44:33,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58128 states, 56201 states have (on average 5.434529634704009) internal successors, (305426), 58127 states have internal predecessors, (305426), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 07:44:34,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58128 states to 58128 states and 305426 transitions. [2022-12-14 07:44:34,171 INFO L78 Accepts]: Start accepts. Automaton has 58128 states and 305426 transitions. Word has length 6 [2022-12-14 07:44:34,172 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 07:44:34,172 INFO L495 AbstractCegarLoop]: Abstraction has 58128 states and 305426 transitions. [2022-12-14 07:44:34,172 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 16 states have (on average 1.1875) internal successors, (19), 16 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 07:44:34,172 INFO L276 IsEmpty]: Start isEmpty. Operand 58128 states and 305426 transitions. [2022-12-14 07:44:34,172 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-12-14 07:44:34,172 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 07:44:34,172 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-12-14 07:44:34,194 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4001d732-8413-45f9-b5b4-b6c09a8e87e7/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Ended with exit code 0 [2022-12-14 07:44:34,388 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4001d732-8413-45f9-b5b4-b6c09a8e87e7/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2022-12-14 07:44:34,579 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4001d732-8413-45f9-b5b4-b6c09a8e87e7/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (10)] Ended with exit code 0 [2022-12-14 07:44:34,774 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4001d732-8413-45f9-b5b4-b6c09a8e87e7/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4001d732-8413-45f9-b5b4-b6c09a8e87e7/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4001d732-8413-45f9-b5b4-b6c09a8e87e7/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt [2022-12-14 07:44:34,774 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 67 more)] === [2022-12-14 07:44:34,776 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 07:44:34,777 INFO L85 PathProgramCache]: Analyzing trace with hash -401720535, now seen corresponding path program 1 times [2022-12-14 07:44:34,777 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 07:44:34,777 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [457656922] [2022-12-14 07:44:34,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 07:44:34,778 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 07:44:34,778 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4001d732-8413-45f9-b5b4-b6c09a8e87e7/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 07:44:34,781 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4001d732-8413-45f9-b5b4-b6c09a8e87e7/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-14 07:44:34,784 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4001d732-8413-45f9-b5b4-b6c09a8e87e7/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2022-12-14 07:44:34,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 07:44:34,856 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 8 conjunts are in the unsatisfiable core [2022-12-14 07:44:34,858 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 07:44:34,888 INFO L321 Elim1Store]: treesize reduction 50, result has 23.1 percent of original size [2022-12-14 07:44:34,888 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 12 treesize of output 22 [2022-12-14 07:44:34,905 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 07:44:34,906 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 07:44:34,906 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 07:44:34,906 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [457656922] [2022-12-14 07:44:34,906 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [457656922] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 07:44:34,906 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 07:44:34,906 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-14 07:44:34,906 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [495518130] [2022-12-14 07:44:34,906 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 07:44:34,906 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 07:44:34,906 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 07:44:34,907 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 07:44:34,907 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 07:44:34,907 INFO L87 Difference]: Start difference. First operand 58128 states and 305426 transitions. Second operand has 3 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 07:44:35,925 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 07:44:35,925 INFO L93 Difference]: Finished difference Result 59289 states and 309731 transitions. [2022-12-14 07:44:35,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 07:44:35,925 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2022-12-14 07:44:35,926 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 07:44:36,238 INFO L225 Difference]: With dead ends: 59289 [2022-12-14 07:44:36,239 INFO L226 Difference]: Without dead ends: 59289 [2022-12-14 07:44:36,239 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 07:44:36,239 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 79 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 160 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 79 SdHoareTripleChecker+Valid, 33 SdHoareTripleChecker+Invalid, 167 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 160 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-12-14 07:44:36,239 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [79 Valid, 33 Invalid, 167 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 160 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-12-14 07:44:36,355 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59289 states. [2022-12-14 07:44:37,699 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59289 to 58459. [2022-12-14 07:44:37,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58459 states, 56572 states have (on average 5.424786113271583) internal successors, (306891), 58458 states have internal predecessors, (306891), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 07:44:38,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58459 states to 58459 states and 306891 transitions. [2022-12-14 07:44:38,044 INFO L78 Accepts]: Start accepts. Automaton has 58459 states and 306891 transitions. Word has length 6 [2022-12-14 07:44:38,044 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 07:44:38,044 INFO L495 AbstractCegarLoop]: Abstraction has 58459 states and 306891 transitions. [2022-12-14 07:44:38,044 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 07:44:38,044 INFO L276 IsEmpty]: Start isEmpty. Operand 58459 states and 306891 transitions. [2022-12-14 07:44:38,044 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-12-14 07:44:38,044 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 07:44:38,044 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-12-14 07:44:38,068 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4001d732-8413-45f9-b5b4-b6c09a8e87e7/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2022-12-14 07:44:38,245 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4001d732-8413-45f9-b5b4-b6c09a8e87e7/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 07:44:38,246 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 67 more)] === [2022-12-14 07:44:38,247 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 07:44:38,247 INFO L85 PathProgramCache]: Analyzing trace with hash -401720534, now seen corresponding path program 1 times [2022-12-14 07:44:38,248 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 07:44:38,248 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1038696971] [2022-12-14 07:44:38,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 07:44:38,249 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 07:44:38,250 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4001d732-8413-45f9-b5b4-b6c09a8e87e7/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 07:44:38,252 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4001d732-8413-45f9-b5b4-b6c09a8e87e7/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-14 07:44:38,255 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4001d732-8413-45f9-b5b4-b6c09a8e87e7/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2022-12-14 07:44:38,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 07:44:38,324 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 9 conjunts are in the unsatisfiable core [2022-12-14 07:44:38,326 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 07:44:38,334 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:44:38,334 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:44:38,347 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-12-14 07:44:38,347 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 20 [2022-12-14 07:44:38,352 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 14 treesize of output 12 [2022-12-14 07:44:38,373 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 07:44:38,373 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 07:44:38,373 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 07:44:38,373 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1038696971] [2022-12-14 07:44:38,373 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1038696971] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 07:44:38,373 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 07:44:38,373 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-14 07:44:38,374 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1514149622] [2022-12-14 07:44:38,374 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 07:44:38,374 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 07:44:38,374 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 07:44:38,374 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 07:44:38,374 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 07:44:38,374 INFO L87 Difference]: Start difference. First operand 58459 states and 306891 transitions. Second operand has 3 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 07:44:39,122 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 07:44:39,122 INFO L93 Difference]: Finished difference Result 58125 states and 305586 transitions. [2022-12-14 07:44:39,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 07:44:39,123 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2022-12-14 07:44:39,123 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 07:44:39,443 INFO L225 Difference]: With dead ends: 58125 [2022-12-14 07:44:39,443 INFO L226 Difference]: Without dead ends: 58125 [2022-12-14 07:44:39,443 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 07:44:39,443 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 84 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 77 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 84 SdHoareTripleChecker+Valid, 16 SdHoareTripleChecker+Invalid, 82 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 77 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-14 07:44:39,444 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [84 Valid, 16 Invalid, 82 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 77 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-14 07:44:39,561 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58125 states. [2022-12-14 07:44:40,884 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58125 to 58125. [2022-12-14 07:44:40,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58125 states, 56320 states have (on average 5.425887784090909) internal successors, (305586), 58124 states have internal predecessors, (305586), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 07:44:41,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58125 states to 58125 states and 305586 transitions. [2022-12-14 07:44:41,228 INFO L78 Accepts]: Start accepts. Automaton has 58125 states and 305586 transitions. Word has length 6 [2022-12-14 07:44:41,228 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 07:44:41,228 INFO L495 AbstractCegarLoop]: Abstraction has 58125 states and 305586 transitions. [2022-12-14 07:44:41,228 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 07:44:41,228 INFO L276 IsEmpty]: Start isEmpty. Operand 58125 states and 305586 transitions. [2022-12-14 07:44:41,228 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-12-14 07:44:41,229 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 07:44:41,229 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 07:44:41,242 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4001d732-8413-45f9-b5b4-b6c09a8e87e7/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Ended with exit code 0 [2022-12-14 07:44:41,429 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4001d732-8413-45f9-b5b4-b6c09a8e87e7/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 07:44:41,430 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 67 more)] === [2022-12-14 07:44:41,430 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 07:44:41,431 INFO L85 PathProgramCache]: Analyzing trace with hash 236828986, now seen corresponding path program 1 times [2022-12-14 07:44:41,431 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 07:44:41,431 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [369528218] [2022-12-14 07:44:41,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 07:44:41,432 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 07:44:41,432 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4001d732-8413-45f9-b5b4-b6c09a8e87e7/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 07:44:41,435 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4001d732-8413-45f9-b5b4-b6c09a8e87e7/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-14 07:44:41,438 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4001d732-8413-45f9-b5b4-b6c09a8e87e7/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2022-12-14 07:44:41,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 07:44:41,507 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 5 conjunts are in the unsatisfiable core [2022-12-14 07:44:41,508 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 07:44:41,511 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2022-12-14 07:44:41,531 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-12-14 07:44:41,531 INFO L350 Elim1Store]: Elim1 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 2 case distinctions, treesize of input 19 treesize of output 27 [2022-12-14 07:44:41,537 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 07:44:41,537 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 07:44:41,537 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 07:44:41,537 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [369528218] [2022-12-14 07:44:41,537 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [369528218] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 07:44:41,537 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 07:44:41,537 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-14 07:44:41,537 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1669348371] [2022-12-14 07:44:41,537 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 07:44:41,538 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 07:44:41,538 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 07:44:41,538 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 07:44:41,538 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 07:44:41,538 INFO L87 Difference]: Start difference. First operand 58125 states and 305586 transitions. Second operand has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 07:44:42,395 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 07:44:42,395 INFO L93 Difference]: Finished difference Result 50269 states and 257820 transitions. [2022-12-14 07:44:42,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 07:44:42,395 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2022-12-14 07:44:42,395 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 07:44:42,648 INFO L225 Difference]: With dead ends: 50269 [2022-12-14 07:44:42,648 INFO L226 Difference]: Without dead ends: 50269 [2022-12-14 07:44:42,648 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 07:44:42,649 INFO L413 NwaCegarLoop]: 35 mSDtfsCounter, 70 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 179 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 70 SdHoareTripleChecker+Valid, 50 SdHoareTripleChecker+Invalid, 184 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 179 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-12-14 07:44:42,649 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [70 Valid, 50 Invalid, 184 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 179 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-12-14 07:44:42,750 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50269 states. [2022-12-14 07:44:43,920 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50269 to 49741. [2022-12-14 07:44:43,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49741 states, 48336 states have (on average 5.300190334326382) internal successors, (256190), 49740 states have internal predecessors, (256190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 07:44:44,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49741 states to 49741 states and 256190 transitions. [2022-12-14 07:44:44,224 INFO L78 Accepts]: Start accepts. Automaton has 49741 states and 256190 transitions. Word has length 8 [2022-12-14 07:44:44,224 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 07:44:44,224 INFO L495 AbstractCegarLoop]: Abstraction has 49741 states and 256190 transitions. [2022-12-14 07:44:44,224 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 07:44:44,224 INFO L276 IsEmpty]: Start isEmpty. Operand 49741 states and 256190 transitions. [2022-12-14 07:44:44,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-12-14 07:44:44,225 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 07:44:44,225 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 07:44:44,236 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4001d732-8413-45f9-b5b4-b6c09a8e87e7/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Ended with exit code 0 [2022-12-14 07:44:44,425 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4001d732-8413-45f9-b5b4-b6c09a8e87e7/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 07:44:44,425 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 67 more)] === [2022-12-14 07:44:44,426 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 07:44:44,426 INFO L85 PathProgramCache]: Analyzing trace with hash 236828987, now seen corresponding path program 1 times [2022-12-14 07:44:44,426 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 07:44:44,426 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [459343046] [2022-12-14 07:44:44,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 07:44:44,426 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 07:44:44,426 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4001d732-8413-45f9-b5b4-b6c09a8e87e7/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 07:44:44,427 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4001d732-8413-45f9-b5b4-b6c09a8e87e7/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-14 07:44:44,428 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4001d732-8413-45f9-b5b4-b6c09a8e87e7/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2022-12-14 07:44:44,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 07:44:44,518 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 8 conjunts are in the unsatisfiable core [2022-12-14 07:44:44,519 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 07:44:44,525 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2022-12-14 07:44:44,529 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-12-14 07:44:44,547 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:44:44,548 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2022-12-14 07:44:44,556 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-12-14 07:44:44,556 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2022-12-14 07:44:44,574 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 07:44:44,574 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 07:44:44,574 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 07:44:44,575 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [459343046] [2022-12-14 07:44:44,575 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [459343046] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 07:44:44,575 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 07:44:44,575 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 07:44:44,575 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [338990168] [2022-12-14 07:44:44,575 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 07:44:44,575 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-14 07:44:44,575 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 07:44:44,576 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-14 07:44:44,576 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-12-14 07:44:44,576 INFO L87 Difference]: Start difference. First operand 49741 states and 256190 transitions. Second operand has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 07:44:45,587 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 07:44:45,587 INFO L93 Difference]: Finished difference Result 41273 states and 205862 transitions. [2022-12-14 07:44:45,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-14 07:44:45,587 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2022-12-14 07:44:45,587 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 07:44:45,779 INFO L225 Difference]: With dead ends: 41273 [2022-12-14 07:44:45,779 INFO L226 Difference]: Without dead ends: 41273 [2022-12-14 07:44:45,780 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-12-14 07:44:45,780 INFO L413 NwaCegarLoop]: 29 mSDtfsCounter, 213 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 222 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 213 SdHoareTripleChecker+Valid, 49 SdHoareTripleChecker+Invalid, 234 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 222 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-12-14 07:44:45,780 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [213 Valid, 49 Invalid, 234 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 222 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-12-14 07:44:45,858 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41273 states. [2022-12-14 07:44:46,905 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41273 to 40901. [2022-12-14 07:44:46,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40901 states, 39916 states have (on average 5.128620102214651) internal successors, (204714), 40900 states have internal predecessors, (204714), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 07:44:47,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40901 states to 40901 states and 204714 transitions. [2022-12-14 07:44:47,189 INFO L78 Accepts]: Start accepts. Automaton has 40901 states and 204714 transitions. Word has length 8 [2022-12-14 07:44:47,190 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 07:44:47,190 INFO L495 AbstractCegarLoop]: Abstraction has 40901 states and 204714 transitions. [2022-12-14 07:44:47,190 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 07:44:47,190 INFO L276 IsEmpty]: Start isEmpty. Operand 40901 states and 204714 transitions. [2022-12-14 07:44:47,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-12-14 07:44:47,190 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 07:44:47,190 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 07:44:47,198 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4001d732-8413-45f9-b5b4-b6c09a8e87e7/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2022-12-14 07:44:47,391 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4001d732-8413-45f9-b5b4-b6c09a8e87e7/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 07:44:47,391 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting thread2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 67 more)] === [2022-12-14 07:44:47,392 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 07:44:47,392 INFO L85 PathProgramCache]: Analyzing trace with hash -40575119, now seen corresponding path program 1 times [2022-12-14 07:44:47,393 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 07:44:47,393 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1129079881] [2022-12-14 07:44:47,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 07:44:47,394 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 07:44:47,394 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4001d732-8413-45f9-b5b4-b6c09a8e87e7/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 07:44:47,397 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4001d732-8413-45f9-b5b4-b6c09a8e87e7/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-14 07:44:47,399 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4001d732-8413-45f9-b5b4-b6c09a8e87e7/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2022-12-14 07:44:47,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 07:44:47,524 INFO L263 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 11 conjunts are in the unsatisfiable core [2022-12-14 07:44:47,525 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 07:44:47,596 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 07:44:47,596 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 07:44:47,596 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 07:44:47,596 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1129079881] [2022-12-14 07:44:47,596 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1129079881] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 07:44:47,596 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 07:44:47,596 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 07:44:47,596 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1601256546] [2022-12-14 07:44:47,596 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 07:44:47,597 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-14 07:44:47,597 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 07:44:47,597 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-14 07:44:47,597 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-12-14 07:44:47,597 INFO L87 Difference]: Start difference. First operand 40901 states and 204714 transitions. Second operand has 5 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 07:44:48,553 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 07:44:48,553 INFO L93 Difference]: Finished difference Result 55965 states and 268898 transitions. [2022-12-14 07:44:48,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-14 07:44:48,554 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 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 10 [2022-12-14 07:44:48,554 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 07:44:48,825 INFO L225 Difference]: With dead ends: 55965 [2022-12-14 07:44:48,825 INFO L226 Difference]: Without dead ends: 55965 [2022-12-14 07:44:48,826 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-12-14 07:44:48,826 INFO L413 NwaCegarLoop]: 49 mSDtfsCounter, 224 mSDsluCounter, 83 mSDsCounter, 0 mSdLazyCounter, 232 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 224 SdHoareTripleChecker+Valid, 132 SdHoareTripleChecker+Invalid, 237 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 232 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-12-14 07:44:48,826 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [224 Valid, 132 Invalid, 237 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 232 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-12-14 07:44:48,934 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55965 states. [2022-12-14 07:44:50,085 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55965 to 50196. [2022-12-14 07:44:50,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50196 states, 49211 states have (on average 5.022535611956676) internal successors, (247164), 50195 states have internal predecessors, (247164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 07:44:50,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50196 states to 50196 states and 247164 transitions. [2022-12-14 07:44:50,498 INFO L78 Accepts]: Start accepts. Automaton has 50196 states and 247164 transitions. Word has length 10 [2022-12-14 07:44:50,498 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 07:44:50,498 INFO L495 AbstractCegarLoop]: Abstraction has 50196 states and 247164 transitions. [2022-12-14 07:44:50,498 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 07:44:50,498 INFO L276 IsEmpty]: Start isEmpty. Operand 50196 states and 247164 transitions. [2022-12-14 07:44:50,499 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-12-14 07:44:50,499 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 07:44:50,499 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 07:44:50,511 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4001d732-8413-45f9-b5b4-b6c09a8e87e7/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Ended with exit code 0 [2022-12-14 07:44:50,700 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4001d732-8413-45f9-b5b4-b6c09a8e87e7/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 07:44:50,700 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting thread2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 67 more)] === [2022-12-14 07:44:50,701 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 07:44:50,701 INFO L85 PathProgramCache]: Analyzing trace with hash 1906709841, now seen corresponding path program 1 times [2022-12-14 07:44:50,702 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 07:44:50,702 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1801729958] [2022-12-14 07:44:50,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 07:44:50,703 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 07:44:50,703 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4001d732-8413-45f9-b5b4-b6c09a8e87e7/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 07:44:50,706 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4001d732-8413-45f9-b5b4-b6c09a8e87e7/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-14 07:44:50,709 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4001d732-8413-45f9-b5b4-b6c09a8e87e7/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2022-12-14 07:44:50,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 07:44:50,845 INFO L263 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 13 conjunts are in the unsatisfiable core [2022-12-14 07:44:50,846 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 07:44:50,940 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 07:44:50,941 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 07:44:51,036 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 07:44:51,036 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 07:44:51,036 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1801729958] [2022-12-14 07:44:51,036 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1801729958] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 07:44:51,036 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1584103796] [2022-12-14 07:44:51,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 07:44:51,036 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-12-14 07:44:51,036 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4001d732-8413-45f9-b5b4-b6c09a8e87e7/bin/utaipan-gh47qXpMRh/cvc4 [2022-12-14 07:44:51,037 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4001d732-8413-45f9-b5b4-b6c09a8e87e7/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-12-14 07:44:51,038 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4001d732-8413-45f9-b5b4-b6c09a8e87e7/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (18)] Waiting until timeout for monitored process [2022-12-14 07:44:51,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 07:44:51,167 INFO L263 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 10 conjunts are in the unsatisfiable core [2022-12-14 07:44:51,168 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 07:44:51,260 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 07:44:51,260 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 07:44:51,288 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 07:44:51,288 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1584103796] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 07:44:51,288 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [350876871] [2022-12-14 07:44:51,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 07:44:51,288 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 07:44:51,288 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4001d732-8413-45f9-b5b4-b6c09a8e87e7/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 07:44:51,289 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4001d732-8413-45f9-b5b4-b6c09a8e87e7/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 07:44:51,290 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4001d732-8413-45f9-b5b4-b6c09a8e87e7/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2022-12-14 07:44:51,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 07:44:51,368 INFO L263 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 10 conjunts are in the unsatisfiable core [2022-12-14 07:44:51,369 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 07:44:51,416 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 07:44:51,416 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 07:44:51,443 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 07:44:51,443 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [350876871] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 07:44:51,443 INFO L184 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2022-12-14 07:44:51,443 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4, 4, 4, 4] total 10 [2022-12-14 07:44:51,443 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1887802917] [2022-12-14 07:44:51,443 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2022-12-14 07:44:51,444 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-12-14 07:44:51,444 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 07:44:51,444 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-12-14 07:44:51,444 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2022-12-14 07:44:51,444 INFO L87 Difference]: Start difference. First operand 50196 states and 247164 transitions. Second operand has 12 states, 11 states have (on average 2.272727272727273) internal successors, (25), 11 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 07:44:53,412 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 07:44:53,412 INFO L93 Difference]: Finished difference Result 71029 states and 323830 transitions. [2022-12-14 07:44:53,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-12-14 07:44:53,413 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 2.272727272727273) internal successors, (25), 11 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2022-12-14 07:44:53,413 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 07:44:53,987 INFO L225 Difference]: With dead ends: 71029 [2022-12-14 07:44:53,987 INFO L226 Difference]: Without dead ends: 71029 [2022-12-14 07:44:53,988 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=80, Invalid=192, Unknown=0, NotChecked=0, Total=272 [2022-12-14 07:44:53,988 INFO L413 NwaCegarLoop]: 98 mSDtfsCounter, 762 mSDsluCounter, 366 mSDsCounter, 0 mSdLazyCounter, 798 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 762 SdHoareTripleChecker+Valid, 464 SdHoareTripleChecker+Invalid, 812 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 798 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-12-14 07:44:53,988 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [762 Valid, 464 Invalid, 812 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 798 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-12-14 07:44:54,136 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71029 states. [2022-12-14 07:44:55,304 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71029 to 45728. [2022-12-14 07:44:55,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45728 states, 44743 states have (on average 4.854658829314083) internal successors, (217212), 45727 states have internal predecessors, (217212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 07:44:55,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45728 states to 45728 states and 217212 transitions. [2022-12-14 07:44:55,556 INFO L78 Accepts]: Start accepts. Automaton has 45728 states and 217212 transitions. Word has length 11 [2022-12-14 07:44:55,556 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 07:44:55,556 INFO L495 AbstractCegarLoop]: Abstraction has 45728 states and 217212 transitions. [2022-12-14 07:44:55,557 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 2.272727272727273) internal successors, (25), 11 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 07:44:55,557 INFO L276 IsEmpty]: Start isEmpty. Operand 45728 states and 217212 transitions. [2022-12-14 07:44:55,557 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-12-14 07:44:55,557 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 07:44:55,557 INFO L195 NwaCegarLoop]: trace histogram [10, 1, 1] [2022-12-14 07:44:55,560 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4001d732-8413-45f9-b5b4-b6c09a8e87e7/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (18)] Ended with exit code 0 [2022-12-14 07:44:55,772 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4001d732-8413-45f9-b5b4-b6c09a8e87e7/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2022-12-14 07:44:55,972 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4001d732-8413-45f9-b5b4-b6c09a8e87e7/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2022-12-14 07:44:56,159 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4001d732-8413-45f9-b5b4-b6c09a8e87e7/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt,19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4001d732-8413-45f9-b5b4-b6c09a8e87e7/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4001d732-8413-45f9-b5b4-b6c09a8e87e7/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 07:44:56,160 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 67 more)] === [2022-12-14 07:44:56,162 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 07:44:56,162 INFO L85 PathProgramCache]: Analyzing trace with hash -1187487974, now seen corresponding path program 3 times [2022-12-14 07:44:56,163 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 07:44:56,163 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1790579293] [2022-12-14 07:44:56,163 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-14 07:44:56,163 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 07:44:56,163 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4001d732-8413-45f9-b5b4-b6c09a8e87e7/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 07:44:56,164 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4001d732-8413-45f9-b5b4-b6c09a8e87e7/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-14 07:44:56,166 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4001d732-8413-45f9-b5b4-b6c09a8e87e7/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2022-12-14 07:44:56,340 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2022-12-14 07:44:56,340 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-14 07:44:56,348 INFO L263 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 21 conjunts are in the unsatisfiable core [2022-12-14 07:44:56,349 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 07:44:56,394 INFO L321 Elim1Store]: treesize reduction 37, result has 37.3 percent of original size [2022-12-14 07:44:56,394 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 14 treesize of output 29 [2022-12-14 07:44:56,667 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 07:44:56,667 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 07:44:59,338 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 07:44:59,338 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 07:44:59,338 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1790579293] [2022-12-14 07:44:59,338 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1790579293] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 07:44:59,339 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [643602406] [2022-12-14 07:44:59,339 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-14 07:44:59,339 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-12-14 07:44:59,339 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4001d732-8413-45f9-b5b4-b6c09a8e87e7/bin/utaipan-gh47qXpMRh/cvc4 [2022-12-14 07:44:59,339 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4001d732-8413-45f9-b5b4-b6c09a8e87e7/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-12-14 07:44:59,340 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4001d732-8413-45f9-b5b4-b6c09a8e87e7/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (21)] Waiting until timeout for monitored process [2022-12-14 07:44:59,881 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2022-12-14 07:44:59,881 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-14 07:44:59,888 INFO L263 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 21 conjunts are in the unsatisfiable core [2022-12-14 07:44:59,890 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 07:44:59,932 INFO L321 Elim1Store]: treesize reduction 37, result has 37.3 percent of original size [2022-12-14 07:44:59,932 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 14 treesize of output 29 [2022-12-14 07:45:00,082 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 07:45:00,082 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 07:45:03,646 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 07:45:03,646 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [643602406] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 07:45:03,647 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1703510663] [2022-12-14 07:45:03,647 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-14 07:45:03,647 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 07:45:03,647 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4001d732-8413-45f9-b5b4-b6c09a8e87e7/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 07:45:03,648 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4001d732-8413-45f9-b5b4-b6c09a8e87e7/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 07:45:03,648 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4001d732-8413-45f9-b5b4-b6c09a8e87e7/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2022-12-14 07:45:05,788 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2022-12-14 07:45:05,788 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-14 07:45:05,797 INFO L263 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 20 conjunts are in the unsatisfiable core [2022-12-14 07:45:05,798 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 07:45:05,840 INFO L321 Elim1Store]: treesize reduction 37, result has 37.3 percent of original size [2022-12-14 07:45:05,840 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 14 treesize of output 29 [2022-12-14 07:45:05,986 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 07:45:05,987 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 07:45:09,435 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 07:45:09,435 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1703510663] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 07:45:09,435 INFO L184 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2022-12-14 07:45:09,435 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11, 11, 11, 11] total 42 [2022-12-14 07:45:09,435 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1022950598] [2022-12-14 07:45:09,435 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2022-12-14 07:45:09,436 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2022-12-14 07:45:09,436 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 07:45:09,437 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2022-12-14 07:45:09,438 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=506, Invalid=1386, Unknown=0, NotChecked=0, Total=1892 [2022-12-14 07:45:09,438 INFO L87 Difference]: Start difference. First operand 45728 states and 217212 transitions. Second operand has 44 states, 43 states have (on average 1.1162790697674418) internal successors, (48), 43 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 07:46:56,790 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 07:46:56,791 INFO L93 Difference]: Finished difference Result 372944 states and 1780944 transitions. [2022-12-14 07:46:56,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-12-14 07:46:56,792 INFO L78 Accepts]: Start accepts. Automaton has has 44 states, 43 states have (on average 1.1162790697674418) internal successors, (48), 43 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2022-12-14 07:46:56,792 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 07:46:59,205 INFO L225 Difference]: With dead ends: 372944 [2022-12-14 07:46:59,205 INFO L226 Difference]: Without dead ends: 372944 [2022-12-14 07:46:59,206 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 660 ImplicationChecksByTransitivity, 30.6s TimeCoverageRelationStatistics Valid=1155, Invalid=2751, Unknown=0, NotChecked=0, Total=3906 [2022-12-14 07:46:59,206 INFO L413 NwaCegarLoop]: 27 mSDtfsCounter, 4018 mSDsluCounter, 539 mSDsCounter, 0 mSdLazyCounter, 2972 mSolverCounterSat, 574 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 80.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4018 SdHoareTripleChecker+Valid, 566 SdHoareTripleChecker+Invalid, 3546 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 574 IncrementalHoareTripleChecker+Valid, 2972 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 82.5s IncrementalHoareTripleChecker+Time [2022-12-14 07:46:59,207 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4018 Valid, 566 Invalid, 3546 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [574 Valid, 2972 Invalid, 0 Unknown, 0 Unchecked, 82.5s Time] [2022-12-14 07:46:59,957 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 372944 states. [2022-12-14 07:47:03,820 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 372944 to 45740. [2022-12-14 07:47:03,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45740 states, 44755 states have (on average 4.853893419729639) internal successors, (217236), 45739 states have internal predecessors, (217236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 07:47:04,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45740 states to 45740 states and 217236 transitions. [2022-12-14 07:47:04,262 INFO L78 Accepts]: Start accepts. Automaton has 45740 states and 217236 transitions. Word has length 12 [2022-12-14 07:47:04,262 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 07:47:04,262 INFO L495 AbstractCegarLoop]: Abstraction has 45740 states and 217236 transitions. [2022-12-14 07:47:04,262 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 44 states, 43 states have (on average 1.1162790697674418) internal successors, (48), 43 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 07:47:04,263 INFO L276 IsEmpty]: Start isEmpty. Operand 45740 states and 217236 transitions. [2022-12-14 07:47:04,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-12-14 07:47:04,263 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 07:47:04,263 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 07:47:04,267 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4001d732-8413-45f9-b5b4-b6c09a8e87e7/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (21)] Forceful destruction successful, exit code 0 [2022-12-14 07:47:04,475 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4001d732-8413-45f9-b5b4-b6c09a8e87e7/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Ended with exit code 0 [2022-12-14 07:47:04,678 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4001d732-8413-45f9-b5b4-b6c09a8e87e7/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (20)] Ended with exit code 0 [2022-12-14 07:47:04,865 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4001d732-8413-45f9-b5b4-b6c09a8e87e7/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt,22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4001d732-8413-45f9-b5b4-b6c09a8e87e7/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4001d732-8413-45f9-b5b4-b6c09a8e87e7/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 07:47:04,866 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting thread2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 67 more)] === [2022-12-14 07:47:04,867 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 07:47:04,867 INFO L85 PathProgramCache]: Analyzing trace with hash 2143001457, now seen corresponding path program 2 times [2022-12-14 07:47:04,868 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 07:47:04,868 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [146353808] [2022-12-14 07:47:04,869 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-14 07:47:04,869 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 07:47:04,870 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4001d732-8413-45f9-b5b4-b6c09a8e87e7/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 07:47:04,871 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4001d732-8413-45f9-b5b4-b6c09a8e87e7/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-14 07:47:04,872 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4001d732-8413-45f9-b5b4-b6c09a8e87e7/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (23)] Waiting until timeout for monitored process [2022-12-14 07:47:04,986 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-12-14 07:47:04,986 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-14 07:47:04,990 INFO L263 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 25 conjunts are in the unsatisfiable core [2022-12-14 07:47:04,992 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 07:47:05,069 INFO L321 Elim1Store]: treesize reduction 41, result has 34.9 percent of original size [2022-12-14 07:47:05,069 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 16 treesize of output 31 [2022-12-14 07:47:05,143 INFO L321 Elim1Store]: treesize reduction 39, result has 40.0 percent of original size [2022-12-14 07:47:05,143 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 12 treesize of output 33 [2022-12-14 07:47:05,301 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:47:05,302 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2022-12-14 07:47:05,319 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-12-14 07:47:05,319 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2022-12-14 07:47:05,364 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:47:05,365 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2022-12-14 07:47:05,531 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-12-14 07:47:05,531 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 07:47:05,532 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 07:47:05,532 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [146353808] [2022-12-14 07:47:05,532 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [146353808] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 07:47:05,532 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 07:47:05,532 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-14 07:47:05,532 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1895688047] [2022-12-14 07:47:05,532 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 07:47:05,532 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-14 07:47:05,532 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 07:47:05,532 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-14 07:47:05,532 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-12-14 07:47:05,533 INFO L87 Difference]: Start difference. First operand 45740 states and 217236 transitions. Second operand has 7 states, 6 states have (on average 1.8333333333333333) internal successors, (11), 6 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 07:47:09,090 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 07:47:09,091 INFO L93 Difference]: Finished difference Result 40841 states and 181339 transitions. [2022-12-14 07:47:09,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-12-14 07:47:09,092 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 1.8333333333333333) internal successors, (11), 6 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 12 [2022-12-14 07:47:09,092 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 07:47:09,262 INFO L225 Difference]: With dead ends: 40841 [2022-12-14 07:47:09,263 INFO L226 Difference]: Without dead ends: 40841 [2022-12-14 07:47:09,263 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=65, Invalid=117, Unknown=0, NotChecked=0, Total=182 [2022-12-14 07:47:09,263 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 855 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 429 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 855 SdHoareTripleChecker+Valid, 56 SdHoareTripleChecker+Invalid, 480 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 429 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2022-12-14 07:47:09,264 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [855 Valid, 56 Invalid, 480 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 429 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2022-12-14 07:47:09,337 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40841 states. [2022-12-14 07:47:10,049 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40841 to 30157. [2022-12-14 07:47:10,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30157 states, 29741 states have (on average 4.7483608486600986) internal successors, (141221), 30156 states have internal predecessors, (141221), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 07:47:10,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30157 states to 30157 states and 141221 transitions. [2022-12-14 07:47:10,208 INFO L78 Accepts]: Start accepts. Automaton has 30157 states and 141221 transitions. Word has length 12 [2022-12-14 07:47:10,208 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 07:47:10,208 INFO L495 AbstractCegarLoop]: Abstraction has 30157 states and 141221 transitions. [2022-12-14 07:47:10,208 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 1.8333333333333333) internal successors, (11), 6 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 07:47:10,208 INFO L276 IsEmpty]: Start isEmpty. Operand 30157 states and 141221 transitions. [2022-12-14 07:47:10,209 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-12-14 07:47:10,209 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 07:47:10,209 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 07:47:10,217 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4001d732-8413-45f9-b5b4-b6c09a8e87e7/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (23)] Ended with exit code 0 [2022-12-14 07:47:10,410 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4001d732-8413-45f9-b5b4-b6c09a8e87e7/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 07:47:10,411 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting thread4Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 67 more)] === [2022-12-14 07:47:10,412 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 07:47:10,412 INFO L85 PathProgramCache]: Analyzing trace with hash 1431193414, now seen corresponding path program 1 times [2022-12-14 07:47:10,413 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 07:47:10,413 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1268537092] [2022-12-14 07:47:10,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 07:47:10,414 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 07:47:10,415 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4001d732-8413-45f9-b5b4-b6c09a8e87e7/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 07:47:10,418 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4001d732-8413-45f9-b5b4-b6c09a8e87e7/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-14 07:47:10,421 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4001d732-8413-45f9-b5b4-b6c09a8e87e7/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (24)] Waiting until timeout for monitored process [2022-12-14 07:47:10,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 07:47:10,514 INFO L263 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 5 conjunts are in the unsatisfiable core [2022-12-14 07:47:10,515 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 07:47:10,518 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2022-12-14 07:47:10,535 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-12-14 07:47:10,535 INFO L350 Elim1Store]: Elim1 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 2 case distinctions, treesize of input 19 treesize of output 27 [2022-12-14 07:47:10,621 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 07:47:10,621 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 07:47:10,621 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 07:47:10,621 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1268537092] [2022-12-14 07:47:10,621 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1268537092] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 07:47:10,621 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 07:47:10,621 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-14 07:47:10,621 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [989971993] [2022-12-14 07:47:10,621 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 07:47:10,622 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 07:47:10,622 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 07:47:10,622 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 07:47:10,622 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 07:47:10,622 INFO L87 Difference]: Start difference. First operand 30157 states and 141221 transitions. Second operand has 3 states, 2 states have (on average 6.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 07:47:11,147 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 07:47:11,147 INFO L93 Difference]: Finished difference Result 28182 states and 127647 transitions. [2022-12-14 07:47:11,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 07:47:11,148 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 6.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2022-12-14 07:47:11,148 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 07:47:11,261 INFO L225 Difference]: With dead ends: 28182 [2022-12-14 07:47:11,261 INFO L226 Difference]: Without dead ends: 28182 [2022-12-14 07:47:11,262 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 07:47:11,262 INFO L413 NwaCegarLoop]: 32 mSDtfsCounter, 63 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 174 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 46 SdHoareTripleChecker+Invalid, 179 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 174 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-12-14 07:47:11,262 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [63 Valid, 46 Invalid, 179 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 174 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-12-14 07:47:11,314 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28182 states. [2022-12-14 07:47:11,849 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28182 to 27075. [2022-12-14 07:47:11,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27075 states, 26714 states have (on average 4.641611140226098) internal successors, (123996), 27074 states have internal predecessors, (123996), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 07:47:11,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27075 states to 27075 states and 123996 transitions. [2022-12-14 07:47:11,981 INFO L78 Accepts]: Start accepts. Automaton has 27075 states and 123996 transitions. Word has length 12 [2022-12-14 07:47:11,981 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 07:47:11,981 INFO L495 AbstractCegarLoop]: Abstraction has 27075 states and 123996 transitions. [2022-12-14 07:47:11,981 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 6.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 07:47:11,981 INFO L276 IsEmpty]: Start isEmpty. Operand 27075 states and 123996 transitions. [2022-12-14 07:47:11,982 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-12-14 07:47:11,982 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 07:47:11,982 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 07:47:11,993 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4001d732-8413-45f9-b5b4-b6c09a8e87e7/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (24)] Forceful destruction successful, exit code 0 [2022-12-14 07:47:12,183 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4001d732-8413-45f9-b5b4-b6c09a8e87e7/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 07:47:12,183 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting thread4Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 67 more)] === [2022-12-14 07:47:12,184 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 07:47:12,184 INFO L85 PathProgramCache]: Analyzing trace with hash 1431193415, now seen corresponding path program 1 times [2022-12-14 07:47:12,185 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 07:47:12,185 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1321987305] [2022-12-14 07:47:12,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 07:47:12,186 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 07:47:12,186 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4001d732-8413-45f9-b5b4-b6c09a8e87e7/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 07:47:12,189 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4001d732-8413-45f9-b5b4-b6c09a8e87e7/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-14 07:47:12,192 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4001d732-8413-45f9-b5b4-b6c09a8e87e7/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (25)] Waiting until timeout for monitored process [2022-12-14 07:47:12,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 07:47:12,316 INFO L263 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 8 conjunts are in the unsatisfiable core [2022-12-14 07:47:12,317 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 07:47:12,322 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-12-14 07:47:12,326 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2022-12-14 07:47:12,340 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:47:12,341 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2022-12-14 07:47:12,348 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-12-14 07:47:12,348 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2022-12-14 07:47:12,361 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 07:47:12,361 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 07:47:12,361 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 07:47:12,362 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1321987305] [2022-12-14 07:47:12,362 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1321987305] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 07:47:12,362 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 07:47:12,362 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 07:47:12,362 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1827890754] [2022-12-14 07:47:12,362 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 07:47:12,362 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-14 07:47:12,362 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 07:47:12,362 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-14 07:47:12,363 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-12-14 07:47:12,363 INFO L87 Difference]: Start difference. First operand 27075 states and 123996 transitions. Second operand has 4 states, 3 states have (on average 4.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 07:47:12,907 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 07:47:12,907 INFO L93 Difference]: Finished difference Result 23804 states and 104851 transitions. [2022-12-14 07:47:12,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-14 07:47:12,907 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2022-12-14 07:47:12,907 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 07:47:13,000 INFO L225 Difference]: With dead ends: 23804 [2022-12-14 07:47:13,000 INFO L226 Difference]: Without dead ends: 23804 [2022-12-14 07:47:13,000 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-12-14 07:47:13,001 INFO L413 NwaCegarLoop]: 27 mSDtfsCounter, 98 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 236 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 98 SdHoareTripleChecker+Valid, 46 SdHoareTripleChecker+Invalid, 244 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 236 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-12-14 07:47:13,001 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [98 Valid, 46 Invalid, 244 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 236 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-12-14 07:47:13,043 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23804 states. [2022-12-14 07:47:13,462 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23804 to 22994. [2022-12-14 07:47:13,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22994 states, 22718 states have (on average 4.497667048155647) internal successors, (102178), 22993 states have internal predecessors, (102178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 07:47:13,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22994 states to 22994 states and 102178 transitions. [2022-12-14 07:47:13,572 INFO L78 Accepts]: Start accepts. Automaton has 22994 states and 102178 transitions. Word has length 12 [2022-12-14 07:47:13,572 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 07:47:13,572 INFO L495 AbstractCegarLoop]: Abstraction has 22994 states and 102178 transitions. [2022-12-14 07:47:13,572 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 07:47:13,573 INFO L276 IsEmpty]: Start isEmpty. Operand 22994 states and 102178 transitions. [2022-12-14 07:47:13,573 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-12-14 07:47:13,573 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 07:47:13,573 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 07:47:13,581 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4001d732-8413-45f9-b5b4-b6c09a8e87e7/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (25)] Forceful destruction successful, exit code 0 [2022-12-14 07:47:13,774 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4001d732-8413-45f9-b5b4-b6c09a8e87e7/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 07:47:13,774 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 67 more)] === [2022-12-14 07:47:13,775 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 07:47:13,775 INFO L85 PathProgramCache]: Analyzing trace with hash -337953552, now seen corresponding path program 1 times [2022-12-14 07:47:13,776 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 07:47:13,776 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [675390433] [2022-12-14 07:47:13,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 07:47:13,777 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 07:47:13,777 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4001d732-8413-45f9-b5b4-b6c09a8e87e7/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 07:47:13,780 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4001d732-8413-45f9-b5b4-b6c09a8e87e7/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-14 07:47:13,783 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4001d732-8413-45f9-b5b4-b6c09a8e87e7/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (26)] Waiting until timeout for monitored process [2022-12-14 07:47:13,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 07:47:13,902 INFO L263 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-14 07:47:13,903 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 07:47:13,907 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2022-12-14 07:47:13,915 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 07:47:13,915 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 07:47:13,915 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 07:47:13,916 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [675390433] [2022-12-14 07:47:13,916 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [675390433] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 07:47:13,916 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 07:47:13,916 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-14 07:47:13,916 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1652755854] [2022-12-14 07:47:13,916 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 07:47:13,916 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 07:47:13,916 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 07:47:13,916 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 07:47:13,917 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 07:47:13,917 INFO L87 Difference]: Start difference. First operand 22994 states and 102178 transitions. Second operand has 3 states, 2 states have (on average 6.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 07:47:14,374 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 07:47:14,374 INFO L93 Difference]: Finished difference Result 22315 states and 98153 transitions. [2022-12-14 07:47:14,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 07:47:14,374 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 6.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2022-12-14 07:47:14,374 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 07:47:14,458 INFO L225 Difference]: With dead ends: 22315 [2022-12-14 07:47:14,458 INFO L226 Difference]: Without dead ends: 22315 [2022-12-14 07:47:14,458 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 07:47:14,459 INFO L413 NwaCegarLoop]: 34 mSDtfsCounter, 58 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 173 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 46 SdHoareTripleChecker+Invalid, 178 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 173 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-12-14 07:47:14,459 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [58 Valid, 46 Invalid, 178 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 173 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-12-14 07:47:14,498 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22315 states. [2022-12-14 07:47:14,929 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22315 to 21826. [2022-12-14 07:47:14,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21826 states, 21594 states have (on average 4.477354820783551) internal successors, (96684), 21825 states have internal predecessors, (96684), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 07:47:15,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21826 states to 21826 states and 96684 transitions. [2022-12-14 07:47:15,015 INFO L78 Accepts]: Start accepts. Automaton has 21826 states and 96684 transitions. Word has length 12 [2022-12-14 07:47:15,015 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 07:47:15,016 INFO L495 AbstractCegarLoop]: Abstraction has 21826 states and 96684 transitions. [2022-12-14 07:47:15,016 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 6.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 07:47:15,016 INFO L276 IsEmpty]: Start isEmpty. Operand 21826 states and 96684 transitions. [2022-12-14 07:47:15,016 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-12-14 07:47:15,016 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 07:47:15,016 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 07:47:15,024 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4001d732-8413-45f9-b5b4-b6c09a8e87e7/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (26)] Ended with exit code 0 [2022-12-14 07:47:15,217 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4001d732-8413-45f9-b5b4-b6c09a8e87e7/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 07:47:15,218 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting thread1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 67 more)] === [2022-12-14 07:47:15,219 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 07:47:15,219 INFO L85 PathProgramCache]: Analyzing trace with hash -337953551, now seen corresponding path program 1 times [2022-12-14 07:47:15,219 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 07:47:15,220 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [53915523] [2022-12-14 07:47:15,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 07:47:15,220 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 07:47:15,221 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4001d732-8413-45f9-b5b4-b6c09a8e87e7/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 07:47:15,223 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4001d732-8413-45f9-b5b4-b6c09a8e87e7/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-14 07:47:15,226 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4001d732-8413-45f9-b5b4-b6c09a8e87e7/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (27)] Waiting until timeout for monitored process [2022-12-14 07:47:15,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 07:47:15,436 INFO L263 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-14 07:47:15,436 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 07:47:15,443 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-12-14 07:47:15,462 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 07:47:15,462 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 07:47:15,462 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 07:47:15,462 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [53915523] [2022-12-14 07:47:15,463 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [53915523] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 07:47:15,463 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 07:47:15,463 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-14 07:47:15,463 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1106247569] [2022-12-14 07:47:15,463 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 07:47:15,463 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 07:47:15,463 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 07:47:15,463 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 07:47:15,464 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 07:47:15,464 INFO L87 Difference]: Start difference. First operand 21826 states and 96684 transitions. Second operand has 3 states, 2 states have (on average 6.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 07:47:15,858 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 07:47:15,858 INFO L93 Difference]: Finished difference Result 20022 states and 88504 transitions. [2022-12-14 07:47:15,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 07:47:15,859 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 6.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2022-12-14 07:47:15,859 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 07:47:15,929 INFO L225 Difference]: With dead ends: 20022 [2022-12-14 07:47:15,929 INFO L226 Difference]: Without dead ends: 20022 [2022-12-14 07:47:15,930 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 07:47:15,930 INFO L413 NwaCegarLoop]: 32 mSDtfsCounter, 66 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 138 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 66 SdHoareTripleChecker+Valid, 42 SdHoareTripleChecker+Invalid, 141 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 138 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-12-14 07:47:15,930 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [66 Valid, 42 Invalid, 141 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 138 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-12-14 07:47:15,965 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20022 states. [2022-12-14 07:47:16,366 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20022 to 20022. [2022-12-14 07:47:16,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20022 states, 19846 states have (on average 4.459538446034466) internal successors, (88504), 20021 states have internal predecessors, (88504), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 07:47:16,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20022 states to 20022 states and 88504 transitions. [2022-12-14 07:47:16,445 INFO L78 Accepts]: Start accepts. Automaton has 20022 states and 88504 transitions. Word has length 12 [2022-12-14 07:47:16,445 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 07:47:16,445 INFO L495 AbstractCegarLoop]: Abstraction has 20022 states and 88504 transitions. [2022-12-14 07:47:16,445 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 6.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 07:47:16,445 INFO L276 IsEmpty]: Start isEmpty. Operand 20022 states and 88504 transitions. [2022-12-14 07:47:16,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-12-14 07:47:16,446 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 07:47:16,446 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 07:47:16,453 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4001d732-8413-45f9-b5b4-b6c09a8e87e7/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (27)] Ended with exit code 0 [2022-12-14 07:47:16,646 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4001d732-8413-45f9-b5b4-b6c09a8e87e7/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 07:47:16,647 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting thread2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 67 more)] === [2022-12-14 07:47:16,648 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 07:47:16,648 INFO L85 PathProgramCache]: Analyzing trace with hash 2135098750, now seen corresponding path program 1 times [2022-12-14 07:47:16,649 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 07:47:16,649 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1949169826] [2022-12-14 07:47:16,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 07:47:16,650 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 07:47:16,650 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4001d732-8413-45f9-b5b4-b6c09a8e87e7/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 07:47:16,652 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4001d732-8413-45f9-b5b4-b6c09a8e87e7/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-14 07:47:16,655 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4001d732-8413-45f9-b5b4-b6c09a8e87e7/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (28)] Waiting until timeout for monitored process [2022-12-14 07:47:16,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 07:47:16,822 INFO L263 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 18 conjunts are in the unsatisfiable core [2022-12-14 07:47:16,823 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 07:47:16,878 INFO L321 Elim1Store]: treesize reduction 37, result has 37.3 percent of original size [2022-12-14 07:47:16,879 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 14 treesize of output 29 [2022-12-14 07:47:16,941 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 13 treesize of output 9 [2022-12-14 07:47:17,121 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 07:47:17,121 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 07:47:17,391 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 07:47:17,391 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 07:47:17,391 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1949169826] [2022-12-14 07:47:17,391 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1949169826] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 07:47:17,391 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1065435152] [2022-12-14 07:47:17,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 07:47:17,392 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-12-14 07:47:17,392 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4001d732-8413-45f9-b5b4-b6c09a8e87e7/bin/utaipan-gh47qXpMRh/cvc4 [2022-12-14 07:47:17,392 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4001d732-8413-45f9-b5b4-b6c09a8e87e7/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-12-14 07:47:17,393 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4001d732-8413-45f9-b5b4-b6c09a8e87e7/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (29)] Waiting until timeout for monitored process [2022-12-14 07:47:17,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 07:47:17,558 INFO L263 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 13 conjunts are in the unsatisfiable core [2022-12-14 07:47:17,559 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 07:47:17,799 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 07:47:17,799 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 07:47:18,016 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 07:47:18,016 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1065435152] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 07:47:18,016 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1671428184] [2022-12-14 07:47:18,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 07:47:18,016 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 07:47:18,016 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4001d732-8413-45f9-b5b4-b6c09a8e87e7/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 07:47:18,017 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4001d732-8413-45f9-b5b4-b6c09a8e87e7/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 07:47:18,018 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4001d732-8413-45f9-b5b4-b6c09a8e87e7/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2022-12-14 07:47:18,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 07:47:18,111 INFO L263 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 16 conjunts are in the unsatisfiable core [2022-12-14 07:47:18,112 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 07:47:18,311 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 07:47:18,311 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 07:47:18,379 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 07:47:18,379 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1671428184] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 07:47:18,379 INFO L184 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2022-12-14 07:47:18,380 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6, 6, 6, 6] total 19 [2022-12-14 07:47:18,380 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [392713032] [2022-12-14 07:47:18,380 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2022-12-14 07:47:18,380 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-12-14 07:47:18,380 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 07:47:18,381 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-12-14 07:47:18,381 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=325, Unknown=0, NotChecked=0, Total=420 [2022-12-14 07:47:18,381 INFO L87 Difference]: Start difference. First operand 20022 states and 88504 transitions. Second operand has 21 states, 20 states have (on average 1.9) internal successors, (38), 20 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 07:47:24,815 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 07:47:24,815 INFO L93 Difference]: Finished difference Result 48167 states and 200579 transitions. [2022-12-14 07:47:24,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-12-14 07:47:24,816 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 20 states have (on average 1.9) internal successors, (38), 20 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2022-12-14 07:47:24,816 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 07:47:24,997 INFO L225 Difference]: With dead ends: 48167 [2022-12-14 07:47:24,997 INFO L226 Difference]: Without dead ends: 48167 [2022-12-14 07:47:24,998 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 57 SyntacticMatches, 2 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 243 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=272, Invalid=918, Unknown=0, NotChecked=0, Total=1190 [2022-12-14 07:47:24,998 INFO L413 NwaCegarLoop]: 180 mSDtfsCounter, 1631 mSDsluCounter, 1408 mSDsCounter, 0 mSdLazyCounter, 3293 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1631 SdHoareTripleChecker+Valid, 1588 SdHoareTripleChecker+Invalid, 3312 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 3293 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.3s IncrementalHoareTripleChecker+Time [2022-12-14 07:47:24,998 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1631 Valid, 1588 Invalid, 3312 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 3293 Invalid, 0 Unknown, 0 Unchecked, 5.3s Time] [2022-12-14 07:47:25,073 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48167 states. [2022-12-14 07:47:25,590 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48167 to 23943. [2022-12-14 07:47:25,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23943 states, 23767 states have (on average 4.440484705684352) internal successors, (105537), 23942 states have internal predecessors, (105537), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 07:47:25,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23943 states to 23943 states and 105537 transitions. [2022-12-14 07:47:25,708 INFO L78 Accepts]: Start accepts. Automaton has 23943 states and 105537 transitions. Word has length 14 [2022-12-14 07:47:25,708 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 07:47:25,708 INFO L495 AbstractCegarLoop]: Abstraction has 23943 states and 105537 transitions. [2022-12-14 07:47:25,709 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 20 states have (on average 1.9) internal successors, (38), 20 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 07:47:25,709 INFO L276 IsEmpty]: Start isEmpty. Operand 23943 states and 105537 transitions. [2022-12-14 07:47:25,709 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-12-14 07:47:25,709 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 07:47:25,709 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 07:47:25,715 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4001d732-8413-45f9-b5b4-b6c09a8e87e7/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Ended with exit code 0 [2022-12-14 07:47:25,917 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4001d732-8413-45f9-b5b4-b6c09a8e87e7/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (29)] Forceful destruction successful, exit code 0 [2022-12-14 07:47:26,124 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4001d732-8413-45f9-b5b4-b6c09a8e87e7/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (28)] Ended with exit code 0 [2022-12-14 07:47:26,311 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4001d732-8413-45f9-b5b4-b6c09a8e87e7/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4001d732-8413-45f9-b5b4-b6c09a8e87e7/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt,28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4001d732-8413-45f9-b5b4-b6c09a8e87e7/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 07:47:26,312 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting thread5Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 67 more)] === [2022-12-14 07:47:26,312 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 07:47:26,313 INFO L85 PathProgramCache]: Analyzing trace with hash 987372288, now seen corresponding path program 1 times [2022-12-14 07:47:26,313 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 07:47:26,314 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [289014300] [2022-12-14 07:47:26,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 07:47:26,315 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 07:47:26,315 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4001d732-8413-45f9-b5b4-b6c09a8e87e7/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 07:47:26,316 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4001d732-8413-45f9-b5b4-b6c09a8e87e7/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-14 07:47:26,317 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4001d732-8413-45f9-b5b4-b6c09a8e87e7/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (31)] Waiting until timeout for monitored process [2022-12-14 07:47:26,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 07:47:26,497 INFO L263 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 11 conjunts are in the unsatisfiable core [2022-12-14 07:47:26,499 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 07:47:26,597 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 07:47:26,597 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 07:47:26,597 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 07:47:26,597 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [289014300] [2022-12-14 07:47:26,597 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [289014300] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 07:47:26,597 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 07:47:26,598 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 07:47:26,598 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [765406204] [2022-12-14 07:47:26,598 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 07:47:26,598 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-14 07:47:26,598 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 07:47:26,598 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-14 07:47:26,598 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-12-14 07:47:26,599 INFO L87 Difference]: Start difference. First operand 23943 states and 105537 transitions. Second operand has 5 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 07:47:27,226 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 07:47:27,226 INFO L93 Difference]: Finished difference Result 27509 states and 116983 transitions. [2022-12-14 07:47:27,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-14 07:47:27,227 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2022-12-14 07:47:27,227 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 07:47:27,326 INFO L225 Difference]: With dead ends: 27509 [2022-12-14 07:47:27,326 INFO L226 Difference]: Without dead ends: 27509 [2022-12-14 07:47:27,326 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-12-14 07:47:27,327 INFO L413 NwaCegarLoop]: 38 mSDtfsCounter, 181 mSDsluCounter, 71 mSDsCounter, 0 mSdLazyCounter, 212 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 181 SdHoareTripleChecker+Valid, 109 SdHoareTripleChecker+Invalid, 217 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 212 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-12-14 07:47:27,327 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [181 Valid, 109 Invalid, 217 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 212 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-12-14 07:47:27,373 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27509 states. [2022-12-14 07:47:27,787 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27509 to 26188. [2022-12-14 07:47:27,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26188 states, 26012 states have (on average 4.355566661540827) internal successors, (113297), 26187 states have internal predecessors, (113297), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 07:47:27,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26188 states to 26188 states and 113297 transitions. [2022-12-14 07:47:27,915 INFO L78 Accepts]: Start accepts. Automaton has 26188 states and 113297 transitions. Word has length 14 [2022-12-14 07:47:27,916 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 07:47:27,916 INFO L495 AbstractCegarLoop]: Abstraction has 26188 states and 113297 transitions. [2022-12-14 07:47:27,916 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 07:47:27,916 INFO L276 IsEmpty]: Start isEmpty. Operand 26188 states and 113297 transitions. [2022-12-14 07:47:27,917 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-12-14 07:47:27,917 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 07:47:27,917 INFO L195 NwaCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 07:47:27,925 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4001d732-8413-45f9-b5b4-b6c09a8e87e7/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (31)] Forceful destruction successful, exit code 0 [2022-12-14 07:47:28,117 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4001d732-8413-45f9-b5b4-b6c09a8e87e7/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 07:47:28,118 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting thread2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 67 more)] === [2022-12-14 07:47:28,119 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 07:47:28,119 INFO L85 PathProgramCache]: Analyzing trace with hash 2047232862, now seen corresponding path program 2 times [2022-12-14 07:47:28,120 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 07:47:28,120 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1974557090] [2022-12-14 07:47:28,120 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-14 07:47:28,121 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 07:47:28,121 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4001d732-8413-45f9-b5b4-b6c09a8e87e7/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 07:47:28,123 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4001d732-8413-45f9-b5b4-b6c09a8e87e7/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-14 07:47:28,126 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4001d732-8413-45f9-b5b4-b6c09a8e87e7/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (32)] Waiting until timeout for monitored process [2022-12-14 07:47:28,287 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-14 07:47:28,287 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-14 07:47:28,293 INFO L263 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 28 conjunts are in the unsatisfiable core [2022-12-14 07:47:28,296 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 07:47:28,358 INFO L321 Elim1Store]: treesize reduction 37, result has 37.3 percent of original size [2022-12-14 07:47:28,358 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 14 treesize of output 29 [2022-12-14 07:47:28,408 INFO L321 Elim1Store]: treesize reduction 39, result has 40.0 percent of original size [2022-12-14 07:47:28,408 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 12 treesize of output 33 [2022-12-14 07:47:28,594 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:47:28,595 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-12-14 07:47:28,608 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-12-14 07:47:28,608 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2022-12-14 07:47:28,656 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-12-14 07:47:28,657 INFO L350 Elim1Store]: Elim1 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 14 treesize of output 20 [2022-12-14 07:47:28,953 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 07:47:28,953 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 07:47:31,319 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 07:47:31,319 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 07:47:31,319 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1974557090] [2022-12-14 07:47:31,320 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1974557090] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 07:47:31,320 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1215479221] [2022-12-14 07:47:31,320 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-14 07:47:31,320 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-12-14 07:47:31,320 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4001d732-8413-45f9-b5b4-b6c09a8e87e7/bin/utaipan-gh47qXpMRh/cvc4 [2022-12-14 07:47:31,321 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4001d732-8413-45f9-b5b4-b6c09a8e87e7/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-12-14 07:47:31,321 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4001d732-8413-45f9-b5b4-b6c09a8e87e7/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (33)] Waiting until timeout for monitored process [2022-12-14 07:47:31,626 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-14 07:47:31,626 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-14 07:47:31,629 INFO L263 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 28 conjunts are in the unsatisfiable core [2022-12-14 07:47:31,631 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 07:47:31,687 INFO L321 Elim1Store]: treesize reduction 37, result has 37.3 percent of original size [2022-12-14 07:47:31,687 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 14 treesize of output 29 [2022-12-14 07:47:32,201 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:47:32,201 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-12-14 07:47:32,339 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:47:32,339 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-12-14 07:47:32,829 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 07:47:32,829 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 07:47:48,263 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse0 (bvadd (_ bv8 32) c_~X_0~0.offset))) (or (not (bvule (bvadd (_ bv4 32) c_~X_0~0.offset) .cse0)) (let ((.cse1 (bvadd c_~X_0~0.offset (_ bv12 32)))) (and (or (bvule .cse0 .cse1) (forall ((|v_thread1Thread1of1ForFork5_~#t2~0.base_171| (_ BitVec 32)) (v_ArrVal_931 (_ BitVec 32)) (v_ArrVal_930 (_ BitVec 32)) (|v_thread1Thread1of1ForFork5_~#t3~0.base_117| (_ BitVec 32))) (or (not (bvult |c_#StackHeapBarrier| |v_thread1Thread1of1ForFork5_~#t2~0.base_171|)) (not (bvule .cse0 (select (store (store |c_#length| |v_thread1Thread1of1ForFork5_~#t2~0.base_171| v_ArrVal_930) |v_thread1Thread1of1ForFork5_~#t3~0.base_117| v_ArrVal_931) c_~X_0~0.base))) (not (bvult |c_#StackHeapBarrier| |v_thread1Thread1of1ForFork5_~#t3~0.base_117|))))) (forall ((|v_thread1Thread1of1ForFork5_~#t2~0.base_171| (_ BitVec 32))) (or (not (bvult |c_#StackHeapBarrier| |v_thread1Thread1of1ForFork5_~#t2~0.base_171|)) (forall ((v_ArrVal_930 (_ BitVec 32)) (|v_thread1Thread1of1ForFork5_~#t3~0.base_117| (_ BitVec 32))) (or (forall ((v_ArrVal_931 (_ BitVec 32))) (let ((.cse2 (select (store (store |c_#length| |v_thread1Thread1of1ForFork5_~#t2~0.base_171| v_ArrVal_930) |v_thread1Thread1of1ForFork5_~#t3~0.base_117| v_ArrVal_931) c_~X_0~0.base))) (or (not (bvule .cse0 .cse2)) (bvule .cse1 .cse2)))) (not (bvult |c_#StackHeapBarrier| |v_thread1Thread1of1ForFork5_~#t3~0.base_117|)))))))))) is different from false [2022-12-14 07:48:01,141 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 07:48:01,141 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1215479221] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 07:48:01,141 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1279636318] [2022-12-14 07:48:01,141 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-14 07:48:01,141 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 07:48:01,141 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4001d732-8413-45f9-b5b4-b6c09a8e87e7/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 07:48:01,142 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4001d732-8413-45f9-b5b4-b6c09a8e87e7/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 07:48:01,143 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4001d732-8413-45f9-b5b4-b6c09a8e87e7/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process [2022-12-14 07:48:01,286 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-14 07:48:01,286 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-14 07:48:01,292 INFO L263 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 29 conjunts are in the unsatisfiable core [2022-12-14 07:48:01,294 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 07:48:01,355 INFO L321 Elim1Store]: treesize reduction 37, result has 37.3 percent of original size [2022-12-14 07:48:01,355 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 14 treesize of output 29 [2022-12-14 07:48:01,414 INFO L321 Elim1Store]: treesize reduction 39, result has 40.0 percent of original size [2022-12-14 07:48:01,414 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 12 treesize of output 33 [2022-12-14 07:48:01,662 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:48:01,662 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-12-14 07:48:01,668 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-12-14 07:48:01,669 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2022-12-14 07:48:01,693 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-12-14 07:48:01,694 INFO L350 Elim1Store]: Elim1 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 14 treesize of output 20 [2022-12-14 07:48:01,813 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 07:48:01,813 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 07:48:22,254 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 07:48:22,254 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1279636318] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 07:48:22,254 INFO L184 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2022-12-14 07:48:22,255 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9, 9, 9, 9] total 41 [2022-12-14 07:48:22,255 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1473065173] [2022-12-14 07:48:22,255 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2022-12-14 07:48:22,255 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2022-12-14 07:48:22,255 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 07:48:22,256 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2022-12-14 07:48:22,256 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=187, Invalid=1530, Unknown=9, NotChecked=80, Total=1806 [2022-12-14 07:48:22,256 INFO L87 Difference]: Start difference. First operand 26188 states and 113297 transitions. Second operand has 43 states, 42 states have (on average 1.5952380952380953) internal successors, (67), 42 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 07:49:06,235 WARN L233 SmtUtils]: Spent 42.93s on a formula simplification. DAG size of input: 192 DAG size of output: 123 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 07:49:21,335 WARN L233 SmtUtils]: Spent 14.57s on a formula simplification. DAG size of input: 179 DAG size of output: 107 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 07:50:08,832 WARN L233 SmtUtils]: Spent 42.07s on a formula simplification. DAG size of input: 177 DAG size of output: 122 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 07:52:28,024 WARN L233 SmtUtils]: Spent 2.26m on a formula simplification. DAG size of input: 114 DAG size of output: 83 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 07:52:47,349 WARN L233 SmtUtils]: Spent 14.36s on a formula simplification. DAG size of input: 164 DAG size of output: 106 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 07:52:53,243 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.24s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-14 07:54:42,186 WARN L233 SmtUtils]: Spent 1.69m on a formula simplification. DAG size of input: 104 DAG size of output: 96 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 07:54:44,326 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-14 07:54:46,336 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-14 07:54:48,346 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-14 07:54:50,355 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1]